Junior Software Engineer: End-to-End AI Features

FlightStory; Greater London; On-site; GBP 30,000 - 47,000; Full time

Job summary

Steven.com in London is seeking a Junior Software Engineer to help design, build, and ship frontend, backend, and infrastructure features. You will own components end-to-end, prototype quickly, and contribute to the product flywheel with a focus on reliable performance.

You will work across internal products, external production, and occasional moonshots, with ownership and autonomy typically seen in more senior roles. A passion for AI/ML and practical experimentation is valued.

Qualifications

• Proven ability to design and ship end-to-end features across frontend, backend, and infrastructure.
• Strong experience with TypeScript/React and modern full-stack development.
• Portfolio of self-directed projects or 1–3 years professional experience in the field.

Responsibilities

• Design, build, and ship end-to-end product features across frontend, backend, and infrastructure.
• Prototype quickly, run experiments, and move core product metrics.
• Own systems in production, including debugging, performance, and reliability.
• Use AI/ML tools and LLM-based APIs to build intelligent product experiences.
• Contribute to engineering culture through code quality, documentation, and active review participation.

Skills

TypeScript

React

Node.js

Python

JavaScript

APIs design

SQL

NoSQL

GitHub

LLM integration

Education

CS/Math degree

Tools

SQL

NoSQL

LLM APIs

Job description

Steven.com in London is seeking a Junior Software Engineer to help design, build, and ship frontend, backend, and infrastructure features. You will own components end-to-end, prototype quickly, and contribute to the product flywheel with a focus on reliable performance.

You will work across internal products, external production, and occasional moonshots, with ownership and autonomy typically seen in more senior roles. A passion for AI/ML and practical experimentation is valued.