Senior Technical Project Manager - Propulsion, Mechanical and Thermal Engineering

Astranis is at the forefront of satellite technology, creating advanced satellites that extend humanity’s reach into the cosmos. Our satellites are designed to provide dedicated, secure networks for discerning clients worldwide, including major corporations, government agencies, and the US military. With five satellites currently in orbit and several more sc…

About Our TeamAt OpenAI, our Hardware team is dedicated to innovating system-level and silicon solutions tailored for the demanding requirements of cutting-edge AI applications. We seamlessly integrate mechanical, thermal, electrical, and systems engineering to transform high-performance, mission-critical hardware from initial design to mass production.We collaborate closely with design engineers, operations, TPM, and external manufacturing partners, ensuring that our AI infrastructure is not only reliable and efficient but also designed for scalability.About the RoleWe are seeking a seasoned Manufacturing Engineer to spearhead thermal-mechanical manufacturing projects throughout the lifecycle of next-generation AI hardware systems. In this pivotal role, you will be responsible for driving the design, validation, and quality strategies of manufacturing processes from concept to mass production.You will engage cross-functionally with mechanical, thermal, electrical, and systems engineers to ensure our data center hardware platforms meet stringent performance, reliability, and scalability standards at both the component and rack levels. This position demands strong analytical skills, hands-on manufacturing experience, and the ability to thrive in a fast-paced, interdisciplinary environment.This role is based in San Francisco, CA, operating under a hybrid work model of three days in the office each week. We also offer relocation assistance to qualified new hires.Key ResponsibilitiesLead thermal-mechanical manufacturing and quality initiatives to guarantee product success from concept through launch and high-volume production.Own the manufacturing process design for next-generation AI hardware systems, collaborating with engineering, operations, TPMs, suppliers, and external partners.Work cross-functionally to design and optimize mechanical and thermal solutions for large-scale data center deployment.Design and validate manufacturing processes for chassis, enclosures, cooling systems, and high-power connections, aligning with performance and reliability standards.Conduct hands-on DFM/DFx analysis across design, development, prototyping, testing, and production phases.Research and implement automation techniques to enhance manufacturing efficiency and scalability.Define and manage manufacturing requirements, scope, schedules, and deliverables in collaboration with both internal and external stakeholders.Partner with suppliers to develop validation plans that ensure reliability and performance criteria are met.

Astranis is at the forefront of satellite technology, creating advanced satellites designed for high orbits that extend humanity's reach into the solar system. Currently, our satellites deliver dedicated, secure networks to a diverse range of sophisticated clients, including large enterprises, sovereign governments, and the U.S. military. With five satellites successfully in orbit and numerous launches planned, we manage a backlog exceeding $1 billion in commercial contracts.As the preferred satellite communications partner for clients with rigorous demands for uptime, data security, network visibility, and customization, Astranis has attracted over $750 million from some of the world's leading investors, including Andreessen Horowitz, Blackrock, and Fidelity. Our dynamic team of 450 engineers and entrepreneurs operates from our expansive 153,000 sq. ft. headquarters in Northern California.Senior Thermal EngineerAs a Senior Thermal Engineer at Astranis, you will play a pivotal role in designing, evaluating, and testing thermal solutions that range from electronic chips to comprehensive spacecraft thermal vacuum assessments. A strong background in problem-solving and practical testing skills is essential. While experience in spacecraft or printed circuit board thermal mitigation is advantageous, it is not a prerequisite.Role ResponsibilitiesIdentify and refine feasible thermal architectures, advancing designs through conceptual, preliminary, and detailed phases using a combination of passive and active thermal control techniques.Lead design trades that effectively balance performance margins, resource utilization, risk, cost, and scheduling.Conduct thermal analyses with varying levels of fidelity on diverse hardware types, including propulsion components, batteries, high-powered electronics, RF components, mechanisms, and printed circuit boards (PCBs).Design, evaluate, procure, and test thermal solutions, including heaters, heat pipes, thermal interface materials, and surface coatings.Create processes and procedures for the integration and assembly of thermal systems to ensure adherence to design intent. Collaborate closely with the integration and test team during the installation of thermal hardware.Plan and oversee thermal vacuum testing and verification at both the component and spacecraft levels.Mentor and support junior engineers, fostering their professional development.Assist in recruiting, interviewing, and onboarding new team members as we expand rapidly.

At Mechanize, we specialize in developing reinforcement learning (RL) environments that empower AI models to execute real-world tasks efficiently. Our mission is to drive the complete automation of the economy, providing innovative solutions to leading AI laboratories. Discover more about our work at mechanize.work.As a Senior Software Engineer at Mechanize, you will contribute to the creation of RL environments that are pivotal in the field of AI model training. Ideal candidates will have 2-5 years of software engineering experience with proficiency in Python programming. Previous experience in machine learning or AI is not a prerequisite.For insights on our interview process, visit: Interview Process at Mechanize.

Join mechanize as a Senior Software Engineer, where you'll contribute to innovative software solutions that shape the future of technology. In this role, you will lead projects, mentor junior developers, and collaborate with cross-functional teams to deliver high-quality software products. Your expertise will drive architectural decisions and enhance our development processes.

Astro-Mechanica is seeking a Senior Propulsion Development Engineer in San Francisco. This position centers on developing advanced propulsion systems for aerospace applications. Role overview The Senior Propulsion Development Engineer leads projects focused on new propulsion technologies. Work involves collaborating with teams from different disciplines to move designs from concept to implementation. The role requires hands-on involvement in both technical development and project leadership. Key responsibilities Guide the design and development of propulsion systems for aerospace use Lead and coordinate engineering projects with cross-functional teams Apply advanced technologies to meet evolving industry requirements Location This role is based in San Francisco.

astro-mechanica is hiring a Senior Thermal Systems Design Engineer in San Francisco. This position focuses on designing and improving thermal systems for advanced technology projects. Role overview Work closely with a team to develop efficient and sustainable thermal solutions. The role centers on addressing the challenges of complex, high-performance applications, ensuring systems meet demanding technical requirements. Key responsibilities Design and refine thermal systems for advanced technology products Collaborate with engineers and project teams to deliver effective solutions Support the development of sustainable approaches for thermal management Requirements Experience in thermal systems design Ability to work collaboratively on technical teams Strong problem-solving skills in engineering environments

Astranis is looking for a Senior Propulsion Engineer to lead the design, construction, and testing of propulsion systems for its advanced satellites in San Francisco. This position plays a key part in developing new propulsion solutions and improving system performance for high-orbit missions. What you will do Drive the full lifecycle of propulsion system development, from initial design through build and testing. Develop new solutions to enhance propulsion system performance for Astranis satellites. Mentor and guide junior engineers on technical projects and day-to-day work. Support the assembly and production of satellites that expand network access to underserved regions. Role focus This role centers on hands-on engineering and technical leadership. The Senior Propulsion Engineer’s work has a direct impact on the reliability and performance of satellites that serve commercial, government, and military clients.

About the Role HeartFlow, Inc. is hiring a Senior Technical Project Manager in San Francisco, California. This position leads the planning, execution, and delivery of technical projects that support the company’s cardiac solutions. The Senior Technical Project Manager works closely with cross-functional teams, ensuring projects stay on schedule, within scope, and meet HeartFlow’s quality standards.

Astranis is at the forefront of expanding humanity’s presence beyond Earth through the development of advanced satellites designed for high orbits. Our satellites facilitate dedicated and secure networks for a diverse clientele, including major enterprises, governmental agencies, and the United States military. With five satellites currently in orbit and a robust pipeline, we are addressing a substantial backlog exceeding $1 billion in commercial agreements.As a trusted partner in satellite communications, Astranis caters to clients with high standards for reliability, security, network performance, and tailored solutions. With over $750 million raised from distinguished investors such as Andreessen Horowitz, Blackrock, and Fidelity, our team of 450 skilled engineers and entrepreneurs operates from our expansive 153,000 sq. ft. headquarters in Northern California, USA.

At Mechanize, we are pioneering the development of Reinforcement Learning (RL) environments tailored to train AI models for real-world applications. Our ambition is to facilitate the complete automation of the economy, partnering with leading AI laboratories. Discover more at mechanize.work.As a Software Engineering Intern at Mechanize, you will play a pivotal role in assisting our team to develop these groundbreaking RL environments. If you have a solid command of Python programming and possess a keen intellect, we would love to hear from you.We are currently seeking interns for Winter 2026, Spring 2026, and Summer 2026.No prior experience in machine learning or AI is necessary.Curious about our interview process? Learn more here: https://www.mechanize.work/how-our-interview-process-works/

Join dstaff as a Senior Technical Project Manager where you will lead dynamic project teams in delivering innovative technical solutions. Your expertise will guide projects from conception through execution, ensuring timely delivery and alignment with strategic objectives. You will collaborate with cross-functional teams, manage stakeholder expectations, and drive continuous improvement initiatives.

Astranis is at the forefront of satellite technology, designing advanced satellites for high orbits to extend humanity's exploration of space. Our satellites are integral in providing dedicated, secure networks for a diverse clientele that includes large enterprises, sovereign nations, and the U.S. military. With five satellites currently operational and numerous launches on the horizon, we are tackling a robust portfolio of over $1 billion in commercial contracts.As the preferred partner for satellite communications, Astranis meets the rigorous demands of clients who require high uptime, robust data security, and extensive network visibility and customization. Backed by more than $750 million in funding from leading investors such as Andreessen Horowitz, Blackrock, and Fidelity, we are proud to employ a talented team of 450 engineers and entrepreneurs who design, build, and operate our satellites from our expansive headquarters in Northern California.Senior Thermal AnalystIn your role as a Senior Thermal Analyst at Astranis, you will be the principal technical expert in thermal modeling and simulation. While closely engaging with Astranis' space hardware, your primary focus will be on the virtual validation of our vehicle thermal systems. You will lead the analysis strategy for a range of components, from high-power electronics to comprehensive spacecraft architectures, ensuring our predictive models align with real-world performance.The ideal candidate possesses an in-depth understanding of Finite Element Analysis (FEA) principles, particularly with Thermal Desktop and/or ANSYS Mechanical/Icepak. You should have significant expertise in solver settings, enabling you to optimize mesh sizing, time-stepping, and convergence criteria to enhance runtime efficiency without compromising accuracy.

ABOUT US:At Astro Mechanica, we are pioneering a new era in aerospace innovation. Our vision is to revolutionize high-speed flight, creating a future where supersonic travel is not only feasible but also sustainable and accessible to everyone. We are committed to transforming global mobility, making it as efficient as commercial air travel today. By integrating our cutting-edge airframe and propulsion technologies, including our unique Duality™ system, we aim to close performance gaps in aircraft for the United States government and beyond.WHO WE ARE:Our team consists of dedicated and passionate engineers who thrive on innovation in aerospace. With a blend of generalist knowledge and specialized skills, we foster a collaborative and flat organizational culture that prioritizes engineering excellence over hierarchy. We embrace a fast-paced environment and value practicality in our work.WHO YOU ARE:We are looking for a Mechanical Engineer to become an integral part of our dynamic team. The successful candidate will take full ownership of hardware design processes from initial concept to production, understanding the intricate interactions with surrounding systems. You will tackle technical challenges using fundamental principles, with your contributions directly influencing the design and performance of the Duality™ engine.In this role, you will be responsible for designing, analyzing, and validating key propulsion systems through all stages, from early prototyping to flight qualification and integration. Your approach will reflect our philosophy of testing under realistic conditions.WHAT YOU’LL DO:Engage in design trade studies while considering system-level impactsExecute detailed design work and support it with structural, thermal, and fluid analysesConduct design reviews and actively seek stakeholder feedbackBuild prototypes, design necessary tooling, and create work instructionsPerform hardware testing and analyze results to ensure compliance with performance metrics and requirementsIdentify hardware issues efficiently and determine appropriate corrective actions

ABOUT ASTRO MECHANICA:At Astro Mechanica, we are a pioneering aerospace firm dedicated to reshaping the future of high-speed travel. Our vision is to democratize supersonic flight, making it not only accessible but also sustainable and efficient. We believe that the future of global mobility is rapid, on-demand, and point-to-point. By integrating our cutting-edge airframe and engine technologies, including our proprietary Duality™ propulsion system, we aim to redefine the standards of commercial air travel. Currently, we are focused on developing adaptable, high-speed systems to enhance aircraft performance for governmental needs.OUR TEAM:Our team is composed of passionate engineers who are committed to advancing aerospace technology. We embrace a flat organizational structure that encourages collaboration and innovation, prioritizing engineering excellence over hierarchy. Our rapid pace and practical approach empower us to create effective solutions.YOUR ROLE:Astro Mechanica is seeking a highly skilled Propulsion Cycle Analysis Engineer to join our innovative team. The successful candidate will possess an in-depth understanding of complex system dynamics and will take charge of modeling the thermodynamic cycle of our novel engine architecture. Your contributions will directly influence the configuration and performance of our turboelectric adaptive jet engine.In this role, you will simulate the operational envelope of our groundbreaking jet engine, predict its behavior, and align simulations with real-world data. You will work closely with propulsion, aircraft, and test teams to conduct conceptual trade studies and deliver highly accurate predictions of engine performance. Attention to detail and a knack for solving intricate, interconnected challenges will be essential for your success.KEY RESPONSIBILITIES:Employ propulsion 1D thermodynamic cycle models (NPSS, PyCycle, GasTurb, Amesim) to forecast engine performance based on analytical maps and operational conditions.Enhance and uphold the accuracy of simulation models by anchoring them to historical and internally generated test data.Create automated tools to enhance functionality and improve user interface.Collaborate with engineering teams to conduct engine parameter sensitivity analyses and understand their implications on aircraft performance.

Astranis is at the forefront of the aerospace industry, engineering cutting-edge satellites that extend humanity's capabilities into high orbits. Our satellites deliver dedicated and secure networks to a diverse range of sophisticated clients, including large corporations, government entities, and the US military. With five satellites currently in orbit and an extensive lineup of launches planned, we are addressing a robust backlog exceeding $1 billion in commercial contracts.Astranis is recognized as the go-to satellite communications partner for clients who demand high uptime, robust data security, comprehensive network visibility, and tailored solutions. With over $750 million raised from leading investors such as Andreessen Horowitz, Blackrock, and Fidelity, our team comprises 450 talented engineers and entrepreneurs dedicated to designing, building, and operating our satellites from our expansive 153,000 sq. ft. headquarters in Northern California, USA.Role OverviewAs a Senior Technical Project Manager specializing in Payload Engineering at Astranis, you will be instrumental in spearheading the RF and communications engineering development for all our projects. Your leadership will guide initiatives from conception through to completion, ensuring projects align with objectives, adhere to timelines, and remain within budget. This position requires extensive collaboration across functions and adaptability to navigate challenges throughout the project lifecycle.Key ResponsibilitiesProactively identify and address cross-disciplinary challenges.Create integrated project schedules with quantifiable milestones for all payload units and subsystems.Monitor and document project progress meticulously.Act as a conduit between the development engineering team and other stakeholders, including supply chain, software, and operations.Facilitate the implementation and organization of risk and opportunity strategies.Devise and implement strategies to ensure timely completion of projects.Collaborate closely within the Program Management team to uphold PM best practices and processes across Astranis.

Role overview AECOM is hiring a Senior Mechanical Engineer in San Francisco. This role leads project work and collaborates with teams across disciplines. The focus: designing, developing, and implementing mechanical systems that support efficiency and sustainability goals.

ABOUT PAX At PAX, we are dedicated to transforming lives through outstanding consumer experiences. Our commitment to innovation, scientifically-backed quality, and award-winning design has established us as a leader in the industry for nearly two decades. Millions trust our high-performance products, which are crafted for precision, purity, and consistency. Our culture revolves around prioritizing people, making impactful contributions together, and enjoying the journey. We believe that exceptional products, a fulfilling employee experience, and robust operational rhythms are interconnected. PAX has garnered accolades for its brand, culture, and products from esteemed publications, including The New York Times’ Wirecutter, TIME, Fast Company, GQ, Gear Patrol, mg Magazine, and High Times. Furthermore, we are proud to be certified Plastic Negative across all product lines by rePurpose Global, ensuring that we remove twice as much plastic from nature as we use in our products. ROLE OVERVIEW As a Senior Mechanical Engineer reporting to the Director of Mechanical Engineering, you will spearhead the design of innovative, cost-effective, and reliable products that meet delivery schedules. You will also troubleshoot and enhance existing products while collaborating closely with engineering colleagues to devise optimal solutions for complex design, structural, thermal, and battery life challenges. Proficiency in sketching and prototyping new concepts, along with familiarity with engineering best practices, will be essential. You may also guide and oversee the work of junior team members. Our products are celebrated for their exquisite design, high quality, and reliability. Our Mechanical Engineers play a vital role in shaping the architecture and detailed design of all our products, working in tandem with the Hardware team to realize the product vision. This role is pivotal in leading the development of future innovations. Key Responsibilities: Collaborate with cross-functional teams to develop high-quality products that exceed customer expectations. Partner with Industrial Design to evaluate product features for manufacturability and recommend efficient processes and equipment. Lead the development of mechanical product architectures, assemblies/modules, parts, and accessories. Design detailed mechanical components, including complex assemblies and sub-systems. Conduct feasibility studies to ensure designs meet mechanical robustness, scheduling, and cost targets. Oversee both internal and external prototyping efforts. Facilitate design reviews and promote engineering best practices.

At Crusoe, our mission is to expedite the growth of energy and intelligence. We are building the infrastructure that fuels a future where individuals can innovate boldly with AI, without compromising on scale, speed, or sustainability.Join the AI revolution with Crusoe's sustainable technology. Here, you will spearhead significant innovations, create real-world impacts, and collaborate with a team that is leading the charge in responsible, transformative cloud infrastructure development.About the Role:Crusoe's Digital Infrastructure Group (DIG) is on the lookout for a Technical Project Manager to oversee the technical design components of expansive data center development initiatives. The ideal candidate will possess substantial experience in Technical Project Management and have a strong foundation in mechanical engineering or MEP engineering.Your Responsibilities:Manage a team of external design engineers across various disciplines to successfully execute large campus data center projects.Collaborate with clients, design and construction teams, and vendors.Conduct high-level calculations for mechanical systems.Evaluate data from GIS, FEMA, topographic studies, and surveys to assess site viability for large-scale projects.Draft conceptual systems designs for mechanical cooling and operational sequences for mechanical plants.Analyze CFD (computational fluid dynamics) reports and recommend corrective measures.Translate client design standards into actionable design requirements for external partners.Review and optimize large-campus design packages for cost control, timeline adherence, and compliance with design standards.Qualifications:Proven experience in design management and leading design teams.Ability to thrive in a fast-paced environment.7+ years of professional engineering experience in mechanical or architectural engineering.Familiarity with designing, constructing, and commissioning large central utility plants.A Professional Engineering license is preferred but not mandatory.

Astranis is pioneering the development of advanced satellites for high orbits, enhancing humanity's capabilities within the solar system. Our satellites are at the forefront of providing dedicated and secure networks to a diverse clientele, including major enterprises, government agencies, and military organizations. With five satellites already in orbit and numerous launches planned, we are addressing a commercial contract backlog exceeding $1 billion.Astranis stands out as the preferred satellite communications partner for customers with stringent demands for uptime, data security, network visibility, and customization. Having secured over $750 million from some of the world's leading investors—ranging from Andreessen Horowitz to Blackrock and Fidelity—we are proud to employ a talented team of 450 engineers and entrepreneurs who design, build, and operate our satellites from our expansive 153,000 sq. ft. headquarters in Northern California, USA.Thermal EngineerAs a Thermal Engineer at Astranis, you will be instrumental in designing, evaluating, and testing innovative thermal solutions, encompassing everything from electronic components to complete spacecraft thermal vacuum tests. A robust problem-solving skill set and hands-on testing experience are essential. While familiarity with spacecraft or printed circuit board thermal management is advantageous, it is not mandatory.RoleAdvance designs through conceptual, preliminary, and detailed phases, utilizing practical passive and active thermal control techniques.Facilitate design trades that effectively balance performance margins, resources, risks, costs, and timelines.Conduct thermal analyses with varying fidelity levels on diverse hardware types, including propulsion components, batteries, high-powered electronics, RF components, mechanisms, and printed circuit boards (PCBs).Design, assess, procure, and test thermal solutions such as heaters, heat pipes, thermal interface materials, and surface coatings.Establish processes and procedures for integration and assembly to ensure adherence to thermal design specifications. Collaborate with the integration and test team, providing support for thermal hardware installation as needed.Plan and execute thermal vacuum testing and verification at both component and spacecraft levels.Assist in the recruitment, interviewing, and onboarding of new team members as our team continues to grow.