Software Engineer – Early-Stage Start-up – up to £85k + significant equity

JR United Kingdom; City Of London; On-site; GBP 65,000 - 85,000; Full time

Job summary

A leading early-stage deep tech start-up based in London is seeking a Software Engineer to join their engineering team. This role offers the opportunity to work closely with the founders, tackle complex challenges, and shape product development in a fast-paced environment. If you have 3+ years of engineering experience and a passion for technology, apply now to join this exciting journey.

Qualifications

• 3+ years of engineering experience required.
• Solid understanding of computing fundamentals.
• Experience with one backend language (e.g., Python, Java, Go).

Responsibilities

• Build and scale the platform across backend and frontend systems.
• Write clean, maintainable code and solve complex technical challenges.
• Contribute to key technical builds during crucial growth phases.

Skills

Engineering experience

Backend language experience

Proactive mindset

Curiosity about new technologies

Job description

Social network you want to login/join with:

Software Engineer – Early-Stage Start-up – up to £85k + significant equity, london (city of london)

col-narrow-left

Client:

Location:

london (city of london), United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

col-narrow-right

Job Views:

4

Posted:

18.06.2025

Expiry Date:

02.08.2025

col-wide

Job Description:

Opportunity & Requirement Summary

? Role | Software Engineer

? Company | Early-Stage Deep Tech Start-Up

? Location | London (Office-based – 5 days per week)

Detailed Overview

Kioni Talent is supporting an early-stage deep tech start-up in London as they continue to grow their engineering team.

This is an exciting opportunity for an enthusiastic Software Engineer who loves solving complex problems and wants to work on challenging technical problems from the ground up. You’ll be joining a small team, working closely with experienced founders and helping shape how the product and platform evolve.

It’s a great fit for someone who stays up to date with advancements in technology, enjoys learning fast, and thrives in a fast-paced, hands-on environment.

What You’ll Do

• Build and scale the platform across both backend and frontend systems
• Write clean, maintainable code and solve complex technical challenges
• Contribute ideas to product and technical decisions
• Work closely with the founders and broader team on new features and improvements
• Help shape engineering best practices as the company scales

? Your Impact

• Contribute to key technical builds during a crucial growth phase
• Help define how things are built, tested, and deployed
• Be part of a high-calibre team with the ambition to scale quickly

?? What You’ll Need

• 3+ years of engineering experience
• Solid understanding of the fundamentals of computing
• Experience with at least one backend language (e.g. Python, Java, Go)
• A proactive mindset and ability to thrive in an early-stage environment
• Curiosity and a passion for keeping up with new technologies and best practices

If you’re excited by the idea of joining a growing team, solving interesting problems, and building something from scratch. We’d love to hear from you!

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

(Software Engineer, Full Stack Developer, Deep Tech, Start-Up, Backend Developer, Frontend Developer, Python, React, TypeScript, Java, OOP, London Tech, Early Stage)