Analog / Mixed-Signal Electrical Engineer

FieldLine Industries | Boulder, Colorado | Full-time | Onsite

FieldLine Industries develops compact, high-sensitivity quantum magnetometers and advanced sensing systems for navigation, geophysics, defense, and space applications. We build real hardware deployed in real environments including aircraft, remote sensing stations, underwater systems, and space platforms.

We are looking for a highly capable electrical engineer who enjoys solving difficult real-world problems: someone who understands why circuits work, why they fail, and how to improve them.

This role focuses on low-noise analog and mixed-signal circuit design, hardware bring-up, debugging, and system integration for precision sensing systems operating near the limits of measurement sensitivity.

You will work closely with a small technical team spanning physics, electronics, embedded systems, and sensing technologies. Engineers are expected to contribute meaningfully across disciplines.

This role carries technical ownership, and your judgment and contributions will significantly influence the systems we build.

What you will work on:

• Low-noise analog front ends
• Precision current drivers and signal chains
• Mixed-signal PCB design and layout review
• Sensor readout electronics
• EMI and grounding
• Hardware bring-up and debugging
• Design iteration from prototype through production
• Systems that must work outside the lab

What we value:

We value engineers who think critically, communicate clearly, and care deeply about building things.

We are looking for engineers who:

• Have exceptionally strong fundamentals in electrical engineering
• Understand analog electronics and mixed-signal systems
• Can reason clearly about grounding, noise, signal integrity, and real-world circuit behavior
• Are comfortable working in ambiguity and helping define requirements
• Can defend their ideas rigorously, but can change course quickly when presented with better evidence
• Continuously learn beyond their existing expertise

Some excellent engineers are early in their careers. Others have decades of experience. We care far more about capability, curiosity, rigor, engineering judgment, and the ability to learn quickly than about years served or perfectly matching a checklist.

Qualifications:

• Bachelor’s or Master’s degree in Electrical Engineering or related field
• Demonstrated ability to design, debug, and improve real hardware systems
• Strong experience with schematic capture and PCB design
• Strong analog and mixed-signal design experience
• Comfortable debugging hardware independently
• Experience designing systems intended for deployment, not just lab demonstration

Experience with magnetometers, instrumentation, precision sensing, physics-based systems, or quantum technologies is a plus, but not required.

Additional Notes:

This role is onsite in Boulder, Colorado.

We are a small technical team with high standards, low bureaucracy, and significant technical ownership.

Extended 80-hour workweeks are not the expectation here. We believe strong engineering requires clear thinking, curiosity, rigor, and sustainability over long periods of time.

Compensation: $95,000 - $140,000

Benefits include: Health, Dental, Vision insurance, 401(k) with matching, Paid time off

This position may require access to export-controlled information subject to ITAR regulations. Candidates must be U.S. citizens or lawful permanent residents eligible to access export-controlled information under U.S. regulations.