Senior Java Developer

Full time Erbil

Key Responsibilities:

Read and understand existing service code, then enhance and optimize it in Java/Spring Boot.
Design data models and database migration scripts that move production data safely with zero loss.
Write production-ready REST APIs following agreed standards (OpenAPI specifications, proper HTTP semantics, standardized error responses).
Write unit and integration tests — testing is part of the job, not an afterthought.
Review code from junior and mid-level developers.
Participate in technical discussions and contribute to architecture decisions.
Work with the QA Engineer to validate that developed services are functionally equivalent to intended design.
Contribute to technical documentation so that knowledge is not locked inside any one person's head.

Requirements - Technical (must-have):

4–6 years of professional Java development experience.
Java 17: streams, generics, exception handling, concurrency basics.
Spring Boot: REST APIs, dependency injection, configuration, testing.
Spring Security: securing REST APIs, understanding of authentication and authorization flows.
JPA / Hibernate: entity mapping, relationships, query optimization, transaction management.
MySQL: query writing, understanding of indexes, ability to write and review migration scripts.
Redis: caching patterns, session management, basic data structures.
MongoDB: basic document operations via Spring Data MongoDB.
Git: professional workflow — branching, pull requests, code review, conflict resolution.
Writing tests: JUnit, Mockito — you write tests without needing to be asked.

General (must-have):

Ability to read PHP or any other language at a basic level.
Strong communication: can explain technical decisions clearly to teammates.
Takes ownership of their work through to production, not just to "code complete".

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