Staff Java Developer
We are looking for a Staff Java Engineer to join a platform team working on high-performance Java infrastructure and networking solutions for a leading global technology company.
The team develops and maintains Java-based tooling centered around ServiceTalk, an open-source networking library built on top of Netty. A key focus of the project is scaling development of adapter layers that bridge legacy systems using Apache HttpClient APIs with the newer ServiceTalk-based architecture.
This role involves working on platform-level engineering challenges, improving maintainability of existing systems, refactoring legacy components, and building new APIs and services that support large-scale internal adoption.
Essential functions
- Support, maintain, and refactor existing Java platform components
- Design and develop new backend services and APIs
- Contribute to scaling and improving ServiceTalk adapter development
- Work with legacy integrations and modernize existing architecture
- Ensure backward compatibility and smooth migration strategies across releases
- Write clean, maintainable, and well-documented production code
- Participate in architecture discussions, code reviews, and technical decision-making
- Develop unit and integration tests to ensure reliability and stability
- Collaborate directly with the client’s engineering team during regular sync calls
Qualifications
- Upper-Intermediate+ English (spoken and written)
- Regular overlap with the client team, including calls up to 9:00 PM Kyiv time
- Strong commercial experience with Java
- Deep expertise in core Java, concurrency, and JVM ecosystem
- Strong understanding of algorithms and data structures
- including practical knowledge of collections internals, graphs, trees, etc.
- Solid understanding of software design patterns
- e.g. Chain of Responsibility, Command, and similar
- Strong experience with multithreading and concurrency
- synchronization, locking, thread lifecycle management
- Solid understanding of software release management
- semantic versioning
- deprecation strategies
- backward compatibility maintenance
- Strong experience with Maven and Gradle
- dependency management
- build configuration
- conflict resolution
- Experience with gRPC
- Strong coding standards, clean code practices, testing mindset
- Experience with unit and integration testing
- Ability to work in a collaborative engineering environment
Would be a plus
- Experience with Neo4j or other graph databases
- Experience with MapStruct
- Knowledge of Artifactory or similar artifact repositories
- Experience building systems with custom pagination and batching
- Understanding of metadata indexing and enrichment pipelines
- Experience with parsing technical artifacts (POM, JAR, manifests, metadata files)
- Knowledge of SBOMs, software licenses, and compliance standards
- Experience with license parsing and release note indexing
- Understanding of repository analysis tooling
- Experience with UUID-based identity generation strategies
- Familiarity with workflow engines and asynchronous orchestration
- Experience building modular backend platforms
- Experience maintaining custom versioning/diff tooling
- Strong JavaDocs/documentation practices
We offer
- Opportunity to work on bleeding-edge projects
- Work with a highly motivated and dedicated team
- Competitive salary
- Flexible schedule
- Benefits package - medical insurance, sports
- Corporate social events
- Professional development opportunities
- Well-equipped office
About us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.
