Top Backend Jobs in Kolkata

Lead backend architecture and engineering: design scalable APIs and services, mentor engineers, write complex code, enforce best practices for databases, testing, observability, and integrate ML/LLM workloads.

Design, develop, and maintain scalable backend services; implement secure APIs; optimize system performance and reliability; collaborate with cross-functional teams.

Maintain and enhance Node.js/TypeScript backend services for a SaaS platform, ensuring uptime, scalability, and high-performance APIs. Optimize MongoDB, implement Redis and job queues, manage AWS infrastructure, enforce security and compliance (GDPR, email handling), document APIs, write tests, and debug production issues.

Design and implement backend game engine and RNG systems for slots and table games. Build deterministic, auditable, high-concurrency real-time gameplay systems, manage bet lifecycle, integrate wallets/transactions, optimize performance, and develop simulation/test systems for RTP validation while collaborating with frontend and game client teams.

As a Senior Back End Developer, you'll design and optimize scalable software back-end systems for web and mobile applications, collaborating with various teams to enhance platform reliability and performance.

Develop backend services using Java/J2EE and Spring Boot. Design microservices (HL/LL), implement cloud infrastructure, integrate via MQ/Kafka/REST, enforce security (JWT/OAuth/Kerberos), use CI/CD (Maven, Docker, Jenkins), and work with SQL.

Design, build, and maintain scalable Java backend services and APIs (Spring Boot). Collaborate with cross-functional teams, optimize performance, ensure security, troubleshoot issues, integrate third-party services, and maintain documentation.

Expert-level backend engineer to lead and mentor a team, design and implement large-scale distributed e-commerce systems, drive architectural improvements, write high-quality code, and collaborate with product and cross-functional teams in an Agile/Scrum environment.

Design and build Java/Spring Boot microservices for a Notification Hub: routing, preference sync, webhook ingestion, Pub/Sub consumers, Avro schema processing, vendor adapter/API integrations, resilience, and operational troubleshooting.

Design, develop, and maintain scalable server-side services and APIs. Manage SQL/NoSQL databases, write tests, debug and optimize performance, document systems, and collaborate with frontend, product, and DevOps teams.

Design, build, and maintain scalable backend services and RESTful APIs using Java and Spring Boot. Implement event-driven architectures with Kafka, manage data in PostgreSQL/Redis, ensure performance and resilience, troubleshoot production issues, participate in code reviews, and collaborate with cross-functional teams for releases.

Design, develop, and maintain Java-based backend services using Spring frameworks and Kafka. Build scalable RESTful APIs, work with MySQL/MongoDB, containerize with Docker, deploy on Kubernetes, and follow CI/CD and Agile practices while collaborating in a team.

Design, implement, and maintain scalable Java backend services and APIs using Spring Boot. Collaborate with cross-functional teams, optimize performance, ensure security, integrate third-party services, write testable code, and maintain documentation.

Design, develop, and maintain server-side logic, databases, and RESTful APIs/microservices. Collaborate with front-end and product teams, ensure security, perform code reviews, troubleshoot issues, and participate across the software development lifecycle.

Design, configure, and support backend software and APIs; manage configuration files and environments; test and document API endpoints; collaborate on system data flow; participate in large-scale live data migrations (billions of records) into FinCloud; produce documentation and troubleshooting guides; work in agile teams and support integration and observability efforts.

Design, build, and maintain scalable Java Spring Boot microservices on GCP; develop RESTful APIs, implement CI/CD, optimize performance, ensure security, monitor production, and collaborate with cross-functional teams.

Lead design and implementation of backend services and distributed systems for real-time AI automation. Build scalable, observable microservices, streaming data pipelines, and async event-driven architectures. Collaborate across frontend, product, and DevOps to ensure performance, reliability, and seamless integration at scale.

The Senior Backend Engineer will design and implement scalable backend systems, manage microservices architecture, databases, and CI/CD pipelines, while mentoring junior engineers.

Develop and maintain back-end web applications, ensuring efficient integration with front-end systems, optimizing performance, and collaborating with QA for testing.

The Backend Engineer will implement new SDK and Indexer features, automate testing, support integration, and oversee production releases.

The role involves owning product feature development, participating in system design, and maintaining software performance in an agile setting.

Build and scale SigNoz's alerting features and integrations. Design and implement APIs and backend services in Go, ensure reliability for thousands of alerts, and drive end-to-end delivery while collaborating in a remote, high-ownership team.

As a Senior Backend Engineer, you will implement ERP data connectors, upgrade backend APIs, maintain data storage, and ensure service stability. You'll collaborate with global teams to enhance data architecture and govern data integrity while utilizing technologies like Go or Python and cloud infrastructures.

As a Backend Engineer, you will tackle complex backend application challenges, develop systems, ensure quality, and innovate collaboratively.

Build and maintain backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, FX, KYC and risk flows. Design reliable, secure, observable systems for real transactions at scale, integrate with partners and AI services, ensure data integrity and incident handling, and collaborate with product, frontend, mobile and AI teams to launch and improve financial products and operational workflows.