Senior Backend Engineer

ISL; Bristol; On-site; GBP 63,000 - 75,000; Full time

Job summary

A climate technology company in Bristol is seeking a Senior Backend Engineer to design and scale cloud-based platforms for methane detection. With a focus on sustainability, you'll develop resilient backend services to turn complex data into insights, contributing directly to reducing greenhouse gas emissions. The role offers a competitive salary of up to £75,000 and a hybrid working model with significant responsibilities in a fast-growing team.

Benefits

Pension contributions

25 days holiday plus 8 bank holidays

Participation in EMI share scheme

Qualifications

• 7+ years' backend engineering experience.
• Strong experience with modern Java (21+) and RESTful frameworks.
• Solid understanding of SQL and NoSQL databases.
• Cloud deployment experience (Azure preferred).
• Experience with CI/CD, containerization, and testing frameworks.
• Clear communicator, able to explain complex ideas and collaborate across teams.
• Passion for technology that drives sustainability and positive environmental impact.

Responsibilities

• Design, build, and scale cloud-based platforms for methane detection.
• Work with high-volume data from mobile survey equipment.
• Develop performant backend services for actionable insights.

Skills

Modern Java (21+)

RESTful frameworks

SQL and NoSQL databases

Cloud deployment (Azure preferred)

CI/CD

Containerization

Testing frameworks

Clear communicator

Passion for technology driving sustainability

Job description

Senior Backend Engineer

Bristol (Hybrid - 3 days per week)

Up to £75,000 (BOE)

ClimateTech

Want to use your backend skills to fight climate change?

At Bohr, your code won't just power systems, it will directly protect the planet. We're tackling one of the world's most urgent challenges: helping Europe's gas networks detect and repair methane leaks faster, reducing greenhouse gas emissions and supporting the transition to a zero‑carbon future.

About Bohr

Everything we do at Bohr is driven by a single purpose: to decarbonise energy through innovation. We're accelerating the energy transition through the Hydrogen Economy and Zero‑Carbon Gas Grids, tackling complex gas measurement and control challenges along the way.

Through our methane emissions division, Tectrac, we combine cutting‑edge mobile leak detection technology with advanced analytics and GIS‑led insights. Our platform helps utilities spot the largest methane leaks quickly, repair them efficiently, and dramatically reduce greenhouse gas emissions.

The Role

We're looking for a Senior Backend Engineer to help design, build, and scale the cloud‑based platforms that power our methane detection and emissions intelligence systems. You'll work with high‑volume data from mobile survey equipment as well as telemetry from low‑cost sensors across the gas network, developing performant, resilient backend services that turn complex data into actionable insights for utilities.

You’ll be part of a lean, collaborative startup team where innovation, reliability, and real‑world impact all matter. Occasionally you may contribute to 3rd‑line support, giving you insight into how your systems perform in production, and you may engage with customers and partners to help translate technical possibilities into practical solutions.

What Success Looks Like

You’ll build backend systems that integrate survey, geospatial, and emissions data into a single, trusted platform. Fast, reliable releases, scalable cloud infrastructure, and mentoring peers will be key.

Most importantly, your work will have a measurable impact, helping gas networks prioritise repairs and reduce methane emissions.

What We’re Looking For

We’re after someone technically strong, environmentally motivated, and excited by solving complex problems that have a real‑world impact.

Essential

• 7+ years' backend engineering experience.
• Strong experience with modern Java (21+) and RESTful frameworks.
• Solid understanding of SQL and NoSQL databases.
• Cloud deployment experience (Azure preferred).
• Experience with CI/CD, containerisation, and testing frameworks.
• Clear communicator, able to explain complex ideas and collaborate across teams.
• Passion for technology that drives sustainability and positive environmental impact.

Desirable

• Experience with PostGIS, time‑series or geospatial data.
• Familiarity with distributed microservices architectures.
• Exposure to methane detection, energy, or environmental data.
• Lean development mindset and experience mentoring others.

Why Join Bohr?

At Bohr, your work really matters, you'll make a measurable difference in the fight against climate change, play a central role in helping the UK and Europe meet net zero targets, and join a fast‑growing company where your backend expertise shapes core product functionality and long‑term operational excellence.

You’ll also enjoy

• Hybrid working with autonomy and flexibility in our Bristol office
• Up to £75,000 (BOE)
• Pension contributions
• 25 days holiday plus 8 bank holidays
• Participate in our EMI share scheme.

If you're a senior backend engineer who wants to combine technical challenge with environmental impact, this is your chance to help build systems that protect the planet and transform energy networks for a sustainable future.