Top Tech Jobs & Startup Jobs in Chicago, IL

Design, build, and maintain operational and analytical data platform capabilities using Java Spring Batch, Python, AWS, Oracle, and Snowflake. Deliver end-to-end development, production rollout, and support; improve financial product data quality, modeling, and SQL performance; collaborate with business partners and squads.

Design, develop, test, and deploy secure smart contracts and DApps on platforms like Ethereum and Solana. Manage digital asset lifecycle (issuance, settlement, custody), integrate blockchain components with front-end/back-end using Web3 libraries, perform security audits, and optimize performance and scalability.

Design and lead enterprise WordPress architectures (multisite, themes, plugins) on WP VIP. Ensure performance, caching, security, integrations (REST/GraphQL), DevOps pipelines, monitoring, documentation, and mentor development teams.

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.

Design, architect, and build enterprise Java microservices and APIs; lead technical delivery, mentor engineers, implement cloud-native and CI/CD practices, design database schemas and PL/SQL, and develop blockchain/digital-asset solutions including smart contract work and lifecycle integration in financial services.

Senior systems analyst responsible for analyzing end-to-end trading workflows, translating business needs into requirements, performing data mapping and UAT, and bridging mainframe and distributed systems. Deeply analyzes COBOL/JCL/DB2/VSAM/CICS applications, integrations (REST/SOAP/JSON/XML), and system interactions to ensure data integrity and drive solutions with product and engineering teams.

Design, develop, test, release, and maintain enterprise web applications using React. Collaborate with product, design, back-end, and QA teams to define solutions, produce reusable scalable front-end code, write unit and integration tests, optimize performance across browsers/devices, and mentor junior developers while following Agile practices.

Lead UX design efforts by creating user-centered flows, wireframes, prototypes, and high/low-fidelity mockups. Collaborate with product, engineering, and stakeholders, incorporate customer feedback and usage metrics, and run post-launch metrics analysis to optimize UX.

Design and iterate user-centered experiences: create user flows, wireframes, prototypes, and low/high-fidelity mockups. Incorporate customer feedback, usage metrics, and usability findings pre- and post-launch. Collaborate with product, engineering, business stakeholders, and executive leadership to inform and optimize UX.

Perform automated and manual security testing of applications, analyze scan results, report vulnerabilities, assist remediation, create test plans, conduct exploratory and penetration testing, and collaborate with development, infrastructure, and SecOps teams to secure preproduction code and configurations.