Founding Engineer - ID47791

Are you ready to build something from the ground up?

Do you want true ownership over architecture, product, and technical direction?

Curious about what it’s like to be the first engineer in a high-growth, revenue-generating business?

(Full Stack, AI)

Location: 4 days per week onsite (Hertfordshire area), with flexibility to work remotely on Fridays

The Opportunity

Our client is at an exciting inflection point, already generating revenue, and now investing in building a powerful, scalable platform from scratch.

This is not a typical engineering role. You will be stepping in as the first technical hire, working directly with experienced founders to shape, architect, and deliver a multi-product platform designed to operate across multiple brands, regions, and user experiences.

You will be building something ambitious: a highly configurable, high-performance system supporting large-scale user activity, complex business logic, and seamless integrations, while leveraging modern AI-assisted development tools to accelerate delivery.

Why This Role is Great

This role is designed for engineers who want more than just tickets and sprint cycles. It is about ownership, creativity, and impact:

• Build from zero to scale

Design and deliver a full platform architecture from first principles

• Shape technical direction

Influence system design across multi-tenant architecture, global configurations, and scalability

• Master modern full-stack development

Work across backend services, frontend applications, and infrastructure

• Solve complex, real-world challenges

Develop systems handling multiple currencies, jurisdictions, and integrations

• Work with diverse integrations

Connect external platforms including payments, CRM systems, and third-party services

• Leverage AI development

Use tools like GPT, Claude, and Cursor to enhance productivity and innovation

• Own the full lifecycle

From architecture and build to deployment, monitoring, and optimisation

About You

You are someone who thrives in fast-moving environments and enjoys building things properly from the ground up.

You will likely bring:

• Strong experience building production-grade web applications
• Confidence designing scalable backend architectures
• Hands-on expertise across the full stack (frontend and backend)
• Experience working with APIs and third-party integrations
• Solid understanding of relational database design, ideally PostgreSQL
• Comfort using AI tools as part of your development workflow

You may also have experience with:

• Multi-tenant SaaS or marketplace platforms
• Payments, wallets, or financial systems
• High-traffic, high-concurrency environments
• Internationalisation including multi-language and multi-currency
• Event-driven or distributed systems
• Internal tooling or admin platforms

The Environment

Our client offers a high-energy, founder-led environment where collaboration and ambition are at the core:

• Dedicated workspace with no hot-desking
• Complimentary breakfast and lunch
• Onsite facilities including games and breakout areas
• Free parking
• A culture built around pace, ownership, and innovation

Diversity and Inclusion

Our client and the recruiting agency are committed to building inclusive teams. Applications are welcomed from individuals of all backgrounds, experiences, and perspectives. We believe diverse teams create better products and stronger businesses.