Top Senior Java Developer Jobs in Boston, MA

Senior Backend Engineer responsible for designing scalable Java Spring microservices, implementing features, resolving defects, and improving backend architecture. The role involves event-driven systems, relational and NoSQL databases, testing, code quality, mentoring engineers, technical leadership, and collaboration with product teams. Engineers will also validate AI-assisted code, promote AI development practices, and work with cloud-native tools across AWS, Docker, Kubernetes, and continuous delivery systems.

Senior individual-contributor backend engineer responsible for designing, building, and operating production-grade, highly available, strongly consistent services for wallet operations, transaction orchestration, blockchain integrations, and event-driven workflows. Implement secure, scalable APIs, cryptographic key management, Kafka-based event systems, observability with OpenTelemetry, CI/CD pipelines, and produce tests, API specs, and operational runbooks.

Develop and maintain scalable enterprise Java applications and Spring-based microservices. Responsibilities include hands-on coding, unit and system testing, debugging, technical documentation, performance optimization, troubleshooting distributed cloud environments, and adherence to software development and security standards. Collaborate with technical leads, architects, and cross-functional Agile teams to design and implement complex global applications.

Maintain and support Java-based healthcare SaaS applications across multiple customer environments. Responsibilities include bug fixes, feature delivery, refactoring, deployments, security remediation, SQL and data migrations, code reviews, configuration improvements, and production support. The role requires a generalist software engineer comfortable with Java, Angular, SQL, REST APIs, enterprise applications, and customer-facing environments.

Develop and maintain scalable Java and Spring Boot backend applications, microservices, and RESTful APIs. Responsibilities include database integration, code reviews, performance optimization, production troubleshooting, testing, CI/CD, cloud deployment, and collaboration with product, QA, and DevOps teams.

Develop and maintain scalable Java and Spring Boot backend applications and REST APIs. Optimize CPU, memory, and overall application performance; identify bottlenecks; resolve production issues; and contribute to architecture, code reviews, reliability, and scalability. The role also involves Node.js or Python FastAPI services, cross-functional collaboration, and potential work with GraphQL, generative AI, cloud platforms, containers, CI/CD, and monitoring tools.

Designs, develops, tests, documents, and operates large-scale distributed software products for Allstate’s Enterprise Payments organization. Responsibilities include building Java and Spring Boot REST APIs, designing microservices, collaborating on system architecture, practicing paired programming and test-driven development, establishing CI/CD pipelines, improving performance, securing APIs, supporting production applications, and contributing to Agile planning, retrospectives, and knowledge sharing.

Build and maintain a high-performance Order Management System supporting systematic investment strategies and millions of annual orders. Collaborate with traders, quantitative researchers, and operations across the full trading lifecycle, including equities, swaps, and futures. Develop Java microservices and web applications using event-driven architecture, support production systems, and improve scalability and robustness. The role requires strong Java, SQL, Linux, distributed systems, and agile engineering skills, with opportunities to work in front-office financial technology.

The Senior Java Developer will design and develop microservices, engage in Agile practices, and collaborate with teams to solve industry challenges using various technologies.

Develop and support J2EE applications, build business functions and web services using object-oriented design, and troubleshoot, fix, and test defects from change control or production activities. The role requires strong Java development skills, familiarity with enterprise frameworks and application servers, Oracle databases, design patterns, and web services. Candidates need six to eight years of Java systems development experience and a bachelor’s degree in computer or information science.

The Sr Java Developer will develop back-end services, focusing on Java REST APIs while also writing SQL scripts and utilizing Linux and shell scripting.

Develop cloud-native applications using Java and JavaScript, create RESTful services, design databases, and troubleshoot performance issues.

Seeking a Full Stack Java Developer with 6-10 years experience in cloud-native development, RESTful services, and agile team collaboration.

The Java Developer will work on integration projects utilizing Camel or iWay ESB, focusing on web services and interacting with clients in a healthcare environment.

The role involves migrating existing applications to the cloud using Core Java and Postgres, while also prototyping the migration process.

Investigate and resolve data-quality issues in large-scale distributed systems. Design Java-based repair pipelines and idempotent correction jobs for high-volume datasets, debug existing code, use AWS services for queue-driven and batch workflows, optimize performance and concurrency, and communicate technical findings and risks to stakeholders.

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.

Designs, implements, and runs Java Spring Boot microservices and REST APIs; leads design, CI/CD, TDD, performance tuning, security, and cross-product collaboration. Coaches teams and owns product KPIs and production support.

Develop and deliver enterprise software for centralized management of hyper-converged datacenter products. Collaborate with architects, product management, QA, and system test in an Agile/Scrum environment. Implement Java and Python components, REST APIs, and integrate with VMware and datacenter automation tools.

Seeking a senior Java developer with 5+ years building J2EE/web applications, distributed and real-time systems. Responsibilities include OOA/OOD, implementing core business logic, APIs and frameworks, web UIs (AngularJS/jQuery/HTML5/Swing/JavaFX), application frameworks (Spring/Hibernate/JSF/Struts), SOA/Web Services integration, working on Unix/Linux/Windows, and using build/deploy/test automation tools (Ant/Maven/Jenkins/Chef/JUnit/Selenium). Preferred: Cassandra, RabbitMQ, Pivotal Cloud Foundry, Spring Boot.

Senior Java developer responsible for designing, developing, testing and maintaining Java/J2EE web applications using Spring, Hibernate, JMS and frontend frameworks (Angular/Bootstrap). Participate in SDLC activities, Agile/Scrum rituals, database design and query optimization, CI/build scripts, and use enterprise app servers and tools for deployment and testing.

Develop and maintain ATG/Java J2EE applications and services. Implement XML/HTTP and RESTful APIs, front-end components (jQuery/AngularJS), and backend frameworks (Struts, Spring, Hibernate). Work with WebLogic, Oracle DB, JDBC/PLSQL, AWS, microservices, and RabbitMQ. Participate in full SDLC, collaborate with stakeholders, troubleshoot complex issues, and support iOS/Swift development as needed.

Design, develop, and maintain web-based UI and REST middleware for federal health IT systems. Participate in Agile/SAFe ceremonies, write design documents, implement features, resolve bugs, and support CI/CD pipelines while collaborating with product, QA, and stakeholders.

Lead backend architecture and implementation for Java Spring microservices, validate and own AI-assisted code, mentor engineers, collaborate with product to deliver features, and drive technical excellence and scalable, test-covered systems.

Senior front-end developer building complex, interactive web applications using advanced JavaScript, HTML5, and CSS3. Collaborate with UX, product, and backend (Ruby/Java) teams to design reusable components, enforce client-side business logic, write unit tests, and improve product and processes in an Agile environment.