Full Stack Engineer

Peritus Partners; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid work in London

Ownership of core product

Equity package

Work with CTO and founding team

Job summary

Peritus Partners is building an AI-powered fraud detection platform backed by YC, with a hybrid London-based role focused on backend development using Node/TypeScript and Python. You’ll work on APIs and LLM integration, connecting our service to clients in a serverless AWS environment.

The founders are fintech veterans, offering ownership of the core product and the chance to shape the platform alongside the CTO and a skilled founding team.

Qualifications

• 3+ years of development experience, preferably in early-stage companies or own venture.
• Experience handling end-to-end projects as a solo developer.
• Experience developing architecture and system design.
• Build it, run it approach.
• Genuine interest in AI/LLMs with hands-on experience.
• Excellent communicator who can work with customers.

Responsibilities

• Develop the core backend platform and APIs.
• Integrate LLMs and AI features with client systems.
• Work in a serverless AWS environment.
• Collaborate directly with CTO and founding team.

Skills

Node/TypeScript

Python

React

AWS serverless

LLMs

Tools

PostgreSQL

Job description

\"Work on a real AI product… not a marketing gimmick\"

An AI powered fraud detection system is making waves within the financial sector. Already being used by several unicorn fintechs, this YC backed team are now looking to grow with a number of hires to formulate their core engineering team.

One of those hires, maybe you, will be focused on developing our core platform. The role is mostly backend focused (80%) using Node/TypeScript and Python with some React (20%) for the UI. As we are mostly a backend product, working with APIs and connecting the LLMs to our clients, we also need someone who can work in a serverless architecture, using AWS.

The founders are experienced fintech specialists having worked with someone the most exciting teams from Europe. Now we turn out attention to hopefully the next big B2B AI product, and your chance to join awaits.

Your profile:

• 3+ years of experience in development, ideally working within early-stage companies or your own business.


• Experience handling end-to-end projects as a solo developer.


• Experience developing architecture and system design.


• Adopt a build it, run it approach.


• A genuine interest for AI and LLMs, with hands on experience.


• Excellent communicator who can work with customers.

Benefits of the role:

• Hybrid work model with a central London office space.


• Ownership of how the core product will look, working directly with the CTO.


• Work alongside a highly skilled founding engineering team.


• The chance to work in a small team that has already gained customers, backed by YC and has 2M+ in funding.


• Excellent base salary + equity package.

Please note we cannot accept relocation outside of the UK or visas at this stage, we can only proceed with those that have a British passport, ILR or Global Talent Visa.