Mid-level JavaScript Engineer
Skills & stack
About the role
Mid-level JavaScript Engineer at FinStream. This is a full-time hybrid role in London, United Kingdom. The work centers on frontend JavaScript, with skills in Vanilla JS, Webpack, Event Loop, and CI/CD.
Work format
Hybrid work in London, United Kingdom. Full-time employment.
Skills and tools
- Vanilla JS
- Webpack
- Event Loop
- CI/CD
What to prepare
- Prepare a short walkthrough of a frontend project built with Vanilla JS.
- Be ready to explain how you have used Webpack in a real project.
- Review how you work with the Event Loop and CI/CD in practice.
Requirements
- Strong Vanilla JS skills for frontend development.
- Webpack knowledge for building and bundling JavaScript code.
- Understanding of the Event Loop and how JavaScript runs.
- CI/CD experience for supporting delivery workflows.
Apply for this role
Send a short intro — the hiring team will review and respond.
FinStream — European payments company.
- Location
- London, United Kingdom
- Team size
- 51-200
- Remote policy
- Hybrid
Overview
- Seniority
- Middle
- Remote policy
- Hybrid
- Location
- London, United Kingdom
- Employment
- Full-time
- Salary (market estimate)
- $7,600–9,300/mo
- Posted
- Jul 03, 2026