Software Engineer Jobs in Illinois, United States

Epic Engineering at Applied Systems builds robust, scalable software solutions for the insurance industry. As an Associate Software Engineer you will contribute to modernizing the codebase, reducing technical debt, and improving code quality while collaborating with senior engineers.

The Options Clearing Corporation (OCC) seeks a Senior Associate, Software Engineering: Software Development Test (SDET) to support the design, development, and maintenance of automation frameworks and test coverage for enterprise and SaaS systems. Day-to-day work includes building and deploying automation tools with Python and Shell scripting, performing unit testing and defect diagnosis across SAP and Clarity PPM, designing test strategies for platforms like HP NGQ, and debugging ETL pipelines

Akuna Capital seeks a Software Engineer – Data Engineering to join its data‑driven team in Chicago. The role focuses on designing, building, and maintaining scalable data pipelines and infrastructure that support trading, quant, and business operations.

Power & Controls team at Collins Aerospace designs modern flight systems and critical power solutions. The Principal Engineer leads the design, development, testing, and documentation of embedded control and diagnostic software for safety‑critical power units, providing technical leadership and ensuring compliance with DO‑178C standards.

Federal Signal's Engineering team develops low-level firmware that powers electronic hardware devices. The Engineer II designs, implements, and tests embedded C/C++ code, collaborates with hardware engineers, and ensures real-time performance using RTOS.

Power & Controls team at Collins Aerospace builds safety‑critical flight power and control systems. The Principal Engineer designs, develops, tests and documents embedded control and diagnostic software, leads multidisciplinary research, and ensures compliance with DO‑178C standards.

CVS Health is seeking a Digital Senior Development Engineer to design and maintain scalable automation frameworks for web and mobile applications. The role involves building test suites using Playwright, Cypress, and JavaScript while integrating agentic AI tools to accelerate workflows.

The SR Principal Software Engineer - LLM Engineering role sits within JPMorgan Chase's Commercial & Investment Bank Trust & Safety Fraud Prevention team. The position sets strategic direction for model serving solutions across LLMs and GNNs, defines MLOps/LLMOps strategies, and drives agentic AI-enabled engineering across the portfolio.

Payments Engineering & Architecture team at JPMorgan Chase builds and scales payment processing platforms handling trillions of dollars daily. As a Lead Software Engineer, you embed with payment application teams, write production code, conduct gemba walks, present tech talks, and author blogs to drive architecture standards and AI‑assisted development.

The Software Engineer, Quantum Systems & Digital Engineering role at this organization develops advanced software tools for the design, simulation, integration, and manufacturing of complex quantum systems. Day-to-day work involves building modular software environments that connect models, data, and engineering workflows across RF, optical, mechanical, atomic physics, and other technical domains, with initial focus on digital-twin and design-automation capabilities for quantum sensing systems.

DRW seeks a Software Engineer for its Tools Engineering team in Chicago. The role involves building and maintaining trading tools for Cumberland and FICC options desks, owning products from prototype to production, and embedding with traders to solve high‑impact problems.

Senior Lead Software Engineer, Full Stack (Cloud Operations Resilience Engineering)

OCC's Enterprise Quality Engineering organization seeks an Associate Principal in Performance Testing to design and execute comprehensive performance and failover testing strategies across mission-critical clearing, risk, and settlement systems. This role combines hands-on performance engineering expertise to ensure systems meet regulatory RTO/RPO requirements while handling multi-region failover scenarios and cloud-native architectures.

Senior Software Engineer – Site Reliability Engineering at Snapsheet, a claims technology company focused on simplifying the claims process. The role builds and maintains scalable, resilient services, automates infrastructure, and enhances observability across the platform.

Lead Software Engineer, Full Stack (Cloud Operations Resilience Engineering) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment?

Capital One seeks a Lead Software Engineer, DevOps to drive cloud operations resilience engineering and major technology transformations. You will lead diverse projects and mentor developers while delivering robust cloud-based solutions for millions of customers.