Technical Lead – Software Engineering (Golang – Backend) 
Location: London (UK) or Frankfurt (Germany) 
Working Style: Hybrid – predominantly remote working with office presence typically once a week 

About ESG Book 

Founded in 2018, ESG Book is a global leader in sustainability data and technology. We’re a fast-paced and exciting organisation that blends cutting-edge tech with proprietary research. Our team thrives on an entrepreneurial spirit and a dynamic, collaborative environment. 

Following a successful funding round in early 2025, ESG Book is continuing to expand its next-generation technology capabilities, helping clients navigate increasingly complex sustainability requirements while driving global growth in tech-enabled ESG data solutions. 

We’re proud of our inclusive and diverse workplace, where innovation is encouraged, and personal growth is supported. Join us, and you’ll be part of a team that celebrates individuality while working together to create a more sustainable future for financial institutions and beyond. 

Why Join ESG Book as a Technical Lead? 

As a Technical Lead, you’ll take a leading role in designing and building scalable, high-performance software solutions that underpin our mission. You'll work alongside a brilliant team of talented engineers to develop a cutting-edge SaaS platform for ESG data exchange using an event-driven architecture. 

Our culture is built on autonomy, trust, and innovation giving you the space to do your best work and make a real impact. 

What You’ll Gain 

Autonomy & Influence:  

• Own your projects, make key technical decisions, and shape the direction of our tech solutions. 

A High-Performing Team:  

• Be part of a forward-thinking group that values continuous improvement and encourages innovation. 

Career Progression:  

• Enjoy clear growth paths, regular performance reviews, and opportunities to step into broader or leadership roles. 

Learning & Benefits:  

• Access an annual training budget, team support, and a comprehensive benefits package including equity options aligned with ESG Book’s growth and purpose. 

Your Day-to-Day 

Technical Leadership:  

• Designing, building, and deploying robust software applications including event-driven microservices, infrastructure, monitoring tools, and platform tooling. 

• Working closely with your Engineering Manager and Product Manager to guide, support, and motivate your team in building high-quality, secure, and performant software that meets user and business needs. 

• Leading and contributing to technical designs, providing thoughtful input and helping your teammates make sound architectural decisions while identifying and addressing potential future challenges within the team’s scope. 

• Promoting engineering best practices within the team, helping to raise the bar on code quality, testing, and delivery processes, while sharing insights and approaches that can positively influence the wider engineering organisation. 

Cross-Functional Collaboration:  

• Working closely with colleagues across disciplines from product to data engineering, to deliver high-quality solutions. 

Mentoring:  

• Supporting and guiding team members, sharing knowledge and helping others grow in a collaborative and inclusive environment. 

Driving Improvement:  

• Constantly looking for ways to evolve our systems and processes in line with industry trends. 

What You’ll Bring (and build on your existing knowledge): 

Technical Know-How:  

• Develop scalable applications using Golang and Angular, with Postgres and Kafka at the core. You build it, you run it and help evolve our infrastructure-as-code setup on GCP using Terraform. 

Microservices Mastery:  

• Design and implement scalable, event-driven architectures to create resilient systems. 

Containerisation:  

• Use Kubernetes and Docker to manage cloud-native applications efficiently and reliably. 

Why ESG Book? 

A Mission-Led Culture:  

• More than just a company, ESG Book is a community committed to sustainability and innovation. 

Welcoming Environment:  

• You’ll work with a diverse, inclusive team where everyone's voice matters. 

Growth Opportunities:  

• With structured reviews and career planning, you’ll have space to grow into senior or leadership roles. 

Equity & Benefits:  

• Receive a competitive salary and equity options. Your success is our success. 

Apply Now 

If you’re excited to be part of a purpose-driven company that values your contributions and offers room to grow, we’d love to hear from you. Join ESG Book and help shape a world that values sustainable finance, supported by a team that values collaboration, respect, and progress.