Top Senior Java Developer Jobs in Hartford, CT

Design, build, and optimize deep Windchill Java customizations (services, listeners, processors, TAM types, JSP/HTML UI, background queues, workflows). Lead migrations, performance tuning, upgrade support, documentation, post-go-live support, and mentor junior engineers while adhering to PTC best practices.

Develop Java backend systems and build JavaScript front-end applications (Backbone/Marionette/Handlebars or modern frameworks). Implement responsive HTML5/CSS3 UIs, use NodeJS-based build tools (Grunt/Gulp,SASS,Yeoman,NPM/JSPM), perform requirements elicitation in Agile/global delivery, collaborate with stakeholders, and apply insurance domain knowledge.

Design and implement server-side components and web services, convert wireframes to prototypes, collaborate with UX, analysts and architects, and deliver applications using Agile and iterative SDLC.

Design, develop, test, and deploy Java/J2EE applications and integrations. Lead implementation planning, gather and specify requirements, mentor junior developers, resolve defects, support production (on-call), and ensure database and SOX-compliant process documentation.

The Senior Full Stack Java Developer will design and maintain enterprise applications using Java and modern front-end technologies while collaborating in Agile teams and mentoring junior developers.

Lead migration of legacy COBOL systems to Java-based microservices and develop scalable, secure full-stack solutions on Azure. Build RESTful APIs, optimize performance, ensure DoD cybersecurity compliance, collaborate across teams, document architectures, and participate in Agile ceremonies.

The Front End Java Developer will design, develop, and enhance multi-tier web applications using AngularJS, jQuery, and SQL while meeting business requirements.

Design and develop scalable software solutions, lead architecture discussions, troubleshoot issues, and mentor team members while applying best engineering practices.

Design, build, and maintain scalable Java (11/17) Spring Boot microservices and responsive React front-ends. Implement RESTful APIs, automated tests, CI/CD, cloud deployments, observability, performance tuning, and collaborate in Agile teams to deliver production-grade applications.

The Staff Engineer will leverage over 5 years of experience in Java, JavaScript, and frameworks to develop robust solutions, mentor teammates, and enhance client outcomes while utilizing agile methodologies and cloud development tools.

Seeking a Staff Engineer with 5+ years in Java, focusing on mentoring teammates, solving client challenges, and conducting cloud development.

The role involves owning feature delivery, designing internal APIs, optimizing performance, mentoring junior engineers, and contributing to incident response.

Lead design and delivery of scalable, resilient distributed systems. Act as technical authority across teams, mentor engineers, drive architecture and CI/CD best practices, troubleshoot production issues, optimize performance, and enhance observability while writing production-grade Java.

As a Senior Software Engineer, you will maintain and develop data connectors, enhance data integrations, and improve developer experience within the ClickHouse data ecosystem.

As a Senior Full Stack Engineer, you'll design, build, and support robust platform solutions while integrating front-end components with back-end systems, managing CI/CD pipelines, and automating infrastructure.

The Senior Java Developer will design, develop, and implement custom software solutions in Agile teams, mentor juniors, and ensure product quality.

Optimize and scale blockchain node performance, design and implement core system plugins, collaborate with cross-functional teams, conduct performance testing and debugging, and stay current on blockchain and distributed systems technologies to maintain reliable infrastructure.

Develop and maintain Java backend services for enterprise blockchain applications, integrate APIs with React/Vue frontends, design scalable blockchain solutions, troubleshoot complex backend issues, and collaborate with the team to apply best practices and stay current with blockchain trends.

Design, develop and operate microservice-based components for a derivatives exchange platform. Collaborate with product, security and DevOps teams to build scalable, secure back-end systems with automated testing, CI/CD, and rapid deployment. Participate in code audits, testing, release, and cross-stack problem solving; optimize and implement trading models and products.

The Senior Software Engineer will develop and maintain big data applications, focusing on distributed computing, automation, and collaboration with teams to enhance healthcare solutions.

As a Java Software Engineer III, you will design, develop, and maintain scalable Java-based backend services, mentor other engineers, and influence architectural decisions in an agile environment.

As a Senior Developer, you will modernize COBOL systems to Java, enhancing functionality and performance while collaborating with stakeholders and ensuring coding standards are met.

As a Senior Software Engineer, you will build cloud solutions, define migration strategies, mentor junior engineers, and ensure architectural integrity while collaborating with peers.

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

Design, implement, test, and maintain full‑stack features and services for the Cayuse Research Platform. Drive architecture, prototypes, and technical debt reduction while practicing TDD, expanding automated QA, collaborating cross‑functionally, and ensuring high quality delivery in an Agile environment.