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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.

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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.

Open Positions

Senior C&I Engineer

For this role, we are flexible on title:

Senior Systems Engineer <> Senior Process Control Engineer <> Senior Control and Instrumentation Engineer

Supercritical is looking for an experienced Senior Systems Engineer to join the product team. The successful candidate will help take Supercritical’s novel electrolyser to market by using their experience to optimise the control system of our test rigs, select instrumentation and engage with vendors regarding the design and implementation of control systems and data logging.

The Senior Systems Engineer, with experience in system design and control and familiarity with British and International standards, will work closely with the wider engineering team, vendors and external stakeholders to drive the system towards certification. They will use their experience and knowledge in electrical equipment to support electrical design around the balance of plant around the electrolyser and work with the technology team to design the electrical connections in the electrolyser at cell level.

With multiple projects now secured and technology demonstrators in the works, we need a bright, passionate and driven person to join the team to help us fulfil our mission to pioneer hydrogen technology that enables industry to transition beyond fossil fuels.

  • Tackling technical challenges with innovative solutions, from mechanical design to coating processes or modelling to electrochemical trials, your best ideas will be put to the test.
  • Scoping and managing external development partners in delivering work programmes essential to the core electrolyser’s development.
  • Designing, specifying, procuring, building and commissioning test-rigs
  • Programming integrated data acquisition of the test-rig (eg. pressure, temperature, power input, product purity).
  • Supporting control and automation activities to maximise the efficiency of lab operations
  • Defining and optimising designs of experiment across novel process development or test conditions
  • Introducing automated safety systems and shutdown features to enable unsupervised testing.
  • Enabling electrolyte recirculation and replenishment.
  • Running experimental protocols.
  • Identifying improvements and optimisations that can be introduced in the test-stand.
  • Working with the wider engineering team when considering scale up of learnings in the lab
  • Support in a wider range of activities that are crucial to enabling Supercritical’s success
About you

The ideal candidate will possess:

  • Thrive in a startup environment as a self starter and proactively identify problems and pursue solutions. Flexibility and responsiveness in a fast-paced, dynamic, small-team environment
  • Be passionate about a net zero environment, excited by innovation and proactive in your pursuit of it.
  • Have a PhD in a science or engineering discipline or a Masters with 3+ years of industrial experience
  • Be able to work well in a team whilst also self driven and autonomous on the task at hand.
  • Experience in Labview or programming (C/Python).
  • Be able to work with vendors to spec hardware and software.
  • Have experience in automation and safety systems.
  • Able to design and build test stands.
  • Familiarity with risk assessments/GLP.

Additional desirable qualifications include:

  • Experience with high pressure or high temperature gas and fluid systems.
  • Use of swagelok components.
  • Basic understanding of electrochemistry.

Direct applicants only - no agencies. Supercritical are not currently in a position to sponsor overseas applications.

Full time


Join us in pioneering hydrogen technology that enables industry to transition beyond fossil fuels.

Thank you!
Your submission has been received!
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Senior C&I Engineer


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