Senior Full-Stack Engineer: Payments at Scale & Autonomy

Jack & Jill; Greater London; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Equity

Job summary

Tab in London is seeking a Full Stack Developer to join a profitable, lean team building a high-scale payments and discovery platform. You will work across Python (FastAPI/Django) and Svelte to handle real-time payments and a multi-currency discovery engine.

You’ll own scalable backend and frontend components, contribute to architecture decisions, mentor juniors, and help grow a product processing thousands of payments per hour across 100 currencies.

Qualifications

• Has at least 4 years of full-stack experience building web applications with an object-oriented language and modern frontend frameworks like Svelte or React.
• Demonstrates proficiency across the entire stack, including Python backend services, PostgreSQL databases, and cloud infrastructure on AWS.
• Enjoys a fast-paced environment where they can move quickly, design with intent, mentor junior members, and apply the right tool to every job.

Responsibilities

• Develop and scale backend services using Python, FastAPI, and Django to handle a 10x increase in payment volume and transaction complexity.
• Build and iterate on modern, responsive user interfaces using Svelte and TypeScript for a discovery platform serving millions of global travellers.
• Architect and maintain robust cloud infrastructure on AWS, ensuring high availability, security, and performance for critical payments systems.

Skills

Full-stack development

Python

Svelte

TypeScript

Mentoring

Tools

Django

FastAPI

PostgreSQL

AWS

React

Job description

Tab in London is seeking a Full Stack Developer to join a profitable, lean team building a high-scale payments and discovery platform. You will work across Python (FastAPI/Django) and Svelte to handle real-time payments and a multi-currency discovery engine.

You’ll own scalable backend and frontend components, contribute to architecture decisions, mentor juniors, and help grow a product processing thousands of payments per hour across 100 currencies.