Senior Backend Developer

About the job

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. 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: 2+ 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. Good to have (nice if you’ve done some of these): 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).

Requirements

• Java
• Spring Boot
• Microservices
• PostgreSQL
• REST APIs

Preferred Technologies

• Java
• Spring Boot
• Microservices
• PostgreSQL
• REST APIs

About the company

Onified.Ai is building an intelligent, multi-tenant SaaS business suite for manufacturing enterprises covering processes from marketing to order execution and supply chain. They emphasize scalability, performance, and clean engineering practices.