Top Senior Software Engineer Jobs in Chicago, IL

Lead and grow multiple product-focused engineering teams to design, build, deploy, and operate resilient, scalable full-stack and backend systems. Drive architecture decisions, microservices adoption, AWS deployments, engineering best practices, and mentor technical talent while collaborating with product managers to deliver partner-focused credit experiences.

Lead design, development, and delivery of secure, scalable full-stack web and API platforms (customer onboarding, identity management). Work across the SDLC, implement microservices and event-driven architectures, integrate RESTful APIs, drive engineering best practices (CI/CD, testing, security, observability), collaborate with product and UX, and participate in on-call production support.

Develop and maintain React/Next.js front ends, JVM APIs and Python ETL supporting analytics. Build scalable, cloud-native services (AWS/GCP), CI/CD pipelines, containerized deployments, and integrate data technologies. Collaborate with product, mentor teammates, apply AI tooling, and optimize performance and reliability.

Build and scale Buyercloud ad-serving systems that process billions of auctions daily. Design data- and model-driven features, optimize performance and cost, extend observability, participate in on-call rotations, produce documentation and playbooks, and support production incidents.

Lead development and maintenance of high-performance React Native apps across iOS and Android. Improve architecture, manage RN upgrades, debug native modules, own automated testing and CI/CD, optimize performance and stability, and mentor engineers within cross-functional product pods.

Responsible for full software development life cycle, including design, development, and testing of applications while mentoring team members and collaborating with various stakeholders.

The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.

The Senior Trading Software Engineer will optimize performance-critical code, collaborate with trading engineers, implement low-latency solutions, and enhance trading systems.

Lead UI architecture and design for responsive web applications; build reusable components with Angular/React/Vue and TypeScript/JavaScript; integrate UIs with RESTful microservices; enforce accessibility, security, testing, and CI/CD standards; mentor developers and collaborate with UX, backend, and DevOps teams in Agile environments.

Design and implement CIAM backend services for authentication and authorization. Integrate identity systems, manage secure flows, and automate infrastructure.

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.

Lead and grow multiple product-focused engineering teams building full-stack, cloud-native, and AI-enabled solutions. Drive architecture, microservices decomposition, AWS deployments, engineering best practices, mentoring, and cross-team collaboration to deliver scalable credit experiences with partners.

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.

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.

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.

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 Principal Software Engineer will lead platform initiatives, promote AI usage, ensure architecture stability, mentor engineers, and influence technical strategy across teams.

Design, build, modernize, and maintain Java-based data transformation and MDM solutions. Improve architecture, integration, performance, and CI/CD tooling. Collaborate with engineers and product teams, conduct code reviews, support production incidents, and document platform patterns and onboarding materials.

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 architecture, modernization, and development of Group Insurance applications. Modernize mainframe monoliths into Java microservices and micro-frontends on cloud, mentor distributed Agile teams, collaborate with enterprise architecture, product owners and infrastructure, and enable test automation and integrations. Approximately 10% domestic travel.

Lead frontend-leaning full-stack implementation work for carrier and enterprise integrations: architect reusable UI and API layers, author RFCs, guide technical delivery, enforce testing and security best practices, and partner with cross-functional teams to scope and ship production integrations.

Design, build, and own scalable microservices and secure APIs that transfer value across blockchain and banking protocols. Extend in-house blockchain infrastructure, integrate with banks and cloud services, troubleshoot production issues, document system and testing procedures, and collaborate with product and engineering teams to deliver reliable payment experiences.

Design and develop complex software solutions for the FedNow service, leveraging cloud technologies, Java, and Agile methodologies, ensuring high-quality and timely infrastructure support.

Build and own Eve's marketing site and GTM engineering stack: integrate and optimize external tools, design AI agents for sales and marketing, implement webhooks and middleware to sync product/CRM data, and create programmatic campaigns and internal tools in partnership with Marketing, Sales, RevOps, and Product to drive growth and automation.

As a Senior Software Engineer in Trust & Safety, you'll analyze threats, design systems for abuse detection, and collaborate with teams to implement scalable defenses.