Full-stack Engineer London

Model ML is the AI workflow builder transforming how major financial institutions produce and validate client-ready work. Model ML converts complex, manual processes into fully automated AI systems that scale across global teams. In under a year, Model ML has become one of the fastest growing enterprise AI platforms worldwide and recently closed a $75 million Series A, one of the largest fintech Series A rounds ever. The round was backed by FT Partners, Y Combinator, LocalGlobe, QED, 13books, and other top global investors, bringing total funding to $90 million.

About the role

We are seeking a highly skilled Full-Stack Engineer with at least 5 years of professional experience to join our growing team. The ideal candidate has a strong background in building modern web applications, is fluent in React/Next.js, experienced with backend development (Python preferred), and has hands-on exposure to infrastructure and DevOps practices.

You will play a key role in designing, developing, and maintaining high-quality, scalable, and secure systems across the stack — from frontend interfaces to backend APIs, databases, and deployment pipelines.

Key Responsibilities

Design, develop, and maintain frontend applications using React and Next.js.

Build, test, and deploy backend services and APIs (Python/Django/FastAPI preferred, but other languages/frameworks welcome).

Collaborate with founders, growth team, designers, and other engineers to deliver high-impact features.

Ensure scalability, performance, and security across the stack.

Implement CI/CD pipelines, automated testing, and monitoring solutions.

Contribute to infrastructure planning, deployment, and optimization in cloud environments (AWS, GCP, or Azure).

Mentor junior developers and promote engineering best practices.

Required Qualifications

5+ years of professional software engineering experience.

Proven experience with React and Next.js in production environments.

Solid understanding of relational and/or NoSQL databases.

Experience with Git and collaborative development workflows.

Knowledge of cloud infrastructure, containerization (Docker, Kubernetes), and CI/CD pipelines.

Strong problem-solving skills and a passion for building great products.

Experience implementing background workers and task queues (Celery, RQ, etc.).

Proficiency with Redis for caching, pub/sub, or job queues.

What We Offer:

You will be reporting directly to the founders, who have two successful venture-backed exits under their belt.

Competitive salary + equity

Supportive and innovative work environment.

Opportunity to help shape and build a generational company

What you can expect:

It won't be easy; in fact, it will be very hard.

BUT, it will be a lot of fun.

You need to be comfortable with being uncomfortable; timelines will change, priorities will most likely shift.

To conclude, we're building a team of like-minded, incredibly smart, tenacious individuals with relentless work ethic and focus, all driving towards our very clear revolutionary mission. If you match this description, buy into that mission and you're at a career stage where you're ready to make your defining statement to the world.