Top Senior Systems Engineer Jobs in Chicago, IL

Support deployment, operation, and improvement of AI-enabled platforms and cloud services (primarily Azure). Implement GitHub-based GitOps CI/CD, author Terraform and IaC, operate containerized workloads, provide 24x7 production support, ensure security/compliance, optimize performance/cost, and maintain platform documentation and runbooks.

Provide advanced, customer-facing technical escalation support for CalixOne and cloud-connected Wi‑Fi premises equipment. Troubleshoot complex networking and cloud issues, use data-driven insights to recommend improvements, create technical documentation, support early adopter customers, collaborate cross-functionally including executive communication, and complete ongoing training to stay current on features and technologies.

Lead systems engineering for space electronics products: develop requirements, manage technical baseline, perform analysis, support design reviews, verification/validation, propose and support new product development, and collaborate across mechanical, electrical, software, and firmware teams.

Leads technical pre-sales activities for cyber resilience and disaster recovery solutions. Partners with sales teams, account managers, and channel partners to understand customer needs, design architectures, conduct evaluations and proof-of-concepts, configure systems, respond to RFPs, and deliver technical presentations. Builds customer-specific solutions, validates interoperability and performance, positions offerings against competitors, and supports opportunities through technical close and revenue growth.

Lead technical engagement with Global Systems Integrator partners to embed VAST into AI, hybrid cloud, and data infrastructure practices. Build reference architectures, enablement programs, demos, and playbooks; support sales cycles, drive partner-led pipeline, and bring partner feedback into product and engineering.

Lead manufacturing systems engineering for IRCM/RFCM product lines: develop manufacturing plans, readiness assessments, automation designs, cost models, and maturity plans; drive digital transformation, capital/NCTA/CRAD planning, and cross-functional producibility solutions to prepare programs for production.

Lead and sustain large-scale HPC systems supporting NOAA/NWS forecasting. Manage scheduler/software stack (PBS Pro/Slurm), optimize performance and throughput, troubleshoot multi-node Linux clusters, develop scripts, and support 24/7 operations with occasional travel and on-call duties.

Lead manufacturing systems strategy and execution for IRCM products: manufacturing planning, MRAs, automation design, cost modeling, digital transformation, producibility gap analysis, capital/NCTA/CRAD planning, and support of technology demonstrator builds.

Implement, validate, and maintain application security controls across database, middleware, web, API, and presentation layers. Identify and remediate application-layer risks, assess internet-facing exposures, enforce auth/credentials/encryption standards, coordinate with vendors and application owners, and drive remediation using vulnerability scanning and security testing. Improve application security posture and governance across a large portfolio of commercial third‑party applications.

Lead architecture, deployment, security, and governance of multi-cloud (M365, Google Workspace, GCP) environments, including GCC High. Drive migrations, automate workflows with PowerShell/Python/Apps Script/GAM/REST APIs, provide Tier 3 support, and produce documentation and SOPs while ensuring compliance with government security standards.

Design, develop, and validate complex models and simulations and custom algorithms for EOIR/RF targeting and tracking systems. Collaborate with engineers and physicists to implement algorithms into systems, create technical presentations and documentation, and support requirements and embedded software implementation. Work on-site supporting classified programs.

Lead integration and test activities for complex electronic systems: create test plans/procedures, automate and execute integration, verification, and qualification tests, troubleshoot hardware/software/firmware, and collaborate across disciplines to ensure successful system performance in lab and aircraft installations.

Lead integration and test of complex electronic systems from hardware/software/firmware through aircraft installation. Develop and execute test plans, procedures, automation, and reports; perform system integration, design verification, qualification, and EMI testing in labs or field. Collaborate across disciplines, troubleshoot issues, and support lifecycle systems engineering.

Design, develop, and validate complex models and simulations and custom algorithms for EOIR/RF systems. Apply systems-engineering to physics phenomenology, implement algorithms into products, collaborate with engineers and physicists, produce technical documentation, and present technical results. Proficiency in MATLAB, Python, and C/C++ is required.

Lead systems design activities using MBSE/DOORS to decompose requirements, perform trade studies, produce specifications and VCRMs, and coordinate cross-discipline design and verification for EOIR/RF systems in a DoD environment.

Lead standing up, modifying, and sustaining manufacturing test capability for RF/electronic warfare systems. Shape acceptance and environmental test requirements, drive test equipment/fixture design and software integration, manage schedule/cost using earned value, report to leadership, and lead manufacturing readiness and customer review events.

Lead systems design using MBSE/DOORS to decompose requirements, perform trade studies, maintain traceability/verification artifacts, and coordinate multidisciplinary hardware/software/firmware teams for EOIR/RF systems. Support technical presentations, DoD program phases, and secure government-clearance program needs.

Design, build, and maintain scalable data pipelines and tenant-aware APIs to ingest and transform data from varied sources. Work with event-driven and batch architectures, implement authentication and integration patterns, ensure observability/monitoring, optimize data flows for cost and performance, and collaborate with product, infrastructure, and engineering teams to onboard and maintain data sources at scale.

Own and build GTM systems and automations across HubSpot, Clay, and partner integrations. Design quote-to-cash flows, maintain AWS co-sell pipeline, create multi-system workflows, ensure data quality and reporting, prototype and iterate GTM infrastructure, and collaborate with Sales, Growth, and Partnerships leadership.

Improve and scale Airship's distributed data systems by reading and writing Java code, diagnosing performance and cost issues, implementing architecture and library changes, deploying improvements, responding to reliability incidents, and collaborating with backend engineers.

Support design and deployment of distributed energy programs by evaluating utility distribution systems, assessing integration requirements for BESS/EVs/DERs, developing OT and controls strategies, supporting interconnection and hosting-capacity analysis, and collaborating with utility and internal teams to translate technical requirements into deployable recommendations.

As a Distributed Systems Engineer, you'll design and evolve LiveKit's core systems, implement resilient architectures, and enhance reliability and developer velocity, working on critical features in production environments.

The role involves designing and evolving core systems at LiveKit, implementing resilient architectures, and building tools to enhance system reliability and developer speed. Strong distributed systems experience and programming skills are essential.

Design, implement, and ensure quality of systems stack, tools, and SDK integration for AI frameworks. Collaborate with hardware and ML teams, apply engineering principles, write low-level/high-performance code, define architecture, estimate scope, and drive coding standards.

Design, build, and operate secure core infrastructure for MPC signers, HSMs, TEEs, distributed databases, and blockchain-connected services. Develop low-level Rust middleware, secure APIs, and networking; optimize performance, reliability, latency, and resource usage; integrate cryptographic protocols into production; and collaborate with infrastructure, security, research, product, clients, and partners.