Customer Success Lead

Stratum is an AI startup founded by AI researchers, civil engineers and software engineers. Engineers do essential work, but too much of it is repetitive, manual, and slow. We are building the technology to change that, placing AI at the heart of every engineering discipline, dramatically accelerating how quickly things can be designed, assessed, and built. The knock-on effects matter: faster infrastructure delivery, better climate resilience, and economic growth. We are a fast growing start-up in active commercial trials, and building out our commercial team. The work you do in the next twelve months will shape the next ten years of the company, as such this is not a typical 9-5 role.

This is a hybrid role, based in London, Bristol or Bath, at the centre of our commercial engine. You will own the relationship with our early customers - running trials, supporting live flood risk projects on the platform, and feeding what you learn back into product and sales. Stratum sells to chartered engineers. We want someone who’s been there, and chose digital transformation over repetition. Someone who believes engineering can, and should, be better. If that is you, read on.

We are looking for a T-shaped individual: depth in flood risk and the discipline of civil engineering, breadth across customer success, project support, and an active hand in sales. Over time the role specialises; you will help us decide how.

What you will do:

• Run customer trials end-to-end. Scope each trial with the customer, set success criteria, train their team on Stratum, and drive towards a paid subscription. You are the customer’s main point of contact through the 30-day window.
• Support live flood risk projects on the platform. When a customer’s engineer is producing a real FRA on Stratum, you are the person they reach for. You can answer the substantive engineering question, not just the UI one.
• Be the customer voice inside the company. You sit closer to working engineers than anyone else. Engineering, product and the founders will rely on you to know what is actually painful, what is misunderstood, and what would move the next deal.
• Support sales. You will join discovery calls, run technical demos, contribute to proposals, and pick up parts of the sales motion that need engineering credibility in the room. As trials mature you will increasingly own the path from trial-end to signed Order Form.
• Build the playbook. There is not one yet. How we onboard, how we measure trial success, what a good check-in looks like, how we hand from CS to sales and back - you will write it.

What we are looking for:

• 5-6 years of relevant experience in civil engineering, environmental consultancy, or an adjacent discipline.
• Proven hands-on experience producing or reviewing assessments.
• Chartered with a relevant body - ICE, CIWEM, IEMA or similar environmental chartership.
• Strong working knowledge of Flood Risk Assessments or a closely related discipline.
• A real interest in digital technology applied to engineering.
• Customer-focused, with a technical edge.
• T-shaped. Depth in flood risk; broad across customer success, project delivery and sales.
• Confident communicator.
• Comfortable with ambiguity.

You will be a great fit if:

• You aim high and deliver.
• You are driven by a desire to be part of a high performing team that succeeds together doing career-defining work.
• You are a team player first.
• You communicate with clarity, and you understand that we only succeed together.
• You make the people around you better.

The role is not for you if:

• You need a highly structured environment.
• You are not comfortable with AI tooling.
• You want a predictable 9-to-5.

Nice to have:

• Experience at a tier-1 consultancy (Arup, Atkins, Jacobs, WSP, Arcadis or similar).
• Experience working with or inside a Lead Local Flood Authority.
• Familiarity with GIS tools and Reference Data sources (Ordnance Survey, ESRI, BGS, EA / Defra).
• Previous customer-facing, sales, or pre-sales experience in a software or consultancy context.
• Worked at an early-stage startup before and know what that actually means.

Why this role:

You will be one of the first commercial hires at a company building a product that fundamentally changes how flood risk and other assessments get produced. If you are a chartered engineer who has been wondering whether the next ten years of your career should look different from the last ten - this is that opportunity.

How to apply:

Submit your CV and cover letter to brett@stratumtech.co.uk

1. 30 minute intro call with our CRO and a co-founder.

2. 2 hour in person work Trial - a working session with our founding team. We'll give you a real, complex problem we're facing and work alongside you to solve it.