Back End Developer

Position Summary

We are looking for a Senior Backend Developer who is strong in both Java and Python to design, build, and maintain scalable backend services for modern web, mobile, operational, and integration-driven platforms. The ideal candidate should have hands-on experience with Java/Spring Boot for production backend systems, and practical Python experience for APIs, services, automation, integrations, data workflows, and backend tooling.

This role is suited for a hands-on engineer who can take ownership of APIs, database design, service architecture, integrations, performance, security, testing, documentation, and production support. The person should be comfortable working across existing systems as well as building new backend components in the right technology for the problem.

Key Responsibilities

• Design, develop, and maintain backend services using Java, Spring Boot, and Python.
• Build secure, scalable, and well-documented REST APIs for web, mobile, admin, operational, and third-party integration use cases.
• Develop Python-based backend services, automation scripts, integration adapters, reporting jobs, internal tools, and data-processing workflows where required.
• Design and maintain PostgreSQL database schemas, migrations, indexes, constraints, optimized queries, and data integrity rules.
• Implement reliable service-layer logic, validation, error handling, pagination, filtering, idempotency, transaction management, and background processing.
• Work with event-driven patterns using Kafka, message queues, or similar platforms for asynchronous workflows, notifications, telemetry, analytics, and integration events.
• Use Redis or equivalent caching/session layers to improve performance, reduce database load, and support fast backend workflows.
• Integrate with external systems such as payment gateways, notification providers, reporting tools, CRM/ERP systems, cloud services, and other third-party platforms as required.
• Implement authentication, authorization, RBAC, audit logging, input validation, secure API patterns, and safe handling of sensitive data.
• Write clean, maintainable, testable code and participate in code reviews across Java and Python codebases.
• Create and maintain unit tests, integration tests, API tests, technical documentation, and developer handover notes.
• Support production deployments, monitoring, logging, troubleshooting, incident investigation, performance optimization, and operational reliability.
• Collaborate with frontend, mobile, DevOps, QA, product, and business teams to translate requirements into reliable backend solutions.
• Mentor junior developers where required and help improve backend engineering standards across the team.

Required Skills and Experience

• 4 to 6 years of backend development experience, with strong hands-on experience in Java/Spring Boot and practical experience with Python backend development, automation, integrations, scripting, or data workflows. Stronger candidates with 6+ years of senior-level backend experience may also be considered.
• Strong practical Python experience, preferably with FastAPI, Django, Flask, or similar backend/API frameworks.
• Strong understanding of REST API design, API versioning, authentication, authorization, error contracts, pagination, documentation, and OpenAPI/Swagger or similar tools.
• Strong PostgreSQL experience, including schema design, joins, indexes, transactions, query optimization, migrations, constraints, and data integrity practices.
• Practical experience with Kafka, message queues, or event-driven systems, including producers, consumers, retries, duplicate handling, idempotency, and failure recovery.
• Good understanding of distributed systems concepts such as eventual consistency, retries, background processing, service boundaries, and failure-safe workflows.
• Experience with Redis or similar caching/session technologies.
• Experience with Docker, CI