Founding Full Stack Developer
I'm working with an early-stage UK GreenTech start-up building software that supports sustainability-focused, real-world systems, not consumer apps or vanity features.
This is a genuinely early engineering hire into a small, ambitious team where engineering decisions directly influence how the business operates and scales. If you enjoy start-up environments with autonomy, responsibility, and visible impact, this role is a strong fit.
The opportunity
They're looking for a hands-on Full Stack Developer to take ownership of an existing platform and help shape the next phase of development.
In the short term, you'll:
Own and evolve a live TypeScript-based system used daily by the business
Work closely with founders and stakeholders to stabilise and improve core functionality
As the platform matures, you'll:
Lead greenfield development of new internal tools
Build systems focused on data capture, operational insight, and reporting
Influence architecture, tooling, and technical direction as the engineering function grows
Help shape software that supports sustainability-driven outcomes
This is very much a start-up role - ambiguity, ownership, and learning are part of the job.
Tech environment
TypeScript (full stack)
MongoDB
Product-led, start-up engineering environment
Strong emphasis on reliability, data, and maintainability
What they're looking for
A Full Stack Engineer comfortable working end-to-end
Someone who enjoys early-stage start-ups and taking ownership
Experience maintaining live systems as well as building new functionality
Product-minded, pragmatic, and able to see the bigger picture
Clear communicator, comfortable working with non-technical stakeholders
Location & working pattern
UK-based
Flexible across London, Manchester, or Edinburgh
Preference for 3 to 4 days onsite, with flexibility for the right candidate
Salary
Circa £65,000, with some flexibility depending on experience
Why this role?
Join early in a mission-led GreenTech business
High ownership and influence over product and engineering decisions
Blend of stability (existing systems) and greenfield development
Opportunity to grow alongside the company as it scales
Build software that contributes to meaningful sustainability outcomes
If you're a Full Stack Engineer looking for a proper start-up role in GreenTech.
With autonomy, ownership, and room to grow: this is well worth exploring.
Happy to share more detail on a confidential basis.