Senior Siebel Developer

Position Description:

At CGI we are at the forefront of delivering transformative digital solutions that enable critical Defence operations and drive measurable impact. As a Siebel Developer you will play a key role in shaping and evolving a highly customised CRM platform contributing to innovative high-value outcomes for our clients. You will be empowered to take ownership of complex challenges apply creative problem-solving and collaborate with a supportive team to deliver excellence. By combining deep technical expertise with a culture that encourages growth and accountability you will help us continue to deliver secure scalable and future-focused solutions that make a real difference.

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK Best Employer by the Financial Times. We offer a competitive salary excellent pension private healthcare plus a share scheme (3.5% 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector including our Armed Forces and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and youll be part of an open friendly community of experts. Well train and support you in taking your career wherever you want it to go.

Due to the secure nature of the programme you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a hybrid position with travel to our Leatherhead office.

Your future duties and responsibilities:

In this role you will contribute to the development enhancement and maintenance of a highly customised Siebel CRM solution within a secure Defence environment. You will take ownership of technical deliverables applying your expertise to design configure and optimise system components while ensuring alignment with established standards and best practices. Working closely with a collaborative team you will help shape solutions that deliver real operational value and continuous improvement.

You will be encouraged to bring forward ideas solve complex challenges and refine system capabilities supported by a culture that values innovation accountability and shared success. Your work will directly influence the performance scalability and reliability of critical systems.

Develop & Configure Siebel solutions using Siebel Tools and best practices

Design & Implement eScript workflows and technical components

Integrate & Optimise systems using EAI EIM and cloud-based services

Collaborate & Deliver alongside cross-functional teams and stakeholders

Analyse & Resolve technical issues ensuring high system performance

Enhance & Maintain existing Siebel implementations for continuous improvement

Required qualifications to be successful in this role:

To succeed in this role you will bring strong hands-on experience in Siebel development combined with a proactive approach to problem-solving and solution design. You will be comfortable working in secure structured environments and able to contribute effectively within a collaborative team while taking ownership of your work.

Strong experience in Siebel Tools configuration

Proven expertise in Siebel eScript and workflow development

Experience with Siebel Enterprise Application Integration (EAI) and EIM

Solid knowledge of Oracle SQL

Experience working with Oracle Cloud environments

Demonstrable experience in Siebel CRM development (2017 or later preferred)

Experience integrating Siebel with cloud infrastructure


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Skills:

• Oracle SQL Server
• Siebel CRM

What you can expect from us:

Together as owners lets turn meaningful insights into action.

Life at CGI is rooted in ownership teamwork respect and belonging. Here youll reach your full potential because

You are invited to be an owner from day 1 as we work together to bring our Dream to life. Thats why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our companys strategy and direction.

Your work creates value. Youll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas embrace new opportunities and benefit from expansive industry and technology expertise.

Youll shape your career by joining a company built to grow and last. Youll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our teamone of the largest IT and business consulting services firms in the world.