Staff Heat Exchanger Design Engineer

Karman Industries; Los Angeles (CA); On-site; USD 150,000 - 210,000; Full time

Benefits offered by this job

Stock options

Medical, vision & dental coverage

401(k) retirement plan

Job summary

Karman Industries seeks a Lead Engineer to drive the design, development, and qualification of CO₂ heat exchangers, including PCHEs, gas coolers, and electronics cooling. The role combines hands‑on technical leadership with individual contribution, setting direction and collaborating with manufacturing to move designs from prototype to high‑volume production.

Responsibilities include leading prototype‑to‑production processes, model development, supplier selection, and design reviews, while

Qualifications

• 10+ years of heat exchanger design experience, from concept to fielded product.
• Strong thermodynamics and two‑phase/supercritical flow knowledge.
• Experience with compact heat exchangers (PCHE, microchannel, plate‑fin, brazed).
• Knowledge of high‑pressure design codes and pressure equipment compliance.
• Experience transitioning designs from prototype to volume production.
• Ability to lead in fast‑growth/scale‑up environments.
• Demonstrated technical leadership and cross‑team alignment.
• Ability to work onsite in the Los Angeles area.

Responsibilities

• Own thermal and hydraulic design of CO₂ heat exchangers across full operating envelope.
• Evaluate exchanger technologies for each duty based on performance, cost, size, weight, manufacturability.
• Lead electronics cooling and cold plate design and integration with cooling loop.
• Develop and validate rating and sizing models; link to cycle COP and facility efficiency.
• Guide prototype‑to‑production process: specs, supplier selection, design reviews.
• Collaborate with manufacturing and suppliers to scale production and ensure manufacturability.
• Own pressure equipment compliance (ASME VIII, ASME B31.5, CO₂ refrigerant requirements).
• Design for field conditions: shipping, packaging, transients, fouling, serviceability.
• Support customer discussions on exchanger performance and design choices.
• Recruit and mentor engineers; establish engineering standards for heat exchanger team.

Skills

Heat exchanger design

Thermodynamics

PCHE/microchannel/plate-fin

High‑pressure design codes

Manufacturing collaboration

On-site engineering in LA

Education

MS or PhD in mechanical/thermal/chemical engineering

Tools

CFD

FEA

Python modeling

Job description

Karman Industries

Founded in 2024 and headquartered in Gardena, California, Karman Industries is at the forefront of revolutionizing industrial thermal energy. Our mission is to electrify global thermal systems across data centers, manufacturing, and energy industries. Karman is developing the revolutionary Heat Processing Unit (HPU) to reinvent thermal handling for giga-scale data centers & AI factories. The HPU is built around a supercritical CO2 chiller system utilizing a high-speed electrically driven turbomachinery core. Our system aims to reduce energy consumption in data center thermal management by greater than 25% and increase energy density by 10x.

At Karman Industries, we are committed to fostering a dynamic and inclusive work environment where innovation thrives. Our team is composed of passionate professionals dedicated to making a tangible impact on the future of industrial manufacturing. Join us in our mission to transform the industry and contribute to a more sustainable world.

Lead Engineer, Heat Exchangers

Karman Industries is seeking an engineer to lead the design, development, and qualification of the heat exchangers in our CO₂ heating and cooling systems. The scope includes compact, high-pressure CO₂ exchangers such as printed circuit heat exchangers (PCHEs), along with the gas coolers and heat rejection equipment around them. The role also covers electronics cooling, including cold plate design. The role starts with our pilot CO₂ heat exchanger and PCHE prototype program and carries that work through to production-ready designs.

Karman is seeking both a hands‑on technical leadership and individual contributor role. Successful candidates will do the engineering directly, set technical direction for the heat exchanger program, and build a small team as the company scales. Close collaboration with manufacturing is central to the role, as the designs must move from prototype to high‑volume production.

Responsibilities

• Own the thermal and hydraulic design of CO₂ heat exchangers across the full operating envelope, including transcritical operation and the near‑critical region, where thermophysical properties change rapidly.
• Evaluate and select exchanger technologies (PCHE, microchannel, plate‑fin, brazed plate, and shell‑and‑tube) for each duty, weighing thermal performance, cost, size, weight, and manufacturability.
• Lead electronics cooling and cold plate design, including thermal and hydraulic performance, flow distribution, and integration with the facility cooling loop.
• Develop and validate rating and sizing models, and work with the system modeling team so that exchanger performance is carried accurately into cycle COP and facility efficiency.
• Lead the prototype‑to‑production process, including specifications, supplier selection, design reviews, test plans, and acceptance criteria.
• Work closely with internal manufacturing and exchanger suppliers to scale production, driving design for manufacturability, process qualification, cost, lead time, and quality.
• Own pressure equipment compliance for the heat exchangers, including ASME Section VIII, ASME B31.5, and applicable CO₂ refrigerant system requirements.
• Design for field conditions, including shipping envelope, skid packaging, thermal transients, fouling, freeze and dry‑out risk, and serviceability.
• Support customer and partner technical discussions on exchanger performance and design decisions.
• Leadership role will need to recruit and mentor engineers, and establish engineering standards for the heat exchanger team.

Required Qualifications

• 10+ years of heat exchanger design experience, with a demonstrated record of taking designs from concept to fielded product.
• Strong command of thermodynamics, heat transfer, and two‑phase and supercritical fluid flow.
• Direct experience with compact heat exchangers (PCHE, microchannel, plate‑fin, or brazed construction).
• Working knowledge of high‑pressure design codes and pressure equipment compliance.
• Experience working directly with manufacturing to transition designs from prototype to volume production.
• Experience in a fast‑growing or scale‑up environment with broad individual ownership and limited established process.
• Demonstrated technical leadership: setting direction, making sound decisions with incomplete information, and building alignment across teams.
• Ability to work onsite in the Los Angeles area.

Desired Skills and Experience

• Background in HVAC&R, data center cooling, power generation, cryogenics, or aerospace thermal systems.
• Experience with CO₂ (R744) systems, transcritical cycles, or supercritical CO₂ equipment.
• Experience with electronics thermal management, including liquid cold plates for high‑power processors or power electronics.
• Experience qualifying new suppliers and manufacturing processes.
• Advanced degree (M.S. or Ph.D.) in mechanical, thermal, or chemical engineering.
• Experience developing engineering analysis tools, including CFD, FEA, and Python‑based modeling.

Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case‑by‑case basis and may vary based on job‑related skills, education, experience, technical capabilities and internal equity. In addition to base salary, for full‑time hires, you may also be eligible for long‑term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.

Karman Industries is an Equal Opportunity Employer; employment with Karman Industries is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.