Fullstack Developer at HaystackAnalytics · Navi Mumbai · 2 - 4 years · ₹5L - ₹10L / yr · Profitable · Posted 10 Feb 2026

Job Description
Position - Full stack Developer
Location - Mumbai
Experience - 2-5 Years
Who are we
Based out of IIT Bombay, HaystackAnalytics is a HealthTech company creating clinical genomics products, which enable diagnostic labs and hospitals to offer accurate and personalized diagnostics. Supported by India's most respected science agencies (DST, BIRAC, DBT), we created and launched a portfolio of products to offer genomics in infectious diseases. Our genomics based diagnostic solution for Tuberculosis was recognized as one of top innovations supported by BIRAC in the past 10 years, and was launched by the Prime Minister of India in the BIRAC Showcase event in Delhi, 2022.
Objectives of this Role:
- Work across the full stack, building highly scalable distributed solutions that enable positive user experiences and measurable business growth
- Ideate and develop new product features in collaboration with domain experts in healthcare and genomics
- Develop state of the art enterprise standard front-end and backend services
- Develop cloud platform services based on container orchestration platform
- Continuously embrace automation for repetitive tasks
- Ensure application performance, uptime, and scale, maintaining high standards of code quality by using clean coding principles and solid design patterns
- Build robust tech modules that are Unit Testable, Automating recurring tasks and processes
- Engage effectively with team members and collaborate to upskill and unblock each other
Frontend Skills
- HTML 5
- CSS framework ( LESS/ SASS / Tailwind )
- Es6 / Typescript
- Electron app /Tauri)
- Component library ( Bootstrap , material UI, Lit )
- Responsive web layout ( Flex layout , Grid layout )
- Package manager --> yarn-/ npm / turbo
- Build tools - > (Vite/Webpack/Parcel)
- Frameworks -- > React with Redux of Mobx / Next JS
- Design patterns
- Testing - JEST / MOCHA / JASMINE / Cypress)
- Functional Programming concepts
- Scripting ( powershell , bash , python )
Backend Skills
- Nodejs - Express / NEST JS
- Python / Rust
- REST API
- SOLID Design Principles
- Database (postgresql / mysql / redis / cassandra / mongodb )
- Caching ( Redis )
- Container Technology ( Docker / Kubernetes )
- Cloud ( azure , aws , openshift, google cloud)
- Version Control - GIT
- GITOPS
- Automation ( terraform , ansible )
Cloud Skills
- Object storage
- VPC concepts
- Containerize Deployment
- Serverless architecture
Other Skills
- Innovation and thought leadership
- UI - UX design skills
- Interest in in learning new tools, languages, workflows, and philosophies to grow
- Communication
To know more about us- https://haystackanalytics.in/

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Role Overview
We are seeking a skilled Full Stack Developer with 4–6 years of hands-on experience in developing modern web applications using React.js and Node.js. The ideal candidate should be capable of independently developing application features, integrating backend services, and contributing to scalable, secure, and high-quality enterprise applications.
The candidate should also be comfortable using AI-assisted software development tools to improve development productivity, code quality, testing, and documentation while adhering to engineering best practices.
Key Responsibilities
· Develop and maintain frontend applications using React.js.
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AI Development Expectations
· Use AI-assisted coding tools such as GitHub Copilot, Cursor, Claude Code, or similar.
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Required Technical Skills
Frontend: React.js, JavaScript (ES6+), HTML5, CSS3, Responsive UI, Redux/Context API
Backend: Node.js, Express.js, REST APIs, JWT/OAuth
Database: PostgreSQL, SQL development, Database fundamentals
Messaging: RabbitMQ, Event-driven communication
Database Migration: Liquibase
Security: OpenBao, Secure coding, API security
Development Practices: Git, CI/CD, Docker basics, Unit Testing, Agile/Scrum, Clean Code
Preferred Qualifications
· Experience working on enterprise web applications.
· Exposure to microservices-based architectures.
· Familiarity with Docker and Kubernetes.
· Experience integrating third-party APIs.
· Basic understanding of application monitoring and logging.
· Exposure to cloud platforms.
Soft Skills
· Analytical and problem-solving skills.
· Strong communication and teamwork.
· Ability to work independently.
· Willingness to learn new technologies.
· Ownership and accountability.
· Adaptability in Agile environments.
Education
Bachelor's degree in Computer Science, Information Technology, Engineering, or a related discipline.
What We're Looking For
We are looking for a motivated Full Stack Developer who can quickly become productive in an Agile team and contribute to the successful delivery of the Project while embracing AI-assisted development practices.
What role will you play?
As a Full Stack Engineer, you will play a pivotal role in our development team, bridging the gap between the visual elements and the server-side infrastructure. You will be instrumental in developing full-fledged, scalable applications by combining the art of design with the science of programming. With your expertise in both front-end and back-end technologies, you will ensure the entire stack is designed and built for speed and functionality.
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What you offer
- Proficiency in Typescript and a good understanding of React
- Solid experience with the Node.js, including the ability to develop RESTful APIs
- Experience with containerisation of service using Docker
- Knowledge of modern authorisation mechanisms, such as JSON Web Token (JWT)
- Familiarity with SQL databases, such as PostgreSQL
- Experience with Kafka or other event driven tools and tech
- Nice to have some experience integrating with LLMs through open AI, Gemini etc.
- Nice to have exposure to AI tooling – Claude, Copilot, Cursor etc.
- AWS experience is a nice to have
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.
We are looking for a Full Stack Developer responsible for developing and maintaining web applications across frontend and backend.
Key Responsibilities:
- Develop responsive web applications and REST APIs.
- Work with frontend frameworks such as React/Angular.
- Develop backend services using Node.js/Java/.NET/Python.
- Work with SQL/NoSQL databases.
- Write clean, scalable, and secure code.
- Debug issues, perform testing, and optimize application performance.
- Collaborate with development, QA, and product teams.
Required Skills: JavaScript/TypeScript, React/Angular, backend development, REST APIs, SQL/NoSQL, Git, and basic cloud/DevOps knowledge.
Full Stack Developer — Node.js & React
Experience: 4-5 years
Employment Type: Permanent, Full-time
Desired Skill: Node, React, AWS, Typescript, GraphQL APIs
Work Mode: Remote
Availability: Immediate Joiners
We are looking for a Full Stack Developer to implement functional features and resolve production support and on-call tickets. You will build GraphQL APIs, UI screens, and integrations based on defined requirements and designs.
Responsibilities
- Develop and maintain features using Node.js, TypeScript, React, and Next.js.
- Build GraphQL APIs, database integrations, and backend workflows.
- Investigate support issues, identify root causes, and deliver reliable fixes.
- Write automated tests and collaborate with product, design, and engineering teams.
Required skills
- Strong experience with Node.js, Express, TypeScript, React, GraphQL, and PostgreSQL.
- Strong analytical, troubleshooting, and debugging skills across frontend and backend systems.
- Familiarity with automated testing and AWS environments.
Our stack
React SPA (Vite), Next.js, MUI, React Router, urql, tRPC; PostGraphile, slonik, graphile-worker, Temporal; PostgreSQL and DynamoDB; Storybook, Vitest, Cypress; AWS and Terraform.
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
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
Work collaboratively with other developers and other product teams members to craft production ready features that have Quality built-in from inception
Collaborate with business analysts, product owners to confirm the requirements if they are not clear.
Be comfortable having technical conversations with the wider technology teams in Australia, Manila and India.
Good English communication is must.
Design solution for modules and execute them. Should be able to design and architect solutions with help of diagrams
Good at writing code which is testable, divided into clean and small modules.
Good at using ci-cd tools like
Jenkins, Harness for the purpose of
deploying code changes.
4+ years of proven experience as an Fullstack Developer primarily in javascript background
Must have experience in design and development of automation frameworks such as Javascript, Typescript, Nodejs, reactjs, Nextjs, Graphql, PostgresDB. If not postgres then they should have good amount of experience in working in SQL DB server.
Should be confident running CI/CD pipelines for testing/deploying their work
Exposure to teams with engineering practices including DevOps, high levels of automation and infrastructure as code Excellent communication skills






