Firmware Engineer Jobs in Arkansas (NOW HIRING)

Your Job
We're seeking an experienced Systems Integration Engineer (SIE) to lead hardware validation and interoperability efforts for Active Copper Cable (ACC) and Active Electrical Cable (AEC) assemblies used in high-speed networking systems. This role is focused on systems containing embedded PCAs with DSPs, retimers, equalizers, power management, and control interfaces, integrated directly within the cable module.
In this role, you will serve as a technical authority for PCA-based cable module bring-up, debug, and system-level interoperability, working across hardware, firmware, signal integrity, and networking teams. You will drive root-cause investigations, evaluate design robustness, and help define validation best practices for electronically complex interconnects.
This position is ideal for an experienced engineer who thrives at the intersection of PCA hardware, embedded electronics, and networking system interoperability.
Our Team
Molex's Copper Solutions Business Unit (CSBU) is a global team that works together to deliver exceptional products to worldwide telecommunication and data center customers. CSBU is one of the most highly technically advanced business units within Molex. Our engineering teams design cutting edge solutions for high-speed, high-density products that maximize speed, signal integrity, and efficiency.
Why Join Us
You will be getting in on the ground floor of a booming sector inside Molex as part of a team building the infrastructure and processes that enable world-class interoperability testing. This role offers deep technical ownership, visibility into product readiness, and the opportunity to influence how embedded cable electronics interoperate at scale. You will work hands-on with advanced interconnect technology and play a key role in ensuring robust, repeatable interoperability across lab and customer environments.
What You Will Do
ACC / AEC Hardware & PCA Validation

• Lead bring-up and validation of ACC/AEC cable assemblies with embedded PCAs
• Validate DSP-, retimer-, and equalizer-based designs against electrical, functional, and interoperability requirements
• Assess PCA behavior within the cable module including power, resets, control interfaces, and signal integrity impacts
• Validate system-level interactions between cable PCAs and switches, NICs, and host platforms

Interop Debug & Root-Cause Analysis

• Lead investigation of interoperability issues involving active cable PCAs
• Perform deep lab debug across PBCA hardware, embedded firmware, signal integrity, and link training layers
• Drive root-cause analysis for link failures, marginal performance, power-up issues, and qualification escapes

Design Review & Validation Strategy

• Review PBCA schematics, layouts, and design tradeoffs impacting signal integrity, power, thermals, and reliability
• Evaluate how PBCA design decisions affect interoperability across vendor platforms
• Define validation strategies and best practices specific to PCA-based cable modules
• Capability to interpret schematics, layouts
• Familiarity with PCB tools like Cadence Allegro, Raspberry Pi and STM debuggers

Technical Leadership & Escalation Support

• Partner with firmware integration, networking, SI, and data analysis engineers
• Provide technical leadership during customer interoperability escalations
• Mentor engineers and influence validation standards across the Interop organization

Who You Are (Basic Qualifications)

• Bachelor's degree or higher in Electrical Engineering, Computer Engineering, or a related field
• Strong experience validating PBCA-based active interconnects or embedded hardware systems
• Hands-on expertise with lab debug, instrumentation, and system-level bring-up
• Proven ability to lead root-cause analysis across PCA hardware, firmware, and networking interfaces
• Strong technical communication skills and cross-team collaboration

What Will Put You Ahead

• Experience with DSP- or retimer-based cable designs
• Background in high-speed signal integrity and embedded power architectures
• Familiarity with networking interoperability and compliance environments
• Experience setting validation strategy for electronics-enabled cable products

For this role in Conway, AR - we anticipate paying $120,000 - $160,000 per year.
For this role in Lisle, IL - we anticipate paying $150,000 - $200,000 per year.
For this role in Fremont, CA - we anticipate paying $180,000 - $280,000 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
As a Koch company, Molex is a leading supplier of connectors and interconnect components, driving innovation in electronics and supporting industries from automotive to health care and consumer to data communications. The thousands of innovators who work for Molex have made us a global electronics leader. Our experienced people, groundbreaking products and leading-edge technologies help us deliver a wider array of solutions to more markets than ever before.
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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