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Signal Engineer Jobs in Chicago, IL (NOW HIRING)

Koch Industries

Sr. Signal Integrity Engineer

Lisle, IL · On-site

$164K/yr

Your Job We are seeking a highly skilled Senior Signal Integrity (SI) Engineer to lead the measurement, analysis, and validation of high-speed digital and RF interconnects, including connectors ...

Amphenol HSIO

Signal Integrity Engineer

Schaumburg, IL · On-site

$100K - $150K/yr

Signal Integrity Engineer Location: Schaumburg, IL Amphenol High Speed Products Group is the market leader for high-speed, high-bandwidth electrical connectors for the Telecom/Datacom market (Mobile ...

Amphenol HSIO

Signal Integrity Engineer

Schaumburg, IL · On-site

$100K - $150K/yr

Signal Integrity Engineer Location: Schaumburg, IL Amphenol High Speed Products Group is the market leader for high-speed, high-bandwidth electrical connectors for the Telecom/Datacom market (Mobile ...

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All JobsSignal Engineer JobsSignal Engineer Jobs in Chicago, IL

Signal Engineer information

See Chicago, IL salary details

$36.6K

$99.1K

$173.2K

How much do signal engineer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for signal engineer in Chicago, IL is $99,082.00, according to ZipRecruiter salary data. Most workers in this role earn between $82,500.00 and $111,300.00 per year, depending on experience, location, and employer.

What is a signal engineer?

Signal Engineers are professionals who design, install, maintain, and troubleshoot signaling systems that control train movements on railway networks. Their work ensures the safe and efficient operation of trains by managing signals, track circuits, and interlocking systems. Signal Engineers work closely with other railway professionals to implement modern signaling technology and comply with safety standards. They may also be involved in upgrading existing infrastructure or developing new systems for improved reliability and capacity.

What are some common challenges signal engineers face when working on railway or transportation projects?

Signal Engineers often encounter challenges such as integrating new signaling systems with legacy infrastructure, adhering to strict safety and regulatory standards, and coordinating with multidisciplinary teams including civil, electrical, and IT engineers. Projects may require balancing tight deadlines with the need for thorough testing and validation of signal systems to ensure passenger and worker safety. Effective communication and adaptability are essential, as priorities can shift quickly due to technical issues or changes in project scope.

What are the key skills and qualifications needed to thrive as a signal engineer, and why are they important?

To thrive as a Signal Engineer, you need a solid background in electrical or electronic engineering, strong analytical skills, and a relevant engineering degree or equivalent experience. Familiarity with signaling systems, CAD software, and industry-specific standards such as those from the Institute of Railway Signal Engineers (IRSE) or relevant certifications is typically required. Excellent problem-solving abilities, attention to detail, and effective communication help Signal Engineers collaborate and respond to safety-critical situations. These skills and qualifications are essential to ensure the safe and reliable operation of signaling systems in transportation networks.

What is the difference between Signal Engineer vs Communications Engineer?

AspectSignal EngineerCommunications Engineer
CredentialsBachelor's in Electrical/Electronic Engineering, certifications like IEEEBachelor's in Electrical, Electronics, or Communications Engineering, similar certifications
Work EnvironmentRailways, transit systems, transportation infrastructureTelecom companies, network providers, data centers
Industry UsageTransportation, infrastructure projectsTelecommunications, networking, data transmission
Job FocusDesign and maintenance of signaling systems for safety and efficiencyDesign and implementation of communication systems for data and voice transmission

While both roles require electrical engineering knowledge and similar certifications, Signal Engineers primarily focus on signaling systems in transportation, ensuring safety and operational efficiency. Communications Engineers concentrate on designing and maintaining communication networks for data and voice transmission across various industries.

How much do signal engineers make?

Signal engineers typically earn a median annual salary ranging from $70,000 to $100,000, depending on experience, location, and industry. Advanced skills in telecommunications systems, circuit design, and relevant certifications can lead to higher compensation.

What are popular job titles related to Signal Engineer jobs in Chicago, IL?

For Signal Engineer jobs in Chicago, IL, the most frequently searched job titles are:

What job categories do people searching Signal Engineer jobs in Chicago, IL look for?

The top searched job categories for Signal Engineer jobs in Chicago, IL are:

Signal Engineer jobs near you
Infographic showing various Signal Engineer job openings in Chicago, IL as of August 2026, with employment types broken down into 87% Full Time, 8% Part Time, 4% Contract, and 1% Nights. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $99,082 per year, or $47.6 per hour.

Sr. Signal Integrity Engineer

Koch Industries

Lisle, IL • On-site

$164K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 22 days ago

Key responsibilities

  • Perform high-speed electrical measurements such as insertion loss, return loss, crosstalk, mode conversion, characteristic impedance, skew, propagation delay, eye diagrams, BER, and shielding leakage using appropriate test equipment.

  • Evaluate the signal integrity and shielding effectiveness of connectors, cable assemblies, and interconnect systems for new product development and manufacturing validation.

  • Develop, validate, and execute signal integrity and shielding test methodologies aligned with industry standards, customer requirements, and regulatory specifications.

Koch Industries rating

8.0

Company rating: 8.0 out of 10

Based on 53 frontline employees who took The Breakroom Quiz

137th of 545 rated manufacturers

Job description

Your Job
We are seeking a highly skilled Senior Signal Integrity (SI) Engineer to lead the measurement, analysis, and validation of high-speed digital and RF interconnects, including connectors, cable assemblies, and related interconnect systems.
This role is critical to advancing the standardization of global SI laboratories and ensuring optimal signal integrity and shielding performance across a broad range of Molex products and applications. Responsibilities include evaluating and characterizing connectors, cable assemblies, and interconnect systems, with a focus on component performance, mated-interface performance, assembly characterization, shielding effectiveness, and the correlation of measured results with customer, regulatory, and industry requirements.
Reporting to the Senior Principal Signal Integrity Engineer, you will operate with a high degree of autonomy, driving signal integrity test development, mentoring laboratory engineers and technicians, and contributing to global engineering initiatives. You will play a key role in prototype validation, test methodology development, and the continuous enhancement of laboratory capabilities.
What You Will Do
  • Perform high-speed electrical measurements, including insertion loss, return loss, crosstalk, mode conversion, characteristic impedance, skew, propagation delay, eye diagrams, BER, and shielding leakage using VNAs, TDR/TDT systems, high-speed oscilloscopes, and BERTs.
  • Evaluate the signal integrity and shielding effectiveness of connectors, cable assemblies, interconnect systems, and communication channels for new product development and manufacturing validation.
  • Support product development through electromagnetic simulation and modeling to predict signal integrity and shielding performance.
  • Analyze and interpret S-parameters, TDR/TDT waveforms, shielding measurements, and time- and frequency-domain responses.
  • Develop, validate, and execute signal integrity and shielding test methodologies aligned with industry standards, customer requirements, and regulatory specifications.
  • Design, implement, and maintain test automation solutions using Python, MATLAB, or similar programming languages.
  • Analyze test data to identify design improvements and optimize product performance.
  • Lead troubleshooting efforts and root-cause analyses of signal integrity- and shielding-related issues.
  • Collaborate with design, simulation, and system engineering teams to optimize overall product performance.
  • Perform channel characterization and link analysis for high-speed SerDes systems.
  • Validate product performance against specifications across a wide range of high-speed signaling technologies.
  • Stay current with industry advancements and emerging technologies while leading internal signal integrity technology development initiatives.
  • Mentor engineers and technicians, promoting laboratory best practices and technical excellence throughout the organization.

Who You Are (Basic Qualifications)
  • Master's degree or Ph.D. in Electrical Engineering or a related field.
  • 8+ years of experience in high-speed signal integrity design, testing, and validation.
  • 5+ years of experience designing, characterizing, and evaluating high-speed connectors, cable assemblies, and interconnect systems.
  • Strong foundation in electromagnetic field theory, microwave engineering, transmission line theory, shielding concepts, and high-speed interconnect behavior.
  • Extensive experience performing signal integrity testing, shielding testing, and characterization of high-speed connectors, cable assemblies, and interconnect systems using TDR/TDT, VNA, oscilloscope, and BERT measurement techniques.
  • Strong analytical and troubleshooting skills with extensive hands-on laboratory experience in measurement-driven engineering environments.
  • Demonstrated success leading technical projects, mentoring engineers and technicians, establishing laboratory best practices, and contributing to technology roadmaps.

What Will Put You Ahead
  • Working knowledge of Power Integrity (PI) and EMI/EMC principles.
  • Experience with electromagnetic simulation and modeling to predict signal integrity and shielding performance.
  • Understanding of SerDes architectures, channel characterization techniques, equalization concepts, and high-speed link analysis.
  • Experience with test automation, scripting, and data management systems.
  • Experience with fixture removal and de-embedding techniques using SI data analysis tools and Touchstone (SnP) data formats.
  • Experience designing high-speed test fixtures and test boards.
  • Familiarity with high-speed modulation formats, including PAM4, PAM6, and PAM8.
  • Knowledge of applicable industry standards and specifications, including USCAR, Open Alliance, PCIe, Ethernet, USB, DDR, IEC, EIA, and CXL.
  • Ability to translate complex technical data into clear, actionable engineering recommendations.
  • Demonstrated commitment to continuous improvement and technical excellence.

For this role, we anticipate paying $110,000 - $150,000 per year. This role is eligible for variable pay, issued as a monetary bonus or in another form.
At Koch companies, we are entrepreneurs. This means we openly challenge the status quo, find new ways to create value and get rewarded for our individual contributions. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate's knowledge, skills, abilities, and geographic location. If you have questions, please speak to your recruiter about the flexibility and detail of our compensation philosophy.
Hiring Philosophy
All Koch companies value diversity of thought, perspectives, aptitudes, experiences, and backgrounds. We are Military Ready and Second Chance employers. Learn more about our hiring philosophy here .
Who We Are
At Koch, employees are empowered to do what they do best to make life better. Learn how our business philosophy helps employees unleash their potential while creating value for themselves and the company.
Our Benefits
Our goal is for each employee, and their families, to live fulfilling and healthy lives. We provide essential resources and support to build and maintain physical, financial, and emotional strength - focusing on overall wellbeing so you can focus on what matters most. Our benefits plan includes - medical, dental, vision, flexible spending and health savings accounts, life insurance, ADD, disability, retirement, paid vacation/time off, educational assistance, and may also include infertility assistance, paid parental leave and adoption assistance. Specific eligibility criteria is set by the applicable Summary Plan Description, policy or guideline and benefits may vary by geographic region. If you have questions on what benefits apply to you, please speak to your recruiter.
Additionally, everyone has individual work and personal needs. We seek to enable the best work environment that helps you and the business work together to produce superior results.
Equal Opportunities
Equal Opportunity Employer, including disability and protected veteran status. Except where prohibited by state law, some offers of employment are conditioned upon successfully passing a drug test. This employer uses E-Verify. Please click here for additional information. (For Illinois E-Verify information click here , aquí , or tu ).
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