Top Senior Java Developer Jobs in Chicago, IL

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.

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.

Design and develop Java Spring Boot backend microservices for a Master Data Management platform, including data ingestion, validation, match-merge, golden records, workflows, REST APIs, and downstream integrations. Build AWS-based processing and orchestration solutions, implement security controls, optimize performance, write tests, support containerized CI/CD deployments, and contribute to architecture, documentation, code reviews, and Agile delivery.

Join the US Bank Accounts team to design, build, and scale banking products. Own end-to-end projects, implement high-quality APIs and tooling, improve platform robustness, and collaborate across teams to deliver production services that handle large-scale distributed workloads.

Lead technical design, build, and maintain secure, scalable software; drive adoption of AI-assisted engineering, automation, CI/CD, and cloud-native practices; mentor teams, evaluate vendors and SaaS, and translate business strategy into delivery roadmaps.

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.

Lead and contribute to design, develop, test, and maintain secure, scalable Java-based enterprise applications. Drive architecture reviews, apply AI-assisted engineering practices, automate remediation, mentor teams, and promote reuse and operational stability across the SDLC.

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.

Lead an agile engineering team to design, build, and operate secure, scalable full-stack systems. Drive architecture for event-driven microservices, develop Java Spring Boot services and React/TypeScript SPAs, own testing and operational stability, promote AI-assisted engineering practices, and lead technical evaluations and communities of practice.

Design, build, and deploy scalable full-stack applications to replace legacy PIM workflows. Manage and review AI coding agent output, enforce guardrails, implement CI/CD and DevOps best practices, and mentor junior engineers while collaborating with architects and product managers.

Develop and maintain secure, scalable full-stack applications using Java and React. Build RESTful APIs, microservices, responsive interfaces, and cloud-native solutions. Collaborate with UX, cloud, DevOps, and testing teams; support CI/CD, cloud deployments, code reviews, troubleshooting, Agile ceremonies, change management, regression testing, and production releases.

Lead engineering on trading technology: design, develop, and maintain secure, scalable Java/Spring services and data pipelines. Drive adoption of cloud (AWS), CI/CD, AI/ML, analytics, automation, and best practices while mentoring and delivering complex market-facing systems.

Designs, develops, tests, deploys, modernizes, and supports Java enterprise applications and integrations. Troubleshoots applications, APIs, databases, and data pipelines; improves reliability through automation, testing, monitoring, CI/CD, and secure coding. Translates business requirements into maintainable solutions, collaborates with stakeholders and vendors, participates in code reviews and design discussions, and mentors teammates. The hybrid role requires working from the Chicago office at least one day per week.

Seeking a Java Developer with 5+ years of experience in Java development and proficiency in RESTFUL Web Services, JBoss, AngularJS, and MS SQL.

Seeking a Java Developer to create and support enterprise-grade applications. Responsibilities include coding, testing, and documentation while adhering to specifications.

Looking for a Java Lead with 7+ years of experience in Java/J2EE development. Must have strong knowledge in Core Java, Spring Framework, and message systems and ability to solve technical issues.

The Senior Java Web Developer will design, develop, test, and implement web and API-based software solutions while collaborating with a team and managing multiple priorities.

The Senior Java Web Developer will design, develop, and implement web and API-based software solutions, ensuring quality and adherence to standards.

Design and develop web and API-based software solutions, manage multiple priorities, and ensure compliance with best practices. Requires strong collaboration and communication skills.

Design, implement, test, and deliver scalable server-side Java services for a Highly Autonomous Driving map platform. Participate across the Agile lifecycle, work with big-data processing (Hadoop/MapReduce), and deploy to cloud environments using AWS, Docker, and Puppet.

Design, develop, and maintain high-performance, secure Java backend services and APIs. Ensure reliability, scalability, and cost-efficiency across microservices, databases, messaging systems, and capacity planning. Troubleshoot, profile, benchmark, and optimize systems (including ML applications) and collaborate with Kazakhstan stakeholders.

Design, develop, test, and maintain Java backend services, APIs, microservices, and distributed systems supporting enterprise claims and payment solutions. Collaborate with product and business stakeholders, contribute to architecture, build CI/CD pipelines, operate containerized applications, and support production services through monitoring and troubleshooting. Apply clean code, TDD, automated testing, security, and Agile engineering practices while helping guide the platform’s technical direction.

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.