Web Developer jobs in United Kingdom

Senior Software Engineer

Help shape the next generation of data solutions for the global energy industry! We're hiring a Senior Software Engineer for an in-house role in ours product division!

Join a collaborative and forward-thinking team working on CDM - a strategically important initiative with strong executive support and a clear path for future growth. CDM is designed to modernize and unify data management workflows across geoscience applications, with a focus on modularity, scalability, and deployment flexibility. You’ll be part of a close-knit development team (~3 developers, tester, and shared product leadership), working alongside a second team focused on evolving one of our existing products into a CDM module. The teams share a backlog and plan together, and mobility between them is encouraged.

Ownership matters here! The team has full control over the product’s direction, architecture, and delivery. Your voice will shape what we build and how we build it. Our customers operate in complex data landscapes, often spanning petabytes of data across both local and cloud environments. This presents unique challenges, and opportunities, for building robust, scalable, and high-performance solutions.

This position is based in either our London or Oslo office. While primarily on-site, we offer flexibility for remote work when needed.

• Building backend services in Go and C#, contributing to a modular, service- and event-driven architecture.
• Using NATS for distributed messaging and Protobuf for consistent data contracts across components.
• Working with a Vue-based frontend and integrating it with backend services.
• Managing local SQLite databases and integrating them with Grafana dashboards and interactive Vue pages.
• Building CI/CD pipelines to support development and deployment workflows.
• Collaborating on authentication and RBAC strategies (e.g., Windows Auth, OAuth, OIDC).
• Writing clean, maintainable code and following best practices. Communicating clearly with team members and stakeholders.
• Contributing to architectural decisions and helping shape the future of CDM.

We’re seeking an early senior developer (6–8 years of experience) who thrives in a collaborative environment and enjoys solving complex technical challenges. If you're passionate about building scalable systems and want to work on a high-impact product with a bright future—and real ownership—we’d love to hear from you. You'll truly catch our interest if you can highlight how you bring solid experience within:

• Backend development (also having frontend experience is a plus)
• At least one modern programming language
• A Vue-like framework (e.g. modern Typescript frameworks such as Angular or React)
• Relational databases (e.g. SQL Server, SQLite, PostgreSQL etc) and understanding of database design, optimization and query building.
• Familiarity with Python
• Basic understanding of service-oriented architecture (SOA) and event-driven architecture, including some exposure to message brokers (e.g., NATS, RabbitMQ, Kafka)
• Designing and developing RESTful APIs, with an understanding of basic API security and authentication mechanisms.
• Version control systems (e.g., Git) and some understanding of continuous integration/continuous deployment (CI/CD) pipelines and tools.

A Cegal part of anInclusiveworking environment where you can be yourself, and bring all your skills, experience and personality into the workplace. We take pride in being are problem solvers. When things go wrong we fix it, and turn complexity into digital success stories. We call that beingFuss Fighters.

You will work withSuper Skilled colleagues that are passionate about technology and experience how our diversity encourages creativity, innovation and knowledge-sharing. Working in Cegal offers great opportunities for professional development and social engagement:

• Career paths- Advance your career with trainee programs, mentorship, growth dialogue.
• Influence- Ideal company size - global impact, yet stand out and make a difference
• Professional growth – Benefit from a training budget and dedicated time for learning and growth, while enjoying access to digital courses and our very own certification center.
• Technology- We are passionate about new tech. Test the latest technologies and implement them in real-world scenarios.
• Work-life balance - Enjoy a supportive and flexible work environment that enables you thrive both professionally and personally.
• Diversity - support diversity in the tech industry through our Diversity at Cegal initiative or industry partnerships

Want to know more about these and other benefits? Visit our careers page: https://www.cegal.com/en/careers/working-at-cegal

Want to join our adventure? Apply today.

Location:London

Questions?Contact the hiring manager Magne Ellefsen Nordtveit(95720187) or Talent Acquisition Specialist Joachim Croft Guslund (+47 93 68 87 97)

This is a direct company recruitment. We will not accept applications or candidates via employment agencies. As a candidate you will need to have a valid working visa for the UK. Cegal does not sponsor visas. For successful candidates, Cegal might ask for consent to perform a background check.