Senior Back-End Developer (Java Spring Boot + PostgreSQL)

Onified.ai is building an intelligent, multi-tenant SaaS business suite for manufacturing enterprisescovering processes from marketing to order execution, supply chain, and operations. Were building modern microservices on AWS with a strong focus on scalability, performance, and clean engineering practices.

• 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 (12 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.

• 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.

• 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 : Youll 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.