Top Senior Systems Engineer Jobs in Chicago, IL

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.

Build and operate secure, scalable multi-cloud infrastructure across AWS, GCP, and networking platforms. Develop self-service tooling, infrastructure-as-code defaults, cloud guardrails, and standardized platform patterns. Lead cross-team infrastructure initiatives, technical investigations, and operational improvements while partnering with security, compute, routing, and other infrastructure teams.

Designs and integrates secure information systems, cloud, and defense architectures; leads federal NIST RMF and ATO processes; implements security controls; performs vulnerability, threat, and risk assessments; advises engineering and program teams; and manages continuous monitoring, compliance, audit, and patch-management activities.

Designs, implements, administers, and supports critical Linux infrastructure and enterprise systems. Diagnoses system issues, develops remediation plans, supports application infrastructure, and contributes to compliance activities. Builds automation, deployment pipelines, and infrastructure-as-code solutions using Linux, cloud, Kubernetes, GitOps, and configuration-management tools. Partners with engineering, security, and operations teams to improve reliability, scalability, security, and deployment efficiency while mentoring junior engineers.

Lead power-system studies and resource interconnection analyses for renewable and conventional generation, transmission, distribution, and load applications. Develop and troubleshoot power-system models and automation scripts; conduct power flow, stability, short-circuit, EMT, harmonic, and techno-economic studies. Guide team members, manage technical and commercial project deliverables, engage with RTO/ISO stakeholders, support innovation, and contribute to proposals and customer relationships.

Designs, integrates, tests, validates, and troubleshoots complex electronic sensing, targeting, and tracking systems. Responsibilities may include systems engineering design, modeling and simulation, MBSE, mission modeling, hardware/software/firmware troubleshooting, integration-test planning, verification testing, and cross-functional collaboration. The role is full-time and on-site in Rolling Meadows, Illinois, requires a Secret clearance at start, and involves approximately 10% travel.

Execute and support an agency-level cybersecurity program. Responsibilities include administering RSA Archer, architecting cybersecurity solutions, troubleshooting security issues, developing remediation recommendations, managing workstations and servers, analyzing security architectures, and advising on NIST, FISMA, information security, privacy, and cloud guidelines. The role also involves security documentation, stakeholder coordination, and security information and event management.

Lead the architecture, hydraulic design, documentation, integration, manufacturing readiness, controls coordination, and commissioning of liquid-cooling and mechanical distribution systems for modular AI data centers. Own P&IDs, calculations, equipment and valve schedules, interfaces, standards, and performance validation. Collaborate with thermal, electrical, controls, manufacturing, commissioning, supply chain, OEM, and field teams to create scalable, serviceable, repeatable systems for deployment across multiple sites.

Designs, deploys, configures, supports, and troubleshoots Esri ArcGIS Enterprise environments across on-premises, Azure, and AWS infrastructures. Responsibilities include system design, automation scripting, security, licensing, disaster recovery, backups, documentation, updates, third-party integrations, incident response, and root-cause analysis. Collaborates with geospatial, network, and development teams to support enterprise GIS systems for internal and external clients.

Own hardware architecture for kiosks and on-site systems, develop reference designs and BOMs, qualify components and vendors, design power/recovery and edge compute standards, build and test prototypes, enable provisioning/monitoring/remote recovery, support pilots and field installs, troubleshoot failures, and manage hardware lifecycle and documentation.

Administer and secure identity, email, network, firewall, and collaboration infrastructure for a distributed workforce. Responsibilities include Okta or equivalent SSO management, email security controls, incident response, network administration, routing, switching, VPNs, firewall policies, documentation, vendor management, and infrastructure improvement. The role partners with Security and Help Desk teams, troubleshoots complex issues, supports onboarding and offboarding, and manages moderately complex projects independently.

Designs, builds, governs, secures, and optimizes Magna’s Azure and hybrid cloud environment. Partners with development and infrastructure teams on IaaS, PaaS, container, serverless, identity, networking, and connectivity architectures. Owns cloud governance, stability, cost management, monitoring, documentation, change management, and platform updates. Supports Microsoft 365 adoption, resolves cross-team issues, communicates service performance, and develops IT staff.

Lead design and delivery of enterprise integrations, automation, and AI-enabled workflows across SaaS platforms. Architect scalable APIs, conversational IT/self-service experiences, and agentic LLM workflows while partnering with Security, Infrastructure, and Product to ensure governance, reliability, and operational excellence.

Design, develop, and deliver scalable .NET back-end and front-end solutions within an Agile, DevOps-oriented team. Lead technical design, code reviews, testing-first practices, CI/CD pipelines, containerized deployments, and ensure non-functional requirements (security, performance, scalability, maintainability). Mentor peers and collaborate across product, design, and architecture to produce high-quality software.

Provides technical expertise for hydraulic systems and customer applications. Works with OEMs and distributors to evaluate requirements, recommend products, troubleshoot complex mechanical and electrohydraulic issues, support technical sales, and assist with testing, validation, and implementation. Develops customer documentation and training materials while collaborating with engineering, quality, manufacturing, and sales teams. The role requires approximately 20% domestic travel and supports global engineering collaboration.

Supports the IHS Electronic Health Records Modernization program by designing, integrating, installing, configuring, testing, and maintaining biomedical and end-user devices. Develops solutions for complex device engineering, infrastructure, security, backup, and redundancy challenges; maintains technical documentation; collaborates with cyber and implementation teams; and may lead or mentor others. The role is fully remote, requires Oracle Health experience, and may involve up to 25% travel.

Design, build, and deploy a lightweight, high-performance network sensor for OT/ICS environments. Lead system-level design, packaging, CI/CD, kernel and systemd tuning, container and cloud integration, production support, and cross-team collaboration to ensure maintainability and secure deployments.

Develops, integrates, validates, and supports manufacturing test stations, fixtures, procedures, and hardware for RF electronic warfare systems. Responsibilities include troubleshooting production and test issues, supporting acceptance and environmental testing, collaborating with design, quality, production, and project teams, conducting testability reviews, and implementing continuous improvements to reduce defects, cost, and cycle time.

Design, develop, and maintain secure integrations across NetSuite, Coupa, Leapfin, and other enterprise systems. Build iPaaS workflows, custom connectors, webhook and event-driven automations, bulk synchronization processes, monitoring, error handling, and retry mechanisms. Translate finance requirements into technical specifications and data mappings, support implementation projects, document architectures, and maintain audit readiness. Apply AI-powered tooling to automate finance operations while ensuring compliance, security, and reliable handling of sensitive financial data.

Lead architecture, integration, deployment, security, and sustainment of the Informatica Data Governance Suite in AWS GovCloud. Design highly available and recoverable infrastructure, implement Infrastructure as Code and CI/CD, establish security and compliance controls, coordinate multidisciplinary engineering work, oversee testing and monitoring, manage technical risks, and transfer operational knowledge to NAVSUP personnel.

Lead development and maintenance of internal design system libraries, tools, and Figma plugins. Implement AI solutions to speed design workflows, own medium-to-large features end-to-end, run internal user research, provide support and on-call coverage, conduct design and code reviews, and collaborate with designers and engineers to drive technical strategy and adoption.

Leads integration and testing of complex electronics systems from hardware and software design through aircraft installation. Develops test plans, procedures, automation, and reports; executes system integration, design verification, environmental qualification, and EMI qualification testing. Troubleshoots integrated hardware, software, and firmware, coordinates multidisciplinary teams, and applies systems engineering processes across the product lifecycle. The role is full-time, on-site in Rolling Meadows, Illinois, requires a Secret clearance, and involves 10% travel.

Own and evolve Jira, Aha!, and related product and engineering platforms. Configure workflows, permissions, schemas, dashboards, automations, integrations, and reporting while improving governance, data quality, reliability, and adoption. Partner with Product, Engineering, TPM, Finance, and IT teams to translate business needs into scalable systems. Lead implementations, migrations, platform lifecycle management, troubleshooting, documentation, training, and tooling evaluations.

Build and maintain invoicing, reimbursement, revenue recognition, claims, and financial reporting models using SQL and dbt. Reconcile merchant, operational, warehouse, and accounting data; investigate variances; validate expenses; and establish automated financial controls. The role also triages data issues, investigates production APIs, supports audits, partners on merchant configuration, and drives upstream fixes through root-cause analysis and automation.

Design, build, monitor, and maintain large-scale Linux infrastructure supporting distributed S3-compatible object storage across multi-cloud environments. Responsibilities include kernel and storage optimization, network and hardware troubleshooting, automation with Chef or Ansible, observability, forecasting capacity, technical leadership, project coordination, mentoring, documentation, and on-call support.