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Current Vacancies
At Equisera, we believe that tackling climate change requires the brightest minds and most passionate people, working together to accelerate Net Zero. Even if we’re not actively hiring at the moment, we’re always keen to hear from individuals who share our mission to fuel a fossil‑free future.
If you’d like to be considered for future opportunities, please email your CV and a cover letter to careers@equisera.com. We’ll keep your details on file and be in touch should a suitable role become available. Due to the high volume of interest we receive, we are unable to provide individual feedback unless you are shortlisted for an interview but we genuinely value every application and the enthusiasm behind it.
Diversity, Inclusion & Fair Hiring
We are committed to building a fair, inclusive and supportive working environment where everyone has the opportunity to succeed. STEM has long been less diverse than it should be, and we want to be part of changing that – because bringing together different backgrounds, experiences and perspectives is how we solve hard problems in cleantech.
Recruitment decisions are made on skills, potential and values alignment. We actively encourage applications from people of all backgrounds and experiences, and we work to remove barriers so we can attract, support and retain the best talent.
We encourage you to apply even if you do not believe you meet every qualification listed. Strong candidates rarely meet every criterion, and research shows that people from underrepresented groups are more likely to experience imposter syndrome and to doubt the strength of their application. Please do not rule yourself out too early – if this work interests you, we would like to hear from you.
If you require any adjustments during the interview process, or have specific needs in your working style, please let us know when you apply. We will always do our best to accommodate you.
We believe in an environment where diverse perspectives are celebrated and collaboration is the norm.
Senior Mechanical Engineer
You will be Equisera’s Senior Mechanical Engineer, taking technical ownership of mechanical design integrity across our high-pressure vessels, equipment and systems.
Location: Equisera HQ, Meadow Mill, Eastington, Gloucestershire. Based on site, working closely with our engineering, fabrication and test teams.
Salary: £70,000–£85,000 per annum, depending on experience
Contract Type: Full-time, reporting into the Chief Engineer
About Equisera
At Equisera, you will help tackle some of the hardest engineering challenges in the energy transition. Our RiPR (Rising Pressure Reformer) technology uses supercritical water to convert wet biogenic feedstocks into renewable gases, supporting our ambition to deliver carbon-negative energy and fuels.
Backed by private investment, government innovation funding and industry partnerships, we are progressing from prototype and pilot development towards commercial deployment. You will join a small, committed team where sound engineering judgement and practical delivery matter.
The Role
You will be Equisera’s Senior Mechanical Engineer, taking technical ownership of mechanical design integrity across our high-pressure vessels, equipment and systems. Your first responsibility will be to review, approve and sign off mechanical calculations and designs, ensuring that decisions are supported by robust evidence and appropriate engineering checks.
You will oversee mechanical design, build, testing and commissioning, and provide day-to-day technical leadership, line management, mentoring and support to our Mechanical Design Engineer. You will work closely with process, controls, project and QHSE colleagues, external specialists, fabricators and coded welders.
Why this role is different
This is a hands-on technical leadership role. You will move between calculations, SolidWorks models, engineering analysis and the fabrication floor, following designs through manufacture, assembly and commissioning. You will bring a disciplined systems engineering approach to an environment where prototyping, testing and learning are central to progress.
Key responsibilities
Mechanical Technical Authority
Own the mechanical design basis, design criteria and technical standards. Review and sign off calculations, drawings, specifications and analysis reports before release for manufacture or modification. Define checking and approval requirements, arrange independent or specialist review where needed, and resolve or escalate technical risks before work proceeds.
High-pressure mechanical design and analysis
Lead the design and assessment of pressure vessels, reactors, closures, bolted joints, seals, supports and associated high-pressure systems. Assess pressure, temperature, thermal expansion, fatigue, creep and material compatibility as applicable. Undertake hands-on CAD, calculations, FEA and CFD using SolidWorks, ANSYS or equivalent tools, checking assumptions and validating results against first principles and test evidence.
Systems engineering and design control
Translate process and operational requirements into traceable mechanical requirements and acceptance criteria. Manage interfaces, design reviews, verification and validation, drawing revisions and engineering change control. Maintain clear design records and proportionate stage gates from concept through commissioning, including controlled prototype changes.
Fabrication and supplier support
Work directly with the fabrication team and coded welders to develop practical, manufacturable designs. Produce and review fabrication drawings, tolerances, material specifications and bills of materials. Support welding specialists on weld details, access and distortion, and agree inspection, NDT and test requirements. Review supplier submissions, material traceability and manufacturing records, and resolve workshop queries and non-conformances.
Build, testing and commissioning
Provide mechanical technical oversight during procurement, build, assembly and commissioning. Develop and approve mechanical inspection and test plans, pressure-test requirements and acceptance criteria with the relevant specialists. Support safe test execution, troubleshoot faults and verify mechanical readiness for operation. Capture lessons learned and ensure as-built records and handover documentation are complete.
Mentoring and engineering leadership
Supervise, mentor and support our Mechanical Design Engineer, helping develop calculation, design and practical problem-solving skills. Set clear priorities, review work constructively and build confidence and technical judgement. Promote ownership, open challenge and timely escalation, while strengthening the team’s engineering discipline.
About You
Essential:
- At least 10 years’ relevant mechanical engineering experience, with substantial direct experience of high-pressure vessels and high-pressure systems.
- A degree in Mechanical Engineering or a related discipline, or equivalent technical qualifications supported by substantial relevant experience.
- A proven record as a mechanical technical lead or Technical Authority, reviewing and approving calculations, designs and engineering deliverables.
- Strong practical knowledge of pressure-vessel and pressure-system design codes, including the PED, ASME Section VIII, and the applicable pressure-equipment and pressure-system regulatory framework.
- Experience assessing mechanical integrity, materials, bolted joints, seals and thermal effects in demanding pressure and temperature conditions.
- Hands-on capability in SolidWorks and engineering analysis, including FEA and CFD using ANSYS or equivalent tools, with the ability to challenge modelling assumptions and verify results.
- Experience taking equipment from concept and detailed design through fabrication, assembly, testing and commissioning, including prototypes or development equipment.
- Experience working directly with fabricators and coded welders, with a sound understanding of fabrication drawings, welding documentation, inspection, hydro and gas pressure testing, NDT and material traceability.
- A disciplined systems engineering approach, including requirements, design reviews, interface management, verification and engineering change control.
- Ability and willingness to mentor developing engineers, explain technical decisions clearly and work constructively across disciplines.
- Practical problem-solving skills, sound safety judgement and the confidence to challenge or stop work where mechanical integrity has not been demonstrated.
Desirable:
- Chartered Engineer status (CEng), ideally through the IMechE; relevant capability and experience are more important than chartership alone.
- Experience of piping design, pipe stress, plant layout and skid-mounted process equipment.
- Experience of high-temperature pressure equipment, supercritical fluids, nickel alloys or other demanding materials applications.
- Experience in pilot plants, first-of-a-kind technology, renewable gases, hydrogen, waste-to-energy or process plant scale-up.
- Experience of working in process engineering.
Why Join Us?
- Take ownership of mechanical engineering at a stage where your decisions will shape the technology and its commercial deployment.
- Work closely with a capable team across design, laboratories, fabrication and testing, seeing your engineering built and operated.
- Develop the next generation of engineers while helping turn ambitious ideas into safe, reliable equipment.
Company Benefits
- Share options, giving you the opportunity to benefit from the long-term success and growth of the business
- Opportunity for flexible working hours (8hrs within a 7am to 7pm window)
- Private health insurance, life assurance
- Salary sacrifice EV car scheme, giving you access to a new electric vehicle at a significantly reduced cost
- Annual leave: 33 days annual leave (including bank holidays)
- Your birthday off as an extra day of leave
- Participation in the company’s standard pension scheme with a 5% contribution
- Company off-site team building days
- Access to company e-bikes for commuting or leisure use
- Career growth supported by training, development, and compliance programmes
Applicants must have the right to work in the UK. We are unable to offer visa sponsorship for this role.
How to Apply
Please send your CV and a cover letter explaining why you’re the right fit for this role to careers@equisera.com. Applications without a cover letter will not be considered. Be sure to highlight your experience in relation to the essential skills and responsibilities outlined above.
Senior Process Engineer
Reporting to the Chief Engineer, you will lead Equisera’s multidisciplinary engineering design team. You will define how RiPR is engineered into safe, operable and commercially viable process plants while leading concept development, detailed design, procurement, commissioning and continuous improvement.
Location: Equisera’s purpose-built innovation campus in the beautiful Gloucestershire countryside.
Salary: Competitive salary (£60,000-£75,000+ DOE)
Contract Type: Full-time
About Equisera
At Equisera, you’ll help build one of the world’s first commercially deployable carbon-negative energy technologies, tackling some of the hardest engineering challenges in the global energy transition.
Our breakthrough RiPR (Rising Pressure Reformer) process converts wet biogenic feedstocks, including agricultural and food waste and even plastics, into high-yield hydrogen and biomethane with minimal pre-processing. The process simultaneously captures carbon dioxide and produces biochar, delivering a truly carbon-negative energy solution.
Backed by significant private investment, government innovation funding and strategic industry partnerships, you will be joining us at a pivotal stage as we deliver our first commercial-scale plant. You’ll join a small, passionate, high-impact team helping shape the future of carbon-negative energy.
The Role
Reporting to the Chief Engineer, you will lead Equisera’s multidisciplinary engineering design team. You will define how RiPR is engineered into safe, operable and commercially viable process plants while leading concept development, detailed design, procurement, commissioning and continuous improvement.
Why this role is different
Unlike many engineering roles, this is not a desk-bound design position. At our purpose-built innovation campus, engineering, laboratories and manufacturing sit under one roof, giving you the opportunity to take ideas from first principles through laboratory validation, pilot plant and ultimately commercial deployment.
Key Responsibilities
You will develop the process engineering systems that underpin RiPR as it progresses from research and development to commercial deployment.
You will oversee chemical and mechanical engineers to define process requirements; support equipment selection; ensure that decisions are supported by robust analysis and sound engineering judgement and develop integrated process plant designs that are safe, practical and cost-effective to build and operate.
The role will involve leading the design efforts, reviewing and approving designs, supplier engagement, procurement, commissioning activities and operational troubleshooting, and mentoring the junior members of the team. You will contribute to the continuous improvement of RiPR, engineering processes and standards as the business grows.
You will own the process engineering Basis of Design, leading the development of Front End Engineering Design (FEED) packages that underpin the safe, efficient and commercially successful deployment of RiPR.
About You
Essential
- Undergraduate or masters degree in Chemical Engineering, Process Engineering or a related engineering discipline.
- Significant industrial experience in process engineering within relevant process industries.
- Experience in sectors such as hydrogen, gas processing, renewable fuels, waste-to-energy, chemical manufacturing, petrochemical or oil and gas.
- Experience working to a systems engineering design process.
- Experience of delivering FEED (Front End Engineering Design)
- Experience working with a multidisciplinary team.
- Experience developing process designs including mass balances, energy balances and equipment sizing calculations.
- Experience producing and reviewing PFDs, P&IDs, process datasheets and engineering calculations.
- Experience using Aspen Plus, Aspen HYSYS or equivalent.
- Knowledge of engineering standards including PED, ASME, DSEAR, PSSR and relevant pressure equipment codes.
- Experience participating in HAZOPs, design reviews and process safety activities.
- Understanding of process plant equipment including pumps, heat exchangers, pressure vessels, piping systems and instrumentation.
- Experience of reviewing and approving engineering deliverables.
- Strong analytical and problem-solving skills.
- Excellent communication and teamwork skills.
- Comfortable working within a fast-paced development environment.
Desirable
- Experience managing a multidisciplinary team of engineers.
- Experience supporting pilot plant, demonstration plant or first-of-a-kind technology projects.
- Experience within hydrogen, biomethane, renewable fuels, waste-to-energy or carbon capture industries.
- Experience with pressure systems, gas processing or thermal process technologies.
- Experience of the whole product development lifecycle from concept, to commissioning and through to operation.
- Experience supporting commissioning, testing and operational troubleshooting activities.
- Experience working within R&D or scale-up environments.
Why Join Us?
- Join an ambitious scale-up at the forefront of the climate tech revolution.
- Collaborate with a team of passionate professionals in an innovative and supportive environment.
- Play a key role in scaling groundbreaking carbon-negative technologies.
- This is an opportunity to become one of the engineering leaders of a company taking breakthrough technology from laboratory development to first commercial deployment.
Company Benefits
- Share options, giving you the opportunity to benefit from the long-term success and growth of the business
- Opportunity for flexible working hours (8hrs within a 7am to 7pm window)
- Private health insurance, life assurance
- Salary sacrifice EV car scheme, giving you access to a new electric vehicle at a significantly reduced cost
- Annual leave: 33 days annual leave (including bank holidays)
- Your birthday off as an extra day of leave
- Participation in the company’s standard pension scheme with a 5% contribution
- Company off-site team building days
- Access to company e-bikes for commuting or leisure use
- Career growth supported by training, development, and compliance programmes
Applicants must have the right to work in the UK. We are unable to offer visa sponsorship for this role.
How to Apply
Please send your CV and a cover letter explaining why you’re the right fit for this role to careers@equisera.com. Applications without a cover letter will not be considered. Be sure to highlight your experience in relation to the essential skills and responsibilities outlined above.
REACH OUT
Become part of the team
As a fast-growing company, we’re always looking to expand and opportunities can become available very quickly. If there are no suitable roles listed above, but you feel you would be a good fit then you’re welcome to email us with a copy of your CV to careers@equisera.com.
