Top Tech Jobs & Startup Jobs in Chicago, IL

Design, build, and maintain scalable backend services using Java (Spring) and Python (FastAPI/Django). Implement REST/GraphQL APIs, manage SQL and NoSQL databases, develop microservices, ensure security (OAuth2/JWT), write tests (JUnit/pytest), optimize performance, and collaborate with frontend and DevOps teams in Agile.

Build and maintain high-performance iOS mobile applications using React Native. Collaborate with designers, product, and backend teams to implement features, integrate RESTful APIs, optimize performance, debug issues, write clean code, participate in code reviews, and keep up with mobile development best practices.

Principal Automation Engineer driving QE modernization for data and API initiatives. Design, build, and maintain automation frameworks for APIs, data pipelines, and reporting; implement data validation strategies; perform performance testing; integrate tests into CI/CD; coach squads on QE best practices; produce quality metrics and dashboards.

Lead design and implementation of Camunda-based business process automations. Collaborate with product and service teams, provide technical leadership and mentoring, ensure CI/CD and DevOps practices, participate in code reviews, and drive scalable solutions using Java, APIs, SQL/PLSQL, and cloud environments.

Lead design and delivery of enterprise Pega BPM/case management solutions. Architect and develop on Pega Infinity (24.x+), Constellation/Cosmos and Pega 8.x upgrades, integrate with RDBMS/Oracle, DX APIs and Pega Cloud/AWS, and support deployment, decisioning, and stakeholder-facing delivery in financial services.

Develop and maintain high-performance Android mobile apps using React Native. Collaborate with designers and backend engineers, integrate RESTful APIs, implement state management, optimize performance, debug issues, participate in code reviews, and follow best practices for testing, CI/CD, and app deployment to the Google Play Store.

Lead design strategy and discovery for a retail modernization initiative, defining visual and interaction language for quoting, search, inventory, and payments. Create a modular design system bridging modern aesthetics with API-driven architectures and legacy data. Ensure device-agnostic UX across mobile, tablet, and POS, align design with technical constraints, drive accessibility/usability standards, and communicate a long-term platform vision for multi-vertical expansion.

Lead and execute end-to-end UI/UX for web and mobile, define design vision and systems, mentor designers, drive UX research and usability testing, ensure accessibility and design-to-dev handoff, and collaborate with product, engineering, and business stakeholders to deliver scalable, user-centered experiences.

Lead delivery of a modern POS platform across UI, BFF, and backend microservices. Own product backlog, translate capabilities into user stories, define MVP scope and priorities, plan roadmaps, and support multi-squad delivery while partnering with architecture, store operations, and business stakeholders.

Design, develop, and deploy machine learning and deep learning models; build end-to-end ML pipelines including preprocessing, training, evaluation, and deployment; perform feature engineering on large datasets; deploy and monitor models on cloud platforms; collaborate with cross-functional teams to integrate AI solutions and retrain models as needed.