Top Senior Java Developer Jobs

Lead the design, development, testing, deployment, and operation of secure full-stack applications using frontend and backend technologies. Build scalable APIs and accessible user experiences, improve resiliency and performance, troubleshoot production issues, and guide code quality and architecture. Drive CI/CD, automation, observability, secure development, AI-assisted engineering practices, and technical initiatives across agile, cross-functional teams.

Leads the architecture, development, deployment, and maintenance of enterprise-grade full-stack applications and distributed systems. Builds Java and Spring Boot backends, React frontends, REST APIs, microservices, cloud-native services, and relational database solutions. Collaborates with product, architecture, DevOps, and engineering teams in an Agile environment while ensuring application security, performance, observability, and operational reliability.

Develop secure Java and Spring Boot backend services, build responsive JavaScript frontends, optimize SQL and NoSQL databases, deploy cloud applications, containerize services, maintain CI/CD pipelines, and write tested, maintainable code. Collaborate with product teams to turn wireframes into functional applications.

Designs, develops, tests, maintains, and documents complex Java software for distributed ground-support applications controlling space vehicles. Translates customer requirements into software designs, develops system integrations, troubleshoots technical issues, improves software processes and metrics, and collaborates with system and test engineers in Agile environments. The role also advises on software domains, regulations, tools, and emerging technologies.

Design, develop, and maintain scalable, cloud-native Java/J2EE services and APIs for equity investments. Collaborate with business and engineering teams to document requirements, implement multi-threaded solutions, create tests, perform code reviews, mentor junior engineers, and apply CI/CD and agile practices to deliver high-quality financial software.

Develop and support full-stack web applications using Java, Spring Boot, Angular, REST APIs, microservices, SQL Server, Elasticsearch, and Kafka. Build responsive user interfaces, scalable backend services, micro frontends, and event-driven integrations. Contribute to API design, CI/CD pipelines, automated testing, code reviews, observability, and production support while collaborating in an agile engineering team.

Design, develop, implement, test and enhance web-based Java/J2EE applications and application tools/services using Spring/Hibernate and SOA/XML to ensure interoperability with other systems.

Develop and maintain web-based business applications across the full software development lifecycle, including requirements gathering, design, coding, testing, documentation, and database development. The role requires full-stack Java expertise with Spring Boot, REST APIs, Vue.js, front-end technologies, application servers, databases, and Unix/Linux. The developer will coordinate multiple priorities, create technical documentation, collaborate independently or within teams, and communicate fluently in English and Korean.

Develop, maintain, enhance, test, integrate, and troubleshoot scalable Java applications using Spring technologies. Work with Linux, scripting, SQL and NoSQL databases, containers, Kubernetes, Helm, messaging systems, CI/CD, infrastructure automation, and Git. Collaborate cross-functionally to ensure reliability, performance, security, and integration across complex mission-focused environments.

Design, develop, test, maintain, and improve front-end and back-end software systems. Troubleshoot complex technical issues, contribute to scalable solutions, communicate with stakeholders, create technical documentation, mentor engineers, participate in hiring, and lead small technical projects and initiatives.

Leads development of secure, scalable payment applications using Java, Spring Boot, microservices, AWS, Terraform, and CloudFormation. Designs, codes, tests, debugs, and reviews production software; improves resiliency, automation, and operational stability. Drives responsible adoption of AI-assisted engineering tools, evaluates technical solutions with vendors and internal teams, and mentors software engineers within an agile environment.

Build and operate a new full-stack fleet payments and expense management platform. Responsibilities include architecture, backend services, APIs, web and mobile capabilities, payment workflows, partner integrations, testing, observability, security, production readiness, and continuous improvement. The role collaborates with product, design, security, and distributed engineering teams while mentoring engineers and establishing scalable development 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.

Develop and maintain scalable financial applications supporting back-office, post-trade, statements, and regulatory reporting systems. Responsibilities include software design, coding, refactoring, testing AI-assisted code, code reviews, production rollouts, cross-team collaboration, and proactive issue resolution. The role requires strong Java and Spring expertise, database experience, familiarity with financial markets, and the ability to manage full software development lifecycles.

Develop and customize PTC Windchill using Java, PTC APIs, and customization frameworks. Responsibilities include extending platform behavior, working with data models, workflows, JSP, HTML, TAM, SQL, upgrades, troubleshooting, performance engineering, code and design reviews, and mentoring junior engineers. The role collaborates with cross-functional stakeholders to deliver upgrade-friendly, production-ready solutions and may involve ThingWorx, RV&S, CI/CD, and cloud-based Windchill environments.

Hands-on senior engineer responsible for designing, building, and operating a multi-threaded, Linux-based, real-time Java platform for Equity Swaps. Drive architecture, mentor engineers, own core components (including cashflow calculator), operate and tune sharded MongoDB, improve CI/CD and test automation, lead L3 support, and use AI tooling to accelerate the SDLC.

Leads development of secure, scalable Java backend services for wealth management. Designs, builds, tests, reviews, debugs, deploys, and operates production software using Spring Boot, microservices, messaging, databases, Kubernetes, Redis, and AWS. Drives automation, operational stability, monitoring, documentation, and secure AI-assisted engineering practices. Evaluates vendor and architectural solutions while independently resolving complex technical problems and coaching engineering teams on responsible AI usage.

Develop, modernize, refactor, test, integrate, and deploy mission-critical Java applications in classified DoD environments. Responsibilities include analyzing legacy codebases, building REST and gRPC services, integrating Oracle databases and enterprise messaging systems, creating Docker containers, supporting Kubernetes deployments, and owning technical deliverables through demonstrations. The role requires troubleshooting, documentation, runtime configuration, logging, and health monitoring for enterprise software systems.

Architect and develop scalable, resilient, secure cloud-native services for Omnissa’s Horizon Cloud VDI/DaaS platform. Lead complex cross-team features, define subsystem technical vision, establish engineering standards, mentor developers, guide distributed teams, and partner with product management on technical roadmaps. The role uses Java, Python, JavaScript, microservices, Spring Boot, Kubernetes, Azure, and AWS while addressing performance, security, operability, and customer issues.

Develop and maintain scalable Java back-end applications, services, and APIs. Design database schemas, write and optimize Oracle SQL, build REST and SOAP integrations, and use Spring, Maven, Git, Jenkins, and testing frameworks. Collaborate with cross-functional teams, translate requirements into technical solutions, troubleshoot issues, and ensure reliable, well-documented code in an agile environment.

Develop and maintain secure enterprise Java applications using Java 17+, REST APIs, JSP, Jakarta Servlets, LDAP, PKI, and Linux. Deploy and tune applications on Apache Tomcat and HTTPD, build front-end interfaces, manage MariaDB/MySQL persistence through JDBC and DAO patterns, and support cryptographic certificate workflows. The role requires active TS/SCI with full-scope polygraph and full-time onsite work in Dulles, Virginia.

Designs, develops, tests, secures, debugs, and supports enterprise applications using Java and modern technologies. Translates customer requirements into software solutions, participates in code reviews, coordinates cross-team dependencies, documents systems, resolves defects, and mentors junior engineers. The role also applies AI-assisted tools to improve development productivity and quality within an Agile environment.

Designs, develops, deploys, and maintains enterprise-grade web applications and distributed systems. Responsibilities include translating business requirements into technical designs, writing production-quality Java and React code, building microservices and REST APIs, working with relational databases, managing CI/CD workflows, deploying cloud-native services, and supporting applications throughout their operational lifecycle. The role may also involve event-driven architectures, Docker, Kubernetes, automated testing, and distributed systems design.

Develop and maintain scalable customer-facing full-stack applications using Java, Spring Boot, Angular, REST APIs, and cloud technologies. Design software, automate testing, deploy applications, and support CI/CD pipelines. Collaborate with architecture, UX, and product teams in an Agile environment. Mentor junior engineers, conduct code reviews, improve development practices, and translate business requirements into technical solutions.

Design, develop, test, deploy, and support scalable cloud-native applications using Java, Spring Boot, React, TypeScript, Node.js, PostgreSQL, and microservices. Build REST APIs, integrations, CI/CD pipelines, containerized deployments, and observable production systems. Collaborate with Product, UX, QA, DevOps, Architecture, and engineering teams while troubleshooting issues and improving application performance, resilience, and maintainability.