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. We're 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

  : 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.