Computational Scientist (£70k-£80k + Equity) at Rivan Industries

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Job Title: Computational Scientist

Salary: £70k-£80k + Equity

Company Description:
Rivan Industries - Synthetic fuel startup decarbonising heavy industry

Job Description:
As a Computational Scientist at Rivan, you will be the "puppet master" of the UK’s largest synthetic fuel plant. By building sophisticated process models and simulations on top of real-world operational data, you will identify performance ceilings and integration pinch points to direct the company’s 1000x scale-up over the next two years.

Location: London, UK

Why this role is remarkable:

• Lead the computational strategy for a company that recently deployed the UK’s largest synthetic fuel plant and is planning a 1000x scale-up.

• Exceptional compensation package including significant early-team share options and a unique £6,000 annual bonus to live near the Bermondsey HQ.

• Work on a generation-defining product that vertically integrates DAC, Alkaline Electrolysers, and Sabatier Reactors to make synthetic fuel cheaper than fossil fuels.

What you will do:

• Develop and refine first-principles process models for lime-based Direct Air Capture, integrating thermodynamics, kinetics, and transport phenomena.

• Perform dynamic process simulations and optimization studies to find fragile operations before they become issues in the physical plant.

• Build modular simulation tools using MATLAB, Aspen Plus, or Python to support techno-economic assessments and cross-functional scale-up efforts.

The ideal candidate:

• 3–7 years of experience in process modelling or chemical engineering R&D with a strong background in heat and mass transfer.

• Proficiency in industry-standard simulation software such as MATLAB, Aspen Plus, HYSYS, COMSOL, or ANSYS Fluent.

• Solid understanding of solid-gas systems, including calcination and carbonation, with a proven track record of validating models against pilot data.

Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
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