Senior Software Engineer — End-to-End, High-Impact SaaS

Halliburton; Abingdon; On-site; GBP 90,000 - 120,000; Full time

Job summary

Landmark, a Halliburton company, is seeking an experienced software engineer to own features end to end for critical oilfield software used by operators worldwide. You will design, implement, test, and deliver high-quality code across domains such as geoscience, drilling, reservoir, and production engineering.

You will work with Java, C#, C++, Python, and TypeScript in cloud-native and on‑prem environments, using Docker, Kubernetes, and CI/CD tools.

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or a related discipline, or equivalent experience.
• 5–10 years of software development experience.
• Strong proficiency in at least one of: Java, C#/F# (.NET), C++, Python, or TypeScript (React/Angular/Node.js).
• Experience owning the full development cycle: requirements analysis, design, implementation, testing, and delivery.
• Experience debugging production software and tracing root causes that span multiple components or layers.
• Clear written and verbal communication, including the ability to explain technical decisions and trade-offs to teammates and stakeholders.

Responsibilities

• Own features end to end: analyze requirements, design solutions, write the code, test it, and ship it.
• Break complex specifications into concrete tasks with realistic schedules and flag risks early.
• Proactively identify and fix weaknesses in the codebase, the test coverage, and the development process.
• Investigate and resolve production defects, and trace root cause when symptom and source are not in the same place.
• Apply secure coding practices, surface vulnerabilities in code reviews, and fix security issues as they arise.
• Review code from other engineers with the same rigor you expect on your own work.
• Evaluate and integrate open-source tools and libraries where they improve the systems you work on.
• Mentor junior engineers through code reviews, pairing, and direct technical guidance.
• Communicate clearly across a distributed, cross-timezone team.

Skills

Full‑cycle ownership

Java

C# / F#

C++

Python

TypeScript (React/Angular/Node.js)

Debugging production software

Clear communication

Education

Bachelor’s degree in CS/SE or related field

Tools

CI/CD pipelines

Docker

Kubernetes

Terraform/Ansible/Helm/Argo CD

SQL/NoSQL databases

Job description

Landmark, a Halliburton company, is seeking an experienced software engineer to own features end to end for critical oilfield software used by operators worldwide. You will design, implement, test, and deliver high-quality code across domains such as geoscience, drilling, reservoir, and production engineering.

You will work with Java, C#, C++, Python, and TypeScript in cloud-native and on‑prem environments, using Docker, Kubernetes, and CI/CD tools.