Full Stack Engineer

Mastek; Dadri; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Mastek in India is seeking a software engineer to build features across the stack: React/Redux on the frontend and Python/FastAPI services on the backend. You will design and integrate REST APIs, including rate limiting, retries, and idempotency for external integrations, ensuring robust interfaces.

You will model and query data across PostgreSQL and MongoDB, work with Kafka for cross-service communication, and contribute to unit and integration tests.

Qualifications

• Proficiency with React and Redux for frontend development.
• Experience with Python web frameworks such as FastAPI or Django.
• Comfort working with SQL and NoSQL databases.
• Experience building automated tests for frontend and backend.
• Proficient in Git workflows and collaboration.
• Strong fundamentals in data structures and algorithms.

Responsibilities

• Build features across the stack with React/Redux on frontend and Python/FastAPI on backend.
• Design and integrate REST APIs with rate limiting, retries, and idempotency for external integrations.
• Model and query data across PostgreSQL and MongoDB as needed.
• Work with Kafka streams for cross-service communication.
• Write unit and integration tests for both frontend and backend.
• Debug production issues and use observability tools to find root cause.
• Collaborate with product/design and QA on test coverage; contribute to CI/CD pipelines.

Skills

React & Redux

Python Web Frameworks

SQL & NoSQL

Automated Testing

Git Collaboration

Data Structures & Algorithms

Tools

Docker

Kafka

Observability Tools

Job description

• Build features across the stack: React/Redux on the frontend, Python/FastAPI services on the backend
• Design and integrate REST APIs, including rate limiting, retries, and idempotency for external integrations
• Model and query data across MongoDB, PostgreSQL, and Elasticsearch as needed
• Work with Kafka based event streams for cross-service communication
• Write unit and integration tests on both ends of the stack (Jest/React Testing Library on frontend, pytest on backend)
• Debug and triage production issues across the stack, using observability tools (OpenTelemetry, NewRelic) to find root cause
• Collaborate with product and design on features, and with QA on test coverage
• Contribute to CI/CD pipelines (GitLab CI) and Docker based deployments
• Apply secure coding practices, given the platform handles healthcare data

Required skills

• Working knowledge of React (hooks, state management with Redux) and a Python web framework (FastAPI or Django)
• Comfortable working with both relational (PostgreSQL) and NoSQL (MongoDB) databases
• Experience writing automated tests on both frontend and backend
• Proficient with Git and collaborative workflows
• Strong CS fundamentals: data structures, algorithms, and system design basics

Good to have

• Experience with Kafka or other event streaming/message queue systems
• Experience with LLM/AI tooling: LangChain, RAG pipelines, or agent frameworks
• Familiarity with Docker and containerized deployments
• Familiarity with observability tooling (OpenTelemetry, NewRelic, Grafana)
• Exposure to multi-cloud storage SDKs (AWS, Azure, GCP)
• Healthcare interoperability background (FHIR, HL7, EHR integrations such as Epic or Cerner) - not required, general distributed systems thinking matters most