Tech Lead (Senior Software Engineer)

• Lead a small, fast-moving team building features across Engage50 and Product50.
• Set technical direction, uphold engineering standards, and ensure high-quality delivery.
• Balance hands-on coding with mentoring, design reviews, and coordination across product and design.
• Work closely with leadership to translate business goals into technical roadmaps.
• Drive adoption of AI-assisted development to boost productivity and creativity across the team.
• Partner daily with product managers, designers, and other engineers to turn ideas into shipped features - and help shape the technical culture of the company as we scale.

• 5+ years of engineering experience
• Deep expertise in Go or React (and a willingness to stretch across both)
• Proven experience leading projects or small teams
• Strong technical judgment and architectural understanding
• Prior startup experience and comfort with ambiguity
• Motivation to build meaningful software for sustainability
• Experience scaling teams in a startup environment is a plus
• Familiarity with cloud infrastructure, deployment automation, and monitoring are a plus
• Exposure to climate, ESG, or sustainability domains is a plus

The base pay range for this position is £85,000 - £100,000 annually + discretionary bonus; however, base pay offered may vary depending on location, job-related knowledge, skills, and experience., * Competitive salary

• Flexible / hybrid working (London-based preferred, occasional remote)
• Generous annual leave and public holidays
• Budget for learning and conferences
• Collaborative, high-ownership culture built around climate impact

About Green Project: At Green Project Tech, we're building the intelligence layer behind sustainable supply chains. Our UK team leads on Engage50 (supplier engagement for enterprises) and Product50 (efficient PCF / carbon footprint calculation at scale). These tools feed into Account50 and Act50, powering a full-stack sustainability platform used by enterprises and SMEs across the GPT / ACT ecosystem. ACT, our parent company, is a global leader in sustainable products - giving us reach and credibility, with the autonomy and excitement of a startup. Green Project is looking for a Tech Lead (Senior Software Engineer) to lead a small, high-impact engineering team building features that power Engage50 and Product50 - the products helping enterprises measure and reduce their carbon footprint. You'll set the technical direction, mentor others, and use AI-assisted development to multiply the team's speed and impact. This is a hands-on leadership role with real product ownership and a clear mission: accelerate the world's transition to net-zero.