Full Stack Developer at QAgile Services · Delhi, Gurugram, Noida, Ghaziabad, Faridabad · 1 - 7 years · ₹4L - ₹12L / yr · Profitable · Posted 7 May 2025

Job Title: Full Stack Engineer
Location: Delhi-NCR
Type: Full-Time
Responsibilities
Frontend:
- Develop responsive, intuitive interfaces using HTML, CSS (SASS), React, and Vanilla JS.
- Implement real-time features using sockets for dynamic, interactive user experiences.
- Collaborate with designers to ensure consistent UI/UX patterns and deliver visually compelling products.
Backend:
- Design, implement, and maintain APIs using Python (FastAPI).
- Integrate AI-driven features to enhance user experience and streamline processes.
- Ensure the code adheres to best practices in performance, scalability, and security.
- Troubleshoot and resolve production issues, minimizing downtime and improving reliability.
Database & Data Management:
- Work with PostgreSQL for relational data, ensuring optimal queries and indexing.
- Utilize ClickHouse or MongoDB where appropriate to handle specific data workloads and analytics needs.
- Contribute to building dashboards and tools for analytics and reporting.
- Leverage AI/ML concepts to derive insights from data and improve system performance.
General:
- Use Git for version control; conduct code reviews, ensure clean commit history, and maintain robust documentation.
- Collaborate with cross-functional teams to deliver features that align with business goals.
- Stay updated with industry trends, particularly in AI and emerging frameworks, and apply them to enhance our platform.
- Mentor junior engineers and contribute to continuous improvement in team processes and code quality.

About QAgile Services
About
|
At Qagile Services, we are dedicated to empowering businesses through cutting-edge IT solutions and unparalleled staffing services. Our mission is to bridge the gap between technology and talent, ensuring that your organization has the resources it needs to thrive in a rapidly evolving digital landscape.
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Full-Stack Engineer (Backend Heavy)
Experience: 4–6 Years | Function: Engineering — Product | Location: On-site
About Us
We’re building the next generation of AI-powered business software, and we’re looking for people who want to shape that future with us. With Lumen, we’re reimagining how users interact with CRM — moving beyond screens, menus and dashboards to an intelligent interface where users can simply ask AI to take actions, retrieve knowledge, generate insights and get work done. With Agent Studio, we’re enabling businesses to build, test and deploy their own AI agents for real-world workflows. And with Invorto, we’re bringing AI to voice, allowing businesses to create intelligent voice agents tailored to their customer and operational use cases.
What makes this especially exciting is the stage and scale of the opportunity. You’ll get to work on genuinely hard problems across LLMs, agents, reasoning, orchestration, voice AI, evaluation, reliability and enterprise security — not as isolated experiments, but as products used in real business workflows. You’ll have the opportunity to build zero-to-one, own meaningful parts of the product end-to-end, work closely with customers, experiment rapidly, and see your work reach production at scale.
Why join now? Because the playbook for enterprise AI is still being written. You won’t just be implementing someone else’s roadmap — you’ll help define the product, architecture and experiences that become that playbook. Expect high ownership, fast iteration, hard technical and product problems, direct customer impact, and the chance to build AI systems that have to work reliably in the real world — not just in a demo.
About the Role
We are looking for a Full-Stack Engineer with a strong backend bias to help build end-to-end product experiences across Lumen and Agent Studio. You will own features from database and API design through to the front-end experience, working closely with product and design to ship AI-powered experiences that real business users depend on every day.
What You’ll Do
Design and build backend services and APIs in Python that power core product and AI-agent features.
Build front-end interfaces and experiences that let users interact naturally with AI agents, insights and CRM workflows.
Own features end-to-end — from data modeling and backend logic to UI implementation, testing and release.
Work with product managers and designers to translate requirements into well-architected, scalable systems.
Integrate with LLM-based and agentic backend systems built by the AI/ML engineering team.
Optimize application performance, reliability and code quality across the stack.
Engage directly with customers and customer success teams to understand workflows, triage issues and inform roadmap decisions.
What We’re Looking For
4–6 years of professional full-stack engineering experience, with a clear backend-heavy skill set in Python.
Strong experience designing and building REST/GraphQL APIs, data models and scalable backend services.
Working proficiency with modern front-end frameworks (e.g., React) to build and integrate user-facing features.
Experience with relational/NoSQL databases, caching and cloud infrastructure.
Ability to move fast in a zero-to-one environment while maintaining code quality and system reliability.
Strong communication skills — this is a customer-facing role, and you will be expected to clearly articulate technical concepts, decisions and trade-offs to both technical and non-technical stakeholders, including customers.
Good to Have
Experience building features on top of LLM or AI-agent backends.
Prior experience in CRM, SaaS or enterprise business applications.
Exposure to real-time or voice-based product interfaces.
We are looking for a skilled Full Stack Developer with 3+ years of experience in Python and React.js to join our engineering team. The ideal candidate should have strong experience building scalable web applications, developing backend APIs, and creating responsive frontend interfaces.
Key Responsibilities
- Develop and maintain full-stack web applications using Python and React.js.
- Build scalable and secure RESTful APIs using Django, Flask, or FastAPI.
- Develop responsive and user-friendly interfaces using React.js.
- Integrate frontend applications with backend APIs and third-party services.
- Work with databases such as PostgreSQL, MySQL, or MongoDB.
- Write clean, reusable, and maintainable code.
- Troubleshoot, debug, and optimize application performance.
- Participate in code reviews and follow software development best practices.
- Collaborate with UI/UX designers, QA engineers, DevOps, and other developers.
- Write unit and integration tests to ensure application reliability.
- Use Git/GitHub/GitLab for version control.
- Contribute to system design, documentation, deployment, and continuous improvement.
Required Skills
- 3+ years of professional experience in Full Stack Development
- Strong hands-on experience with Python
- Strong experience with React.js
- Experience with Django / Flask / FastAPI
- Good understanding of JavaScript, HTML5, and CSS3
- Strong knowledge of REST APIs
- Experience with PostgreSQL / MySQL / MongoDB
- Good understanding of Git and version control
- Strong knowledge of OOP, data structures, and software development concepts
- Experience with debugging and performance optimization
- Good problem-solving and communication skills
Good to Have
- Experience with TypeScript
- Knowledge of Next.js
- Experience with AWS / Azure / GCP
- Knowledge of Docker and Kubernetes
- Understanding of CI/CD pipelines
- Experience with microservices architecture
- Exposure to AI/ML or GenAI applications is a plus
Education
Bachelor’s degree in Computer Science, IT, Engineering, or a related field.
Key Responsibilities
- Design, develop, and maintain scalable Python backend applications for enterprise use cases.
- Develop robust REST APIs and microservices using Python frameworks such as FastAPI, Flask, or Django.
- Design and implement scalable backend services with proper API integration, authentication, error handling, logging, and monitoring.
- Develop responsive and scalable React.js frontend applications.
- Implement React Hooks, state management, API integration, reusable components, and frontend development.
- Integrate React.js applications with Python backend APIs and microservices.
- Design and develop Generative AI and LLM-powered applications.
- Build and integrate Agentic AI / AI Agent solutions for enterprise use cases.
- Develop RAG (Retrieval-Augmented Generation) pipelines using enterprise data and knowledge sources.
- Work with embeddings, vector databases, and vector search for semantic retrieval and knowledge-based applications.
- Develop AI agent workflows using frameworks such as LangChain, LangGraph, Google ADK, or Semantic Kernel.
- Implement tool calling and function calling to enable AI agents to interact with APIs, databases, enterprise systems, and external services.
- Apply prompt engineering techniques to improve LLM response quality, accuracy, consistency, and reliability.
- Integrate LLMs and GenAI capabilities into full-stack applications.
- Develop multi-step AI workflows, agent orchestration, and intelligent automation solutions.
- Design APIs and services for seamless integration between AI components, backend services, databases, and frontend applications.
- Work with cloud platforms such as AWS, Azure, or GCP for application and AI solution deployment.
- Develop production-ready applications with focus on scalability, performance, security, reliability, and maintainability.
- Troubleshoot and optimize backend, frontend, API, RAG, LLM, and Agentic AI components.
- Collaborate with architects, software engineers, AI/ML engineers, product teams, and business stakeholders.
- Participate in code reviews, technical discussions, testing, deployment, and production support.
Mandatory Skills
- Python Backend Development
- REST API / Microservices
- FastAPI / Flask / Django
- React.js
- React Hooks / State Management
- Frontend Development & API Integration
- GenAI / LLM
- Agentic AI
- RAG
- Embeddings / Vector Search
- LangChain / LangGraph / Google ADK / Semantic Kernel
- Prompt Engineering
- Tool Calling / Function Calling
- Cloud – AWS / Azure / GCP
Preferred Candidate Profile
- 8.5+ years of overall software development experience.
- Strong hands-on experience in Python backend development and API/microservices development.
- Strong experience in React.js and full-stack application development.
- Practical experience building GenAI/LLM applications.
- Hands-on experience with Agentic AI and AI agent frameworks.
- Good understanding of RAG, embeddings, vector search, and LLM-based application architecture.
- Experience with LangChain, LangGraph, Google ADK, Semantic Kernel, or equivalent agent frameworks.
- Strong understanding of prompt engineering and tool/function calling.
- Experience integrating AI capabilities with APIs, databases, enterprise applications, and external systems.
- Hands-on experience with at least one major cloud platform such as AWS, Azure, or GCP.
- Strong problem-solving, debugging, communication, and collaboration skills.
- Candidates should be available for immediate / short-term joining.
Full Stack Developer
Experience: 3 to 5 Years
Location: Hyderabad
Interview Mode: Face-to-Face (F2F)
Work Mode: Hybrid
Employment Type: Full-Time
Note: Immediate joiners or candidates with a notice period of up to 15 days are preferred. We are only considering candidates who can attend a face-to-face interview at our office.
Role Summary;
We are looking for a Full Stack Developer (React.js + Python + AWS + AI) to design, develop, and maintain scalable web applications and AI-powered solutions. The ideal candidate must have strong experience in React.js, Python, AWS, and AI development. Hands-on AI development experience is mandatory for this role.
Mandatory AI Skill Requirement - AI development experience is mandatory. Candidates without hands-on AI development experience will not be considered.
Candidates must have practical experience in one or more of the following:
- Building AI-powered applications.
- Working with Large Language Models (LLMs).
- Prompt Engineering.
- Retrieval-Augmented Generation (RAG).
- AI agent development using LangChain, LangGraph, or similar frameworks.
- Integrating AI models through APIs such as OpenAI, Anthropic, or Gemini.
- Developing AI-enabled workflows and intelligent business applications.
Note: Experience using AI coding assistants (ChatGPT, GitHub Copilot, Claude, Gemini, etc.) alone does not meet this requirement. Candidates must have actual AI application development experience.
Key Responsibilities
- Develop and maintain full-stack web applications.
- Build responsive frontend applications using React.js.
- Develop backend REST APIs using Python (FastAPI / Django / Flask).
- Design, develop, and integrate AI-powered features into applications.
- Develop and deploy applications on AWS cloud services.
- Work with relational databases (MySQL / PostgreSQL / SQL Server).
- Integrate frontend and backend components.
- Follow Agile/Scrum development processes.
- Write clean, maintainable, and production-ready code.
- Collaborate with cross-functional teams to deliver scalable and high-quality solutions.
Required Skills (Mandatory)
- 3 to 5 years of Full Stack development experience.
- Strong experience in React.js.
- Strong backend development experience in Python.
- Hands-on experience with AWS cloud services.
- Hands-on AI development experience (Mandatory).
- Experience with LLMs, Prompt Engineering, RAG, LangChain, LangGraph, or similar AI frameworks.
- REST API development experience.
- Strong SQL database experience.
- Git and Agile development workflow.
- Good understanding of software design principles and best practices.
Good to Have
- Docker
- CI/CD pipelines
- Microservices architecture
- Kubernetes
- Experience with vector databases and AI model integrations
Preferred Qualifications
- Bachelor's degree in Computer Science or a related field.
- Strong problem-solving and analytical skills.
- Good communication and teamwork abilities.
- Passion for learning new technologies, especially AI, cloud technologies, and modern software development.
Total Experience: 4+ years
Mode of Hire: Permanent
Required Skills Set (Mandatory): HTML, JavaScript, Node.js, Express.js, MongoDB, React/Next.js, AI Integration (LLMs/APIs - OpenAI, Anthropic, Gemini)
Desired Skills (Good if you have): Cloud Platforms (AWS), System Design, Application Security
What is the role all about?
We're hiring full-stack engineers who build with AI, not the traditional way. You should be fluent in modern web engineering, primarily Node.js, and just as fluent in using LLMs and AI tools (Cursor, Claude Code, and similar) to ship fast. Work that once took a month should take a week; what took a week should take a day.
The role spans a range, from architecting backends for non-trivial products like assistants and agents, to rapidly turning a requirement into a clean, customer-facing app or MVP. Be strong in at least one area, be comfortable across the system as a whole, and tell us where you're strongest so we can place you accordingly.
What will you do?
- Plan, build, and ship product features end-to-end, with AI embedded where it has the most impact.
- Integrate LLMs and AI APIs into production-grade applications.
- Use AI tools to prototype, build, and deliver at high speed without sacrificing quality.
- Design scalable APIs and data models with Node.js, Express.js, and MongoDB.
- Build responsive, performant, customer-facing interfaces with React/Next.js.
- Contribute to design discussions, code reviews, and architectural decisions.
What are we looking for?
AI leverage:
- You've shipped real things using LLMs or AI APIs and instinctively reach for AI to move faster.
- Comfortable with prompt engineering and judging AI output for production-readiness.
Engineering depth and delivery:
- Solid fundamentals: problem-solving, data structures, and how systems fit together.
- At least 2+ years across frontend (React/Next.js), APIs (Node.js/Express.js), and databases (MongoDB).
- You write clean, production-grade code and you ship.
- Knowledge of application security or ethical hacking is an advantage.
Culture
- Work with performance-oriented teams driven by ownership and passion.
- Learn to design systems for high accuracy, efficiency, and scalability.
- No strict deadlines, focus on delivering quality work.
- Meritocracy-driven, candid culture. No politics.
- Very high visibility regarding which startups and markets are exciting globally.
About Tracxn
Tracxn (Tracxn.com) is a Bangalore-based product company that provides a research and deal-sourcing platform for Venture Capital, Private Equity, Corp Dev, and professionals in the startup ecosystem.
We are a team of 800+ working professionals serving customers across the globe. Our clients include Funds such as Andreessen Horowitz, Matrix Partners, and GGV Capital, as well as Large Corporates such as Citi, Embraer & Ferrero.
Founders
- Neha Singh (ex-Sequoia, BCG | MBA - Stanford GSB)
- Abhishek Goyal (ex-Accel Partners, Amazon | BTech - IIT Kanpur)
About Technology Team
Tracxn's Technology team is 50+ members strong and growing. The technology team is subdivided into multiple smaller teams, each of which owns one or more services/components of the technology platform. Ours is a young team of motivated engineers with a minimal management structure, in which almost everyone is actively involved in technical development and design. We have a team-centric culture where ownership and responsibility for a feature or module lie with a team rather than an individual.
We work on an array of technologies, including but not limited to ReactJS, Next.js, Storybook, Webpack, Node, Mongo, AWS Lambda, Spring, Elastic Stack, MySQL, Kafka, Redis, Ansible, etc.
We value ownership, continuous learning, consistency, and discipline as a team.
About the Role
Shava Studios is building AI-native software products. We are hiring a Mid Senior Full-Stack Engineer to own features end-to-end across the frontend and backend, with depth in system architecture and the AI and real-time systems that connect them. We hire for demonstrated ability rather than years of experience.
Technical Environment
- Frontend: Next.js (App Router), React, TypeScript, Tailwind CSS, MUI, Radix UI, TanStack Query, Zustand, NextAuth; Remotion for in-browser video editing and rendering.
- Backend: Python, FastAPI, SQLAlchemy with PostgreSQL and Alembic, Pydantic; hexagonal (ports-and-adapters) microservices.
- Async & Real-Time: Celery with RabbitMQ, Redis and Redis Streams, server-sent events, and WebSockets.
- AI: LangGraph, deepagents, and LangChain for agent orchestration across multiple GenAI providers (OpenAI, Google, and others).
- Tooling & Quality: Vitest, Playwright, Testing Library, pytest, Hypothesis; ruff and mypy; TDD with a strict line-and-branch coverage gate; Docker; CI on Azure Pipelines.
Responsibilities
- Design, build, and ship full-stack features end-to-end across the UI, backend services, and async job pipelines.
- Design and evolve service APIs, data models, and database schemas with migrations.
- Architect and integrate LLM/agent and other AI capabilities behind clean, provider-agnostic abstractions.
- Build and harden real-time systems (WebSockets, server-sent events, streaming) with reliable delivery and reconnection semantics.
- Design asynchronous processing pipelines: queuing, workers, retries, idempotency, and failure recovery.
- Manage third-party integrations (payments, AI providers, storage) behind well-defined interfaces.
- Optimize frontend and backend performance, state management, and scalability.
- Own security-sensitive concerns: authentication, authorization, secret handling, and secure service-to-service communication.
- Instrument observability: logging, metrics, tracing, and structured error handling.
- Uphold and evolve the architecture and engineering standards through technical design and code review.
- Mentor engineers and raise the quality bar across the team.
Requirements
- Proven full-stack delivery across a React/TypeScript frontend and a Python (or comparable) backend.
- Sound judgment on architecture, API design, and data modeling, with the ability to articulate trade-offs.
- Rigorous testing discipline and comfort with TDD and high coverage standards.
- Ability to work with LLM/GenAI systems; direct experience preferred, though strong engineers eager to learn are welcome.
- Technical leadership: thoughtful code review, clear technical writing, and a focus on root-cause fixes.
Nice to Have
- Production experience with LLM/agent systems (LangGraph, LangChain, or similar).
- Media or video pipelines: encoding, timeline editors, or serverless rendering.
- Async worker systems (Celery, RabbitMQ, Redis).
- Payments/billing and metering systems under concurrency.
- Hexagonal architecture, ports-and-adapters, or DDD experience.
Growth
The role offers substantial influence over architecture and a clear path toward staff-level technical leadership for engineers who raise the team's standards.
About Vijay Sales
Vijay Sales is a consumer electronics and appliances retailer, selling through its stores across India, its website and its app.
Our technology team builds the software the business runs on: order management, customer support automation over WhatsApp, reviews and ratings, and the dashboards our operations teams use every day.
The role
We are hiring full stack engineers who can take a feature from spec to production across React, Node.js and MongoDB.
You will work on customer-facing and internal products, often both in the same week. One sprint may be a review submission page used by customers on their phones. The next may be an API that pulls order status from our order management system for the support bot.
We are looking for engineers with 3 to 6 years of experience who are comfortable owning both the front end and the back end of what they ship.
What you'll do
- Build responsive, mobile-first interfaces in React using our in-house UI component libraries.
- Design and build REST APIs and background services in Node.js.
- Model data in MongoDB and keep queries fast as collections grow.
- Integrate with the systems the business runs on: order management, ERP, point of sale and ticketing.
- Build messaging flows over WhatsApp, email and SMS, including delivery tracking, retries and fallbacks.
- Work with the conversational AI team to expose order, invoice and support actions to the customer support bot.
- Write tests, review code and own your features in production, including monitoring and fixing what breaks.
- Work directly with product and operations teams to turn a business problem into a working release.
Our stack
React, Node.js and MongoDB are the core. Everything else in the table is what you will connect to or build alongside.
- Front end: React, with Vijay Sales' in-house UI component libraries
- Back end: Node.js services and REST APIs
- Database: MongoDB
- Messaging: WhatsApp Business, Amazon SES for email, RCS and SMS as fallback
- Conversational AI: LangChain and Rasa, behind the customer support bot
- Business systems: Order management (OMS), ERP, POS, Ticketing Systems
What we're looking for
- 3 to 6 years of professional experience building and shipping web applications.
- Strong JavaScript and TypeScript fundamentals: async patterns, the event loop, modules, error handling.
- Solid React skills: hooks, state management, component design, performance on low-end mobile devices.
- Hands-on Node.js experience: building REST APIs, authentication with JWT, role-based access, input validation.
- Working knowledge of MongoDB: schema design, indexing, aggregation pipelines.
- Experience integrating third-party APIs and webhooks, and handling their failures gracefully.
- Comfort with Git, code review, automated tests and CI/CD.
- Clear written and spoken communication. You will talk to operations and business teams, not only engineers.
Nice to have
- Experience with the WhatsApp Business API, Gupshup or similar messaging platforms.
- Exposure to LLM application development: LangChain, retrieval, tool calling, or bot frameworks such as Rasa.
- Background in retail, e-commerce or order management systems.
- Experience integrating with ERP or POS systems.
- Familiarity with AWS, Redis and message queues.
- React Native or other mobile app experience.
Why join and how to apply
- Your work reaches real customers and store teams quickly. There is very little distance between a release and the people who use it.
- You own features end to end, from the first conversation with the business team to production.
- You get hands-on exposure to conversational AI and LLM-based products alongside core full stack work.
Position: Senior/Lead Full Stack Engineer – Gen AI / Agentic AI
Experience: 7+ Years
Employment: Permanent Position
Location: Banglore / Hyderabad
Job Summary
We are looking for a Senior/Lead Full Stack Engineer – Gen AI / Agentic AI with strong hands-on experience in Python, React.js, MongoDB, Java/Spring Boot and Generative AI/Agentic AI.
The candidate should have experience designing and developing scalable enterprise applications and implementing production-grade LLM, RAG, AI Agent and multi-agent solutions.
Key Responsibilities
- Design, develop and maintain scalable full-stack applications using Python, React.js, MongoDB and Java/Spring Boot.
- Build production-grade Generative AI and Agentic AI applications using LLMs and modern AI frameworks.
- Develop RAG pipelines, AI agents, tool calling, memory management, planning and agent orchestration.
- Work with LangChain, LangGraph, MCP, vector databases and semantic search.
- Develop Python-based APIs, microservices and asynchronous applications using FastAPI/Flask/Django.
- Build REST APIs and event-driven microservices with focus on scalability, performance and resilience.
- Integrate LLMs, embeddings, vector stores and external enterprise tools/services.
- Implement prompt engineering, LLM evaluation, guardrails and AI observability.
- Develop responsive front-end applications using React.js.
- Work with MongoDB, SQL and hybrid data models.
- Implement CI/CD pipelines and support cloud/OCP deployments.
- Follow secure coding, testing, code quality and performance best practices.
- Participate in architecture, technical design, code reviews and mentoring of team members.
- Collaborate with business and technical stakeholders to translate requirements into scalable solutions.
Mandatory Skills
- Python
- React.js
- Gen AI / Agentic AI
- RAG + LLM
- LangChain / LangGraph
- MongoDB
- Java + Spring Boot
- REST APIs / Microservices
- Vector Databases / Embeddings
- MCP / AI Agent orchestration
Good to Have
- FastAPI / Flask / Django
- Kafka / Solace
- Docker / Kubernetes
- AWS / Azure / GCP / OCP
- CI/CD – Jenkins / GitHub Actions
- LLMOps / AI evaluation / observability
- ELK / Grafana / Splunk / AppDynamics
- SQL / NoSQL
- Agile/Scrum
Full-Stack Engineer (AI-Native) | 2-4 Years Experience
About the Role
We're hiring a Full-Stack Engineer who is equally comfortable building a polished Next.js interface and a reliable NestJS API behind it. You'll build customer-facing products, including AI-powered features like chat interfaces, streaming responses, and agent-driven workflows. You'll own features end to end, from database schema to UI, and use AI tools daily to ship faster without lowering the quality bar.
What You'll Do
Frontend
- Build responsive, accessible, high-performance UIs with React, Next.js (App Router, RSC) and TypeScript
- Build AI-facing interfaces: streaming chat UIs, tool-call/agent-status displays, and loading, error, and retry states for non-deterministic outputs
- Monitor web vitals and fix performance regressions
Backend
- Design and build scalable REST/GraphQL APIs and services with Node.js and NestJS
- Model, query, and optimize data in PostgreSQL (schema design, indexing, migrations) using an ORM like Prisma or Drizzle
- Implement auth, authorization, validation, background jobs, queues, and caching (Redis)
- Integrate LLM APIs (OpenAI, Anthropic, Gemini), including streaming (SSE/WebSockets), tool calling, retries, rate limits, and cost/latency control
AI-Assisted Engineering
- Use AI coding tools (Cursor, Claude Code, Copilot, etc.) for scaffolding, refactoring, debugging, and test writing
- Write and maintain project context for AI tools (rules files, AGENTS.md/CLAUDE.md, reusable prompts) so the whole team gets better output
- Review AI-generated code critically for correctness, security, performance, and maintainability
Team and Delivery
- Write unit, integration, and E2E tests, using AI to speed them up rather than skip them
- Take part in code reviews, sprint planning, architecture discussions, and on-call/incident follow-ups
- Document APIs, decisions, and runbooks clearly
Must-Have (Non-Negotiable)
Frontend
- Strong JavaScript (ES6+) and TypeScript
- React (hooks, state management, rendering behavior) and Next.js (App Router, SSR/SSG/RSC)
- HTML/CSS fundamentals, Tailwind or similar, responsive design, and accessibility basics
Backend
- Production experience with Node.js and a structured framework (NestJS preferred; Express/Fastify with good architecture is fine)
- Solid PostgreSQL skills: relational modeling, joins, indexes, transactions, query optimization
- API design: REST principles, pagination, versioning, error handling, input validation
- Authentication and authorization (JWT, OAuth2, sessions, RBAC)
Engineering Fundamentals
- Git, PR workflows, and code review habits
- Testing across layers (Jest/Vitest, React Testing Library, API/integration tests; Playwright/Cypress is a plus)
- Basic security awareness (OWASP top 10, secrets management, input sanitization)
AI-Assisted Development
- Daily, hands-on use of at least one AI coding tool (Cursor, Claude Code, Copilot, Windsurf, or similar)
- Ability to write clear prompts, give useful context, and break big tasks into steps an AI can handle
- Habit of reviewing, testing, and understanding AI output before committing it
- Basic understanding of how LLMs work: context windows, hallucinations, token cost, and why outputs vary
Nice to Have
- Redis, message queues (BullMQ, SQS, Kafka), or event-driven architecture
- Monorepo tooling (Turborepo, pnpm workspaces, Nx)
- Design system or component library work (shadcn/ui, Radix, Storybook)
- tRPC, GraphQL, or OpenAPI-driven type-safe clients
- Multi-tenant SaaS, payments (Stripe/Razorpay), or real-time features
- Open-source contributions, a side project, or shipped AI features you can demo
What We Expect From You
- Ownership: take a feature from schema to UI to production, and flag risks early
- Judgment over speed: AI makes you faster, and you're still accountable for every line you ship
- Security awareness: no secrets in prompts, no blind copy-paste of AI code, and sensitive data stays out of third-party tools
- Systems thinking: consider scale, failure modes, and cost, not just the happy path
- Learning speed: the AI tooling landscape changes every few months, and you keep up and share what works
- Clear communication: PRs, docs, and async updates that others can follow
If interested for this job pls contact us on this WhatsApp number, nine three one six one two zero one three two
- 6+ years of professional full-stack software engineering experience, with demonstrated ownership of production systems end-to-end (not just feature contribution within a large team).
- Backend: Strong proficiency in Python (FastAPI or Flask) — this is BuildTwin's primary backend language, used across the AI pipeline and application layer.
- Frontend: Strong proficiency in React and TypeScript, including building data-dense, interactive interfaces (dashboards, review workflows, file viewers) — not just CRUD forms.
- Database: Deep, hands-on experience with PostgreSQL — schema design, query optimization, indexing strategy, and multi-tenant data modeling.
- API design: Proven experience designing clean, versioned REST APIs, particularly ones serving as the integration layer between a backend/AI system and a frontend or third-party consumer.
- Cloud & DevOps: Production experience with AWS or Azure (compute, storage, queuing/messaging services), Docker, and CI/CD pipelines.
- Asynchronous & batch processing: Real experience with job queues (Celery, SQS, or equivalent) and designing systems that process work in parallel with proper failure isolation.
- Multi-tenant architecture: Direct experience building and securing systems that serve multiple isolated clients/tenants from shared infrastructure.






