Top Senior Java Developer Jobs

Design, develop, and maintain Java-based backend services using Spring/Spring Boot. Build RESTful APIs, write automated tests, use Git/Git Flow, Docker/Kubernetes, Kafka and SQL. Follow modern DevOps practices and collaborate cross-functionally to support payment/FinTech solutions.

Lead and mentor a team of Java/J2EE developers to enhance and maintain Internet/Intranet business applications. Provide design and implementation leadership using WebSphere and JBoss, refine Java/J2EE standards and testing, implement integrations and packaged solutions, and collaborate with technical staff and business stakeholders to gather requirements and resolve issues.

Lead design and development of low-latency, high-performance Java microservices for electronic equities trading. Implement complex trading logic, optimize performance, conduct design reviews, partner with product and quant teams, improve testing and CI/CD pipelines, and maintain monitoring, reconciliation, and recovery capabilities while ensuring regulatory and operational risk controls.

Develop and maintain the Java client library and high-performance C/C++ server applications. Implement message parsers and feed handlers, optimize for extreme throughput and low latency, build tools for petabyte-scale processing, collaborate on build/deploy/CI practices, monitor uptime, and support smooth feature rollouts.

Develop and maintain core Elasticsearch infrastructure and shared platform features. Design scalable APIs, solve performance and concurrency issues, improve observability and CI/CD, automate developer workflows, lead cross-team projects, support complex operational investigations, and use AI to accelerate development and debugging.

Design, build, and improve Elasticsearch distributed-systems components for scalable, concurrent, and consistent indexing. Maintain cluster coordination for performance and resilience, push system scale limits, investigate performance and concurrency issues, support operations/support engineers, and lead projects involving multiple engineers from design through delivery.

The role involves improving Elasticsearch's distributed components, maintaining cluster coordination systems, and addressing complex issues to optimize performance and scalability.

Lead design and development of enterprise software solutions using Java and Cursor AI. Provide technical leadership, mentor engineers, define architecture and roadmaps, implement cloud-native, microservices, CI/CD and infrastructure-as-code practices, and collaborate across product and engineering teams to deliver performant, secure systems.

Lead design and delivery of custom cloud-based software solutions. Implement and mentor teams on Java web services and Spring Boot applications, leverage cloud platforms (AWS/GCP/Azure), ontology and semantic search, NoSQL/graph databases (MongoDB/Neo4J), ORM (Hibernate), build and CI tools (Maven, Jenkins/TeamCity), and TDD/BDD practices.

Lead design and delivery of custom cloud-native Java applications and services. Provide technical leadership, build indexed searchable interfaces for media assets, implement containerized solutions, and apply CI/CD, TDD/BDD, and cloud infrastructure automation practices to meet client requirements.

Design, build, and maintain low-latency, high-availability Java backend services and REST APIs. Troubleshoot production issues, contribute to distributed microservice architectures, and participate in on-call rotations while working with Bots & Automation to build a bot runtime platform.

Design and develop cloud-native RESTful and event-driven microservices using Java 17+ and Spring Boot. Build real-time integrations with devices/APIs, use Kafka/RabbitMQ for event streaming, containerize with Docker and Kubernetes, deploy on cloud platforms (AWS/Azure/GCP), work with PostgreSQL/MongoDB/Redis, implement OAuth2/JWT security, and contribute to architecture, CI/CD, and IoT connected services.

Design, develop, and maintain Java/Spring-based microservices and web applications; write clean, tested code; collaborate with architects and teams to resolve defects; deploy scalable containerized solutions on Kubernetes/Docker; integrate with messaging systems and tune Oracle/SQL performance; participate in CI/CD and DevOps practices.

Design, build, and optimize a multi-region, highly-available Java/Scala microservices data pipeline processing thousands of messages/sec. Improve performance, implement fraud-detection pipelines with ML (Kafka/Kafka Streams), deploy to multi-cloud Kubernetes, and push frequent production releases to maintain five-nines uptime.

Lead design, develop, and maintain enterprise-grade Java full-stack web applications and distributed microservices. Translate requirements into technical designs, write production-quality code, deploy cloud-native services, ensure observability, and collaborate with product, architecture, and DevOps teams in an Agile environment.

Lead technical design, development, testing, and incident response for scalable web applications. Provide technical leadership, mentor engineers, partner with cross-functional teams, translate requirements into maintainable designs, identify risks, and drive continuous improvement across platform architecture and operations.

Senior backend-focused engineer responsible for designing, building, and supporting high-scale Java/Spring Boot microservices, driving CI/CD and DevOps practices, mentoring teammates, implementing automated tests, troubleshooting performance issues, and contributing to pipeline automation and continuous improvement.

Lead architecture and implementation of device provisioning and lifecycle management services on GCP. Own APIs, scale Postgres/AlloyDB databases, integrate AI/LLM workflows (Anthropic Claude) for automation, mentor engineers, improve pipelines and tooling, and ensure high-availability, fault-tolerant designs.

Design, build, and maintain enterprise-grade full-stack financial applications. Develop front-end and back-end components, APIs, automated tests, and reusable UI components. Collaborate with product, UX, and cross-functional teams, optimize performance and scalability, support production releases, and mentor junior engineers.

The role involves developing and enhancing a margin calculation platform, resolving complex problems, and mentoring developers. Emphasis on collaboration and delivering robust software solutions within finance operations.

Design, build, test, and operate Java-based microservices for Enterprise Payments. Participate in Agile ceremonies, practice TDD and pair programming, implement CI/CD pipelines, ensure observability and production support, and follow clean-code and DevOps best practices to deliver reliable, scalable payment solutions.

This role involves designing and implementing scalable Java applications for margin calculations in finance, leading problem resolution, and mentoring developers.

Maintain and enhance backend order management and next‑gen trading platform components. Design, develop, optimize and test scalable low‑latency Java services, collaborate with product, architects and cross‑functional teams, ensure alignment with business goals, and mentor peers while following engineering best practices.

Build and maintain backend microservices and REST APIs in Java and Node.js. Develop cloud-native, containerized services on AWS/Kubernetes, use IaC and CI/CD, troubleshoot distributed systems, integrate SQL/NoSQL databases, participate in code reviews and sprint planning, and own production incident resolution and stakeholder communication.

The Sr Software Developer will design, develop, and mentor direct reports in software for the real estate industry, solving complex problems and ensuring product functionality and performance.