Senior Mechanical Engineer

About FluidStack

Fluidstack is the AI Cloud Platform. We build GPU supercomputers for top AI labs, governments, and enterprises. Our customers include Mistral, Poolside, Black Forest Labs, Meta, and more.

Our team is small, highly motivated, and focused on providing a world class supercomputing experience. We put our customers first in everything we do, working hard to not just win the sale, but to win repeated business and customer referrals.

We hold ourselves and each other to high standards. We expect you to care deeply about the work you do, the products you build, and the experience our customers have in every interaction with us.

You must work hard, take ownership from inception to delivery, and approach every problem with an open mind and a positive attitude. We value effectiveness, competence, and a growth mindset.

About the Role

Fluidstack is hiring a Senior Mechanical Engineer, Critical Environment to own the end-to-end performance of the mechanical plant that powers our global data-center fleet. You’ll serve as the technical authority from concept through commissioning - partnering with design, construction, and operations teams to create robust, scalable cooling and HVAC solutions, oversee integration and commissioning, and keep facilities running 24 × 7. Expect to troubleshoot live issues, refine maintenance and safety standards, and drive sustainability and efficiency improvements across every new build and retrofit in our rapidly growing portfolio.

Focus

Design:

• Delivers make-or-buy recommendations to leadership, weighing complexity, cost, quality, reliability, and schedule, and influences peers working on comparable products.

• Holds deep expertise in several technical domains and stays ahead of industry trends, competitor offerings, and engineering breakthroughs—regularly mentoring teammates on advanced concepts.

• Crafts robust, scalable, secure, and extensible hardware designs and verification strategies that anticipate current competitive and security threats across a range of mature, complex products or feature sets.

• Solves intricate design challenges that span multiple technical and business variables, then rolls those lessons into forward-looking solutions for future projects.

• Authors detailed internal device specification sheets and interprets the complex requirements needed to design and validate diverse hardware features.

• Independently produces drawings for sophisticated new products or features using modeling tools, and coaches others on core tool capabilities.

Testing and Verification:

• Reviews design documentation to ensure test requirements and improvements are embedded in hardware specs.

• Co-creates measurement methodologies with partners to evaluate new technologies, guided by updated verification plans.

• Scouts and introduces new tools, test methods, and best practices for building test cases.

• Develops, reviews, and executes test plans for challenging feature areas or full products.

• Builds engagement plans for external testing suppliers/partners, checks their readiness, and captures their know-how for the broader product group.

• Records test data, runs complex statistical analyses to pinpoint bugs or failure rates, advises peers on predictive-modeling tools, and compiles findings.

• Performs root-cause analysis on highly complex issues that could impact a product or feature change and proposes solutions.

• Offers guidance to fellow engineers working on product features.

Project Implementation:

• Generates project schedules, tracks progress, and maps resource dependencies for the hardware portions of complex features or products, mentoring team members along the way.

• Drives product plans that factor in user experience, partner test scenarios, and critical, verifiable requirements (function, quality, safety, serviceability, reliability).

• Evaluates and approves material reliability, properties, and production techniques for large-scale designs.

• Flags the most significant project risks early and crafts mitigation plans.

• Communicates project status to internal teams, customers, and partners, escalating issues when needed.

• Recommends project elements that feed Material Change Review Board (MCRB) efforts to address production issues.

Reporting and Documentation:

• Produces tailored reports and functional specs for established products or features, based on audits and insights from development and verification; reviews peers’ documentation.

• Captures detailed information about materials, components, and functionality for complex devices via standard drawing-release processes, highlighting potential compatibility, safety, or compliance concerns.

• Accurately logs and tracks design changes per configuration-management protocols and mentors others on doing the same.

About You

• Bachelor's Degree in Mechanical Engineering, or related field AND 4+ years related technical engineering experience

  • OR Master's Degree in Mechanical Engineering, or related field AND 3+ years related technical engineering experience

  • OR Doctorate in Mechanical Engineering, or related field

  • OR equivalent experience.

• Do you have at least 2 years of experience in operations or manufacturing?

• Ability to meet Fluidstack, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings:

• Fluidstack Background Check: This position will be required to pass the Fluidstack background check upon hire/transfer and every two years thereafter.

Nice to have

• Bachelor's Degree in Mechanical Engineering, or related field AND 8+ years related technical engineering experience

  • OR Master's Degree in Mechanical Engineering, or related field AND 6+ years related technical engineering experience

  • OR Doctorate in Mechanical Engineering, or related field AND 3+ years related technical engineering experience

  • OR equivalent experience.

Benefits

• Competitive total compensation package (cash + equity).

• Retirement or pension plan, in line with local norms.

• Health, dental, and vision insurance.

• Generous PTO policy, in line with local norms.

Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.