Junior CTO / Full Stack JavaScript Developer

Company: Quant Capital
Apply for the Junior CTO / Full Stack JavaScript Developer
Location: London
Job Description:

Overview

In this role you contribute to a growing online platform, shaping both frontend and backend across a range of projects. You collaborate closely with a small team and have exposure to leadership, including the CEO, while tackling greenfield work and API development. You will work with modern JavaScript stack to deliver high-demand website features and improvements. The role blends hands-on development with ownership over parts of the business as it scales.

Pay / Benefits

  • financial rewards
  • family-oriented culture

Responsibilities

  • Work on a wide range of projects for the parent company
  • Develop APIs and frontend features using React
  • Manage outsourcing and coordinate with external teams
  • Take ownership of area(s) of the business and drive ideas to implementation
  • Maintain and improve systems based on user feedback
  • Collaborate with cross-functional teammates to achieve objectives
  • Contribute to the evolution of the tech stack as the platform grows

Key requirements

  • Good knowledge of Node.js
  • Good knowledge of React
  • HTML / CSS / SASS
  • TypeScript (comfortable with vanilla JavaScript)
  • Working knowledge of MongoDB (or similar NoSQL)
  • Comfortable with Linux (daily usage and system administration)
  • Learning mindset in a fast-paced environment
  • Strong collaboration with close-knit team
  • Hands-on, tech-driven motivation
  • Node.js
  • React
  • MongoDB

Posted: September 14th, 2026