Tech Lead (Senior Software Engineer)

ACT Group; City of London; Hybrid; GBP 85,000 - 100,000; Full time

Job summary

A technology firm in London seeks an experienced engineer to lead a team focused on building features for sustainability products. The ideal candidate has 5+ years of engineering experience, deep expertise in Go or React, and a passion for impactful software development. This full-time role offers a competitive salary, flexible hybrid work, and is part of a collaborative culture aimed at climate impact.

Benefits

Competitive salary

Flexible / hybrid working

Generous annual leave

Learning and conference budget

Qualifications

• 5+ years of engineering experience.
• Deep expertise in Go or React and willingness to stretch across both.
• Proven experience leading projects or small teams.
• Strong technical judgment and architectural understanding.

Responsibilities

• Lead a small, fast‑moving team building features.
• Set technical direction and ensure high quality delivery.
• Work closely with leadership to translate business goals into technical roadmaps.
• Drive adoption of AI‑assisted development.

Skills

Engineering experience

Expertise in Go or React

Project leadership

Technical judgment

Startup experience

Cloud infrastructure familiarity

Job description

About Green Project

At Green Project Tech, we build 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), feeding into Account50 and Act50 and powering a full‑stack sustainability platform used by enterprises and SMEs across the GPT / ACT ecosystem.

Responsibilities

• 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 shape the technical culture as we scale.

Requirements

• 5+ years of engineering experience.
• Deep expertise in Go or React (and 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 is a plus.
• Exposure to climate, ESG, or sustainability domains is a plus.

Salary Range

The base pay range for this position is £85,000 – £100,000 annually plus discretionary bonus; base pay offered may vary depending on location, job‑related knowledge, skills, and experience.

What We Offer

• 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.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Information Technology

Diversity & Inclusion

Green Project Technologies, Inc is an equal‑opportunity employer committed to ensuring equal opportunity for all applicants regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or other legally protected characteristics.