Software Engineer
3 days ago
Location: Kolkata, West Bengal
Experience: 3 Years
Tech Stack: , Typescript, JavaScript, GraphQL, PostgreSQL, MongoDB, Redis, Neo4j,
Elasticsearch etc.
Domain: Fintech / Finance Distributed Systems
About the Role
We are looking for a highly skilled Senior Backend Engineer who can architect, build, andscale robust backend systems powering high-growth consumer and fintech applications. This role involves solving complex engineering challenges, optimising database performance,improving system reliability, building secure infrastructures, and contributing to data-driven product decisions.You will collaborate closely with cross-functional teams such as product, design, and DevOps, and will play a key role in shaping the backend architecture and engineering roadmap.
Key Responsibilities
Backend Architecture & Development
● Design, develop, and maintain scalable backend services using , TypeScript,
Express, Apollo GraphQL, SQL and NoSQL databases.
● Build and optimize REST & GraphQL APIs with high performance, low latency, and
strong reliability.
● Architect microservices and modular backend components for high availability and
horizontal scalability.
Database Engineering & Optimization
● Lead end-to-end database architecture across PostgreSQL, MongoDB and Redis.
● Perform large-scale schema migrations, indexing strategies, performance tuning, query
optimisation, and replication-based setups.
● Implement caching layers using Redis, including intelligent caching strategies.
Infrastructure, DevOps & Security
● Manage production-ready infrastructure on AWS (EC2, RDS, S3, CloudFront).
● Implement CI/CD pipelines on Azure DevOps
● Ensure security best practices and compliance with fintech-grade data protection.
Performance & Reliability
● Improve codebase quality, stability, and resilience through testing frameworks and
automation.
● Diagnose and solve production issues, memory leaks, CPU spikes, and scaling
bottlenecks.
● Cross-functional Collaboration
● Work with product managers and designers to define technical requirements and
improve user experience.
● Mentor junior engineers and contribute to code reviews, architecture discussions, and
engineering best practices.
Key Achievements Expected from This Role
● Successfully optimize backend systems resulting in measurable gains in reliability,
performance, and user engagement.
● Lead large-scale database architecture refactoring projects.
● Deliver secure, compliant fintech-ready solutions.
● Increase product growth and engagement through analytics-driven engineering.
Required Skills
● Languages: JavaScript, TypeScript
● Frameworks & Runtime: , Express
● APIs: GraphQL, REST
● Databases: PostgreSQL, MongoDB, Redis
● Cloud & DevOps: AWS (EC2, RDS, S3), Nginx, PM2
● Caching & Performance: Redis, Indexing strategies, Query tuning
● Security: API security, access control
● Tools: Azure DevOps, CI/CD, GIT Version control
Preferred Skills
● Experience in fintech, payments, or subscription systems
● Familiarity with TypeORM and repository patterns
Soft Skills
● Strong ownership and accountability
● Ability to break down complex problems
● Excellent communication and documentation skills
● Leadership in mentoring, design discussions, and technical strategy
Job Types: Full-time, Permanent
Pay: ₹500, ₹1,200,000.00 per year
Benefits:
- Health insurance
- Provident Fund
Work Location: In person
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