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
Supercritical is looking for a research and development engineer that will enhance our technology team and move us towards our goals of scaling our cells and modules through advancing our core understanding of the science within our novel operating conditions. You will be passionate about diving into complex problems to pioneer innovative and novel solutions for our challenging operating conditions, while asking “How can we do this better?”. You will come from a scientific or engineering discipline and will have a well-honed capability in research, applying your capabilities to advance product development in a structured way. You will join an exciting and fast moving company that is intent on disrupting the energy industry and enabling a net zero future.
- Characterise a wide range of metal electrodes for hydrogen evolution and oxygen evolution reactions.
- Investigate methods to increase the performance and durability of electrodes.
- Investigate manufacturing and production methods of electrodes and how they affect performance.
- Investigate corrosion tolerance of materials and develop corrosion-resistant coatings.
- Assist with the design and fabrication of electrolyser cells and modules.
- Design experiments, pioneer new test protocols and standardise operating procedures.
- Procure and manage reagents, electrochemical equipment and consumables.
- Work with external research partners to create viable technical solutions.
- Deliver project outputs on time and within budget.
- Work with grant authorities and project partners on large, complex, collaborative projects.
- Report research outputs within the company.
Ideally, you will:
- Have experience with alkaline electrolysis systems at commercial scale.
- Be passionate about a net zero environment, excited by innovation and proactive in your pursuit of it.
- Have 2+ years of industrial experience in materials science, physics, electrochemistry or similar scientific discipline.
- Hold an MSc or BSc in a relevant discipline such as chemistry, electrochemistry or materials science.
- Bring a strong materials science background, ideally with specialisation in metal alloys and multi-metal oxides.
- Perform EIS data analysis, equivalent circuit fittings and distribution of relaxation times (DRT) analysis, draw conclusions from experimental results and present them confidently.
- Be competent at analysing and disseminating results to non-scientists.
- Perform tests, analyse and present results comfortably.
- Demonstrate strong problem-solving skills.
- Have outstanding communication skills, both written and verbal.
- Be proactive and self-motivated, taking initiative to drive towards company goals.
Desirable:
- Hold a PhD in a relevant discipline such as electrochemistry or materials science.
- Have experience in corrosion chemistry.
- Density functional theory (DFT) modelling of alloys
- Experience of working with high pressure/high temperature systems.
- Have experience in start-up or scale-up environments.
Supercritical is looking for a research and development engineer that will enhance our technology team and move us towards our goals of scaling our cells and modules through advancing our core understanding of the science within our novel operating conditions.
You will be passionate about diving into complex problems to pioneer innovative and novel solutions for our challenging operating conditions, while asking “How can we do this better?”. You will come from a scientific or engineering discipline and will have a well-honed capability in research, applying your capabilities to advance product development in a structured way.
You will join an exciting and fast moving company that is intent on disrupting the energy industry and enabling a net zero future.
- Characterise a wide range of metal electrodes for hydrogen evolution and oxygen evolution reactions.
- Investigate methods to increase the performance and durability of electrodes.
- Investigate manufacturing and production methods of electrodes and how they affect performance
- Investigate corrosion tolerance of materials and develop corrosion-resistant coatings.
- Assist with the design and fabrication of electrolyser cells and modules.
- Design experiments, pioneer new test protocols and standardise operating procedures.
- Procure and manage reagents, electrochemical equipment and consumables.
- Work with external research partners to create viable technical solutions.
- Deliver project outputs on time and within budget.
- Work with grant authorities and project partners on large, complex, collaborative projects.
- Report research outputs within the company.
Ideally, you will:
- Be passionate about a net zero environment, excited by innovation and proactive in your pursuit of it.
- Have industrial experience in materials science, physics, electrochemistry or similar scientific discipline.
- Hold an MSc or BSc in a relevant discipline such as chemistry, electrochemistry or materials science.
- Bring a strong materials science background, ideally with specialisation in metal alloys and multi-metal oxides.
- Be competent at analysing and disseminating results to non-scientists.
- Perform tests, analyse and present results comfortably.
- Demonstrate strong problem solving skills.
- Have outstanding communication skills, both written and verbal.
- Be proactive and self-motivated, taking initiative to drive towards company goals.
Desirable:
- Hold a PhD in a relevant discipline such as electrochemistry or materials science.
- Have experience with alkaline electrolysis systems at commercial scale.
- Have experience in corrosion chemistry.
- Experience of working with high pressure/high temperature systems.
- Have experience in start-up or scale-up environments.
Supercritical is looking for a Lab Technician to join our lab research and development team, based in West London. The role will suit an applicant with a good background in lab-based experimentation. This is an opportunity to join an exciting and purpose-driven startup.
You will join an exciting and fast moving company that is intent on disrupting the energy industry and enabling a net zero future.
- Conducting high-quality testing to support product development
- Assembly and disassembly of test hardware and test equipment
- Adhering to test procedures to meet research and development requirements
- Assisting in the improvement of testing procedures and processes to enhance the quality and consistency of testing
- Calibrating and maintaining equipment
- Meeting testing deadlines as per the plan
- Reporting any variances or issues that affect test results
- Collaborating with a team to achieve goals
- Strictly following all safety and operating procedures in the lab
- Coordinating and communicating work with the wider team
Ideally, you will
- Experience in lab-based research/testing
- Strong analytical skills, problem-solving abilities, and a team-oriented attitude
- Experience with high pressure and high temperature fluid systems, with knowledge of supercritical water conditions being an advantage
- Experience in maintaining and operating test stands
- Knowledge of risk assessments & good lab practice.
- A passion for product development and a commitment to a net-zero environment
- Strong organisational and communication skills
- Proactivity and self-motivation
- Knowledge of laboratory health and safety protocols
- Ability to understand and execute standard operating procedures
- Familiarity with unexpected results or issues
Desirable:
- Experience in electrolyser cell system testing
- A degree in science or engineering
- Basic knowledge of data logging and hardware control
- Experience in automation, high-throughput experimentation, data science, programming, and research development
- Knowledge of HAZIDs and HAZOPs
- Training in first aid and fire warden for a lab/workshop environment
- High-level understanding of electrochemical technology and equipment for troubleshooting purposes.
apply
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.


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