Top Java Developer Jobs in Boston, MA

Design and implement advanced Java customizations for PTC Windchill (services, listeners, processors, TAM types, JSP/HTML extensions). Optimize performance, support upgrades and post-go-live incidents, lead migration from legacy customizations, produce technical documentation, and mentor junior engineers while collaborating with product and operations stakeholders.

Lead and mentor a team building distributed, cloud-based full‑stack systems and microservices for risk management. Collaborate with product managers to design, implement, and deploy scalable solutions using modern languages, containers, and cloud services while driving technical excellence and adoption of AI-enabled tooling.

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 concurrency, data structures, software design principles, testing with JUnit, and database interaction using JDBC. Familiarity with microservices, messaging patterns, and algorithmic skills is desired. Experience with build tools and Linux is a plus.

Join an elite engineering team to develop massive data processing systems using Core Java and AWS, focusing on Big Data and performance optimization.

USM Business Systems seeks a Java Developer with significant experience in P&C claims and DCT claims. The role involves project-driven tasks and requires strong industry knowledge.

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.

Looking for a Core Java Developer with expertise in multi-threading and real-time processing. Must focus only on core Java, not J2EE.

The Core Java Developer will work on multi-threading and real-time processing applications, focusing on core Java, not J2EE.

Early-career backend engineer contributing to Java-based services and APIs. Design, implement, test, and deploy production-quality code, participate in code reviews, collaborate with product and senior engineers, and use AI-assisted development tools to accelerate delivery and maintainable systems.

Maintain and improve Advisor360°'s SaaS platform by diagnosing complex issues, optimizing performance and availability, designing serviceability tooling, and collaborating with Engineering, QA, DevOps, and Infrastructure. Mentor teammates, ensure coding standards, participate in on-call rotations, and support global infrastructure deployment and scalability.

The Java Developer will enhance data utilization for a large state-run project, involving data aggregation, web application development, and collaboration with other teams.

Develop and maintain high-performance Java applications, work on web and mobile applications, and collaborate in Agile/Scrum teams.

Lead a team of developers to design, architect, and deliver scalable, secure microservices-based enterprise applications. Hands-on coding, code reviews, performance tuning, CI/CD, cloud deployments, stakeholder collaboration, and mentoring. Drive architecture, HLD/LLD, root-cause analysis, and timely delivery in Agile environments.

Design, develop, test, deploy, and maintain enterprise Java applications for USPS. Build RESTful APIs with Spring, translate requirements into architecture, implement CI/CD/DevSecOps, integrate relational databases, troubleshoot complex issues, and collaborate with cross-functional Agile teams to deliver high-quality software solutions.

Design, develop, test, and deploy full-stack Java applications (backend Java/Spring Boot, frontend React/Angular, PostgreSQL). Lead architecture decisions, mentor developers, perform code reviews, troubleshoot issues, implement testing strategies (JUnit, Cypress, Playwright), collaborate with product/QA/DevOps in Agile, and support VA mission-critical initiatives while meeting security and clearance requirements.

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.

Lead design, development, testing, and maintenance of enterprise Java microservices and front-end applications. Build APIs, CI/CD pipelines, and containerized deployments; troubleshoot production, ensure security/compliance, mentor junior developers, and collaborate within Agile teams.

Senior back-end Java developer responsible for designing, developing, testing, deploying, and maintaining scalable web platform services. Responsibilities include RESTful API design, migrating legacy systems, mentoring team members, evaluating new technologies, and collaborating with product management.

Build and deliver backend enterprise web applications for Citi's Integrated Digital Assets Platform using Java/Spring and web3 technologies. Collaborate with distributed teams, follow best practices and design patterns, write technical documentation, resolve issues, and ensure scalability, reliability, and performance.

Reverse-engineer TIBCO BW/MFT processes to extract business logic, then design and implement a modular Java/Spring Boot microservices replacement. Migrate protocols to Kafka/RabbitMQ/REST, translate XML transformations, ensure data persistence and consistency, and validate performance to meet existing SLAs.

Design, build, and maintain server-side Java applications and RESTful APIs. Optimize performance and scalability, ensure security, collaborate with cross-functional teams, perform code reviews, troubleshoot production issues, and document system architecture.

Analyze legacy TIBCO BusinessWorks/MFT processes to extract business logic, design and build a decoupled Java/Spring Boot microservices platform, migrate protocols to Kafka/RabbitMQ/REST, translate XML-heavy transformations to modern formats, and validate performance and SLAs to match legacy throughput.