SST Systems Architect, Technical Lead
About the role
The Product Engineering Team at Fluidstack is responsible for architecting and developing the power and cooling systems that enable the company to deliver gigawatt-scale AI data centers faster and denser than traditional methods allow. This role specifically focuses on the Solid-State Transformer (SST) group, which is designing solid-state transformers as a core component of the power architecture.
Responsibilities
- Architect a medium-voltage solid-state transformer that can be manufactured, serviced, and scaled across gigawatt-scale campuses, not just demonstrated in a lab.
- Define the interface between the SST and the MVDC distribution system, including protection, control boundaries, and fault behavior.
- Build a semiconductor and magnetics supply strategy that survives a thin 10kV SiC market over a multi-year horizon.
- Develop converter hardware from topology selection through working prototypes on a schedule that data center construction actually depends on.
- Own the system trade-offs and the interface with the MVDC systems team, writing down exactly where the SST stops and the system begins, precisely enough that both teams can design against it.
- Develop a program plan and prototype roadmap, and make the build-vs-partner recommendation honestly, including the case where partnering is the right answer.
- Develop vendor and research partnerships across device makers, labs, and universities that secure the devices, test capacity, and expertise the program needs.
Requirements
- 15+ years in power conversion and experience leading an SST or MV converter program at the level of ABB/Hitachi Energy research, GE, Delta, EPRI, or a FREEDM/ETH/Aachen lineage lab.
- Experience owning converter topology selection, semiconductor strategy, and system trade-offs at MW scale, and the ability to defend the choices made.
- Experience leading converter development teams from architecture through working hardware, not just papers or simulations.
- Expertise in the SiC ecosystem, capable of writing a five-year semiconductor strategy in a market where 10kV devices barely exist.
- Experience living through a program that died or nearly died, and understanding the reasons behind its failure, along with knowing how to avoid similar issues in future projects.
- Ability to write a 12-month program plan for 8 engineers and defend it line by line.
Qualifications
- Bachelor's degree in Electrical Engineering, Physics, Materials Science, or a related field.
- Experience with power electronics, magnetics, and controls engineering.
- Strong analytical and problem-solving skills.
- Excellent communication and collaboration skills.
Skills
- Power conversion and transformer design experience.
- Experience with semiconductor materials and manufacturing processes.
- Knowledge of MVDC systems and their integration.
- Experience with vendor and university research partnerships.
- Ability to work independently and manage multiple projects simultaneously.
Benefits
Fluidstack offers competitive compensation and benefits, including:
- Competitive salary range of $208K - $263K.
- Flexible work arrangements.
- Health insurance options.
- Retirement savings plans.
- Professional development opportunities.
Pay
$208K - $263K
Schedule
Full-time, Monday through Friday, with occasional evening and weekend work as needed.
Company Information
Fluidstack exists to make humanity more free by deploying frontier compute infrastructure faster than others, ensuring that AI expands human freedom rather than shrinking it. We are committed to pay equity and transparency, and we are 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.
Contact Information
To apply, please submit your resume/CV, the role you've applied for, and the date you submitted your application to careers@fluidstack.io. Someone from our recruiting team will be in touch.