Top Tech Jobs & Startup Jobs in Chicago, IL

Lead frontend development using Angular and NgRx to build scalable, high-performance web applications. Integrate REST and GraphQL, implement testing (Jest/Jasmine/Cypress), drive CI/CD adoption, perform code reviews, mentor junior engineers, and collaborate with UX, backend, and product teams to deliver responsive, accessible interfaces.

Define, design, and implement scalable, secure mobile and web application architectures. Lead technology decisions, mentor engineering teams, conduct architecture and code reviews, drive integrations, CI/CD, and cloud strategies, and enforce security, performance, and best practices across platforms.

Lead design and delivery of microservices-based backend systems, define architecture and standards, mentor engineers, drive cloud-native CI/CD and observability, ensure scalability, resilience, data strategy, and align technical solutions with business goals.

Build and integrate reusable React.js UI components from wireframes, optimize front-end performance and responsiveness, ensure cross-browser compatibility, validate inputs, consume REST APIs, write tests, document code, and collaborate with designers and backend engineers to deliver accessible, secure, and scalable front-end applications.

Bridge business, product, and engineering to define requirements and user stories for API-driven financial platforms. Design digital onboarding, account maintenance, and money-movement workflows, validate integrations and data flows, perform functional testing and edge-case analysis, and ensure solutions meet regulatory, risk, and legal requirements while collaborating with Product, Engineering, and Design teams.

Design, develop, and maintain automated test suites and execute manual testing. Train squads on test management, collaborate to improve test coverage and application health, and troubleshoot data and web service issues to ensure release readiness.

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 design and delivery of Node.js/TypeScript domain-driven microservices and public APIs. Architect greenfield systems, set API standards, own production readiness and incident triage, mentor engineers, and collaborate across teams to ship scalable, observable, and secure customer-facing services.

Own performance testing strategy and execution for large-scale B2B/B2C web platforms. Lead and mentor a performance testing team, translate non-functional requirements into performance goals, design and script tests using k6 and JavaScript, analyze results, and collaborate with architects, developers, and DevOps to resolve bottlenecks while acting as the primary customer performance contact.

Lead end-to-end requirements gathering, translate business goals into functional/non-functional requirements and user stories, analyze processes and data, create dashboards and KPIs, manage stakeholders and Agile delivery, support testing and UAT, and maintain comprehensive documentation to ensure solutions meet business and compliance objectives.