About this Software Developer (Java - IoT) role at Qvantel
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