Associate Software Engineer

Salary: £69,000 - 109,000 per year

Requirements:

• Bachelors degree in Computer Science, Software Engineering, or a related discipline, or equivalent professional experience
• Minimum of 3 years of software development experience
• Working knowledge of at least one modern programming language and standard development tooling (version control, build systems, testing frameworks)
• Experience contributing to a shared codebase with other engineers is preferred
• Exposure to cloud platforms (Azure, AWS), web application development, or data systems is preferred
• Exposure to CI/CD or infrastructure automation tools is preferred
• Interest in technically demanding application domains such as scientific computing, applied AI/ML, real-time systems, large-scale data processing, or similar is preferred

Responsibilities:

• Build, test, and ship features for products in active use by energy companies worldwide
• Debug and fix defects in production systems, learning how large-scale applications behave under real conditions
• Write and maintain automated tests as part of our standard delivery workflow
• Participate in code reviews by reading teammates code, receiving feedback, and learning the codebase
• Follow secure coding practices, triage security issues when they arise, and apply fixes to deliver secure applications
• Contribute to technical documentation for the systems and features we work on
• Work within a distributed team across time zones, communicating clearly and consistently about progress and blockers
• Research and evaluate open-source tools and libraries that can improve the systems we work on
• Grow our understanding of the product domain through the work itself

Technologies:

• AI
• AWS
• Angular
• Ansible
• Azure
• C#
• CI/CD
• Cloud
• Docker
• Eclipse
• F#
• Helm
• JUnit
• Java
• Kubernetes
• MongoDB
• Oracle
• PostgreSQL
• Python
• React
• SQL
• Security
• Terraform
• TypeScript
• Web
• ASP.NET
• NodeJS
• DevOps
• NoSQL

More:

We are Landmark, a Halliburton company, and we build software and data platforms that help the global energy industry make better decisions. Our products span subsurface interpretation, well construction planning, reservoir simulation, production optimization, and digital operations, delivered as cloud-native SaaS platforms and enterprise on-premises solutions. We are hiring new graduates as well as engineers with up to five years of professional experience, and this role offers regular guidance from experienced engineers, code reviews from the start, and opportunities to grow into a stronger technical path. Positions are available across a range of teams, including geoscience, drilling engineering and well planning, reservoir engineering and modeling, production engineering and optimization, E&P data management and integration, cloud and platform infrastructure, data services, developer tooling, and AI-assisted analytics, search, and generative AI. Technologies vary by team and include Java, C#, F#, C++, Python, TypeScript, .NET, Eclipse RCP/SWT, JUnit, Angular, React, Node.js, Azure, AWS, Docker, Kubernetes, Terraform, Ansible, Helm, Argo CD/Flux, PostgreSQL, SQL Server, Oracle, and MongoDB. We offer competitive compensation that is commensurate with experience, and the role is based in Milton Park, Abingdon, Oxfordshire, United Kingdom.

last updated 37 week of 2026