Senior Fullstack Engineer (AI-Native) in London

Senior Fullstack Engineer (AI-Native) in London

London Full-Time 60000 - 80000 € / year (est.) No home office possible
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At a Glance

  • Tasks: Build AI-driven recruitment tools and own features from concept to production.
  • Company: Join a creative, flat-structured team redefining recruitment technology.
  • Benefits: Freelance flexibility, long-term engagement, and hybrid work options.
  • Other info: Dynamic environment with a focus on reliability and innovation.
  • Why this job: Make a real impact in AI recruitment with full ownership of your projects.
  • Qualifications: Strong skills in NodeJS, NestJS, GraphQL, PostgreSQL, and LLMs.

The predicted salary is between 60000 - 80000 € per year.

We're hiring a Senior Fullstack Engineer to help build the enterprise backbone of an AI hiring intelligence platform that's redefining recruitment through voice-first, capability-based assessment. You'll join a lean creative engineering team with a flat structure, high ownership, and zero bureaucracy. The product is AI-native — and so is the team.

What you'll do:

  • Architect and ship high-concurrency APIs and event-driven systems (NodeJS, NestJS, GraphQL, PostgreSQL)
  • Define enterprise-grade architecture: GDPR-safe, audit trails, permissions, cloud-ready by default
  • Integrate LLMs (Gemini and others) into the product in a measurable, monitored, production-safe way
  • Build reliability foundations: monitoring, logging, retries, runbooks
  • Own features end-to-end — from vague brief to production

Must-haves:

  • Strong NodeJS + NestJS + GraphQL + PostgreSQL
  • Hands-on with LLMs in production (Gemini a plus)
  • Event-driven architecture, Prisma, Terraform
  • Reliability mindset: monitoring, QA, retries

Format: 100% freelance via Shakers. Long-term engagement. Hybrid in London - flexible (EU timezone). If you're AI-native in practice and want real end-to-end ownership in a high-taste studio, apply.

Senior Fullstack Engineer (AI-Native) in London employer: Shakers

As a Senior Fullstack Engineer at our innovative AI hiring intelligence platform, you'll thrive in a dynamic and creative environment that champions high ownership and minimal bureaucracy. Our hybrid work model in London offers flexibility, while our commitment to cutting-edge technology and employee growth ensures you will be at the forefront of AI development, making a meaningful impact in the recruitment landscape.

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Contact Detail:

Shakers Recruiting Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Fullstack Engineer (AI-Native) in London

Tip Number 1

Network like a pro! Reach out to your connections in the tech world, especially those who are already in AI or fullstack roles. A personal recommendation can make all the difference when you're trying to land that freelance gig.

Tip Number 2

Show off your skills! Create a portfolio that highlights your best projects, especially those involving NodeJS, NestJS, and GraphQL. Make sure to include any work with LLMs too – it’ll catch the eye of recruiters looking for that AI-native expertise.

Tip Number 3

Prepare for interviews by brushing up on your technical knowledge and problem-solving skills. Be ready to discuss your experience with event-driven architecture and reliability practices. We want to see how you think and approach challenges!

Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who take the initiative to connect directly with us.

We think you need these skills to ace Senior Fullstack Engineer (AI-Native) in London

NodeJS
NestJS
GraphQL
PostgreSQL
LLMs (Large Language Models)
Event-driven Architecture
Prisma

Some tips for your application 🫡

Show Your Passion for AI:When you're writing your application, let us see your enthusiasm for AI and how it drives your work. Share specific examples of projects where you've integrated AI technologies, especially LLMs, to demonstrate your hands-on experience.

Highlight Your Fullstack Skills:Make sure to showcase your expertise in NodeJS, NestJS, GraphQL, and PostgreSQL. We want to know how you've used these technologies in past projects, so don't hold back on the details—give us the juicy bits!

Emphasise Ownership and Reliability:We love engineers who take ownership of their work. In your application, talk about how you've managed features from start to finish and how you ensure reliability in your systems. Mention any monitoring or QA practices you've implemented.

Apply Through Our Website:Don't forget to apply through our website! It’s the best way for us to keep track of your application and ensures you get all the updates. Plus, we love seeing applications come directly from our site!

How to prepare for a job interview at Shakers

Know Your Tech Stack Inside Out

Make sure you’re well-versed in NodeJS, NestJS, GraphQL, and PostgreSQL. Brush up on your experience with LLMs, especially Gemini, as they’ll want to see how you can integrate these into their product.

Showcase Your Problem-Solving Skills

Prepare to discuss specific challenges you've faced in previous projects, particularly around building high-concurrency APIs or event-driven systems. Use the STAR method (Situation, Task, Action, Result) to structure your answers.

Demonstrate a Reliability Mindset

Be ready to talk about how you ensure reliability in your projects. Discuss your experience with monitoring, logging, and creating runbooks. They’ll appreciate candidates who prioritise quality assurance and have a proactive approach.

Embrace the Flat Structure

Since the team operates with a flat structure and high ownership, be prepared to share examples of how you’ve taken initiative in past roles. Highlight your ability to work independently while still being a team player.