Rivan

Rivan Industries () is a synthetic fuel company designed to decarbonise heavy industry. We aim to make synthetic fuel cheaper than fossil fuels and sustain life on earth by keeping the CO2 locked underground. We've design and manufacture modular synthetic fuel plants consisting of a DAC system, an Alkaline Electrolyser, and a Sabatier Reactor, vertically integrating with off-grid DC solar and the European gas-grid. Here's our entire business plan . We've recently deployed the UK's largest synthetic fuel plant and are planning to 1000x this scale in the next 2 years. Moving atoms around takes time. Bits are faster. We're looking for a computational scientist to take the reins by building models and simulations on top of our operational data to direct where we spend our next resources. We need a curious mind that wants to find every integration pinch point, performance ceiling, and fragile operation before it becomes an issue. If you want to be the puppet master that underpins one of the potentially most impactful products of a generation, apply below. The role: Develop and refine process models for Rivan's lime-based Direct Air Capture (DAC) process, integrating thermodynamics, kinetics, and transport phenomena Perform first-principles heat and mass transfer calculations, dynamic process simulations, and optimisation studies. Work cross-functionally with experimental and design teams to validate models against empirical data, refine process understanding, and inform plant operation and scale-up. Build and maintain modular simulation tools (e.g. MATLAB, Aspen Plus, COMSOL, or custom Python models) to support techno-economic and performance assessments. Core skills: 3-7 years experience in process modelling, computational science, or chemical/process engineering R&D Bachelor's/Master's in Chemical Engineering, Process Systems Engineering or related field (PhD advantageous). Proven experience with MATLAB, Aspen Plus/HYSYS, and/or COMSOL, ANSYS Fluent, or Python. Strong background in heat and mass transfer, reaction engineering, and first-principles modelling (PDEs, reaction kinetics, etc.). Experience in model validation with lab or pilot data; understanding of solid-gas systems (calcination, hydration, carbonation); and past-demonstration of system optimisation preferred. Specifics: £70-80k Salary depending on experience Significant share options as part of the early team In-person work at our HQ in Bermondsey, South-East London Extensive relocation support, including £6000 per year extra to live close to our HQ

A leading synthetic fuel company in Greater London is seeking a Senior Power System Engineer to design large-scale solar arrays and power distribution systems. The role includes integrating the solar array with a DC electrolyser and thermal reactor, along with optimizing costs and layouts. Ideal candidates will have over 5 years of experience and be familiar with certifying solar panels. The salary ranges from £80,000 to £100,000, with significant share options and in-person work at HQ in Bermondsey.

Rivan Industries () is a synthetic fuel company designed to decarbonise heavy industry. We aim to make synthetic fuel cheaper than fossil fuels and sustain life on earth by keeping the CO2 locked underground. We design and manufacture modular synthetic fuel plants consisting of a DAC system, an Alkaline Electrolyser, and a Sabatier Reactor, whilst vertically integrating with off-grid DC solar and the European gas-grid. Here's our entire business plan . We've recently deployed the UK's largest synthetic fuel plant and are planning to 1000x this scale in the next 2 years. Rivan runs on DC solar. We're one of the only products that wants a DC electron as far away from an electrical grid as possible. Almost everything on our product depends on a seamless transition of electronics from a panel through to our thermal reactor and electrolyser. We're on the lookout for a Senior Power System engineer to take the horns of our DC solar array design, remove all the entropy, and make the safety and simplest distribution of electricity possible. Make sure you're the engineer that designs the solar power system that enables the transition of every last joule of energy away from fossil sources. The role: Designing >1MW scale solar array and power distribution Designed to directly integrate with a DC electrolyser, and thermal reactor (heating elements) The array will also integrate with a high-power inverter for downstream AC distribution Combiner box design and optimisation Cable layout, sizing and containment designs Solar array cost optimisation Modelling different configurations and assembly methods Core skills: 5+ years experience Certifying solar array and combiner panels to BS & IEC standards Specifics: £80 - 100k Salary depending on experience Significant share options as part of the early team In-person work at our HQ in Bermondsey, South-East London

Rivan Industries () is a synthetic fuel company designed to decarbonise heavy industry. We aim to make synthetic fuel cheaper than fossil fuels and sustain life on earth by keeping the CO2 locked underground. We've design and manufacture modular synthetic fuel plants consisting of a DAC system, an Alkaline Electrolyser, and a Sabatier Reactor, vertically integrating with off-grid DC solar and the European gas-grid. Here's our entire business plan . We've recently deployed the UK's largest synthetic fuel plant and are planning to 1000x this scale in the next 2 years. Rivan is bottlenecked by information. With every test we run, or hypothesis we disprove, we get closer to our engineering requirements. This requires a meticulous and systematic approach to a hypothesis > test > iterate process. We're on the lookout for a Chemical Lab Technician that can rapidly accelerate our testing, deconvolute the outputs into something that makes sense, and drive us towards a beautiful design. Our R&D facility is waiting for you. The role: Support experimental work underpinning Rivan's lime-based DAC process through hands-on laboratory testing, apparatus assembly, and data analysis. Design, build, and operate lab and bench-scale experiments involving solid-gas reactions (hydration, carbonation, calcination), and gas separation. Execute test plans, collect and analyse data, and present findings to the broader R&D and engineering teams. Contribute to experimental design using Design of Experiments (DoE) principles and assist in developing safe, repeatable test procedures. Core skills: 2-5 years laboratory or pilot-scale experience in chemical/process engineering or applied chemistry environment. HNC/HND, BSc, or equivalent in Chemistry, Chemical Engineering, or related discipline. Hands-on experience with experimental setup design, instrumentation, and data collection Familiarity with gas-solid systems, e.g. adsorption, Competence in data analysis and report generation (Excel, MATLAB, Python, or equivalent). Working knowledge of health and safety in chemical laboratories and pilot environments. Specifics: £40k Salary depending on experience Significant share options as part of the early team In-person work at our HQ in Bermondsey, South-East London

A leading synthetic fuel company in Greater London is seeking a Chemical Lab Technician to support experimental work on its lime-based DAC process. The role involves hands-on laboratory testing, data collection and analysis, and collaboration with the R&D team to design effective experiments. Candidates should have 2-5 years of relevant experience, an appropriate degree, and a solid understanding of health and safety in chemical labs. The position offers a salary of £40k and share options for early team members.