Senior/Lead Java Developer

The project is part of a platform team focused on developing and maintaining Java-based tools. One of the core components is an open-source networking library called ServiceTalk, built on top of Netty. The goal is to modernize existing infrastructure by creating adapters that bridge legacy Apache HTTP Clients with ServiceTalk APIs. The team is currently expanding development of these adapters to improve performance, scalability, and integration with other internal systems.ResponsibilitiesDesign, develop, and maintain scalable Java-based tools and libraries.Build and enhance ServiceTalk adapters that integrate with legacy Apache HTTP Clients.Ensure performance, backward compatibility, and code quality across the release lifecycle.Collaborate on architecture design, code reviews, and continuous improvement of the development process.Contribute to semantic versioning, release management, and dependency optimization.Work with distributed teams and maintain overlap with PT time zone up to 11 AM PT.RequirementsExpert-level proficiency in Java, including core language features, concurrency, and the JVM ecosystem.Deep understanding of algorithms and data structures (e.g., implementing graphs, trees, collections).Strong knowledge of design patterns such as Chain of Responsibility, Command, etc.Proven experience with concurrency, synchronization, and thread management.Solid understanding of the application release process — semantic versioning, deprecations, backward compatibility.Hands-on experience with Maven and Gradle, including dependency conflict resolution.Experience with gRPC 1.11 or later.Ability to work collaboratively in a distributed environment and communicate effectively.Nice to haveExperience with graph databases (e.g., Neo4j).Proficiency in object mapping using MapStruct.Knowledge of artifact repositories such as Artifactory.Experience building systems with custom pagination and batch processing.Familiarity with license parsing, release note indexing, and repository analysis.Understanding of UUID-based identity generation and entity relationships.Background in workflow engines and asynchronous process orchestration.Experience developing modular metadata indexing pipelines.Strong understanding of metadata enrichment, file parsing (POM, JAR, etc.).Commitment to clean code, comprehensive JavaDocs, and robust unit/integration testing.Awareness of SBOMs, open-source license types (MIT, Apache, etc.), and software compliance.Experience maintaining custom versioning libraries, such as those based on JapiCmp diff algorithms.We offerOpportunity to work on bleeding-edge projectsWork with a highly motivated and dedicated teamCompetitive salaryFlexible scheduleBenefits package - medical insurance, sportsCorporate social eventsProfessional development opportunitiesWell-equipped officeAbout UsGrid 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.