Top Systems Engineer Jobs in Chicago, IL

Operate and improve global developer platform infrastructure supporting source control, CI/CD, artifact repositories, build systems, observability, and AI services. Responsibilities include reliability and performance optimization, high availability, disaster recovery, incident response, capacity planning, automation, on-call practices, cloud SaaS integration, and collaboration with global development teams. The role requires hands-on Linux, programming, Kubernetes, Docker, CI/CD, security, and infrastructure operations experience.

Lead DoD systems development programs using MBSE, SysML, Cameo, and digital engineering practices. Architect systems, guide teams through the systems engineering lifecycle, establish requirements traceability, customize and automate modeling tools, mentor engineers, and collaborate with software and domain experts. The role supports software-intensive, open-architecture systems across defense mission areas and requires an active Secret clearance with eligibility for Top Secret.

Build and operate a distributed telemetry data platform for ingest, processing, indexing, compression, storage, and query. Design APIs, horizontal scaling, fault tolerance, multi-environment deployments, customer data isolation, and high-performance systems supporting petabytes of data and millions of series. Engineers own projects from design through release and operations while solving complex distributed-systems challenges on a small founding team.

Lead and support z/OS systems programming in a multi-Sysplex mainframe environment: install/upgrade/tune z/OS and third-party software, troubleshoot complex issues, collaborate with cross-functional teams, participate in DR testing, document configurations, work with vendors, provide 24x7 on-call support, and lead modernization projects.

Lead CICS systems engineer responsible for CICS engineering, maintenance, performance tuning, debugging and dump analysis in a 24x7 Sysplex/CICSPlex environment. Interface with developers and operations, perform upgrades and SMP/E maintenance, monitor with Sysview/CICS tools, support WebSphere MQ and COBOL applications, and provide on-call support to resolve production issues.

Develops, installs, validates, calibrates, repairs, and maintains laboratory instrumentation, automated test systems, and test fixtures. Creates calibration procedures, technical documentation, validation methods, and calibration certificates while ensuring safety and compliance. Leads laboratory capital projects, including technical scope, schedules, budgets, vendors, and facilities coordination. Drives automation and continuous improvement initiatives, supports global technical consistency, and trains laboratory personnel.

Design, implement, and optimize low-level systems software, networking components, protocols, and performance-critical applications. Develop client-server and socket-based systems using C++ and Python, apply algorithms and memory management techniques, and build comprehensive tests. Debug memory leaks, packet flow, and concurrent execution using GDB and Wireshark. Collaborate with cross-functional teams on modular codebases, technical documentation, code reviews, and release-cycle version control.

Drives performance engineering and scalability across software systems by identifying bottlenecks, optimizing code, queries, databases, and architecture, and implementing fixes. Builds performance frameworks, data-generation tools, benchmarks, and CI/CD automation using k6, JavaScript, Grafana, and InfluxDB. Establishes performance standards, investigates distributed systems and cloud environments, documents architectural decisions, and collaborates with engineering teams to improve throughput, latency, reliability, and efficiency.

Designs, develops, maintains, and enhances business-critical applications, SQL Server databases, financial systems, integrations, reports, and data workflows. Supports accounting processes including general ledger, billing, accounts payable, accounts receivable, and financial reporting. Troubleshoots production issues, improves performance, ensures data integrity and security, documents technical systems, and collaborates with accounting, operations, technology teams, and vendors on business solutions.

Serves as the chief systems engineering and architecture advisor to USMEPCOM leadership. Designs solutions for complex applications, systems administration, and network challenges; performs systems management and integration across network domains; delivers executive-level technical briefings; and provides expertise on engineering best practices and technical innovation.

Serve as the senior technical advisor for enterprise systems engineering, architecture, integration, and innovation. Design solutions for complex application, systems administration, and network issues; guide systems management and integration across network domains; and lead technical architecture solutioning. Collaborate on proposal development, technical narratives, graphics, risk mitigation, oral presentations, rehearsals, and Government Q&A. The role requires executive briefings, cloud certification, enterprise IT architecture experience, and Secret clearance.

Design, develop, test, and support ServiceNow automation for ITSM, infrastructure, cloud, identity, endpoint, and security operations. Build workflows, integrations, catalog automations, scripts, and reusable components; integrate enterprise platforms through APIs, IntegrationHub, and MID Server. Improve reliability, governance, CMDB alignment, documentation, performance, and user adoption while troubleshooting production issues and collaborating across teams.

Designs and implements mechanical retrofits, rebuilds, upgrades, and modernization solutions for packaging machinery, robotics, palletizers, and automated manufacturing systems. Responsibilities include field assessments, mechanical design, CAD documentation, troubleshooting integrated mechanical and controls systems, commissioning, root cause analysis, and technical support. Requires collaboration with customers, service teams, manufacturing, maintenance, and engineering groups. The role requires substantial travel to customer and manufacturing locations.

Designs and implements mechanical retrofits, rebuilds, upgrades, and modernization solutions for packaging machinery, robotics, material handling systems, and manufacturing equipment. Responsibilities include field assessments, mechanical design, engineering documentation, troubleshooting integrated mechanical and controls systems, commissioning, root cause analysis, and manufacturing support. The role requires collaboration with customers, field service, operations, maintenance, and engineering teams, plus frequent travel to customer and manufacturing sites.

Develop and optimize low-level systems software using C++ and Python. Design networking components, socket communications, and protocol resolvers; implement algorithms and performance improvements; create unit, integration, and stress tests; debug memory, networking, and concurrency issues with GDB and Wireshark; and collaborate on modular codebases and release version control.

Architects high-complexity electronic system solutions for clients, translating requirements into system architectures, work plans, estimates, technical proposals, and risk mitigation strategies. The role partitions systems across hardware, FPGA, embedded software, and mechanical or thermal domains; defines interfaces and performance budgets; supports client presentations and solution discussions; and contributes to project delivery, product development, and R&D investment decisions.

Design and guide secure, scalable enterprise and cloud architectures (DNS, Azure, AWS, on-prem). Lead cloud migrations, implement monitoring, integrate hybrid environments, present technical briefings, and mentor staff while ensuring security and performance for a mission-focused government client.

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.

Supports managed-services customer onboarding and systems implementation. Installs and configures software, servers, workstations, monitoring, logging, antivirus, and security tools; supports Windows, Active Directory, Microsoft 365, Entra, Intune, backups, upgrades, and deployments. Maintains documentation and works directly with customers remotely and onsite to troubleshoot and deliver implementations. The role is focused on desktop and server technologies and requires approximately 30–40% travel.

Owns the technical roadmap for hyperscale AI infrastructure and GPU-cluster solutions involving CPO, silicon photonics, optical interconnect, networking, and compute architectures. Evaluates industry technology and competitive roadmaps, guides R&D priorities, develops ecosystem partnerships, advises leadership, and represents the company at conferences, standards bodies, and co-innovation forums. The role requires strong systems expertise, executive communication, external influence, and strategic technology forecasting.

Owns the technical roadmap for hyperscale AI cluster solutions spanning CPO, silicon photonics, optical interconnect, networking, and compute architectures. Tracks GPU, switching, and photonics ecosystems; advises R&D and executives on technology strategy, partnerships, and competitive positioning; represents the company at conferences, standards bodies, and co-innovation forums; and delivers technical presentations and keynotes. The role requires deep systems expertise, ecosystem relationships, strategic leadership, and significant external engagement.

Leads software engineering projects and developers while designing cloud-based, full-stack solutions. Uses IBM z/OS, Scheduler, DB2, COBOL, and JCL to stabilize and modernize mainframe systems for cloud migration. Develops with multiple programming languages, databases, Docker, Kubernetes, and AWS technologies. Provides technical leadership, establishes engineering standards, partners with architects, improves system performance, reduces technical debt, mentors engineers, and drives large-scale Agile initiatives.

Designs, deploys, troubleshoots, and validates network and Microsoft 365 infrastructure projects. Responsibilities include firewall, switch, wireless, VLAN, VPN, UniFi, cloud migration, identity, MFA, and infrastructure cutover work. The role performs pre-staging, maintenance-window implementations, post-deployment validation, troubleshooting, rollback support, and detailed technical documentation while working independently and directly with clients.

Leads architecture, engineering, security, integration, deployment, and sustainment of the Informatica Data Governance Suite in AWS GovCloud. Designs high availability, disaster recovery, Infrastructure as Code, CI/CD, monitoring, identity, security, and compliance capabilities. Coordinates Informatica, cloud, database, cybersecurity, and testing teams; supports RMF/ATO and STIG activities; reviews technical artifacts; manages risks; and transfers operational knowledge to government personnel.

Integrates and tests complex hardware, software, and firmware systems from design through aircraft installation. Develops test plans, procedures, automation, scripts, and reports; executes integration, verification, qualification, and environmental testing in system integration labs or offsite locations. Troubleshoots production systems, collaborates across disciplines, presents technical results, and supports systems engineering activities throughout the product lifecycle.