Expert AI Lead Engineer

* Design, develop, and maintain responsive websites and web applications.

* Build reusable frontend components using React.js.

* Develop scalable backend APIs and services using Node.js.

* Integrate third-party services and payment gateways such as Stripe.

* Build RESTful APIs and integrate with modern databases.

* Optimize applications for maximum speed, scalability, and SEO.

* Collaborate with designers to translate Figma/UI designs into pixel-perfect interfaces.

* Implement authentication, authorization, and security best practices.

* Debug production issues and improve application performance.

* Participate in code reviews and mentor junior developers.

* Work within Agile/Scrum development processes.

Position: Full Stack Developer (React.js + Node.js)

Experience: 2–5 Years

Location: Mumbai – Chembur West (Onsite)

Job Summary

We are looking for a Full Stack Developer with strong hands-on experience in React.js and Node.js to build scalable, secure, and high-performance web applications. The ideal candidate should be comfortable owning features end-to-end, developing responsive UI, building REST APIs, integrating databases, and supporting production systems.

Key Responsibilities

• Build responsive UI using React.js, HTML5, CSS3, JavaScript (ES6+)
• Develop scalable backend services and RESTful APIs using Node.js (Express.js / NestJS)
• Work with MongoDB and MySQL (schema design, indexing, query optimization)
• Implement authentication & authorization using JWT , RBAC , Oauth
• Integrate third-party APIs, Webhooks
• Build real-time features using Socket.io / WebSockets
• Ensure performance, scalability, and security (validation, sanitization)
• Implement caching using Redis (if applicable) and optimize API response times
• Support API testing (Postman/Supertest)
• Maintain API documentation using Swagger / OpenAPI
• Debug and resolve defects, handle RCA, and support production troubleshooting with logs/monitoring
• Follow Git-based workflows, participate in code reviews, and collaborate with QA/product teams in Agile delivery

Mandatory Skills

• React.js, Node.js, JavaScript (ES6+)
• MongoDB (must), MySQL
• REST API development & integration
• Socket.io / WebSockets, Webhooks
• HTML5, CSS3
• Git
• Typescript, Express.js / NestJS
• jQuery / AJAX (basic / legacy support)

Good to Have

• Redis, Swagger/OpenAPI
• Docker, CI/CD (GitHub Actions/Jenkins)
• Cloud exposure (AWS/Azure/GCP)

Qualification

BE / BTech / MCA / MSc IT / BSc IT with 2–5 years relevant experience.

CTC: As per industry std.

AI Agent Frameworks, LangChain, LlamaIndex, OpenAI API,Zapier, HTML5, CSS3, JavaScript,bootstrap3.1,TypeScript, React.js, Next.js, Vue.js, Node.js, Python, PHP, WordPress, Headless CMS, DNS Management, SSL Configuration, Conversion Rate Optimization (CRO), A/B Testing, AWS, Google Cloud Platform (GCP), Cloudflare CDN, AWS S3, Core Web Vitals, Google Trends, Google Search Console, Ahrefs, SEMrush, Google Analytics 4 (GA4), Google Tag Manager (GTM), Meta WhatsApp Cloud API, Twilio, Webhooks, MSG91, REST APIs,claude,github,MYSQL

We are looking for a skilled Fullstack Developer with at least 10 years of experience building and maintaining responsive, scalable web applications. You will work across a full technology stack, from crafting intuitive React.js user interfaces to designing and implementing robust backend services with Node.js and PostgreSQL. This role requires strong proficiency in React.js, JavaScript/TypeScript, and the ability to collaborate closely with designers, backend engineers, and product managers to deliver exceptional end-to-end product experiences.

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.

What we need:

•        Experience in both Web + Mobile development

•        Strong understanding of APIs & system design

•        Ability to build end-to-end features

·      Maintain version control and documentation using Git / GitHub.

Roles and Responsibilities

• Design and develop responsive web applications using React.js / Next.js.
• Build and maintain scalable RESTful APIs using Node.js and Express.js.
• Implement user authentication and authorization using JWT / OAuth2.
• Manage and optimize database structures using MongoDB or MySQL.
• Integrate front-end and back-end components seamlessly for smooth user experience.
• Collaborate with UI/UX designers and product teams to deliver high-quality features.
• Participate in Agile / Scrum sprints, daily stand-ups, and code reviews.
• Optimize applications for speed, performance, and security.
• Maintain version control and documentation using Git / GitHub.

Troubleshoot and debug production issues efficiently.

Job Location- Bangalore,

Candidates from Tamil Nadu willing to relocate to Bangalore can also apply.

• 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.

Job Responsibilities:

• Design an API, not only implement one.
• Reason about indexes, query plans, transactions, migrations on live tables.
• Handle vendor and third-party integrations, done well: authentication, retries, idempotency, webhooks, rate limits, sandbox-to-production rollout, and reconciliation when the other side fails mid-flow.
• Work directly with a vendor's technical team to get an integration over the line.
• Manage Queues, background jobs and scheduled work, including what happens when a job runs twice.
• Perform React with TypeScript.
• Execute Component design, state management, forms that hold up under real user behaviour.
• Build a clean screen without a pixel-perfect design handed to you using enough CSS and layout sense.
• Ensure Performance and correctness on the browser side: loading states, error states, the ugly edge cases.
• Write Tests you actually write.
• Maintain Git discipline, CI/CD, and enough DevOps grounding to be self-sufficient: containers, environment configuration, pipelines, deployments and rollbacks.
• Understand AWS fundamentals: how your service runs, scales and fails.
• Instrument what you build logs, metrics, alerts so problems surface on a dashboard rather than in a customer complaint.
• Read monitoring output and act on it: triaging an alert, finding the root cause, and closing the loop with a fix or a tuned threshold rather than muting it.
• Keep an eye on infrastructure cost.
• Know roughly what your service costs to run, spotting the query, log stream or API call pattern that is quietly expensive, and factoring that into design decisions.
• Understand the problem first-hand.
• Spend time with the product owner or the ops team that has the problem, and see how the work happens today rather than working from a requirements document alone.
• Design, build and ship end to end.
• Take it to production and keep it healthy.
• Deploy it, monitor it, and act on what the monitoring tells you.
• Watch for Errors, latency, failed jobs and data quality and ideally spot the issue before someone reports it.
• Be mindful of what it costs to run.
• Think about instance sizing, storage, query patterns, log volume and the cost of third-party API calls before you ship, and raise it early when something is likely to get expensive.
• Integrate cleanly with vendors and partners.
• Work well with vendor teams, reading their documentation carefully and handling their failure modes gracefully.
• Be accountable for what you commit to.
• Give estimates you believe in, flag slippage early, and keep the status visible.
• Leave it documented.
• Build securely by default.

Skills Required:

JavaScript , TypeScript , Node.js , API Design , Relational Data Modelling , SQL , Indexing , Query Optimization , Transactions , Database Migrations , Vendor Integration , Authentication , Retries , Idempotency , Webhooks , Rate Limiting , Queues , Background Jobs , Scheduled Work , React , Component Design , State Management , Forms , CSS , Layout Design , Performance Optimization , Error Handling , Testing , Git , CI/CD , DevOps , Containers , Environment Configuration , Pipelines , Deployments , Rollbacks , AWS , Monitoring , Logging , Metrics , Alerting , Cost Awareness , Problem Solving , Communication , Accountability , Documentation , Security , Risk Management , Architecture Design , Trade-off Analysis

Candidate Attributes:

• Passion and hunger to make a dent in the MSME ecosystem.
• Comfortable with ambiguity and will go and resolve it, often by asking the ops or product team directly.
• Share status without being prompted, including when the news is not good.
• Care whether the change worked for the business, not only whether the story was closed.
• Own outcomes, not tickets.
• Sets the plan; trusted with the hardest and riskiest work.
• Owns architecture and the trade-offs behind it.
• Partners with function heads; helps decide what not to build.

About the Role

SwitchKart is on a mission to make technology more accessible and more sustainable — we're in the business of recommerce, giving old smartphones a second life, cutting down e-waste, and extending the lifecycle of every device we touch.

We're looking for a Senior Full Stack Developer to help us build and scale the ecosystem of platforms powering this mission — from our procurement app to our retailer app, pricing engines, and warranty systems. You'll take ownership of complex features end-to-end, mentor junior engineers, and make architectural decisions that shape how we grow.

What You'll Do

• Own Features End-to-End: Design, build, and ship full stack features across our procurement, retailer, pricing, and warranty platforms — from database schema to UI polish.

• Drive Architecture: Make key technical decisions on system design, scalability, and code structure as our ecosystem of apps grows.

• Build AI-First: Design and build systems with AI at the core — not bolted on. Think about where AI can automate, assist, or enhance the products you're building from day one.

• Build Scalable Architecture: Build and monitor a highly performant, failure-resistant platform — we take pride in doing this with a small, high-ownership team.

• Automate and Integrate: Develop tools that automate our integration processes and build data pipelines across our app ecosystem.

• Foster Technical Excellence: Champion unit and integration testing and lead meaningful code reviews across the team.

• Prototype and Validate: Create interactive prototypes to prove out technical concepts and participate in pilots for new initiatives.

• Mentor the Team: Guide junior developers through code reviews, pairing, and technical direction.

• Report Upward: Provide regular updates to management on milestones, risks, issues, and mitigation plans.

• Collaborate Cross-Functionally: Work closely with product and design to translate requirements into robust technical solutions across multiple products.

What We're Looking For

Must Have

• 4+ years of full stack development experience

• Strong proficiency in React and Node.js

• Solid experience with PostgreSQL or MySQL — schema design, query optimisation

• Experience designing and scaling production systems

• Experience deploying and managing applications on a cloud platform (AWS/GCP or similar)

• Comfortable owning a feature from concept to deployment

• Strong debugging and problem-solving skills

Good to Have

• Experience mentoring or leading junior engineers

• Track record of driving scalability and time-to-market in past cloud architecture decisions

• Exposure to CI/CD pipelines

• Experience with Docker, NoSQL databases, or distributed caching

• Experience integrating third-party REST/SOAP APIs

• Experience in a fast-moving startup environment

Why SwitchKart

• Real ownership over architecture and technical direction.

• Access to the latest AI coding agents and tools — we invest in keeping our engineers on the cutting edge.

• Work on a genuinely differentiated business with measurable impact.

• Be part of a lean team where your decisions shape the product.

• Opportunity to mentor and grow the engineering team.

Javascript, Callback, Async, Promise, Experience in writing restful APIs, Javascript, Nodejs, ReactJs, MySQL.

Immediate Joiner

Company Description

TopGrep Tech, an ISO 27001:2022 and DPIIT-certified IT pure tech product & services company. We work with global enterprises & startups, covering SaaS, MVPs, AI, RAG, MCP, reliability engineering, DevOps, and cloud innovation.

Role Description

This is a full-time on-site role located in the Greater Bengaluru Area for a Full Stack Engineer. The Full Stack Engineer will design, build, and maintain both front-end and back-end components of web applications. Candidates must demonstrate independent coding ability. Generative AI tools, AI coding assistants, and vibe-coding tools are not permitted during coding interview rounds. They will collaborate with cross-functional teams to deliver high-quality software solutions, ensure efficient system performance, and troubleshoot and resolve bugs and technical issues. This role also involves optimizing applications for maximum speed and scalability while following best practices and coding standards.

Qualifications

• Experience with Back-End Web Development, including server-side programming, APIs and database management
• Proficiency in Front-End Development, including JavaScript & Reactjs frameworks
• Strong foundation in Software Development and Full-Stack Development
• Ability to write, optimize, and debug code
• Excellent problem-solving and communication skills
• Familiarity with version control systems such as Git
• Experience with cloud platforms
• Bachelor's Engineering or Masters degree in Computer Science with equivalent practical experience

Requirements added by the job poster

• Bachelor's Degree

• Commute to this job’s location

• 1+ years of work experience with JavaScript Frameworks

• Working in an onsite setting

• 1+ years of Software Development experience