Top Staff Engineer Jobs in Chicago, IL

As a Principal Engineer, you will design, scale, and lead the development of Adyen's financial products while mentoring engineers and collaborating with product teams.

Lead the evolution of Adyen's merchant onboarding process by architecting systems that optimize activation and compliance, utilizing applied AI to automate merchant document interpretation and KYC processes.

As a Senior Staff Engineer at Braze, you will lead technical initiatives in the Channels division, ensuring effective message delivery, mentoring engineers, and enhancing architectural quality while actively contributing to software development.

The role involves leading the Code Gen team to modernize legacy applications using AI-powered tools, ensuring system scalability and efficiency through collaboration and strategic technical decisions.

Lead integration, validation, and fielding of advanced weapon capabilities on X-Bat across the full lifecycle. Define system behaviors and architectures, coordinate cross-functional integration, support lab/ground/flight tests, perform troubleshooting and root-cause analysis to reduce integration risk and accelerate capability delivery.

Lead design and development of advanced electrical systems for autonomous aircraft, including circuit and subsystem design, part selection, schematic capture, simulation, verification, debugging, and production releases. Integrate embedded systems and sensors for autonomy, coordinate cross-functional teams, mentor engineers, define technical requirements, and develop automated test solutions to improve hardware reliability and production readiness.

Lead operational analyses, modeling, simulation, and wargaming to evaluate autonomous aircraft effectiveness, survivability, and mission impact. Build and run mission-level models (AFSIM, STK, MATLAB, Python), perform trade and sensitivity studies, collaborate with engineering/product and DoD stakeholders, develop CONOPS, document findings, and coach junior analysts.

Own and maintain native C++ build systems for autonomous aircraft. Improve developer velocity by reducing build/test cycle time, integrate CI with HIL and simulation, implement monitoring and alerts, troubleshoot build/test failures, and collaborate with engineers to design and deploy DevEx/DevOps solutions.

Lead aircraft-level thermal analysis and characterization for VTOL unmanned aircraft. Develop and validate analytical and CFD models, run trade studies, define requirements, plan and analyze thermal tests, mentor teams, and mitigate aircraft thermal risks to meet mission-critical aerospace requirements.

Lead survivability engineering for autonomous aircraft: design and optimize low-observable features, perform EM signature modeling and RCS testing, partner with multidisciplinary teams and materials scientists, translate threats into survivability requirements, and support assessments and milestone decisions throughout the program lifecycle.

Design and implement high-quality C/C++ embedded avionics software for X-Bat UAVs. Lead cross-functional teams, own features from design to production, integrate firmware and autonomy systems, and develop HIL/virtualized test environments. Produce architecture and test documentation, build CI/test tools, prototype concepts, and ensure reliability, safety, and compliance for aerospace deployments.

Design, develop, and field high-performance Ground Control Station and C2 software using C++/Qt/QML and QGroundControl. Lead architecture and technical direction, mentor engineers, define APIs/ICDs, debug integration/latency issues, support field tests, implement post-mission debrief tools, and ensure interoperability with C2 standards.

Perform operational analysis and M&S of autonomous aircraft across component, system, mission, and campaign levels. Build and run simulations (AFSIM, STK, MATLAB, Python), conduct force-on-force and sensitivity analyses, inform design trade-offs, engage DoD stakeholders, refine CONOPS, and produce technical reports and briefings to support product and customer decisions.

Architect and deliver scalable, secure systems across teams; solve complex cross-team problems; lead large technical initiatives; evaluate emerging technologies; mentor engineers; align technical direction with product and business outcomes while balancing performance, maintainability, and cost.

Integrate and fine-tune existing AI models into product features, build evaluation frameworks and observability for production AI, collaborate with data science and engineering, and develop AI-powered application features using Python to improve user experience.

As a Staff Engineer for Revenue, you'll shape technical vision and architecture for billing and pricing systems, ensuring correctness while enhancing cross-team collaboration.

The Staff Engineer at Pager Health leads system design, mentors engineers, manages projects, and collaborates with cross-functional teams to develop scalable healthcare applications.

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 Staff Site Reliability Engineer will lead reliability strategies, manage high-risk initiatives, and enhance engineering standards while ensuring system reliability and operational excellence within a hybrid work environment.

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

Drive application security by running SAST/SCA, threat modeling, vulnerability management, and remediation. Advise on secure architecture, train engineers, support pentests/bug bounties, and administer AWS Control Tower and IAM. Innovate with AI to improve AppSec tooling and practices.

As a Senior Site Reliability Engineer, you'll design and build complex systems, support Atlas platform operations, automate processes, and ensure high availability of services.

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, build, and operate the core data warehouse, ingestion, orchestration, and cataloging platform. Develop batch and streaming pipelines, ensure data quality, governance, observability, and provide ML data platform capabilities. Lead architecture, improve platform reliability and performance, and collaborate with product, engineering, data science, security, and compliance teams.

The Staff Engineer, Quality Platform will establish quality metrics, standards, and tooling while partnering with engineering teams to embed quality processes and foster a quality-driven culture across the organization.