Top Software Engineer Jobs in Chicago, IL

Own and evolve the Subscriptions and Payments backend: design APIs, integrate providers, improve reliability and scalability, lead architecture and code reviews, collaborate cross-functionally, and participate in on-call rotations.

As a Billing & Analytics Software Engineer, you'll design and maintain the billing pipeline, integrate billing systems, and develop customer-facing analytics dashboards to support revenue recognition and operational observability.

Senior Full Stack Engineer for Grainger's Home Page and Display Customizations team. Build and maintain reusable React components, design and evolve backend services, improve observability and reliability, modernize legacy systems, and contribute to micro-frontend architecture. Mentor junior engineers, lead team projects, and collaborate with stakeholders to deliver high-quality customer-facing features.

Maintain and improve GameChanger's backend API server and SDK. Implement API/SDK changes, improve developer ergonomics, optimize performance and scalability, design critical systems, document and mentor teammates, and participate in on-call rotation.

Design, implement, and maintain partner integration solutions; translate partner requirements into scalable technical implementations; troubleshoot and automate fixes; collaborate with product and engineering teams to improve tools and ensure successful partner onboarding and launches.

Lead design and delivery of scalable customer-facing features, services, and APIs that process real-time data and AI-powered insights. Build web experiences, contribute to LLM/AI workflows, ensure reliability through observability and rollout practices, and collaborate cross-functionally with Product, Design, ML, and platform teams.

Lead design and implementation of complex Android platform projects, build core frameworks and tooling, collaborate with product and design, drive Android best practices, review code and documentation, support app stability and performance, and participate in on-call rotation. Evangelize AI code-generation tools to document and create code.

Build and evolve Circle Discover marketplace features: high-converting purchasing flows, algorithmic recommendations, content feeds, and listings. Work across a Ruby on Rails backend and React/Next.js front-ends, optimize performance and SSR/SSG, collaborate with designers and leaders, and improve codebase quality while shipping at pace in a distributed remote team.

Participate in a two-day social-impact hackathon building tech solutions for nonprofits. Develop, test, and troubleshoot software; write secure code; collaborate with engineers and stakeholders; use automation and approved AI development tools responsibly; attend training and mentorship; and potentially be considered for a 2027 Software Engineer Program Summer Internship.

The Software Engineer will build new systems, enhance existing ones, and integrate with external systems, collaborating closely with developers, QA, and product managers.

Build and operate high-throughput backend services powering AI agent orchestration, connector integrations, and real-time data pipelines. Design scalable core platform services, collaborate with ML, frontend, and product teams, implement infrastructure-as-code and CI/CD, and mentor junior engineers to deliver reliable, AI-powered features.

As a Software Engineer, you'll design, build, and maintain IAM solutions, ensuring security and reliability while working with cloud computing standards.

Build and own end-to-end full-stack systems for AI-powered agentic trading across web and React Native mobile. Implement real-time, low-latency UIs and Go backend services, integrate streaming AI/ML features and market data, drive architecture and code quality, and collaborate with AI/ML, design, and product teams to ship production-ready features used by millions.

Design, build, and maintain full-stack web and API solutions using React, TypeScript, Node.js, and GraphQL. Lead architecture and DevOps efforts, improve CI/CD and observability, mentor engineers, collaborate with product and design, and ensure security, performance, scalability, and reliability. Troubleshoot issues, create technical documentation and diagrams, and continuously improve developer experience and engineering standards.

Contribute to modernization and technical-debt reduction efforts, implement and test features, participate in code reviews, follow CI/CD and Agile practices, and collaborate with senior engineers while learning cloud and security practices.

Build and maintain high-performance, low-latency cloud-native microservices in Go for identity resolution and audience targeting. Own features end-to-end, optimize query and data-access paths (Aerospike, Kafka, Snowflake, S3), ensure reliability with observability and CI/CD, troubleshoot production incidents, enforce data quality, and collaborate with product, SRE, QA, and data teams to evolve identity and audience-domain architecture.

Develop and maintain primarily desktop full‑stack applications using .NET and SQL Server. Design, implement, test, and support solutions, troubleshoot issues, uphold software engineering best practices, and collaborate with developers and traders to deliver business-focused functionality.

Develop and maintain custom options valuation and risk-management systems. Collaborate with traders, risk managers, and quants to gather requirements, design solutions, implement high-performance code, troubleshoot issues, document models and tests, and improve scalability, accuracy, and performance of pricing systems.

The Staff Software Engineer will lead the architecture of the FCM platform, ensuring financial correctness and system integrity, while modernizing systems and improving operational tooling.

The Junior Software Engineer will engage in the software development life cycle, perform hands-on coding, diagnose product issues, and contribute to software deployment.

Design and develop scalable software solutions, collaborate with teams, implement real-time systems, ensuring engineering excellence and operational success.

Design, build, and maintain full-stack web and mobile applications using modern JavaScript frameworks. Produce high-quality, testable code, participate in architecture and estimation, support existing client sites, follow QA and review practices, and optimize performance and scalability. Collaborate with product managers, UX, and cross-functional teams.

Lead teams and projects to design, build, and operate scalable, highly available payment systems. Mentor engineers, collaborate with product managers, deliver cloud-native full‑stack solutions using microservices, containers, databases, and AWS/Azure/GCP technologies, and occasionally write or review code.

Lead a team and portfolio of backend engineering projects to build cloud-based, microservices-driven solutions. Mentor engineers, collaborate with product managers, and implement scalable systems using Java/Python/Node/Go/Scala, containers, orchestration, databases, and AWS services to meet regulatory and customer needs.

As a Senior Software Engineer on the Bank Payments team, you will lead technical projects, mentor engineers, and develop scalable Java-based web services while driving innovation in North America's core banking payment systems.