Senior Project Planner

SII Group delivers Digital Services, IT, Engineering, and Consulting to diverse industries, enabling digital transformation through our commitment to Growth, People, and CSR. With over 16,000 professionals across 21 countries, we’re recognised as a “Great Place to Work” for fostering a high-trust culture. Our core values of Trust
, Transparency
, and Quality drive our work package delivery, ensuring we meet and exceed client expectations as a committed partner. Since 2016, SII UK has supported top Aerospace & Defence, Aviation, Transportation, and Finance clients, empowering digital transformation with industry‑leading engineering expertise. Let’s Tech Together is our promise to encourage innovation and teamwork. We support our engineers with development opportunities and a collaborative, inclusive environment where every voice is valued and empowered.

SII UK is seeking an experienced Project Planner to undertake independent assurance reviews on behalf of the P3M function across assigned Projects, Programmes, or Portfolios, with a specific focus on Planning and Scheduling compliance, maturity, and effectiveness.

• Attend all meetings required to support the assigned assurance review
• Participate in weekly tasking meetings with P3M Assurance Management
• Review project, programme, and portfolio documentation for compliance with defined standards
• Assess planning and scheduling approaches against agreed P3M frameworks
• Agree findings, recommendations, and actions with the relevant Project, Programme, or Portfolio teams
• Maintain independence and objectivity throughout the assurance process

• Contribution to the P3M Assurance Assessment Spreadsheet
• Contribution to the formal Assurance Report, including findings, recommendations, and supporting evidence

• Primavera P6, Microsoft Project
• Microsoft Excel (assessment spreadsheets, analysis)
• Microsoft Word / PowerPoint (assurance reporting and presentations)
• Share Point
• Jira / Confluence

• Competitive Basic Salary
• 6% Employers Contribution + 6% as a salary sacrifice
• Private Medical Insurance, Life Cover and Income Protection
• 25 days holiday
• 10 days full sick pay per year
• Flexible working
• Cycle to Work & Tech Scheme
• Continuous professional development
• Corporate access to the Udemy platform
• If you're applying for a role requiring security clearance, please be aware that foreign or dual nationality is not an automatic bar, however certain posts may have restrictions which could affect those who do not have sole British nationality or who have personal connections with certain countries outside the UK.