Backend Developer (Kotlin/JVM) | AIMLEAP | Bangalore- 5 Days | 4–7 years

About the role We're looking for a backend developer to design and build scalable, secure services for mobile and web applications in connected-device products. You'll own APIs, data models and service integrations, working closely with mobile, QA and DevOps colleagues.

Responsibilities
Design and build RESTful services in Kotlin, defined API-first with OpenAPI.
Model data and write effective queries in PostgreSQL.
Implement caching and asynchronous processing using Redis and message queues.
Integrate third-party APIs and external services in a clean, extensible way.
Handle file and media uploads, including large payloads.
Implement authentication and authorization (OAuth2/OIDC).
Write automated tests and help maintain CI/CD pipelines.
Containerize services and support deployments across environments.
Add logging, metrics and tracing so services are easy to run and debug.

Must-have
4–7 years of backend development, with solid Kotlin or Java skills (willing to work in Kotlin).
Experience with Spring Boot or Ktor.
Kotlin coroutines and non-blocking I/O.
PostgreSQL, including schema design,



migrations (Flyway or Liquibase) and query tuning.
Redis and a message broker such as RabbitMQ or Kafka.
API design: versioning, pagination, idempotency and rate limiting.
Resilient integrations: retries, timeouts and circuit breakers.
Docker; working knowledge of Kubernetes/Helm.
OAuth2/OpenID Connect and REST API security best practices.
Proficiency with Git and CI/CD tooling such as GitHub Actions or GitLab CI.

Nice-to-have
Backends for wearable, IoT or connected-device products.
An identity provider such as Keycloak.
S3-compatible object storage.
Observability tools: OpenTelemetry, Prometheus, Grafana, Sentry.
Integrating AI/LLM APIs.
Cloud-agnostic or on-premise deployment experience.
Experience with AI-assisted development tools.

In your application
Links to services or projects you've built (GitHub or a short description).
A short note on one scalability or integration problem you solved.

What we offer
Greenfield product work with a contemporary stack.
Ownership of service design and architecture decisions.

📌 Back End Developer Bengaluru
🏢 AIMLEAP - Outsource Bigdata
📍 Bengaluru