Top Backend Jobs in Kolkata

Own technical direction and hands-on execution for major products, systems, and engineering initiatives. Design scalable systems across backend, frontend, APIs, databases, and infrastructure; write and review code; lead architecture decisions; solve production issues; convert ambiguous problems into technical plans; improve engineering quality; and mentor engineers across teams.

Provide technical leadership and hands-on engineering across AI, data, backend, and frontend systems. Drive architecture, remove technical risks, set engineering standards, mentor senior engineers, and influence cross-team technical direction.

Develop and maintain scalable backend services for an AI-native facility management platform. Responsibilities include building high-performance REST APIs with Python and FastAPI, managing MongoDB data, integrating third-party APIs, processing JSON and CSV data, and owning services through deployment. The role involves collaboration with product and engineering teams to deliver reliable product capabilities and improve performance, scalability, and maintainability.

Seeking a skilled Backend Developer to build efficient systems using ExpressJS and manage PostgreSQL databases. Responsibilities include API development, database optimization, and team collaboration.

Design, build, and operate AEM (Cloud Service) solutions: develop Sling/HTL components, implement dispatcher and caching strategies, model content/JCR structures, enable headless REST APIs, and deliver Java backend services (OSGi, servlets) with logging and automated tests.

Design, build, and maintain backend APIs and services for a real-time supply chain visibility platform. Own system architecture, real-time event ingestion, data normalization, ML integration, monitoring, and production debugging while collaborating with Product and Data Science to deliver scalable, high-availability features.

Lead and mentor an engineering team while defining technical roadmaps, managing hiring and resource allocation, and overseeing project delivery. Build and maintain enterprise applications using Java Spring and React, guide cross-functional requirements, conduct code reviews, troubleshoot performance issues, and provide client-facing technical leadership. The role combines hands-on software engineering with people management and strategic technical oversight.

Design and maintain scalable Java and Spring Boot backend services, REST APIs, microservices, and event-driven systems. Build cloud-native applications using Docker, Kubernetes, and AWS while ensuring reliability, security, observability, and performance. Use AI-assisted development tools for coding, testing, debugging, documentation, and reviews. Participate in architecture discussions, production support, incident response, and on-call rotations. Collaborate across engineering and product teams and mentor other engineers.

Design, develop, and maintain scalable backend software using Java, Spring Boot, Apache Camel, and microservices. Build system integrations, search capabilities, and performant services with Elasticsearch and MongoDB. Work with Java/JEE, RESTful services, JSON/XML, and Oracle SQL. Debug code, troubleshoot issues, ensure software reliability, monitor technology trends, and communicate effectively with project teams.

Own the verification API suite and provider integration layer. Build resilient primary and fallback adapters, normalize external responses, protect PII, and deliver contract-tested endpoints with OpenAPI documentation, fixtures, pricing, and error copy. Implement retries, timeouts, circuit breakers, failover, canary testing, and charge-correctness logic. Build reconciliation jobs matching provider calls to invoices, while maintaining reliable weekly releases and low endpoint error rates.

Build and maintain production backend APIs for corporate intelligence and business verification. Responsibilities include fixing bugs, writing tests, developing endpoints, integrating third-party verification vendors, normalizing external API responses, improving OpenAPI specifications and documentation, and owning a small set of endpoints, admin tools, or alert/webhook functionality with mentorship and code review.

Develop, test, and deploy Java/Scala microservices for supply-chain-finance modules. Build Spark batch/streaming jobs, design Kafka event pipelines, integrate bank/ERP systems via Talend/REST, and produce Jasper reports. Maintain Kubernetes deployments, ensure ≥80% unit-test coverage, troubleshoot via Elasticsearch and Prometheus/Grafana.

As a Backend Developer, you will design and run applications through the software development lifecycle, requiring strong coding and problem-solving skills. Must have expertise in Golang, Python or Node JS, and experience in cloud deployments and RDBMS.

Work on backend engineering tasks: design and implement scalable REST APIs and database schemas, write clean Node.js code, build tests and caching, collaborate in architecture and code reviews, document changes, and provide technical support across teams within a fintech-focused product.

Design, develop, and maintain scalable backend services and REST APIs using Java and Spring Boot. Own end-to-end implementations, troubleshoot production issues, optimize databases and performance, enforce security and testing best practices, collaborate with cross-functional teams, and drive system reliability and scalability.

Looking for Front-to-Back end developers for a hybrid cloud SaaS platform, primarily using NodeJs, ReactJs, and REST API development in a Linux environment.

The Node JS Developer will enhance integrations, improve reliability, expand capabilities, and contribute to open-source innovations while ensuring high-quality Node applications.

The Backend Software Engineer will develop and maintain backend systems for data processing related to coffee farming, utilizing Python and PostgreSQL. Responsibilities include feature development, problem-solving, and adapting systems to regulatory changes while ensuring system resilience.

Lead backend architecture and build scalable, high-concurrency services and APIs (Node.js) powering web and mobile. Own components end-to-end, manage CI/CD and infrastructure (IaC, containers, cloud), improve reliability, and collaborate with PM/design to deliver core features like live interactions and checkout.

The role involves back-end development using .NET Core and SQL, contributing to Jibble 2.0 API integrations, and collaborating with product and design teams.

Develop and maintain scalable Java backend systems using Spring Boot, microservices, and REST APIs. Design reliable backend architectures, troubleshoot and optimize services, conduct code reviews, improve security and performance, document technical decisions, and collaborate with distributed engineering teams on production-grade software supporting AI training and evaluation workflows.

Develop and maintain scalable backend software using Java, Spring Boot, microservices, Elasticsearch, MongoDB, and Java/JEE technologies. Build RESTful services, process JSON/XML data, write Oracle SQL queries, debug code, troubleshoot issues, and contribute to software design and project success. The role requires staying current with emerging technologies and communicating effectively in a fully remote environment.

Own and improve high-scale backend systems and TB-scale data pipelines. Ensure microservice availability, performance, resilience, and reliability. Build deployment, monitoring, and incident-response automation while contributing scalable backend features. Take end-to-end ownership of production systems, debug complex issues, and collaborate with founders and global teams in a high-ambiguity startup environment.

Build scalable backend services and APIs for real-time logistics and delivery operations. Develop and ship end-to-end product features, troubleshoot production issues across system layers, optimize databases, caching, performance, reliability, and scalability, and collaborate with product and operations teams to solve real-world problems.

Designs, builds, and maintains scalable Python backend services, secure RESTful and GraphQL APIs, and AWS serverless microservices. Responsibilities include data modeling, database optimization, authentication and authorization, testing, code reviews, CI/CD, production monitoring, troubleshooting, and release processes. The role collaborates with frontend, DevOps, data science, AI, design, and product teams to deliver production-grade analytics and AI applications.