Top Tech Jobs & Startup Jobs in Chicago, IL

Lead accounting and finance system conversion initiatives for banking clients: gather and document requirements, define functional design and data mappings, support chart of accounts mapping and data migration, ensure regulatory and accounting compliance, validate conversion results via reconciliations and testing (SIT/UAT), triage defects, and mentor junior analysts while communicating risks and status to stakeholders.

Develop, architect, and maintain high-quality React Native mobile applications for iOS and Android. Implement pixel-perfect UIs, optimize performance, integrate native APIs, write automated tests, participate in agile ceremonies, and migrate React web apps to React Native. Collaborate with design and open-source communities to diagnose and fix bugs and implement smooth animations and transitions.

Develop scalable enterprise Android applications using Kotlin, Java, Android SDK, Jetpack, and modern architecture patterns. Build accessible interfaces, integrate backend services, implement asynchronous processing and data persistence, and develop commerce features such as search, checkout, payments, and order processing. Write automated tests, troubleshoot production issues, support releases and CI/CD, conduct code reviews, and collaborate with product, design, backend, and QA teams. Travel and relocation across unanticipated U.S. locations are required.

Own the strategy, roadmap, and execution of scalable B2B payment portals. Lead discovery, MVP delivery, backlog prioritization, user stories, and post-launch optimization. Collaborate closely with engineering, UX/UI, compliance, risk, operations, legal, and support teams to design secure access controls, lending workflows, partner onboarding, and regulatory processes. Drive user-centered product decisions, define business rules and edge cases, and reduce manual processing through digital workflow improvements.

Build and maintain scalable batch and incremental data pipelines using Python, SQL, and Snowflake. Develop data warehouse models, transformations, automation, quality checks, lineage, alerting, and performance optimizations. Collaborate with analysts, data scientists, and application teams to deliver trusted datasets, while documenting pipelines, schemas, and data contracts.

Manage and modernize MySQL database environments supporting large-scale, multi-tenant applications. Monitor database health, performance, capacity, and availability; optimize SQL and troubleshoot production incidents. Support MongoDB operations, database scalability, monitoring through Datadog and Grafana, root-cause analysis, secure database practices, and safe database changes. Collaborate with application, platform, and engineering teams while using Jira and GitHub throughout the delivery lifecycle.

Designs, builds, and ships scalable full-stack applications and services. Responsibilities include developing Java and Spring Boot APIs and microservices, building React interfaces, managing NoSQL data, contributing to architecture, using AI coding assistants, reviewing code, mentoring engineers, and partnering with product, design, QA, and DevOps teams.

Build and maintain responsive, accessible web interfaces using React, HTML, CSS, and JavaScript/TypeScript. Integrate applications with REST APIs and back-end services, implement WebSocket features, optimize Core Web Vitals, and develop reusable design-system components. The role also involves Node.js tooling, cross-browser compatibility, code reviews, QA collaboration, and front-end testing.

Build and maintain scalable batch and incremental data pipelines using Python, SQL, and Snowflake. Develop warehouse models, transformations, automation, data quality checks, lineage, alerting, and performance optimizations. Collaborate with analysts, data scientists, and application teams to deliver trusted datasets, while documenting pipelines, schemas, and data contracts.

Own cloud infrastructure, CI/CD, and cloud operations across GCP and/or AWS. Build Terraform-based platforms, Jenkins pipelines, Docker workflows, automation scripts, monitoring, logging, alerting, and incident response processes. Improve cloud security, access control, cost efficiency, and reliability while partnering with engineering and QA teams. Mentor team members and streamline build, testing, and release processes.