Top Principal Engineer Jobs in Chicago, IL

The Sr. Electrical Compliance Engineer ensures regulatory approval for Dyson's products, manages local approvals, and collaborates with RDD teams for regulatory compliance, while maintaining stakeholder relationships.

Lead enterprise platform strategy and architecture for cloud, data, and AI platforms (Fabric, Databricks, Synapse, OpenAI/Foundry). Own platform lifecycle, establish standards and guardrails, drive modernization and cost optimization, influence governance, mentor senior engineers, and partner with executives to translate strategy into platform capabilities.

Lead the architectural evolution from monolithic applications to distributed systems. Define service boundaries, establish architectural standards, shape technical roadmaps, and ensure platform scalability, resilience, and maintainability. Collaborate across engineering teams, solve complex technical challenges, mentor engineers, and influence organizational direction through high-impact architectural decisions.

Develop low-level, high-performance instrumentation within CICS and z/OS using HLASM. Design production features for mission-critical mainframe environments, diagnose complex system behavior through dumps and traces, analyze performance bottlenecks, and collaborate with an experienced engineering team. The role requires deep z/OS and CICS internals expertise, systems programming knowledge, and proficiency with JCL, SDSF, and USS.

Leads enterprise API platform engineering across Apigee and Apollo GraphQL. Designs secure, scalable gateway solutions; drives Apigee modernization and cloud-native adoption; establishes GraphQL architecture and governance; implements API security; automates deployments with Kubernetes, Helm, Ansible, and CI/CD; improves reliability through observability, incident response, performance tuning, and capacity planning; and mentors engineering teams.

Lead design and prototyping of generative AI experiences for autonomy development; drive UX for Hivemind products; perform user research, collaborate with CTO and product leads, and deliver reference implementations and integrations across full-stack web and edge systems.

Leads the design, integration, implementation, commissioning, and lifecycle improvement of enterprise OT, telemetry, and SCADA solutions across global data centers. Translates operational and customer requirements into secure, scalable architectures; integrates field devices, BMS/EPMS, Ignition, Azure services, messaging, APIs, and data platforms; troubleshoots multidisciplinary issues; leads testing and modernization; and mentors engineers and stakeholders.

Leads automation and capital projects from concept through commissioning, manages engineering teams and multimillion-dollar budgets, and establishes regional standards for controls, architecture, integration, and cybersecurity. Drives Industry 4.0 initiatives including IIoT, MES connectivity, and advanced analytics. Provides technical mentorship, oversees vendors and contractors, governs schedules and costs, and serves as the senior authority for design reviews, code approvals, system integration, and complex troubleshooting.

Leads the roadmap, architecture, security, and organizational adoption of CI/CD and release infrastructure. Designs scalable release gates, hardens supply chains, directs engineers through complex projects, manages severe incidents, and drives cross-functional technical alignment. The role remains hands-on through code reviews, prototyping, debugging, documentation, mentorship, and design reviews while primarily achieving impact through team leadership.

Design, build, and operate distributed storage and file-system platforms for cloud-scale AI training and inference. Architect storage and caching for Kubernetes and GPU workloads, improve performance, reliability, observability, and resiliency, diagnose cross-layer production issues, and lead architecture reviews. Partner across infrastructure, networking, operating systems, and AI platform teams while mentoring engineers and shaping long-term storage strategy.

Lead the architecture, technical strategy, and roadmap for Microsoft's Windows ML compiler stack. Design high-performance compiler infrastructure, execution engines, optimization frameworks, and developer tools supporting CPU, GPU, and NPU workloads. Drive NPU enablement, graph optimization, scheduling, memory management, code generation, and hardware abstraction. Partner with silicon vendors and internal teams, influence AI hardware and platform strategy, lead cross-team initiatives, and mentor engineers developing on-device and generative AI capabilities.

Own the architecture and technical direction of NodeZero’s database platform. Design scalable PostgreSQL and graph-based data systems, multi-tenant schemas, partitioning, replication, indexing, and zero-downtime migrations. Establish database standards, governance, performance practices, and migration tooling while writing production code. Mentor engineers, lead architecture reviews, and collaborate across data, inventory, API, and security teams to ensure reliable, isolated, and scalable data infrastructure.

Design, develop, customize, and administer ServiceNow ITSM applications. Build scripts, workflows, interfaces, reports, and dashboards; integrate ServiceNow with external systems using REST and SOAP. Provide troubleshooting and end-user support, analyze requirements, improve processes, and support testing and deployments. Serve as a senior technical authority by leading customer engagements, technical documentation, demonstrations, innovation initiatives, stakeholder collaboration, and mentoring junior staff.

Designs, develops, tests, and supports digital hardware products across the full lifecycle. Responsibilities include FPGA and circuit-card design, digital circuit simulation, schematic capture, prototyping, debugging, integration, verification, and translating system specifications into hardware requirements and test plans. The role also involves project leadership, cross-functional collaboration, documentation control, and support for electronic warfare, communications, radar, sensing, and embedded processing systems.

Technical individual-contributor leader designing and architecting cloud-native, microservices-based payment systems. Partners with product, mentors engineers, drives CI/CD, automated testing, and operational readiness while ensuring security, scalability, and cross-functional alignment within FinTech.

Work with customers and cross-functional teams to design, build, and deliver cloud-based solutions. Lead design, identify dependencies, mentor engineers, act as DRI and on-call, and improve availability, reliability, observability, and performance. Contribute to open-source assets and collaborate with Microsoft product teams to produce extensible, maintainable code and scalable solution patterns.

Design and develop power conversion architectures and switch-mode power supplies for defense electronics, including RF, electro-optical, embedded processing, and control systems. Lead designs from requirements and circuit architecture through schematic capture, prototyping, SPICE simulation, verification, qualification, integration, and production. Collaborate with system and hardware engineers, support EMI/EMC and environmental compliance, maintain technical documentation, and lead or mentor engineering team members.

Own the architecture, implementation, and operational excellence of major Azure Boost DPU software components. Develop low-level systems software spanning operating systems, virtualization, networking, storage, device management, and hardware interfaces. Lead complex cross-functional initiatives, optimize hyperscale performance and reliability, resolve system-level issues, establish engineering practices, influence platform architecture, and mentor engineers across Azure infrastructure teams.

Lead architecture and hands-on development for Microsoft's virtualization platform, focusing on hypervisor and VMM capabilities. Design, implement, and optimize systems software across Windows, Linux, macOS, Azure, and containers. Improve performance, security, reliability, testing, and operational readiness; diagnose low-level hardware/software issues; enable virtualization on new silicon; mentor engineers; and influence platform strategy across teams and hardware partners.

Lead development of a massively distributed edge compute platform. Design fault-tolerant systems, external APIs, high-throughput traffic routing, and Kubernetes-based resource management. Establish architecture standards, reliability metrics, security practices, and technical governance. Collaborate with AI/ML, hardware, networking, and security teams; communicate risks to executives; manage customer requirements; review code; and mentor engineers on distributed systems best practices.

Lead design, development, and operation of highly available AKS Resource Provider and control-plane services. Drive cluster lifecycle, upgrades, networking, security, scalability, observability, resiliency, and incident prevention for large-scale distributed cloud systems. Collaborate across Azure engineering teams, lead architectural decisions, improve tooling and automation, troubleshoot production issues, and mentor engineers while supporting reliable Kubernetes workloads across cloud and edge environments.

Lead the architecture, development, testing, and deployment of hyperscale distributed storage systems optimized for AI and machine learning workloads. Drive innovations in scalability, performance, security, durability, and efficiency while collaborating with AI researchers and cloud infrastructure teams. Mentor engineers, guide technical strategy, and help shape Azure Blob Storage into an AI-native platform supporting zettabyte-scale storage.

Principal Software Engineer responsible for operating and improving business-critical data pipelines and infrastructure. Duties include developing monitoring, alerting, logging, CI/CD workflows, scalable data integrations, automated testing, deployment automation, and production support. The role troubleshoots workflow failures, data-quality issues, performance bottlenecks, and infrastructure incidents while collaborating with data engineers, platform engineers, and architects. Preferred experience includes Databricks, Spark, AWS, Terraform, Unity Catalog, Delta Lake, observability, identity management, and enterprise data platform governance.

Design, develop, and operate highly scalable and resilient Azure VM Scale Set cloud services. Own features from architecture through deployment and operations, solve distributed-systems challenges at hyperscale, and drive reliability, security, performance, disaster recovery, testing, monitoring, automation, and engineering best practices. Collaborate across teams to deliver platform capabilities and customer outcomes.

Design, build, test, deploy, and operate scalable, secure Azure networking software and automation tools. Act as DRI, monitor production, troubleshoot incidents, run root-cause analysis, and drive reliability, performance, and cost improvements. Collaborate with PMs and architects, participate in design/code reviews, mentor engineers, and champion security, privacy, and compliance.