495 Results for

Principal Engineer Jobs in Illinois

Jobs

Principal Geothermal Engineer Invenergy LLC

Chicago, IL

As a Principal Geothermal Engineer, you will guide and coordinate subsurface technical efforts for the team assigned to a geothermal power plant during the execution phase, while supporting multiple projects in the development phase. Technical supervision during project execution, specifically site surveys, reservoir modelling, exploratory/production drilling, construction and commissioning phases, including travel to the project site, will also be required.

30+ days ago

Principal System Engineer Full Spectrum

Lincolnshire, IL

Full time

The Opportunity: Strategic Leadership & Client Impact: In this high-visibility role, you serve as the primary technical interface for our clients, driving Software Systems Engineering for mission-critical medical device projects: Lead & Delegate: Manage project execution by aligning client needs with team tasks and deliverables. Safety Risk Analysis: Lead planning for complex software-driven medical devices, perform top-down hazard and harm assessment working with Full Spectrum clients’ clinical tam or medical director, performing bottom-up failure analysis (FMEA) and identifying potential risk to safety.

30+ days ago

Associate Principal/Senior Plumbing Design Engineer Northern Impact

Chicago, Illinois

This person will blend advanced plumbing systems design expertise with team leadership, project delivery, construction-phase support, and exceptional client service. This is an opportunity for an established plumbing engineering leader to shape a local team, deepen client relationships, and take ownership of technically challenging work from early planning through construction.

30+ days ago

Principal Research & Development (R&D) Engineer Motorola Solutions Inc

Illinois, IL

$180,000–$250,000 / year

From pure line-of-sight to extreme non-line-of-sight, Silvus radios form a self-healing, self-forming mesh network, enabling secure and reliable connectivity, including video and high-bandwidth data. Its battle-proven StreamCaster family of MANET radios and proprietary MN-MIMO waveform provides the vital communications link for defense, law enforcement and public safety agencies around the world, and in the toughest operational environments.

30+ days ago

Principal R&D Engineer Motorola Solutions Inc

Remote

$180,000–$250,000 / year

From pure line-of-sight to extreme non-line-of-sight, Silvus radios form a self-healing, self-forming mesh network, enabling secure and reliable connectivity, including video and high-bandwidth data. D. in Electrical Engineering, Computer Engineering, or a related communication and/or engineering technology field (i.e., wireless communications, signal processing, networking, RF design, etc.).

30+ days ago

Principal Backend Engineer Parts Town

Addison, IL

$133,164.93–$179,711.01 / year

Championing best practices in modularization, API design, and event-driven architectures, you'll leverage Node.js, TypeScript, Docker, Kubernetes, and serverless technologies to create secure, high-performance services. Backend Architecture: Design scalable, cloud-native microservices and ensure seamless interoperability between platforms (eCommerce, CMS, ERP, PIM, marketing).

5 days ago

Principal Systems Engineer - Oracle CC&B Exelon Corp

Oak Brook, IL

Maintains expert knowledge of multiple technologies and its cross impact to applications across our business areas and for our customers Acts as a role model for technological innovation to drive new business opportunities and solve highly complex business problems, inclusive of partner, vendor and other IT professionals Requires expert level skill set and proficiency in multiple technical disciplines. We are a Fortune 200 company, 20,000 colleagues strong serving more than 10.7 million customers at six energy companies -- Atlantic City Electric (ACE), Baltimore Gas and Electric (BGE), Commonwealth Edison (ComEd), Delmarva Power & Light (DPL), PECO Energy Company (PECO), and Potomac Electric Power Company (Pepco).

22 days ago

Principal Engineer Digital Regulatory Assurance Life Sciences AbbVie Inc

North Chicago, IL

Applicable only to applicants applying to a position in any location with pay disclosure requirements under state or local law: The compensation range described below is the range of possible base pay compensation that the Company believes in good faith it will pay for this role at the time of this posting based on the job grade for this position. The amount and availability of any bonus, commission, incentive, benefits, or any other form of compensation and benefits that are allocable to a particular employee remains in the Companys sole and absolute discretion unless and until paid and may be modified at the Company's sole and absolute discretion, consistent with applicable law.

6 days ago

Principal AI Engineer CNA

Chicago, Illinois

$97,000–$189,000 / year

Partners closely with Architecture, Security, Cloud Engineering, and Data teams to ensure the AI engineering platform integrates with enterprise infrastructure (GCP/GKE, GitHub,JFrogArtifactory), meets regulatory and compliance requirements (AI model tracking, Sox controls), and scales to support hundreds of engineers and AI pod teams across all portfolios. Acts as the senior technical resource mentoring engineers across the organization in AI-native engineering practices — including agentic coding patterns, context engineering, prompt-to-code workflows, and AI-assisted testing — raising the floor of capability so teams become self-sustaining without ongoing coaching dependency.

3 days ago

Principal Data Engineer CNA

Chicago, Illinois

$97,000–$189,000 / year

Performs a combination of duties in accordance with departmental guidelines: Acts as the technical authority for a modernization-focused product team supporting CNA’s reinsurance, accounting, regulatory reporting, and financial data platforms across the full solution stack, including applications, integrations, data, cloud, and architecture. Serves as a senior technical authority partnering with business and technology executives to define long-term strategy, drive enterprise modernization, and ensure technology platforms enable growth, compliance, operational efficiency, and data-driven decision-making.

30+ days ago

Principal, Software Engineer 3Q Digital, Inc.

Chicago, IL

Remote

$122,000–$165,000 / year

You''ll also need enough command of the modern frontend landscape to make architectural calls that account for it (API shape, latency budgets, rendering strategy) and to hold a credible conversation with the engineers building on top of your work. Act as a technical consultant to clients: answer their questions across every part of the project, run presentations, demos, and workshops, and distill technical information for audiences from engineers to executives.

30+ days ago

Senior Principal Software Engineer, Digital Product R&D Edwards Lifesciences

Alton, Illinois

Bachelor's Degree in Computer Science or related field with 10 years of experience relevant experience or equivalent work experience based on Edwards criteria - OR - Master's Degree or equivalent in Computer Science or related field, with 8 years of experience relevant experience or equivalent work experience based on Edwards criteria. Comfortable with varying tools and technologies including C#, SQL Server, Web Services, SOA architecture, JSON/XML/XSL, JavaScript, CSS, jQuery, Visual Studio, Assembla / Git, Azure DevOps.

7 days ago

Principal Platform Security Engineer Early Warning Services, LLC

Chicago, IL

$184,000–$253,000 / year

Early Warning Services takes into consideration a variety of factors when determining a competitive salary offer, including, but not limited to, the job scope, market rates and geographic location of a position, candidate's education, experience, training, and specialized skills or certification(s) in relation to the job requirements and compared with internal equity (peers). Healthcare Coverage- Competitive medical (PPO/HDHP), dental, and vision plans as well as company contributions to your Health Savings Account (HSA) or pre-tax savings through flexible spending accounts (FSA) for commuting, health & dependent care expenses.

6 days ago

Principal Software Engineer/Architect Expert In Recruitment Solutions

Deerfield, IL

Quick Apply

Technical Leadership & Mentorship: Influence engineering teams without direct authority, mentor senior engineers and technical leads, and raise the overall technical capability and engineering quality of the organization. Job Responsibilities Architecture & Engineering: Lead architecture and system design for complex digital initiatives across web, mobile, APIs, and backend services, while staying hands-on through coding, code reviews, technical spikes, and proof-of-concepts.

10 days ago

TCS/Walgreens - Principal Software Engineer/Architect SOMERSET STAFFING

Deerfield, IL

Quick Apply

This is a hands-on technical leadership role focused on architecture, software engineering, technical problem solving, and engineering excellence across complex, high-impact initiatives. The role will influence technical direction across teams and help deliver scalable, secure, reliable, and high-performing digital experiences.

13 days ago

Principal Engineer, R&D - Thermoforms Kraft Heinz

Glenview, Illinois

$104,200–$130,200 / year

Support external collaboration activities across the value chain (e.g., resin, coating, material suppliers; universities; institutes; start-ups; open innovation networks; scouting partners, industry partnerships) by coordinating samples/trials, tracking actions, and documenting outcomes. Our hybrid model provides flexibility based on business needs, allowing employees to work virtually up to two days per week, with an expectation to work on-site at least three days per week at the Glenview Innovation Center (Chicago, IL).

4 days ago

Principal Engineer Software - Storage (Chronosphere) Palo Alto Networks Inc

Chicago, IL

$147,000–$237,500 / year

Our platform ingests and analyzes high-volume telemetry data - metrics, logs, traces, and events - enabling our customers to understand system behavior, improve reliability, and reduce MTTR across modern cloud-native environments. For candidates who receive an offer at the posted level, the starting base salary (for non-sales roles) or base salary + commission target (for sales/com-missioned roles) is expected to be the annual range listed below.

30+ days ago

Principal System Engineer Full Spectrum Software

Lincolnshire, IL

The Opportunity: Strategic Leadership & Client Impact: In this high-visibility role, you serve as the primary technical interface for our clients, driving Software Systems Engineering for mission-critical medical device projects: Lead & Delegate: Manage project execution by aligning client needs with team tasks and deliverables. Safety Risk Analysis: Lead planning for complex software-driven medical devices, perform top-down hazard and harm assessment working with Full Spectrum clients' clinical tam or medical director, performing bottom-up failure analysis (FMEA) and identifying potential risk to safety.

30+ days ago

Principal Systems Engineer/PDO Baxter

Round Lake, Illinois

$112,000–$154,000 / year

The Principal Systems Engineer will serve as a Product Design Owner (PDO) responsible for technical owner for the design, risk and integration of infusion pump systems and/or projects, which combine electro-mechanical hardware, embedded software, and user interface components, as well as the interface with other related EM and/or digital products. The PDO drives design decisions, manages design control activities, may be accountable for a product risk file, and collaborates across engineering disciplines and cross-functions to deliver robust, reliable, safe and innovative infusion therapy solutions.

30+ days ago

Associate Principal / Senior Mechanical Design Engineer Interface Engineering

Chicago, Illinois

As a 100% employee-owned firm, we’re proud to offer our Collaboration from Home policy—giving you the flexibility of a hybrid schedule (2 days in-office per week minimum) while staying connected to a team that values innovation, inclusion, and impact. Our staff is empowered to design community service programs (e.g., clean up beaches, serve meals at shelters, tutor school-aged children, etc.) – using paid volunteer time.

30+ days ago

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Principal Engineer Jobs in Illinois

Principal Geothermal Engineer Invenergy LLC

Principal System Engineer Full Spectrum

Associate Principal/Senior Plumbing Design Engineer Northern Impact

Principal Research & Development (R&D) Engineer Motorola Solutions Inc

Principal R&D Engineer Motorola Solutions Inc

Principal Backend Engineer Parts Town

Principal Systems Engineer - Oracle CC&B Exelon Corp

Principal Engineer Digital Regulatory Assurance Life Sciences AbbVie Inc

Principal AI Engineer CNA

Principal Data Engineer CNA

Principal, Software Engineer 3Q Digital, Inc.

Senior Principal Software Engineer, Digital Product R&D Edwards Lifesciences

Principal Platform Security Engineer Early Warning Services, LLC

Principal Software Engineer/Architect Expert In Recruitment Solutions

TCS/Walgreens - Principal Software Engineer/Architect SOMERSET STAFFING

Principal Engineer, R&D - Thermoforms Kraft Heinz

Principal Engineer Software - Storage (Chronosphere) Palo Alto Networks Inc

Principal System Engineer Full Spectrum Software

Principal Systems Engineer/PDO Baxter

Associate Principal / Senior Mechanical Design Engineer Interface Engineering

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