Senior Web Developer

Senior Web Developer (Contract)

Location: Basingstoke, UK (Hybrid)

Start Date: ASAP

Duration: 12+ months

Engagement Type: PAYE

Overview

We are looking for an experienced Senior Web Developer to join a dynamic engineering and technology environment supporting global energy and infrastructure initiatives.

This role sits within a forward-thinking team focused on modernising legacy systems, supporting digital transformation, and contributing to the transition toward low-carbon and sustainable technologies. You’ll play a key role in upgrading internal applications, improving system integration, and ensuring secure, scalable web solutions.

Working Model

This position follows a hybrid working model, with flexibility to work remotely for up to 12 days per month. The remaining time is spent onsite at a well-connected office location in central Basingstoke.

Key Responsibilities

Full Stack Development

• Modernise and migrate legacy in-house applications to a unified platform
• Support transition to newer web frameworks and technologies
• Design, develop, and maintain scalable web-based and intranet applications

Technical Delivery

• Gather and analyse business and technical requirements
• Design and manage database structures and integrations
• Interface with internal enterprise systems where applicable
• Maintain clean, up-to-date technical documentation

Support & Maintenance

• Provide user support, troubleshoot issues, and implement fixes
• Manage change requests and ensure controlled deployment processes

Cyber Security (Web Applications)

• Identify and remediate vulnerabilities found in security scans
• Collaborate with cross-functional teams to resolve security issues
• Respond to cyber alerts and ensure timely mitigation actions
• Contribute to improving overall cyber security awareness and practices

Required Skills & Experience

Core Technical Skills

• Strong experience with:
  • JavaScript / jQuery
  • Java / Groovy
  • HTML & CSS
• Experience with (or exposure to):
  • Grails (desirable)
  • Spring & Hibernate frameworks
  • MS SQL Server (including database design)
  • Git / DevOps version control practices
  • IDEs such as IntelliJ

Development Practices

• Experience working in Agile environments
• Strong understanding of full software development lifecycle
• Proven ability to design and deliver web-based solutions

Professional Skills

• Proactive, self-driven, and highly motivated
• Strong analytical and problem-solving abilities
• Excellent communication and stakeholder engagement skills
• Ability to work independently and collaboratively

Qualifications

• Degree in a relevant field or equivalent practical experience
• Demonstrated experience in application design and development

Why Apply?

• Work on impactful projects in a rapidly evolving sector
• Gain exposure to modern technologies and large-scale systems
• Flexible hybrid working model
• Long-term contract stability

People are our business worldwide

Orion Group was founded in 1987 and is now one of the largest, independent, international recruitment companies. We have a network of 200 employees working from 24 offices, delivering a range of services – Talent Acquisition, Recruitment Outsourcing Services, Retained Search, Global Workforce Solutions, Completions & Commissioning and Materials Management – across 68 countries. As a global leader in workforce solutions, we recruit personnel across the Engineering & Technical, Office & Commercial, Scientific and Skilled Trades disciplines, for sectors including Oil & Gas, Life Science, Power & Utilities, Constructions & Infrastructure, Manufacturing and Renewables.