Backend Developer

Outsource Bigdata; Bengaluru; Hybrid; INR 1,200,000 - 2,600,000; Full time

Job summary

AIMLEAP is seeking a Backend Developer (Kotlin/JVM) to design scalable, secure services for mobile and web applications. You will own APIs, data models, and service integrations, collaborating with mobile, QA, and DevOps teams.

Key tasks include building RESTful services in Kotlin, modeling data in PostgreSQL, and implementing caching with Redis. The role emphasizes API design, security, CI/CD, and containerized deployments in a hybrid Bangalore setup.

Qualifications

• 4–7 years backend development with Kotlin or Java.
• Experience with Spring Boot or Ktor.
• Kotlin coroutines and non-blocking I/O.
• PostgreSQL including schema design, migrations, and query tuning.
• Redis and a message broker such as RabbitMQ or Kafka.
• API design: versioning, pagination, idempotency, rate limiting.
• Resilient integrations: retries, timeouts, circuit breakers.
• Docker; knowledge of Kubernetes/Helm.
• OAuth2/OpenID Connect and REST API security best practices.
• Proficiency with Git and CI/CD tooling (GitHub Actions or GitLab CI).

Responsibilities

• Design and build RESTful services in Kotlin with API-first OpenAPI.
• Model data and write efficient queries in PostgreSQL.
• Implement caching and asynchronous processing using Redis and queues.
• Integrate third-party APIs and external services cleanly.
• 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 for ease of operation.

Skills

Kotlin

Java

Spring Boot

Ktor

PostgreSQL

Redis

RabbitMQ or Kafka

OAuth2/OpenID Connect

Docker

Kubernetes

Git & CI/CD

OpenAPI

Tools

OpenAPI

Flyway

Liquibase

GitHub Actions

GitLab CI

Docker

Kubernetes

Redis

RabbitMQ

Kafka

Job description

Backend Developer (Kotlin/JVM) | AIMLEAP | Bangalore (Hybrid) | 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 efficient 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 strong 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.
• 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 modern stack.
• Ownership of service design and architecture decisions.
• Hybrid working from Bangalore.

About Us:

AIMLEAP is an ISO 9001:2015 and ISO/IEC 27001:2013 certified global technology consulting and service provider offering Digital IT, AI-augmented Data Solutions, Automation, and Research & Analytics Services.

AIMLEAP has been recognized as ‘The Great Place to Work®’. With focus on AI and automation-first approach, our services include end-to-end IT application management, Mobile App Development, Data Management, Data Mining Services, Web Data Scraping, Self-serving BI reporting solutions, Digital Marketing, and Analytics solutions.

We started in 2012 and successfully delivered projects in IT & digital transformation, automation driven data solutions, and digital marketing for more than 750 fast-growing companies in the USA, Europe, New Zealand, Australia, Canada; and more.

– An ISO 9001:2015 and ISO/IEC 27001:2013 certified
– Served 750+ customers
– 12+ Years of industry experience
– 98% Client Retention
– Great Place to Work® Certified
– Global Delivery Centers in the USA, Canada, India & Australia.