Founding Engineer | Head of Engineering

Dex; Greater London; Presencial; GBP 120.000 - 180.000; Jornada completa

Descripción de la vacante

Dex is building a regulated financial institution from first principles in London. As the founding engineer, you will own the entire technical stack, architecting, building, and securing the core platform from concept to production in a hands-on role.

You will set the engineering culture, drive decisions across infra and product engineering, translate regulatory requirements into scalable financial systems, and help recruit the founding engineering team while collaborating with the founder.

Formación

• 5-12 years of engineering experience with focus on backend systems, infrastructure and production architecture.
• Proven track record building complex, highly regulated financial infrastructure (core banking, ledger, payments).
• Experience as a founding engineer, early hire, or senior engineer scaling a high-growth fintech or infrastructure company.
• Expertise in distributed systems, cloud infrastructure, data integrity, reliability, and security.

Responsabilidades

• Architect, build, and secure the entire core banking platform from first principles.
• Own all technical decisions: infrastructure, backend systems, data integrity, and product engineering.
• Translate complex regulatory requirements into scalable, resilient, and compliant financial systems.
• Drive the product from initial concept through to production, ensuring security and reliability.
• Define the engineering culture and recruit the foundational engineering team.

Conocimientos

Backend systems

Distributed systems

Cloud infrastructure

Regulated financial infrastructure

Founding engineer experience

Descripción del empleo

We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.

The role

This team is building a regulated financial institution from first principles. Their mission: bank and finance the companies driving Europe's defence, security, and resilience buildout. A trillion-euro market is opening up as strategic autonomy becomes a priority, and traditional banks aren't built for the startups at its core. They are backed by leading investors.

As the founding engineer, you'll own the entire technical stack from day one. This means architecting, building, and securing the core platform, taking the initial product from concept to production. This is a hands-on building role, not a management position. You'll set the engineering culture and help scale the team, working directly with the founder to translate ambitious ideas into robust, regulated systems.

The work

• Architect, build, and secure the entire core banking platform from first principles.
• Own all technical decisions: infrastructure, backend systems, data integrity, and product engineering.
• Translate complex regulatory requirements into scalable, resilient, and compliant financial systems.
• Drive the product from initial concept through to production, ensuring security and reliability.
• Define the engineering culture and recruit the foundational engineering team.

What You Bring

• 5-12 years of engineering experience, with deep expertise in backend systems, infrastructure, and production architecture.
• Proven track record building complex, highly regulated financial infrastructure (e.g., core banking, ledger systems, payments).
• Experience as a founding engineer, early hire, or senior engineer scaling a high-growth fintech or infrastructure company.
• Expertise in distributed systems, cloud infrastructure, data integrity, reliability, and security.
• London-based or willing to relocate, and committed to in-person collaboration.