Proposal Writer (Defence)

CGI Group Inc.; Leatherhead; Hybrid; GBP 42,000 - 65,000; Full time

Benefits offered by this job

Insurance coverage

Pension plan

Health benefits

Flexible time off

Share Purchase Plan

Job summary

CGI in London is seeking a Proposal Writer for the Intelligence Mission Systems sector to shape high-quality proposals for space, defence and intelligence opportunities. You’ll own content from storyboard through submission, collaborating with bid leaders, technical experts and colleagues to give every response a competitive edge.

You will translate complex technical information into clear, concise client-facing content, mentor others, and help develop reusable content and case studies to

Qualifications

• Experience writing high-quality proposals in IT, systems integration or defence.
• Excellent written and verbal UK English communication.
• Ability to translate complex technical information into client-facing content.
• Strong collaborative skills to challenge solution owners constructively.
• Experience contributing to structured proposal reviews.
• Ability to develop non-technical responses with limited SME input.
• UK citizenship with SC clearance eligibility and ability to commute to CGI offices.

Responsibilities

• Own high-quality proposal documentation from storyboard to final client submission.
• Develop clear, persuasive content aligned with client requirements and CGI strategy.
• Collaborate with technical experts to uncover differentiators.
• Review and enhance proposals through Shipley reviews.
• Mentor proposal writers and create reusable content.
• Develop compelling case studies and reusable content.
• Shape and improve proposal processes and messaging.

Skills

Proposal writing

UK English

Collaborative skills

Security clearance

Shipley methodology

Tools

Shipley

Job description

At CGI, you'll help shape winning proposals for some of our largest and most strategically important opportunities across Space, Defence and Intelligence. As a Proposal Writer within our Intelligence Mission Systems sector, you'll turn complex ideas into clear, persuasive stories that demonstrate CGI's technical excellence and deliver meaningful outcomes for clients. You'll take ownership of proposals from early storyboarding through to submission, working creatively with bid leaders, technical experts and colleagues to give every response a competitive edge. As part of a supportive community of experts, you'll also help raise proposal standards, mentor colleagues and develop reusable content, giving you the opportunity to influence how CGI communicates its capabilities and secures future growth., In this role, you will take ownership of producing high-quality, compelling proposals for strategically important opportunities within CGI's Space, Defence and Intelligence business. Working alongside Opportunity Pursuit Leads, Bid Managers, technical experts and other specialists, you will develop proposal content from initial ideas and storyboarding through review and final submission, ensuring every response clearly communicates CGI's value, technical excellence and understanding of client requirements.

You will bring creativity and constructive challenge to the proposal process, translating complex technical information into concise, engaging client-facing content and independently developing non-technical responses where appropriate. Supported by an experienced collaborative team, you will also contribute to proposal reviews, mentor colleagues and create reusable case studies and content that strengthen future bids and support CGI's continued growth.

Key Responsibilities

• Lead & Deliver - Own high-quality proposal documentation from storyboarding through Pink, Red and Gold Reviews to final client submission.
• Write & Influence - Develop clear, persuasive technical and non-technical content aligned with client requirements and CGI's proposal strategy.
• Collaborate & Challenge - Work with technical experts and solution owners to uncover differentiators and strengthen proposal content.
• Review & Enhance - Contribute to Shipley reviews and improve consistency, quality and tone across multi-author proposals.
• Mentor & Support - Help proposal writers and wider bid teams develop effective proposal-writing techniques aligned with the CGI voice.
• Create & Reuse - Develop compelling case studies and reusable content that showcase CGI's capabilities across future opportunities.
• Shape & Improve - Support the continual development of proposal processes, standards and competitive messaging.

Qualifications & Experience

• Demonstrable experience writing high-quality proposals within IT, systems integration, defence or related sectors.
• Excellent written and verbal communication skills, with fluency in UK English.
• Proven ability to translate complex technical information into clear, concise and persuasive client-facing content.
• Strong collaborative skills and the confidence to question and challenge solution owners constructively.
• Experience contributing to structured proposal reviews and improving multi-author content.
• Ability to develop effective non-technical proposal responses with limited subject-matter expert input.
• UK citizenship and sole UK nationality, with existing SC clearance or eligibility to undergo the required CGI security-clearance process.
• Ability to commute easily to a CGI office in Gloucester, Leatherhead or Manchester and attend the office up to five days per week when proposal security requirements dictate.
• Experience of Shipley or comparable bid and sales methodologies would be advantageous.
• Experience or potential to lead and mentor proposal writers on major opportunities would be advantageous.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll 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. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.

Your work creates value. You'll 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.

You'll shape your career by joining a company built to grow and last. You'll 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.

That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

Come join our team-one of the largest IT and business consulting services firms in the world.

Discover CGI

London, England, United Kingdom

> 1000 employees

IT services

We are a global business with 91,500 professionals across hundreds of locations worldwide, providing end-to-end IT and business process services that drive our clients' businesses. In the UK alone, we have around 6,000 member‑partners working across 19 towns and cities, doing everything from writing complex code to designing sophisticated software solutions. The work we do powers some of the most ambitious projects that touch the lives of many. Our approach sets us apart, characterised by our proximity model, international presence, expertise, and operational excellence. We organise our operations within metro markets where our clients have concentrated footprints, empowering our local teams to build trusted, in‑person relationships. As you build your career here, you'll develop your skills, share your insights, and work side‑by‑side with colleagues and clients on innovative solutions that address the most complex issues. Our commitment to ownership, flexibility, and being approachable makes us easy to do business with. Join us, and together, as owners, let's turn meaningful insights into action to meet the needs and balance the interests of our clients, shareholders, communities, and each other.

Benefits

• Insurance coverage
• Medical benefits
• Pension plan
• Member Assistant Programme
• Check4Cancer
• Flexible time off
• Share Purchase Plan
• Member discounts
• Dental benefits
• Vision benefits
• Profit Participation Plan
• Health and Wellbeing Programme

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 you'll be part of an open, friendly community of experts. We'll 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.