Thermal Systems Engineer

Company MissionQuilt's company mission is to move humanity off of fossil fuel heating. 20% of US global warming emissions come from homes (that's more than cars!). The largest driver of home emissions is burning fossil fuels for heat. To stop climate change, over 80M US homes need to transition from combustion to efficient, electric heat pumps over the coming decades.We believe for this to happen the world needs fantastic products that are easy and desirable to purchase. Today's heat pumps lack great design, make limited use of software, and are difficult and stressful to adopt. We are building a next generation, beautifully designed, smart home heating and cooling system that is 10x better than what is on the market today.RoleQuilt is hiring a Thermal Systems Engineer to optimize deployed systems and support development of our next generation systems. This is an excellent opportunity for an early-career engineer to dive deep into real-world applications of a thermal system, gain testing, analysis and system design skills while contributing to products that combat climate change.You will work closely with our thermal and cross-functional teams to conduct thermal testing, analyze system performance, develop thermal models, and support the design of next-generation HVAC products. The ideal candidate has strong thermal engineering fundamentals, is eager to learn, and is excited about applying their skills to real-world climate solutions.Minimum QualificationsBachelor's degree in Mechanical Engineering, Aerospace Engineering, or related field with coursework in thermodynamics, heat transfer, and fluid mechanicsUnderstanding of fundamental thermal engineering principles including refrigerant cyclesFamiliarity with refrigerant system components, key process parameter, and common failure modesBasic familiarity with data analysis and visualization using Python, MATLAB, or similar toolsStrong problem-solving skills and ability to work through technical challenges methodicallyExcellent communication skills and ability to document technical work clearlyAbility to communicate with non-technical stakeholders, such as customer support representatives and HVAC techniciansSelf-motivated with eagerness to learn and take on new challengesPassion for electrification, energy efficiency, and home automationStrong mission alignment around climate and decarbonizationPreferred QualificationsExperience involving thermal testing, temperature measurement, or thermal system designHands-on experience with thermal instrumentation (thermocouples, anemometers, manometers, infrared cameras)Some exposure to thermal modeling or simulation tools (ANSYS, Dymola, GT-Suite, COMSOL, or similar) through coursework or projectsExposure to manufacturing processes and design for manufacturing principlesExperience with CAD software for thermal designFamiliarity with heat pumps, or HVAC systemsResponsibilitiesAnalyze system telemetry to root cause field issues and propose improvements to the productWork cross-functionally to develop continuous monitoring and automated alerting tools based on field dataPerform root cause analysis on units returned from the fieldConduct validation testing of products in development and support regulatory testingSupport thermal analysis and modeling efforts to predict real world performance and validate system healthAnalyze test data and present findings to inform design decisions and product improvementsCollaborate with mechanical, electrical, and manufacturing teams to ensure thermal requirements are met throughout the product development cycleCompensation & BenefitsThis is a full-time, onsite position in our Redwood City office with an expected salary range of $120,000 - $130,000, depending on experience. In addition to base salary, Quilt also offers meaningful equity and top-tier health benefits.Relocation assistance is not available for this role.Apply NowDon't meet 100% of the requirements? That's okay, apply anyways! If you're excited about this role and think you could bring something unique to the team, we encourage you to apply-even if your experience doesn't match perfectly. We'd love to hear from you.About QuiltAt Quilt, we're on a mission to make clean, efficient heating and cooling accessible to everyone - and we know that heat pumps can play a big role in creating healthier, more climate-resilient homes. But the reality is, climate change and outdated energy systems don't impact everyone equally. That's why we're building a diverse, inclusive team - because we believe the best solutions come from people with different lived experiences and perspectives. We welcome teammates of all races, ethnicities, genders, identities, abilities, and backgrounds, and we're committed to creating a workplace where everyone feels empowered to shape the future of climate tech.Need accommodations during the hiring process? No problem - just let us know. We're here to support you. Email accessibility@ to make your request.

Created: 2026-04-02