Top Senior Systems Engineer Jobs in Chicago, IL

Maintain and improve Linux-based production systems, automate deployments with Salt and Ansible, manage containerized stacks (Docker/Kubernetes), monitor and harden systems, troubleshoot incidents, partner with engineering for maintenance, and support infrastructure components like VMWare, SAN, backups, Kafka, MongoDB, and RabbitMQ.

Lead design and implementation of data architecture and scalable storage solutions, drive AI/GenAI thought leadership, oversee data governance and security, translate business requirements into technical plans, implement FastAPI endpoints, enhance LLMs through prompt engineering, and manage cross-functional teams to deliver advanced data and AI solutions.

As a Senior Systems Engineer, you'll design high-performance data management systems, optimize for scalability, solve distributed challenges, and collaborate with the team to maintain code quality. Requires strong backend development and systems programming expertise, particularly in Rust.

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.

Lead hands-on software engineering for fixed-income trading systems spanning pre-trade, trade capture, pricing, real-time risk, and P&L. Design scalable solutions, modernize legacy systems, develop proofs of concept, and improve operational stability. Collaborate with trading, risk, and P&L teams, lead transformation initiatives, measure outcomes, and influence senior stakeholders. Drive responsible adoption of AI-assisted engineering tools, including code review, testing, troubleshooting, secure coding, and SDLC automation.

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.

The IT Systems Engineer will manage IT operations, ensure security compliance, and oversee cloud infrastructure including AWS and DigitalOcean. Responsibilities include device management, help desk support, and implementing security policies.

The Senior Systems Engineer will support sales of enterprise storage, assist with system configurations, and demonstrate technical expertise while defining product requirements and creating solution blueprints.

Lead technical aspects of radio network upgrade projects (servers, network, RF) for mission-critical public safety systems. Produce documentation, present to customers, troubleshoot IP networking and virtualization, mentor engineers, develop training materials, and manage project technical risks.

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 systems engineering for Hivemind-based autonomy products: define and manage requirements, develop system architectures and trade studies, coordinate hardware/software interfaces, support integration/verification/validation and testing, and identify and mitigate technical risks across the system lifecycle.

Lead Salesforce and billing platform engineering with an emphasis on AI-driven automation. Build scalable Salesforce solutions (Apex, Flow, LWC), pilot LLM/agent workflows, modernize CI/CD and test automation, support Quote-to-Cash and billing processes, collaborate across product and finance, drive technical debt reduction, and mentor junior engineers.

Lead Salesforce administration and Experience Cloud solutions across student-facing portals. Configure declarative automation, support integrations, manage releases and sandboxes, troubleshoot production issues, produce reports/dashboards, maintain data quality and security, translate business needs into technical designs, and drive adoption and continuous improvement.

Design, implement, and support core infrastructure with emphasis on Microsoft 365/Azure, identity, and endpoint management. Lead identity platform, Intune/Autopilot endpoint management, enterprise SSO/SCIM, Windows server maintenance, security audits, vulnerability remediation, documentation for compliance, and automation projects. Resolve advanced incidents and collaborate cross-functionally to improve reliability and deliver complex technical projects.

Lead systems integration across electronics, firmware, fluidics, and mechanical subsystems for a gut-microbiome instrument. Define and trace requirements, plan and execute V&V, perform hands-on bench bring-up and debugging, manage system-level risks, and build automated test setups, documentation, protocols, and SOPs to support development and verification.

The Sr. Systems Engineer mentors junior engineers, provides IT support, manages service tickets, maintains documentation, and adheres to change control procedures in a collaborative environment.

Lead systems engineering and sustainment for JPSS Common Ground System. Oversee software teams developing Java/JavaScript/SQL/NoSQL microservices and web services, use Cloud Foundry/Kubernetes, define MVPs and user stories with stakeholders, plan and lead verification test events, and produce NASA/NOAA systems engineering documentation and cross-functional coordination.

The Senior Systems Engineer will ensure system availability, security, and performance for a large-scale global infrastructure at Automattic, addressing system health and facilitating developer efficiency.

Administer and optimize Microsoft SQL Server databases across on-premises, Azure, and AWS. Design and support HA/DR (Always On, clustering, replication, log shipping), perform installs/patches/migrations, monitor performance and capacity, lead incident response and root cause analysis, manage backup/recovery and compliance, drive automation and operational excellence, and mentor engineering teams.

Lead architecture and engineering for global endpoint fleet across Windows and macOS. Design UEM infrastructure, automate provisioning (Autopilot, ABM), build scripts and API integrations, enforce security baselines (BitLocker, FileVault, EDR), integrate with identity providers, act as Tier 3/4 escalation, and mentor junior staff while driving roadmap and documentation.

Design, build, and maintain tools and services for Active Directory and cloud identity platforms. Implement security policies and access controls, collaborate on Azure and Google Workspace deployments, automate integrations via APIs and CI/CD, maintain runbooks, participate in on-call rotation, and support AWS infrastructure for production systems.

Develop and evaluate tactical networking requirements and algorithms, perform modeling and simulation, design systems and test procedures, integrate and prototype tactical radios, support integration/verification, and participate in customer demonstrations and test events.

Design, build, test, and maintain low-latency, high-throughput trading services on an Aeron-based platform. Expand trading protocol features, migrate workflows to the new stack, optimize performance and scalability, support production reliability, and collaborate with cross-functional teams while using AI-assisted development tools.

Lead design, implementation, and maintenance of system architectures across applications, infrastructure, and cloud platforms for federal IT modernization. Provide technical leadership, ensure performance, reliability, and integration, produce documentation, and collaborate with DevOps, security, and stakeholders within Agile teams.

Deploy, upgrade, and maintain High-Speed Data infrastructure supporting DNS, DHCP, DOCSIS provisioning and related platforms. Perform Linux (CentOS/RHEL) administration, scripting/automation (Python, Bash, Ansible, Docker), vendor management, troubleshooting, LLD documentation, project work, training, and on-call support to ensure availability and security of HSD services.