Fullstack Developer ( MERN STACK)

Mandatory (Experience 1) – Must have 3+ years of experience in Full Stack Development with hands-on experience building and deploying production-grade web applications.

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Mandatory (Skills 1) – Must have strong hands-on experience in Python or Node.js for backend development.

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Mandatory (Skills 2) – Must have experience developing REST APIs using frameworks such as FastAPI, Flask, Express.js or similar.

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Mandatory (Skills 3) – Must have hands-on experience with at least one modern frontend framework such as React.js or Angular, along with JavaScript/TypeScript.

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Mandatory (Skills 4) – Must have hands-on experience with SQL databases such as PostgreSQL, MySQL or similar.

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Mandatory (Skills 5) – Must have experience integrating frontend applications with backend APIs and third-party services.

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Mandatory (Skills 6) – Must have good understanding of OOP, data structures, software engineering practices and clean/testable code.

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Mandatory (Skills 7) – Must have experience with Git/GitHub and standard development practices including code reviews and version control.

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Mandatory (Skills 8) – Must have experience with cloud platforms such as Azure or AWS and exposure to application deployment.

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Mandatory (Skills 9) – Must have hands-on experience with Docker/containerized applications and understanding of scalable application development.

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Preferred (Experience 1) – Experience with Kubernetes, CI/CD pipelines and cloud-native deployments.

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Preferred (Experience 2) – Experience with Redis/caching, asynchronous programming, microservices or distributed systems.

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Preferred (Experience 3) – Exposure to AI/ML, Generative AI, LLM applications or RAG-based applications.

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Mandatory (Age) - Candidate's Age should be below 28

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Mandatory ( Location ) - Candidates Only From Pune & Mumbai.

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Mandatory (Education) - Must be a B.E / B.Tech from Tier 1 Colleges (IIT, NIT, IIIT, BITS, DTU, NSUT)

Technical Skills

● Strong in React / Angular / Vue.

● Required skills: state management, responsive UI design, component-based architecture.

● Strong in at least one backend stack such as Java (Spring Boot) / .NET / Python.

● Experience with REST APIs / GraphQL and authentication / authorization.

● Strong in PostgreSQL / MySQL / SQL Server.

● Knowledge of NoSQL such as MongoDB / Redis is a plus.

● Understanding of microservices / modular monolith, API-first design, and event-driven systems at a basic level.

● Familiar with Git, CI/CD pipelines, and Docker.

● Cloud technology exposure in Microsoft Azure / AWS.

* 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.

• Strong React.js development experience (70%).
• Java and Spring Boot experience (30%).
• Hands-on experience with Microservices architecture.
• Proficiency in JavaScript/TypeScript, HTML5, and CSS3.
• Experience developing and consuming REST APIs.
• Experience with JUnit and unit testing practices.
• Good understanding of relational databases and SQL.
• Cloud/SaaS exposure, preferably AWS.
• Exposure to AWS SNS, SQS, S3, RDS, and Elasticsearch.
• MongoDB experience is preferred.
• Familiarity with Git and CI/CD practices.
• Understanding of application security, performance, and scalability.

What you’ll work on

• Build features from end to end. Translate product requirements into working interfaces, backend services and database changes, and follow them through testing and release.
• Create responsive web experiences. Develop reusable React and Next.js components, connect them to APIs, and handle forms, loading states, errors and accessibility across screen sizes.
• Develop dependable APIs. Build modular Node.js services with NestJS, Fastify and related frameworks, with clear contracts, input validation, authentication, authorization and consistent error handling.
• Design and improve data models. Work with PostgreSQL and MySQL for relational data, MongoDB for document models and Neo4j for connected data. Write efficient queries, use appropriate indexes and manage schema changes carefully.
• Integrate systems and workflows. Connect third-party services and internal APIs, manage asynchronous operations, and account for failures, retries and data consistency.
• Make quality part of delivery. Write meaningful unit and integration tests, review code, reproduce bugs and document API behavior and technical decisions.
• Improve performance and security. Investigate slow pages and queries, troubleshoot service errors, and apply secure coding practices to protect application data.
• Work closely with the team. Discuss trade-offs with designers and developers, break work into manageable tasks, and communicate progress and blockers clearly.

What you’ll bring

• A solid understanding of JavaScript or TypeScript, asynchronous programming and how web applications communicate over HTTP.
• Hands-on experience building React or Next.js interfaces and Node.js APIs, with familiarity with NestJS, Fastify or similar frameworks.
• An understanding of SQL, database relationships and querying, along with an interest in document and graph databases.
• Comfort with Git, code reviews, debugging and testing your work before handing it over.
• A practical approach to problem-solving, willingness to learn and ownership of the features you build.

Bonus skills

Helpful experience, rather than prerequisites for applying.

• CI/CD pipelines: Automating builds, checks, tests and deployments, working with environment-specific configuration, and understanding release and rollback workflows.
• Jenkins: Creating or maintaining Jenkinsfiles, organizing pipeline stages, handling credentials securely and diagnosing failed builds.
• AWS: Deploying or supporting applications using services such as EC2, S3 and RDS, with awareness of IAM permissions, networking and CloudWatch logs.
• Nginx: Configuring reverse proxies, routing requests to application services, setting up HTTPS, and troubleshooting timeouts, upload limits and access logs.

Role: Senior Full-Stack Engineer — TypeScript & React

Location: Hyderabad, India (Hybrid)

Employment Type: Full-Time

Department: Engineering

About CargoSprint

CargoSprint accelerates cargo movement across air, ocean, road, and rail through innovative payment, appointment, and visibility solutions. We build technology that connects logistics operations, streamlines complex workflows, and improves the movement of goods across the supply chain.

Our engineering teams work at the intersection of logistics infrastructure, agentic AI, and modern cloud architecture to build scalable, reliable software that powers real-world freight operations.

About the Role

We are looking for a Senior Full-Stack Engineer with strong expertise in TypeScript, React, Node.js, and AWS serverless architecture to build and deliver end-to-end product features.

In this role, you will take ownership of features across the entire technology stack—from database schema design and backend APIs to intuitive, high-performance user interfaces. You will build serverless services, event-driven workflows, and AI-powered capabilities that simplify complex logistics operations for carriers, brokers, and shippers.

You will work within an established engineering ecosystem, following proven architectural patterns and delivering against a well-defined product backlog. We value engineers who combine strong technical fundamentals with pragmatic execution, sound engineering judgment, and a commitment to shipping production-ready software.

This is a hands-on engineering role for someone who enjoys building, taking ownership, and delivering meaningful product outcomes.

Key Responsibilities

• End-to-End Feature Development: Design, develop, test, and deploy full-stack features using React, TypeScript, Node.js, and PostgreSQL.
• Frontend Engineering: Build responsive, maintainable, and performant user interfaces using modern React patterns, reusable components, and effective state management.
• Backend Development: Develop scalable APIs and backend services using Node.js and AWS Lambda, following serverless and event-driven design principles.
• Cloud Architecture: Build and maintain AWS-based serverless applications, including asynchronous processing workflows and serverless container workloads where appropriate.
• Infrastructure as Code: Provision, configure, and manage cloud infrastructure using SST and infrastructure-as-code practices.
• Database Engineering: Design and evolve PostgreSQL schemas, optimize queries, manage migrations, and ensure data integrity.
• Technical Design: Contribute to architectural decisions involving data modeling, API contracts, system integration, and asynchronous processing patterns.
• Production Readiness: Maintain high standards for code quality, automated testing, observability, reliability, and operational support.
• Engineering Collaboration: Work closely with product managers, designers, and other engineers to translate requirements into reliable, maintainable solutions.
• AI-Assisted Development: Use AI-powered development tools, including Claude Code, to improve engineering productivity, accelerate implementation, and support effective problem-solving.

Required Qualifications

• 5+ years of professional software engineering experience.
• 3+ years of hands-on experience with TypeScript, React, and Node.js.
• Strong understanding of JavaScript and TypeScript fundamentals, modern frontend development, and full-stack application architecture.
• Solid React expertise, including component composition, state management, performance optimization, and reusable UI patterns.
• Proven experience building and operating serverless or event-driven backend services using AWS Lambda.
• Practical experience designing and implementing REST APIs or equivalent service interfaces.
• Strong hands-on experience with PostgreSQL, including schema design, query optimization, indexing, and database migrations.
• Experience with SST for defining and managing cloud infrastructure.
• Understanding of asynchronous processing, event-driven systems, and cloud application reliability.
• Familiarity with software testing, debugging, code reviews, version control, and production troubleshooting.
• Ability to take ownership of assigned work, work independently within established patterns, and deliver high-quality software consistently.
• Experience using AI-assisted development tools, particularly Claude Code, as part of everyday engineering workflows.

Technical Skills and Tools

Experience with the following technologies and libraries will be valuable:

• Frontend: React, TypeScript, TanStack, Motion, dnd-kit.
• Backend: Node.js, AWS Lambda, serverless application development.
• Cloud & Infrastructure: AWS, SST, serverless containers, event-driven architectures.
• Database: PostgreSQL, relational data modeling, query optimization.
• Utilities & Data Processing: Turf, ExcelJS, jsondiffpatch, dayjs.
• AI-Assisted Development: Claude Code and multi-session AI-assisted coding workflows.

Candidates are not expected to have equal expertise in every library. Strong fundamentals, adaptability, and the ability to work effectively within an existing technology stack are essential.

Preferred Qualifications

• Experience working with logistics, transportation, freight management, or supply chain platforms.
• Familiarity with Transportation Management Systems (TMS), including linehaul operations, storage, multi-stop movements, and shipment coordination.
• Understanding of Electronic Data Interchange (EDI) and integrations commonly used in logistics ecosystems.
• Experience building systems that process complex operational data and asynchronous business workflows.
• Exposure to agentic AI, AI-enabled product features, or AI-assisted software engineering workflows.
• Experience operating production applications on AWS with a focus on performance, observability, and reliability.

What Success Looks Like

In this role, success means:

• Delivering end-to-end product features with minimal supervision and a strong sense of ownership.
• Building reliable, maintainable, and performant applications across the frontend, backend, and database layers.
• Following established architectural patterns while identifying practical opportunities for improvement.
• Producing production-ready code with appropriate testing, monitoring, and error handling.
• Using AI-assisted engineering tools effectively to improve delivery speed without compromising code quality.
• Contributing to a collaborative engineering culture focused on execution, accountability, and continuous improvement.

Why Join CargoSprint?

• Real-World Impact: Build software that powers real freight operations and solves tangible logistics challenges.
• Ownership and Autonomy: Work in small, high-ownership teams with direct responsibility for meaningful product outcomes.
• Modern Technology Stack: Work with TypeScript, React, Node.js, AWS serverless services, PostgreSQL, and modern infrastructure tooling.
• AI-First Engineering: Contribute to a roadmap where AI is a core part of product development, not an isolated experiment.
• Collaborative Environment: Work with a globally distributed engineering team that values pragmatic problem-solving and effective execution.
• Hybrid Flexibility: Enjoy a hybrid working arrangement based out of our Hyderabad office.

Work Location

Hyderabad, India | Hybrid | Full-Time

If you are a hands-on full-stack engineer who enjoys solving complex technical problems, building reliable cloud-native applications, and delivering software with measurable real-world impact, we would love to hear from you.

Join CargoSprint and help build the technology that keeps global freight moving.

Roles and Responsibilities

• Build features across the stack — Implement product features that span the React frontend, the GraphQL federation, the Node.js microservices, and the underlying Postgres and ClickHouse stores.
• GraphQL federation work — Add types, resolvers, and subgraph capabilities to the federated Platform API. Keep subgraph boundaries clean. Respect RBAC enforcement at the federation layer.
• Developer experience surfaces — Lift NPS through intuitive UI/UX, fast onboarding, in-browser testing, clear error states, code-snippet generation, and fast time-to-first-successful-call.
• Billing and commerce features — Ship subscription, plan, invoice, payout, and overage features that touch Stripe / PayPal webhooks, the billing state machine, and the usage ledger.
• API catalog and discovery — Improve marketplace search and the API listing experience, including the ranking signals that flow in from the analytics and search stack.
• Observability and quality — Instrument every feature you ship — logs, traces, and metrics are part of the definition of done, not a follow-up ticket. Write the alerts that page you, not someone else.
• Testing discipline — Own unit and integration tests for everything you ship; contribute to the end-to-end and contract test suites that protect the federation and the billing path. A feature without tests is not done.
• On-call and incident response — Take part in on-call rotations; investigate proxy errors, GraphQL federation timeouts, and billing webhook anomalies. You build it, you run it.
• LLM-assisted engineering — Use LLM-based coding and agentic tooling to evolve how features are shipped, reviewed, and tested.

What Success Looks Like

•  Features you ship measurably improve activation, time-to-first-successful-call, and developer NPS quarter over quarter.
• The GraphQL federation surface you touch stays fast, well-typed, and intuitive for the next engineer.
• Billing, subscription, and overage flows you build are accurate, auditable, and replayable — providers and consumers trust the numbers.
• ou ship at a confident cadence — PRs land daily, deploys are routine and boring, regressions are rare.
• You leave the code, the docs, and the tests in better shape than you found them.

What You Bring

• 4–7 years of full-stack product engineering experience, with non-trivial work on production systems used by real customers.
• Strong TypeScript/Node.js; comfort writing both frontend (React) and backend services.
• Hands-on GraphQL experience — ideally federation (Apollo Federation / Mercurius / similar), schema design, subgraph composition, persisted queries, performance tuning.
• Solid SQL and comfort with MySQL or Postgres in production; bonus for ClickHouse or Redis experience.
• Familiarity with AWS (EKS, Lambda, Aurora) and containerised deployment on Kubernetes.
• Comfortable with modern observability, feature flags, and CI/CD pipelines.
• Care for developer experience — APIs you would want to consume, docs you would want to read, errors you would want to debug.
• Bonus: experience with billing/commerce systems (Stripe / PayPal), API gateways, rate-limiting, agent protocols (MCP, A2A, x402), or LLM-based developer tooling.
• You are pragmatic, ship-oriented, and comfortable in a system big enough that no one person knows all of it.

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.

Job Description

This is a remote position.

Experience Level

This role is ideal for engineers with 4-9 years of hands-on software development experience, particularly in ReactJS, Node, and TypeScript.

Role Overview

If you're a Software Craftsperson who takes pride in clean, test-driven code and believes in Extreme Programming principles, we'd love to meet you. At Incubyte, we're a DevOps organization where developers own the entire release cycle, meaning you'll get hands-on experience across programming, cloud infrastructure, client communication, and everything in between. Ready to level up your craft and join a team that's as quality-obsessed as you are? Read on!

What You'll Do

• Write Tests First: Start by writing tests to ensure code quality
• Clean Code: Produce self-explanatory, clean code with predictable results
• Frequent Releases: Make frequent, small releases
• Pair Programming: Work in pairs for better results
• Peer Reviews: Conduct peer code reviews for continuous improvement
• Product Team: Collaborate in a product team to build and rapidly roll out new features and fixes
• Full Stack Ownership: Handle everything from the front end to the back end, including infrastructure and DevOps pipelines
• Never Stop Learning: Commit to continuous learning and improvement

Requirements

• 4+ years of experience in ReactJS, Node, TypeScript, LLMs and PostgreSQL
• Comfortable working with Claude or other AI-powered tools
• Prior experience with Chrome extensions is preferred
• Good to have - Next.js, HTML, CSS, DOM APIs
• Strong problem-solving attitude and a bias for action
• Experience with browser testing frameworks, ex. Puppeteer, Playwright, etc.
• Deep understanding of DOM manipulation, browser APIs and web standards
• Asynchronous programming (Promises, async/await)
• Strong debugging skills (Browser devtools/JavaScript)
• Knowledge of web security concepts and cross-origin restrictions
• Familiarity with Agile and eXtreme Programming methodologies in a continuous deployment environment
• Interest in mastering technologies like web frameworks, TDD, CI tools, and performance optimization
• Working knowledge of source control, writing user stories, and technical documentation

About Role

Full Stack Developer – .NET Core & React

Key Responsibilities

• Design, develop, and maintain scalable web applications using .NET Core (ASP.NET Core) and React.js.
• Build and consume RESTful APIs and microservices.
• Develop responsive and user-friendly front-end applications using React.js.
• Collaborate with business stakeholders, product owners, and technical teams to gather requirements and translate them into effective technical solutions.
• Write clean, maintainable, and high-quality code following industry best practices.
• Participate in code reviews, design discussions, and technical planning.
• Deploy, manage, and troubleshoot applications running on Kubernetes.
• Work closely with DevOps teams to support CI/CD pipelines and release activities.
• Optimize application performance, scalability, and reliability.
• Troubleshoot and resolve production issues and provide ongoing application support.
• Contribute to technical documentation and knowledge-sharing initiatives.

Required Skills

• 2–7 years of software development experience.
• Strong hands-on experience with C# and .NET Core / ASP.NET Core.
• Strong experience in React.js development.
• Experience building REST APIs and microservices.
• Hands-on experience with Kubernetes.
• Experience with SQL Server or other relational databases.
• Good understanding of Git version control and CI/CD practices.
• Strong problem-solving and debugging skills.
• Excellent communication and stakeholder management skills.

Good to Have

• Experience with AWS services such as:
• EC2
• EKS
• S3
• Lambda
• CloudWatch
• IAM
• Experience with Docker and containerized application deployment.
• Exposure to Agile/Scrum development methodologies.