Junior Software Engineer - Mission-Led Start-Up - £35k-£50k + Benefits

Opportunity Summary

Role | Junior Software Engineer (Full-Stack)

Experience | STEM degree (or equivalent) + personal projects / demonstrable passion for tech

Company | Mission-Led Start-Up

Stage | Scaling engineering team

Location | London (Hybrid)

Offer | £35,000 – £50,000 + benefits

The Opportunity

Kioni Talent is supporting a mission-led start-up in London as they expand their engineering team.

This is an exciting role for a passionate technologist who wants to work across the stack, learn from experienced engineers, and contribute to building meaningful software from day one.

You'll be working with modern web technologies — React, TypeScript, Next.js, Tailwind CSS — with the backend hosted on AWS. This is a hands-on role where you'll get real responsibility quickly, and the chance to develop your skills in a supportive, high-growth environment.

What You'll Do

• Build new features and maintain existing ones across frontend and backend systems
• Write clean, maintainable code while learning best practices from experienced engineers
• Collaborate closely with the team to deliver high-quality products
• Contribute ideas to improve both product and technical decisions
• Continue learning and developing your technical skills as the company scales

What You'll Bring

• A STEM degree (or equivalent qualification)
• Evidence of your passion for technology — whether through personal projects, internships, open-source contributions, or hackathons
• Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.)
• Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS
• A collaborative mindset and eagerness to be part of a growing team

Why Join?

• Work with a modern tech stack and learn from experienced engineers
• Be part of a mission-led business making a real impact
• Gain exposure to all parts of the product development process
• Grow your career in a high-energy, supportive environment
• Competitive salary and benefits

If you're excited by the idea of building meaningful products, learning quickly, and growing as part of a talented team — we'd love to hear from you.

Apply now to find out more about the company and the opportunity.