Senior Back-End Developer (Java Spring Boot + PostgreSQL)Technum Opus Private Limited • Haryana, India
Senior Back-End Developer (Java Spring Boot + PostgreSQL)
Technum Opus Private Limited • Haryana, India
2 days ago
Job description2+ years of backend experience with Java + Spring Boot . Strong fundamentals of microservices (communication patterns, failure handling, service design). Strong PostgreSQL knowledge : schema design, indexing, query optimization, transactions. Strong REST API design experience (auth, pagination, filtering, rate limits, validation). Clear understanding of clean code, testing, and production-grade engineering. Spring Cloud patterns, API Gateway, service discovery, config management. Async / event-driven systems : Kafka / RabbitMQ (or similar). Redis caching, distributed locks, rate limiting. Docker + basic Kubernetes understanding. Observability : structured logs, metrics, tracing (OpenTelemetry / Grafana / etc.). Security : JWT / OAuth2, RBAC / ABAC concepts, audit logs. AWS experience (EKS / ECS, RDS, S3, IAM, CloudWatch). Mentorship + leadership : You’ll be the experienced backbone guiding a young team. Build from scratch : Real architecture ownership and long-term product impact. Strong engineering culture : focus on best practices, performance, and scalable design. Manufacturing-scale problems : complex workflows, high-volume operations, multi-plant contexts.
About Onified.ai
Onified.ai is building an intelligent, multi-tenant SaaS business suite for manufacturing enterprises—covering processes from marketing to order execution, supply chain, and operations. We’re building modern microservices on AWS with a strong focus on scalability, performance, and clean engineering practices.What you’ll do
- Design, build, and own backend microservices using Java + Spring Boot .
- Define clean service boundaries , APIs, and data contracts for a scalable microservices architecture.
- Build and maintain REST APIs (versioning, validation, error handling, docs).
- Design and optimize PostgreSQL schemas (indexes, constraints, migrations, performance tuning).
- Set up and enforce backend best practices : coding standards, reviews, testing discipline, release hygiene.
- Mentor a young team (1–2 years exp) —guide them on architecture, debugging, performance, and quality.
- Implement multi-tenant SaaS patterns (tenant isolation, security, auditability).
- Identify bottlenecks and improve latency, throughput, and reliability (profiling, caching, DB tuning).
- Collaborate closely with frontend, DevOps, and product to deliver end-to-end features.
Must-have skills
Good to have (nice if you’ve done some of these)
Why join us
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Java Developer Spring Boot • Haryana, India
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