Senior Full-Stack Engineer | AI Product Scale-Up (Hybrid)

SR2 | Socially Responsible Recruitment | Certified B Corporation™; Greater London; Hybrid; GBP 90,000 - 140,000; Full time

Job summary

SR2 is seeking a Senior Full Stack Engineer for a London-based, hybrid role with a frontend bias. You’ll work across Vue.js/React, Python and FastAPI to deliver end-to-end features for an AI-driven product.

You’ll design APIs, scale services, and collaborate closely with Product and Design to shape features from idea to production. Ideal candidates have strong frontend experience, enjoy owning customer-facing features, and are comfortable contributing to Python backend development or expanding

Qualifications

• Frontend-biased experience building modern web applications.
• Experience owning customer-facing product features from concept to production.
• Comfortable contributing to Python backend development or eager to deepen skills.

Responsibilities

• Build end-to-end product features with a frontend focus.
• Work across Vue.js/React, Python and FastAPI.
• Design APIs, backend services and data models for scalable growth.
• Improve performance, usability, reliability and maintainability as the product scales.
• Collaborate with Product and Design to shape features from idea to production.
• Influence technical direction and engineering standards.
• Mentor other engineers and raise the engineering bar.

Skills

Vue.js

React

Python

FastAPI

API design

Tools

AWS

Azure

GCP

Terraform

GitHub Actions

Job description

SR2 is seeking a Senior Full Stack Engineer for a London-based, hybrid role with a frontend bias. You’ll work across Vue.js/React, Python and FastAPI to deliver end-to-end features for an AI-driven product.

You’ll design APIs, scale services, and collaborate closely with Product and Design to shape features from idea to production. Ideal candidates have strong frontend experience, enjoy owning customer-facing features, and are comfortable contributing to Python backend development or expanding