Founding Engineer (£100k-£120k + Equity) at Aviel.tech

Jack & Jill/External ATS; Greater London; Hybrid; GBP 100,000 - 120,000; Full time

Job summary

A revenue-generating Anti-Scam Intelligence company in London is looking for a Founding Engineer to drive technical direction as the first full-time engineering hire. The role involves architecting and building core systems, leveraging advanced AI, and experimenting to achieve product-market fit. Ideal candidates are experienced software engineers (5–10 years) with full-stack capabilities in Python and TypeScript/JavaScript, and hold a Master's degree in a technical field. Equity options are offered in a high-impact company.

Benefits

Equity options

Substantial Claude Code credits

Qualifications

• 5–10 years of hands-on software engineering experience, including at least 2 years in a startup.
• Strong, competent full-stack engineering skillset.
• Grounded AI optimist with a builder mentality.

Responsibilities

• Design, implement, and refactor robust database schemas and multi-API services.
• Architect and build systems with a pragmatic approach.
• Leverage agentic coding tools and cutting-edge AI.

Skills

Fluent in Python

Fluent in TypeScript/JavaScript

Full-stack engineering

Education

Master's degree in a technical discipline

Job description

This is a job that we are recruiting for on behalf of one of our customers.

To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask.

Founding Engineer

Salary: £100k–£120k + Equity

Company Description: Aviel.tech is a revenue-generating Anti-Scam Intelligence company backed by Osney Capital, Fuel Ventures, and Cambridge Angels. The company builds advanced systems that protect people and organisations from global scam operations using cutting-edge technology and applied AI.

Job Description

As the Founding Engineer, you will lead the technical direction as the first full-time engineering hire. You’ll architect and build core systems, experiment rapidly to drive product–market fit, and leverage advanced AI tooling to combat global scams—making a tangible impact on a mission-driven, high-growth company.

Location: London, UK

Why this role is remarkable

• Take critical ownership of the technical direction as the first full-time engineering hire in a high-impact, mission-driven company.
• Join a revenue-generating Anti-Scam Intelligence company backed by Osney Capital, Fuel Ventures, and Cambridge Angels.
• Shape core technology from the ground up, working with frontier AI tools, generous EMI stock options, and substantial Claude Code credits.

What you will do

• Design, implement, and refactor robust database schemas and multi-API services, ensuring scalability and cost optimisation.
• Architect and build systems with a pragmatic approach, balancing clean‑code longevity with rapid experimentation for product–market fit.
• Leverage agentic coding tools and cutting-edge AI to drive innovation in a fast-paced startup environment.

The ideal candidate

• Has 5–10 years of hands‑on software engineering experience, including at least 2 years in a startup environment.
• Is fluent in Python and TypeScript/JavaScript, with a strong, competent full‑stack engineering skillset.
• Holds a Master’s degree in a technical discipline (e.g., software engineering or computer science) and is a grounded AI optimist with a builder mentality.

How to Apply

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Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions.
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