Software Developer (Java - IoT)

optiva; Hyderabad; On-site; INR 3,500,000 - 6,000,000; Full time

Job summary

Optiva is seeking an experienced backend engineer to design, build, and maintain high-throughput Java + Spring Boot microservices serving millions of devices.

You will develop RESTful APIs secured with OAuth 2.0/JWT, work with MongoDB, Kafka, AWS services, and containerize with Docker for deployment on AWS EKS. You will own features end-to-end and contribute to reliability and scale.

Qualifications

• 8+ years of hands-on back-end development experience.
• Proficient in Java (≥8) and Spring (Boot, Data, Security).
• Experience with NoSQL databases (MongoDB) and design for scale.
• Practical AWS experience (EC2, S3, SQS/SNS, Lambda, EKS).
• Familiarity with Docker, Kubernetes, and CI/CD tooling.
• Understanding of RESTful APIs, security (OAuth 2.0, JWT).
• Strong problem-solving, communication, and ability to work independently.

Responsibilities

• Design, build, and maintain high-throughput Java + Spring Boot microservices.
• Develop RESTful APIs secured with OAuth 2.0/JWT.
• Work with MongoDB as primary data store; design schemas and queries.
• Build and consume event-driven architectures using Kafka, AWS SQS/SNS, and Kinesis.
• Containerize services with Docker and deploy on AWS EKS via CI/CD pipelines.
• Collaborate on system design for HA, DR, scalability, and performance.
• Own features end-to-end from design to deployment and monitoring.
• Troubleshoot production issues and drive reliability improvements.

Skills

Java (8+)

Spring ecosystem

NoSQL MongoDB

AWS services

Docker & Kubernetes

RESTful APIs

OAuth 2.0 / JWT

CI/CD tooling

Kafka

WebSockets

SQL databases

React (front-end)

Observability

Shell scripting

OCPP / EV domain

AI coding assistants

Education

BE/B.Tech or ME/M.Tech in Computer Science from top 150 Nirf engineering colleges

Tools

Docker

Kubernetes

Git / GitHub / Bitbucket

CI/CD (Jenkins / GitHub Actions)

MongoDB

AWS

OpenSearch/Elasticsearch

Kafka

React

Job description

It's fun to work in a company where people truly BELIEVE in what they're doing!

We're committed to bringing passion and customer focus to the business.

Job Summary

Key Responsibilities :

• Design, build, and maintain high-throughput Java + Spring Boot microservices serving millions of devices
• Develop RESTful APIs (JSON/XML) secured with JWT and OAuth 2.0
• Work with MongoDB as the primary data store, designing schemas and queries for scale
• Build and consume event-driven architectures using Kafka, AWS SQS/SNS, and Kinesis
• Containerize services with Docker and deploy on AWS EKS (Kubernetes) via CI/CD pipelines
• Collaborate on system design for high availability, disaster recovery, scalability, and performance
• Write clean, testable, well-documented code with strong unit and integration test coverage
• Participate in code reviews, architectural discussions, and sprint planning
• Own features end-to-end - from design and implementation through deployment and production monitoring
• Troubleshoot production issues, perform root-cause analysis, and drive reliability improvements
• Leverage AI-powered development tools for code generation, automated code reviews, test creation, technical planning, and debugging - continuously improving team productivity and code quality

Required skills :

• B.E./B.Tech or ME/M.Tech in Computer Science (or equivalent) from top 150 Nirf engineering colleges.
• 8+ years of hands-on back-end development experience
• Strong proficiency in Java (8+) and the Spring ecosystem (Spring Boot, Spring Data, Spring Security) Solid experience with NoSQL databases (MongoDB preferred) - schema design, indexing, aggregation pipelines
• Practical experience with AWS services (EC2, S3, SQS, SNS, Lambda, EKS, CloudWatch, or similar)
• Familiarity with Docker, Kubernetes, and container orchestration
• Experience with Git, Bitbucket/GitHub, and CI/CD tooling (Jenkins, GitHub Actions, or similar)
• Understanding of RESTful API design principles, versioning, and security (OAuth 2.0, JWT)
• Strong organizational skills - ability to define, track, and deliver work independently
• Excellent problem-solving, critical thinking, and analytical skills
• Clear, concise written and verbal communication
• Experience with event streaming platforms - Kafka, AWS Kinesis
• Working knowledge of AWS Lambda and serverless architectures
• Understanding of WebSockets and persistent connection protocols (e.g., OCPP)
• Knowledge of networking fundamentals - TCP/IP, TLS, load balancing, connection keep-alive, timeout tuning
• Experience with AWS ALB/NLB, target groups, health checks, and sticky sessions
• Exposure to Elasticsearch / OpenSearch for search and analytics workloads
• Familiarity with SQL databases (MySQL/PostgreSQL) as a secondary skill
• Experience with front-end technologies (React, JavaScript/TypeScript) - full-stack capability is a plus
• Knowledge of caching layers (Redis, ElastiCache)
• Understanding of observability - structured logging, distributed tracing, metrics (Datadog, ELK, Prometheus)
• Familiarity with shell scripting (Bash) for automation, debugging, and operational tasks
• Exposure to OCPP (Open Charge Point Protocol) or EV/IoT domain
• Experience using AI coding assistants (GitHub Copilot, Windsurf/Cursor, ChatGPT, Claude) for development, code review, and technical planning
• Experience working in renewable energy, clean tech, or IoT companies
• You thrive in a fast-paced environment with ambiguity and evolving priorities
• You take ownership - proposing solutions, not just implementing tickets