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.

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
Application window will remain open until 15th July 2025.
The Opportunity:
Supercritical is seeking a highly motivated, analytical, and proactive Intern to join our dynamic team and play a key role in shaping the future of green hydrogen. Joining the commercial team, you'll be immersed in the fast-paced world of a startup intent on disrupting the energy industry and enabling a net-zero future. You'll have the opportunity to dive into diverse and challenging projects, gaining invaluable experience across various commercial functions, from market analysis (in person events included) to business development (with real customer engagement) and customer and grant strategy development.
Just as our engineers pioneer innovative solutions to complex technical challenges, you will be encouraged to bring your curiosity and fresh perspective to identify and pursue commercial opportunities. You will contribute to scaling our commercial operations, supporting activities ranging from identifying funding opportunities and crafting compelling proposals to analysing market trends and developing effective commercial strategies. You'll learn to ask, “How can we improve this process, capture this market, or better communicate our value?”
This internship will provide you with hands-on experience in a rapidly growing company, working alongside co-founders and experienced leaders. In the close-knit community that only a start-up can offer, you’ll develop a broad skillset, hone your commercial acumen, and build an empowering understanding of how commercial strategy drives the success of a cutting-edge technology company.
What you’ll do:
- Research opportunities within the deep tech, hydrogen, and green hydrogen sectors related to commercialisation activities (funding, partners, investors, customers, markets, etc…).
- Leverage your analytical techniques with the latest tools to digest market data and report into the business the trends you see and the suggestions you have.
- Act as first responder to incoming customer enquiries, qualifying commercial leads
- Present findings with wider business on Team Days to inform colleagues about relevant developments within the market.
- Help prepare materials for meetings and presentations with a variety of stakeholders.
- Support the development of marketing materials for industry professionals (video product demos, blog posts, website articles, poster content, etc…).
- Deliver the social media strategy with appropriate content at a good frequency.
- Support the CPO, Business Development Manager and Product Manager in the development and submission of proposals and grant applications.
- Perform administrative tasks as needed (comparing and proofreading documents, scheduling meetings, taking meeting minutes, etc…).
- Assist in improving internal processes and systems, such as organising data storage and testing the feasibility of new ideas.
- Roll-up your sleeves and get stuck in a wide variety of things. In start-ups we wear many hats. You’ll be in the commercial team but be exposed to the ongoings of the whole business.
What you’ll get
- Take ownership and accountability for tasks you wouldn’t get at a large corporate
- Gain a better understanding of the scaling of a startup and learn about all the moving parts, including business development, growth strategy, funding and investment, finances, risk analysis and how everything ties together.
- Learn about the technical and scientific aspects of the business related to hydrogen electrolysis.
- Consistent feedback on performance and the opportunity to ask questions and learn with experienced founders and team members.
About you
Ideally, you will:
- Be pursuing a career in clean tech, commercialisation of technology or business leadership
- Have a degree / MBA or be pursuing a degree / MBA
- Be inherently curious and demonstrate the ability to find opportunities to solve problems (e.g. market developments that might make for good commercial opportunities)
- Be a self-starter and proactively identify problems and pursue solutions
- Be willing and capable to think creatively and be confident in contributing perspectives in a wider team
- Have strong analytical and problem-solving skills
- Possess excellent written and verbal communication skills
- Be highly organised and able to manage multiple tasks simultaneously
- Be eager to learn about the green hydrogen industry and commercial operations at a scaling deep tech startup in the renewable energy space
- Be willing to be creative and outgoing when supporting on marketing activities
- Be able to work both within a team and independently
Desirable
- Knowledge of the energy sector and/or hydrogen industry
- Basic literacy in entrepreneurial finance and familiarity with startups
- Past demonstrable experience in a similar working environment or a trajectory that shows intent
- Experience with grant writing, marketing content development, creating lists of potential customers or partners for business development, data analysis, or administrative work.
You will be able to take 25 days (+ bank holidays) per annum pro rata as unpaid leave.
Supercritical is looking for an experienced and dynamic Senior Process Engineer to join our product development team, who will focus on bringing our proprietary reactor design and associated balance of plant through increasing scales, from demonstrator to pilot to commercial size. You will also support our Technology team which focuses on electrolytic testing at larger and larger scales within our test environments and partner sites. By working within our technical team and with our respected partners and subcontractors, the process engineer will pioneer the equipment configuration for safe electrolysis under supercritical water conditions.
We’re really excited about expanding and diversifying our team. Coming from a diverse background ourselves, we do not discriminate regardless of disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race (including ethnic or national origins, colour and nationality), religion or belief (including lack of belief), sex, sexual orientation or any other characteristic. We can’t wait to have you on board!
- Execute and lead process engineering design activities in a timely and cost-effective manner.
- Collaborate with our subcontractors and vendors to enable our goals of reaching a TRL6 at our demonstrator scale plant by 2026, and a pilot by 2027.
- Flowsheet development (PFDs), detailed calculations and mass and energy balance ownership.
- Process control and system design (P&IDs).
- Calculation development for design and sizing of equipment and instrumentation.
- Creating equipment and instrument specifications, and supporting the procurement process.
- Hazard identification and risk management.
- Own the technical delivery of engineering projects, reviewing engineering contractor design deliverables and responding to technical queries.
- To work with Supercritical’s technology team, to support our lab-scale testing and scale-up, working to minimise hazard and risk.
- Contribute to writing bids: both grant application and customer proposals.
- Customer-facing project development and negotiations for product integration.
- Partner and vendor liaison and negotiation.
- Be passionate about a net-zero environment, excited by innovation and proactive in its pursuit.
- Have a master's degree or above in Chemical / Process Engineering.
- Hold a senior or equivalent status as a process engineer in a relevant industry.
- Have demonstrated significant experience of working with high pressure/high-temperature systems and flammable gases.
- Be adept in process engineering design from first principles.
- Have demonstrable professional experience throughout the project development lifecycle, from feasibility and conceptual work, through FEED and EPC to delivery and operations.
- Be a proficient user of process modelling software such as Aspen, HYSYS, PRO II or Unisim.


ABOUT SUPERCRITICAL
By bringing brilliant minds together in an innovation conducive environment, we’ll catalyse net zero.