Top Staff Software Engineer Jobs in Chicago, IL

Design, develop, test, deploy, and support scalable, reliable, secure software solutions. Translate business and product requirements into technical designs, contribute to architecture decisions, improve testing, CI/CD, observability, security, and resilience, and support production systems. Collaborate across teams, resolve technical issues, mentor engineers, communicate tradeoffs, and influence engineering standards. Responsibilities and leadership scope vary across Senior, Staff, and Senior Staff levels.

Develop and integrate embedded C/C++ drivers, libraries, APIs, and applications for software-defined radio platforms. Build embedded Linux software, hardware interfaces, automated tests, and CI/CD workflows. Collaborate across software, FPGA, firmware, and hardware teams; investigate technical issues, conduct code reviews, document designs, improve development practices, and mentor junior engineers. Work includes Python-based test automation and signal-in-the-loop control of RF test equipment.

Staff Software Engineer responsible for architecting enterprise platform services, REST APIs, microservices, event-driven systems, and cloud-native solutions on Azure or AWS. The role leads integration of agentic AI, LLMs, and MCP capabilities; shapes technical strategy; improves developer experience; mentors senior engineers; and establishes architecture standards, documentation, and responsible AI development practices across engineering teams.

Lead software engineering for the Patient Onboarding team, building and improving registration, insurance verification, and care-access workflows. Write full-stack production code, lead complex cross-team initiatives, shape technical direction, improve engineering foundations, and support modern AI-enabled development practices. Collaborate with Product, Design, Analytics, and Engineering to improve patient conversion and system reliability.

Designs, builds, and scales backend services and integrations for payments, billing, identity, and partner connectivity. Sets technical vision and architecture for distributed systems, leads cross-team delivery, manages production rollouts, builds fault-tolerant services and data pipelines, and mentors engineers. The role partners with product, design, and engineering teams to deliver frequent, reliable improvements for Flex’s rent payment platform.

Build and own full-stack MarTech services, scalable APIs, event-driven systems, data pipelines, and customer-facing web experiences. Integrate advertising, analytics, messaging, and marketing platforms while supporting attribution, identity resolution, experimentation, acquisition, and retention. Collaborate cross-functionally with marketing, product, data, design, and engineering teams to launch measurable growth initiatives. Mentor engineers and establish technical best practices across high-scale marketing infrastructure.

Design and scale a feature flagging and A/B testing platform, including high-throughput event ingestion, warehouse-native analytics, real-time feature flag delivery, multi-database SQL support, and distributed systems infrastructure. The role involves full-stack development, architecture, performance optimization, reliability engineering, and technical product influence within a remote startup team.

Lead modernization of legacy .NET applications into cloud-native .NET services. Drive architecture, design scalable APIs, improve performance and resilience, embed observability and secure-by-default patterns, mentor engineers, and support high-severity incidents while collaborating with Infrastructure, Security, Data, and Operations teams.

Lead modernization of legacy systems to cloud-native applications, focusing on .NET technologies. Mentor engineers and enforce coding standards. Collaborate with teams to meet operational requirements.

Own and extend Airbnb’s Minerva semantic layer and data-authoring platform. Build core services, including query rewriting, and deliver reliable systems that help internal users define and consume business metrics. Scope ambiguous, cross-team initiatives, partner with users and product teams, evaluate data and database technologies, and manage design, implementation, testing, deployment, and on-call responsibilities.

Lead design and delivery of enhancements to a next-generation AI agent platform. Own large features and infrastructure, mentor engineers, set technical standards, drive cross-team initiatives, improve reliability and SLOs, and influence product and process decisions to scale systems supporting millions of interactions.

The Staff Software Engineer will build and maintain GoGuardian's Safety product suite, lead architectural decisions, mentor developers, and champion AI adoption in engineering workflows.

Lead iOS platform initiatives that improve developer productivity and AI-agent effectiveness across software development workflows. Build and enhance frameworks, tooling, libraries, build systems, CI, and testing infrastructure for Airbnb’s large-scale Swift codebase. Collaborate cross-functionally to identify inefficiencies, drive roadmap projects, support migrations, and improve AI-agent execution time, token efficiency, reliability, and quality.

Design and implement experiments deep within browser engine subsystems, including DOM, layout, rendering, accessibility, JavaScript runtimes, and networking. Investigate browser behavior, prototype capabilities for programmatic web interaction, measure performance and correctness, profile overhead, and document results. The role requires hands-on systems engineering, browser platform expertise, large-codebase development, and collaboration on AI-agent tooling.

Build and maintain large-scale healthcare data platform software using HL7/FHIR, Apache Spark, Python, Scala, Databricks, and cloud technologies. Shape technical roadmaps, architecture, and implementation approaches; collaborate with product and business stakeholders; maintain CI/CD and staging environments; and mentor junior engineers. The role requires deep healthcare data expertise, technical leadership, and experience with modern software engineering and integration practices.

Lead hands-on full-stack development of scalable product features, from database models through UI components. Set technical direction, architect and optimize systems, mentor engineers, conduct code reviews, improve workflows, and champion testing, code quality, and continuous deployment. Collaborate with product and design teams, resolve technical bottlenecks, and lead production releases in a fast-paced startup environment.

Provides technical leadership for SingleStore Flow, a data migration and integration product. Designs and implements reliable distributed systems spanning CDC pipelines, migration engines, APIs, and cloud services. Leads architecture, complex technical initiatives, production troubleshooting, observability, testing, and operational improvements. Partners with product, support, customers, and engineering teams while mentoring engineers and advancing AI-assisted development and migration capabilities.

Lead the technical vision for test automation and quality architecture across cloud, web, and mobile systems. Design scalable testing frameworks, integrate automation into CI/CD pipelines, analyze quality metrics, mentor engineers, guide technical decisions, and communicate outcomes to engineering leadership. The role emphasizes Playwright with TypeScript, Maestro with YAML, API and integration testing, system validation, and AI-first automation practices.

Leads full-stack software engineering for scalable 3D geospatial and non-geospatial features using React, C#, ArcGIS, databases, cloud technologies, and deployment pipelines. Designs complex solutions, integrates LLM APIs, owns testing and quality assurance, resolves production issues, supports applications, and mentors junior engineers. The role collaborates with product and business stakeholders while driving architecture, implementation, DevSecOps practices, and continuous improvement.

Leads the architecture and development of Greyspace, a realistic simulated internet for cyber ranges. Designs distributed services, APIs, orchestration, networking behavior, isolation boundaries, and operator workflows. Builds and reviews production software, validates DNS, TLS, web, and mail services, and ensures reliability through testing, observability, performance validation, recovery procedures, and deployment readiness. Partners across Product, Security, infrastructure, and engineering teams while mentoring engineers and driving technical standards.

Lead technical strategy and execution for multi-quarter initiatives, build and maintain software systems using AI, mentor and elevate engineers, collaborate across disciplines, and protect user privacy and security. The role involves working in an AWS and Kubernetes environment with technologies including Python, TypeScript, React, Go, Airflow, dbt, and Claude Code.

Leads architecture and technical direction for scalable, high-availability software services. Owns complex, multi-team initiatives, makes autonomous technical decisions, partners cross-functionally, mentors engineers, establishes standards, and advocates for quality. The role develops mission-critical systems supporting millions of endpoints and requires deep Java expertise, scalable system design, API development, relational databases, and strong testing practices.

Lead front-end architecture and cross-team technical initiatives for the NodeZero platform. Build scalable React and TypeScript systems, reusable components, developer tooling, and shared frameworks while improving performance, reliability, accessibility, observability, and CI/CD workflows. Mentor engineers, establish engineering standards, guide technical strategy, reduce technical debt, and collaborate with Product, Design, Platform, Security, and engineering teams.

Design, build, and operate high-throughput, low-latency ad-serving infrastructure processing millions of requests per second. Optimize GPU-powered TensorRT inference, feature stores, model serving, benchmarking, experimentation tooling, and system reliability. Partner with machine learning engineers to productionize models and own systems through design, deployment, observability, capacity planning, incident response, and optimization.

Lead the technical evolution of Kilo Code, a large-scale VS Code AI coding extension. Responsibilities include setting architecture and performance direction, building advanced AI-assisted workflows, optimizing startup time and memory usage, driving cross-team initiatives, mentoring engineers, owning production delivery, and establishing engineering standards for context optimization and LLM workflows. The role partners with Product and Design to shape roadmaps and requires hands-on technical leadership across a mature codebase serving millions of users.