Senior Full Stack Software Engineer

Senior Full Stack Engineer
85,000 to 105,000

Permanent Remote, with occasional London office visits

The opportunity

Our client is hiring a Senior Full Stack Engineer to take ownership of building the next generation of customer-facing software in the energy market.

The business operates in a complex, high-value sector and is using technology, data, and strong product thinking to modernise an industry that has historically been underserved by great software.

We have already recruited 4 people into the business, and all 4 are still there. We know the company and team well and are pleased to be supporting them again on this important hire.

This is a genuinely high-impact opportunity for an experienced engineer who is equally comfortable across frontend and backend development. You will take the lead on building new products and developing the codebase, with significant autonomy over technical decisions, architecture, and delivery.

The position can be fully remote, although the business would welcome occasional visits to its Mayfair office for collaboration and team time.

The role

This is a true full stack position.

They need someone strong in React and Type Script who can build polished, reliable customer-facing software, but who is equally capable of contributing across backend services, APIs, application logic, databases, and data-rich workflows.

The platform supports complex energy processes across areas such as billing, metering, consumption, reporting, and asset performance. You will be responsible for taking those workflows and turning them into clear, scalable products that customers genuinely value.

Initially, you will lead much of the engineering work independently. You will not, however, be expected to operate without support. The business can provide access to external engineering expertise and additional coding support where needed as the platform and codebase develop.

This role offers genuine autonomy. You will have the freedom to make sensible technical decisions, shape engineering standards, and influence how the product evolves as the company grows.

What you will be doing

Leading the development of customer-facing products from initial concept through to production

Building modern frontend applications using React and Type Script Designing  and developing backend services, APIs, integrations, and application logic

Working with Python, SQL, databases, and data platforms

Taking ownership of architecture, technical decisions, and engineering standards

Turning complex energy and operational data into clear, intuitive product experiences

Working closely with product, data, leadership, and external engineering partners

Building a scalable and maintainable codebase from the ground up Helping define the future engineering team and technical direction as the business expands

What they are looking for Strong commercial experience across both frontend and backend engineering

Excellent React and Type Script capability

Strong backend development experience, ideally including Python Good experience with APIs, databases, SQL, and system integrationsA track record of leading projects or taking ownership of major technical work streams

Experience building customer-facing software from scratch

Strong product instincts and the ability to think beyond individual tickets

Confidence making technical decisions and working with a high level of autonomy

Excellent communication skills and the ability to work closely with technical and non-technical stakeholders

Personality and attitude are particularly important. They want someone positive, proactive, collaborative, and genuinely enthusiastic about building great software. The right person will bring energy to the team, take responsibility, and approach challenges with a practical and constructive mindset.

Nice to have Startup or scale-up experience

Energy, utilities, trading, sustainability, or fintech experience

Data visualisation experience

Experience working with Databricks or similar data platforms

Experience using AI-assisted development tools

Previous involvement in shaping engineering teams, standards, or architecture

Why joinA salary of 85,000 to 105,000 + Bonus The flexibility to…