Top Java Developer Jobs in Chicago, IL

Lead and deliver high-quality, secure, scalable Java-based services (Spring Boot/WebFlux); manage two scrum teams, act as hands-on tech lead (50% coding), design systems, improve operational stability, drive automation/CI-CD, evaluate vendor architectures, and lead engineering communities of practice.

Lead and architect production-grade trading systems for Credit Pre-Trade Technology, build AI-native platforms, develop and maintain secure scalable code, partner with trading and product teams, drive AI-assisted engineering practices, support production stability and automation, and lead technical evaluations and communities of practice.

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.

Lead and mentor an agile engineering team to design, build, test, and operate secure, scalable Java microservice applications. Drive adoption and governance of AI-assisted engineering practices, review and deliver high-quality production code, influence product and technical decisions, and promote firmwide SDLC tools and standards.

Develop, deploy, test, and maintain enterprise Java applications using Spring and microservices. Responsibilities include code reviews, performance optimization, architectural design support, project planning, mentoring developers, and collaboration across development teams to deliver quality software on schedule.

Lead an agile team to design, develop, and maintain secure, scalable Java/Spring Boot microservices. Produce high-quality code, drive architecture/vendor evaluations, automate remediation, promote AI-assisted engineering practices, and ensure operational stability and secure SDLC adoption across teams.

Design, build, and deploy secure, high-performance, scalable cloud-native applications supporting Ariba P2P. Work full-stack in Java using Spring Boot and the SAP BTP Cloud Foundry CAP (Java) model, applying resiliency, security, and performance best practices.

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.

Leads architecture and hands-on development of Java and AWS cloud solutions, including microservices, distributed systems, APIs, and AI-enabled applications. Defines technical strategies, engineering standards, and roadmaps; contributes to coding, reviews, troubleshooting, and deployment. Partners with clients and delivery teams, mentors engineers, supports consulting proposals, and drives scalable, secure, resilient solutions using modern DevOps and agile practices.

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.

Design and develop Java microservices, REST APIs, ingestion pipelines, reconciliation workflows, and JasperReports solutions. Write SQL for data validation and reporting, integrate with legacy Datacom/CICS systems, and perform unit, integration, API, batch, and end-to-end testing. Troubleshoot application and data issues, support UAT and defect triage, modernize PACER reporting, and collaborate with stakeholders, vendors, business users, and cross-functional teams.

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.

Develop Java applications using JSP, Struts 2, and MVC. Build or maintain reporting solutions with JasperReports or SSRS, and support applications running on Linux servers with load balancers, JBoss, Apache, and WildFly.

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.

Lead a portfolio of backend engineering projects and a development team to design, build, and operate distributed microservices and cloud-native solutions (Java, Go, Python). Mentor engineers, collaborate with product managers, ensure regulatory-compliant systems, and occasionally code or evaluate implementations.

Senior Full Stack Engineer for Grainger's Home Page and Display Customizations team. Build and maintain reusable React components, design and evolve backend services, improve observability and reliability, modernize legacy systems, and contribute to micro-frontend architecture. Mentor junior engineers, lead team projects, and collaborate with stakeholders to deliver high-quality customer-facing features.

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.

Provides technical leadership and delivery ownership for engineers building scalable AWS cloud-native applications. Leads architecture and solution design across Java, Spring Boot microservices, OpenSearch, CI/CD, observability, and AWS infrastructure. Drives modernization, scalability, security, reliability, DevOps automation, incident resolution, and continuous improvement while mentoring engineers and collaborating with product, architecture, platform, and business stakeholders.

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.

Develops, tests, enhances, and maintains Java backend applications and services for a mission-critical transportation system. Responsibilities include building RESTful APIs, integrations, business logic, database functionality, unit and integration tests, troubleshooting, code reviews, CI/CD participation, secure coding, documentation, and Agile collaboration. The role supports DevSecOps practices, DoD security requirements, system deployments, and occasional front-end integration with Angular.

Develop and maintain Java applications, RESTful services, and Angular frontends using Spring Boot and NgRx. Deploy applications to cloud platforms, practice TDD, manage CI/CD with Jenkins, and work with Oracle and PostgreSQL databases. Participate in agile processes, collaborate with cross-functional teams, mentor engineers, and independently lead technical initiatives and feature delivery.

Develop and maintain scalable Java backend systems using Spring Boot and microservices architecture. Collaborate with customer teams, review specifications, write clean code, participate in code reviews, document solutions, and troubleshoot and optimize backend performance, reliability, and security. The role also contributes technical expertise to training next-generation AI systems, though prior AI experience is not required.