Mid-Level Java Developer

Halliburton
London
We are looking for the right people - people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the world's largest providers of products and services to the global energy industry.

Job Duties

We are seeking a skilled Java developer with 3+ years' experience for our Neftex Technical Services Team. Reporting to the Team Lead, you will contribute to the design, development, and maintenance of subsurface evaluation solutions across the energy sector. Successful candidates will be evidently enthusiastic and motivated people who we can train up in our processes and ultimately play a key role in quality assurance initiatives across different stakeholder groups.

Minimum Qualifications

  • Strong knowledge of Java Core, including:
  • Collections Framework, Generics, Streams, Lambdas
  • Exception handling and best practices
  • Multithreading and concurrency (Executors, synchronization, CompletableFuture)
  • Memory management and garbage collection basics
  • Object-oriented principles (SOLID, design patterns, microservice architecture)
  • Experience with Java and related frameworks (SpringBoot, Eclipse RCP, OData, Hibernate, JPA, REST, etc.)
  • Backend development including REST APIs with Spring Boot, Swagger/OpenAPI specifications, Spring Security, OAuth2/OIDC, JWT.
  • Git-based workflows and Gitlab CI/CD pipelines.
  • Experience working in an Agile development environment (Scrum or Kanban).
  • Familiarity with SQL Server, PostgreSQL or other relational databases.
  • Self-starter with a proactive attitude and ability to learn new technologies quickly.
  • Undergraduate degree in Software Engineering, Computer Science, or a related field.
Preferred Qualifications

  • Familiarity with GIS connectors.
  • Familiarity with Azure DevOps, GitLab, and Git-based workflows.
  • Experience with CI/CD pipeline automation and deployment scripting.
  • Experience with automated testing, including unit, integration, and regression testing.
  • Eclipse Plugin development experience including SWT, JFace, Eclipse OSGi, extension points, views/editors, preferences
  • Knowledge of containerization and orchestration (Docker, Kubernetes).
Key Responsibilities

  • Design, develop, and maintain desktop and web applications using Java.
  • Implement new services, features, and bug fixes as prioritized by the Product Owner.
  • Build and integrate APIs to enable seamless communication between services and components.
  • Collaborate with product owners, architects, and other developers to define requirements and deliver high-quality solutions.
  • Participate actively in Agile ceremonies including sprint planning, daily stand-ups, backlog refinement, and retrospectives.
  • Write clean, maintainable, and well-documented code following industry best practices and internal standards.
  • Implement automated tests (unit, integration, and functional) to ensure code quality and reliability.
  • Monitor and optimize performance, scalability, and security.
  • Apply and enforce security best practices, including:
  • Ensuring secure authentication and authorization flows.
  • Implementing encryption for data in transit and at rest.
  • Validating and sanitizing all inputs to prevent injection attacks.
  • Keeping dependencies and libraries up to date to mitigate vulnerabilities.
  • Troubleshoot and resolve issues across development, staging, and production environments.
  • Maintain up-to-date knowledge of emerging technologies, frameworks, and industry trends relevant to day-to-day development.
  • Contribute to technical documentation and knowledge sharing across teams.
  • Communicate and escalate issues clearly and promptly to relevant stakeholders.
Qualifications

Minimum Qualifications: Minimum qualifications may be acquired through technical schools or equivalent related experience. Candidates having qualifications that exceed the minimum job requirements will receive consideration for higher level roles given (1) their experience, (2) additional job requirements, and/or (3) business needs. Depending on education, experience, and skill level, a variety of job opportunities might be available from the Technical Professional Software (Senior - Principal)

Halliburton is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, disability, genetic information, pregnancy, citizenship, marital status, sex/gender, sexual preference/ orientation, gender identity, age, veteran status, national origin, or any other status protected by law or regulation.

Location


97 Jubilee Avenue, Milton Park,Abingdon,Oxfordshire,OX14 4RW, United Kingdom

Job Details


Requisition Number: 209320
Experience Level: Experienced Hire
Job Family: Engineering/Science/Technology
Product Service Line: Landmark Software & Services
Full Time / Part Time: Full Time


Additional Locations for this position: Abingdon

Compensation Information
Compensation is competitive and commensurate with experience.

Job Segment: Developer, Java, Testing, Computer Science, QA, Technology, Quality
Posted 2026-05-30

Recommended Jobs

Program Advisor (Student Recruitment)

Global University Systems (GUS)
London

About Global University Systems (GUS) Global University Systems (GUS) is an international education group that empowers students to transform their lives through education. We believe education dri…

View Details
Posted 2026-06-19

Year 3 Teacher | Brent

Marchant Recruitment
Brent, Greater London

A highly regarded primary school in Brent is recruiting a committed and enthusiastic Year 3 Teacher to join their team from January 2026. This is a fantastic opportunity for a Year 3 Teacher who is p…

View Details
Posted 2025-12-10

Site Manager - Boys’ School in Sutton (January Start)

Marchant Recruitment
Sutton, Greater London

Site Manager – Boys’ School in Sutton (January Start) Location: Sutton Start Date: January 2026 Contract Type: Full-time, Permanent Salary: Competitive An established boys’ secondar…

View Details
Posted 2025-11-29

AD HOC Full time cleaning job - West Drayton

Dazzle: Commercial & Office Cleaning | London
London

At Dazzle , we are more than just a cleaning company – we are a tech-driven, people-focused business that takes pride in delivering exceptional cleaning standards across London and the surrounding …

View Details
Posted 2025-11-25

Operations Administrator

WeMaintain
London

Our mission We don’t only maintain lifts and escalators — we transform how they’re operated.At WeMaintain, we build tech that empowers the people who keep cities running, making building maintenan…

View Details
Posted 2026-06-16

Locum T&O Registrar - Barts Health NHS Trust

Pulse
London

Job Title: Locum T&O Registrar Grade: ST3+ Client Group and Setting: Barts Health NHS Hospital Location: London Hours per Week: Flexible hours 12 – 50 hours Locum or Permanent: L…

View Details
Posted 2025-09-10

DT Technician | Camden (Inner London)

Marchant Recruitment
London

We are excited to be working with an Outstanding secondary school in Camden to recruit a high-calibre and enthusiastic DT Technician. This full-time, permanent position is available for an immediate …

View Details
Posted 2026-03-07

(OHA) Engineering - Light Occupational Health Adviser (OHA) Central London United Kingdom

Work Place Doctors
Central London

(OHA) Engineering - Light Occupational Health Adviser (OHA) Central London United Kingdom via Workplace Doctors on a fixed term / permanent basis. ***Speciality: Occupational Health *** Sector: En…

View Details
Posted 2026-05-27

School Administrator - Mixed Secondary School in Merton

Marchant Recruitment
Merton, Greater London

School Administrator – Mixed Secondary School in Merton (January Start) Location: Merton Start Date: January 2026 Contract Type: Full-time, Permanent Salary: Competitive A welcoming …

View Details
Posted 2025-11-22