It Software Engineer jobs in United Kingdom

Title : Applications Systems Engineer (Level 3)

Location : Site based 5 days per week at our Grangemouth HQ

Salary : Dependent on skills, qualifications and experience

Contract type : PAYE Agency (6-month initial contract)

A truly global company, INEOS comprises of numerous businesses with sites in countries throughout the world. We also encompass a wide range of consumer brands and sports interests.

Grangemouth remains one of INEOS’ key sites in the UK and is home to world scale manufacturing plants – offering a unique environment in which to grow your skills, knowledge and competencies within the petrochemical sector.

We are engineering a strong future for our site, based on a highly skilled, experienced workforce and a portfolio of essential products that underpin a sustainable, low carbon future for all. We are entrepreneurial. We love to find new ways of doing things. Whether that’s through improving the energy efficiency of our plants, developing new ways of working or delivering on our net zero promises. And we’re proud to be doing this in Scotland.

We believe in offering our employees true autonomy and empowerment with a working environment that creates the opportunities for all of us to achieve our potential and to have a fulfilling professional career.

A highly skilled and experienced IT professional is required to join our team to provide technical expertise in supporting and maintaining business-critical applications across multiple INEOS businesses. The successful candidate will ensure application stability, security, and performance while driving continuous improvement to meet agreed Service Level Agreements and business objectives. This role involves delivering end-to-end application lifecycle services, including design, implementation, maintenance, upgrades, and modifications, while safeguarding systems against cyber threats and ensuring compliance with digital security and legislative requirements. As a senior member of the team, you will also play a key role in mentoring colleagues, managing incidents, and contributing to projects that enhance application reliability and business continuity.

• Implement and sustain IT applications systems and services to achieve business goals for availability, reliability, security, functionality and cost while meeting the growing needs for digital security and legislative compliance to meet Service Level Agreements (SLA).
• Define / develop, test & implement both in-house developed & third-party applications to meet business defined requirements and ensuring they comply with best practice and group Cyber Security standards.
• Regular review and prioritisation of incoming support issues to ensure resolution within a timely manner.
• Actively assist in the management and resolution of any unplanned application outages.
• To create & maintain IT Applications Team support documentation & technical standards procedures to ensure continuity of IT services.
• To implement continuous service improvement initiatives as directed by IT Applications Team Lead.
• To mentor and coach other members of the IT Applications Team promoting best practices and excellent customer service.
• To participate in IT Applications Team projects ensuring that they are delivered on time, on budget and meet the stated business requirements.

• Role involves participation in the IT Incident Management and Application Team out of hours on call rota.

• Bachelor or Master in a technical, business or IT discipline or equivalent experience
• Extensive technical experience in an IT environment
• A number of years’ experience working in a senior application support and maintenance role
• Expertise in developing SharePoint solutions using the SharePoint Framework, with experience in Power Automate workflows, Azure Functions, and secure authentication via Azure AD. Skilled in supporting pipelines with Azure DevOps.
• Self-starter, with strong team-working, influencing, communication and other interpersonal skills
• A proactive mindset with a focus on service and customer impact
• Performs consistently in time-sensitive and complex scenarios
• Deep understanding of application system architecture, design, life cycle and deployment
• Proven track record in creating, implementing & reviewing technical solutions for IT Applications and IT business systems
• Proven experience with solving problems on a wide range of system issues
• Experience in the Oil and Gas sector
• Working knowledge of one or more of ASP, .NET, Apex and MS Access
• Working knowledge of web and application servers including Microsoft IIS, Oracle WebLogic, IBM WebSphere, Apache Tomcat, and JBoss
• Experience with Snowflake and Azure cloud computing platform
• Experience working with SQL for data querying, processing and performance tuning.
• An understanding of networking to troubleshoot connectivity issues affecting application performance (DNS, proxy, SSL)

Interested candidates should submit their CV via our website .

Applicants with a successful CV may be invited to an online MS Teams or telephone call to further discuss the role, the organisation and your suitability.

Successful applicants will then be invited to interview which will consist of behavioural and technical questions. For some roles the recruitment process may also include technical testing, behaviour questionnaires and/ or a delivering a presentation.

If you are selected as the preferred candidate you will receive a provisional offer which will be subject to a medical assessment and reference checks. Some roles may also require a criminality check.

If you would like to discuss any adjustments you may require throughout the recruitment and selection process please contact opportunities.uk@ineos.com .

As an equal opportunity employer, we encourage diversity and are committed to creating an inclusive environment for all employees. We encourage applicants from all protected characteristics and commit to providing any reasonable adjustments required during application, assessment and on-boarding stages.

• Location Grangemouth, United Kingdom
• Discipline IT
• Type Contract
• Business INEOS Grangemouth
• Posted 19 December 2025
• Closing Date 16 January 2026
• Requisition ID 1901