JOIN US IN CREATING A MORE SUSTAINABLE WORLD

The world is in dire need of change. The excuses are too many and the pace is too slow. Radical innovation at breakneck speeds is the only solution to the climate and energy crisis which is accelerating change in our environment faster than ever. At Supercritical we aim to be the catalyst for sustainable life on earth. Join us on our journey.

View our openings

We are scientists, we are engineers and  we are problem solvers.

We pride ourselves on being innovators and collaborators for the greater good.

We are a fast growing and dynamic team with sustainability at the heart of what we do.

Curiosity and a sense of purpose drive us to push the boundaries of science and technology, leaving a legacy in our wake.

We embrace the opportunity to collaborate and partner, putting trust in ourselves and colleagues above all else.

We welcome diversity and different perspectives and celebrate other’s ideas, taking joy in the challenge and the debate.

Making sense of the unknown and uncovering tomorrow’s solutions, we will pioneer hydrogen technology that enables industry to transition beyond fossil fuels.

BENEFITS

Flexibility and Supportive of Balance

• Flexible start and finish times
• Flexible on home working
• Flexible on working abroad

Parental Leave Policy

3 months full pay for mothers and fathers

Growth Opportunities

Wide range of exposure and development

Support for Training and Accreditation

Professional fee coverage

Monthly Team Days & Lunch Outings

Team Milestone Celebrations

Pension

3% employee contribution +
5% employer contribution

Referral bonuses

Open Positions

Future Talent / Speculative Application

Operations

View role

View PDF Apply Now

The Mission

At Supercritical, we aren’t just building another electrolyser; we are developing the world’s first high-pressure, ultra-efficient system to make green hydrogen affordable. By eliminating the need for expensive compressors and "forever chemicals" (PFAS), we are removing the biggest barriers to a zero-carbon industrial future.

We are growing fast. While we might not have a live vacancy that matches your exact profile today, we are always looking for the "Supercritical" people of tomorrow: the problem solvers, the tinkerers, and the climate-obsessed.

Who We Look For

We are a mission-driven team of electrochemists, mechanical engineers, data geeks, and pioneers. Even if your specific job title isn't listed, we want to hear from you if you are:

A Technical Trailblazer: You might be an expert in high-pressure fluid systems, power electronics, or complex chemical modelling.
A Data-Driven Thinker: You love turning "messy" experimental data into actionable insights using Python, SQL, or time-series analysis.
A Creative Operator: You thrive in the ambiguity of a startup and enjoy building processes where none existed before.
A Mission Ally: You are genuinely passionate about deep-tech solutions to the climate crisis.

What Life at Supercritical Looks Like

Radical Transparency: We share our wins, our failures, and our data openly across the entire team.
High Autonomy: We hire smart people and get out of their way. You will have the freedom to own your projects from day one.
Hybrid and Balanced: We work from our West London lab and office to collaborate in person, but we embrace flexibility (typically 2 to 3 days remote) and respect your time outside of work.

The Perks

Family First: 3 months of full-pay parental leave for all parents.
Investing in You: Support for professional training, accreditations, and technical subscriptions.
The Basics (But Better): Competitive pension (5% employer contribution), monthly team lunch outings, and milestone celebrations.
Sustainable Culture: Work in a PFAS-free and iridium-free environment focused on "forever" solutions.

How to Apply Speculatively

Click "Apply" and send us:

Your CV.
A short note: It does not have to be a formal cover letter. Just tell us what specific area of Supercritical excites you and what kind of impact you want to make.

Note: As a high-growth startup, we review speculative applications periodically. If a role opens up that aligns with your skills, we will be in touch!

Accountabilities

About you

We’re operating a hybrid work model where the role permits. Our labs and offices are in West London, for this role we are offering the flexibility of 3 days a week working from home.

Full-time (Future Openings)

apply

Your details will be shared with our trusted recruitment partner to help us manage your application efficiently and they will contact you directly regarding your application.

Please note that we are not in a position to offer sponsorship. Applicants must have the right to work in the UK for the role that they are applying for.

Thank you!
Your submission has been received!

Oops! Something went wrong while submitting the form.