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- Tasks: Support the Site Manager in delivering luxury residential projects with exceptional craftsmanship.
- Company: Award-winning construction specialists focused on high-end residential builds.
- Benefits: Competitive salary, job security, mentorship, and clear career progression.
- Why this job: Join a prestigious team and work on landmark homes in sought-after locations.
- Qualifications: Experience in UK construction, strong leadership skills, and a valid CSCS card.
- Other info: Opportunity to contribute to award-winning projects and gain industry recognition.
The predicted salary is between 36000 - 60000 £ per year.
At Castellum, we are award-winning luxury construction specialists delivering exceptional, high-end residential projects across prime locations in London, Surrey, Berkshire, and the Cotswolds. With over two decades of expertise in new builds, sensitive refurbishments, extensions, listed buildings, and sustainable retrofits, we partner closely with discerning clients, architects, and designers to create homes of lasting distinction.
We are now seeking a proactive, highly capable Assistant Site Manager to join our experienced team on a flagship luxury residential project in the exclusive Sunningdale area. This permanent position offers genuine long-term career progression, with a strong pipeline of prestigious schemes and the opportunity to work on some of the most desirable properties in the South East.
Key Responsibilities- Provide comprehensive daily support to the Site Manager, overseeing all site operations including coordination of skilled labour, specialist subcontractors, plant, and premium materials to ensure flawless programme delivery.
- Lead, inspire, and mentor multi-trade teams to consistently achieve the exceptional standards of craftsmanship and finish that define Castellum projects.
- Champion best-in-class health, safety, and environmental performance — delivering toolbox talks, dynamic risk assessments, and full compliance with CDM 2015 regulations.
- Proactively monitor progress against programme, identify potential risks or delays early, and collaborate effectively to deliver robust solutions.
- Build and maintain strong, professional relationships with subcontractors, suppliers, architects, and clients to secure timely, high-quality contributions.
- Maintain meticulous site records, including daily logs, progress photography, quality checklists, and comprehensive handover documentation.
- Enforce rigorous quality assurance protocols to deliver exquisite, high-specification finishes that surpass the exacting expectations of our clients and design teams.
- Demonstrable site supervisory experience in UK construction (Assistant Site Manager, Site Supervisor, Foreman, or strong progression from Trainee/Graduate level).
- Valid CSCS card.
- Current SMSTS certificate.
- Strong understanding of residential construction techniques, CDM 2015, and contemporary site management best practices.
- Outstanding leadership, communication, and problem-solving abilities — comfortable managing diverse teams in fast-paced, high-expectation environments.
- Full UK driving licence and own transport (essential, given the semi-rural and prestige nature of our sites).
- Previous experience on high-end, luxury, or bespoke residential projects (new build, refurbishment, or listed buildings).
- Additional certifications (SSSTS, First Aid at Work, or similar).
- Exposure to premium finishes, client-facing environments, and working with high-profile stakeholders.
- Highly competitive permanent salary, commensurate with experience.
- Long-term job security with a robust pipeline of exclusive luxury residential projects.
- A supportive, professional culture with director-level involvement, ongoing training, mentorship, and clear pathways to Site Manager and beyond.
- The privilege of contributing to landmark homes in the UK's most sought-after locations.
- The satisfaction of delivering work that consistently earns industry recognition and client pride.
If you are safety-first, quality-obsessed, and ready to build a rewarding career within a respected, award-winning team specialising in prime residential construction, we would be delighted to hear from you. Please submit your CV along with a brief covering note highlighting your most relevant experience (particularly any luxury or high-end residential projects) and your current notice period/availability.
Assistant Site Manager in Ascot employer: Castellum
Contact Detail:
Castellum Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Assistant Site Manager in Ascot
✨Tip Number 1
Network like a pro! Get out there and connect with industry professionals at events or online. We all know that sometimes it’s not just what you know, but who you know that can land you that dream role.
✨Tip Number 2
Prepare for interviews by researching the company and its projects. We want to see your passion for luxury residential builds shine through. Show us you’re not just another candidate, but someone who truly gets what we do!
✨Tip Number 3
Practice your answers to common interview questions, especially those related to site management and teamwork. We love candidates who can demonstrate their leadership skills and problem-solving abilities in real-life scenarios.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows us you’re genuinely interested in joining our award-winning team.
We think you need these skills to ace Assistant Site Manager in Ascot
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Assistant Site Manager role. Highlight your relevant experience in luxury residential projects and any supervisory roles you've held. We want to see how your skills align with what we do at Castellum!
Craft a Compelling Cover Note: Your cover note is your chance to shine! Keep it brief but impactful, focusing on your most relevant experiences. Let us know why you're excited about working on high-end projects and how you can contribute to our team.
Showcase Your Skills: Don’t forget to mention your certifications like CSCS and SMSTS, as well as any additional training. We love seeing candidates who are proactive about their professional development, so make sure to highlight those!
Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of applications and ensures you don’t miss out on any important updates from us. We can't wait to hear from you!
How to prepare for a job interview at Castellum
✨Know Your Projects
Before the interview, dive deep into Castellum's past and current projects. Familiarise yourself with their luxury residential builds and understand what sets them apart in the market. This will not only show your genuine interest but also help you discuss how your experience aligns with their high standards.
✨Showcase Your Leadership Skills
As an Assistant Site Manager, you'll need to lead diverse teams. Prepare examples from your past where you've successfully managed teams or resolved conflicts on-site. Highlight your communication style and how you inspire others to achieve exceptional craftsmanship.
✨Understand Health and Safety Regulations
Brush up on CDM 2015 regulations and any relevant health and safety protocols. Be ready to discuss how you've implemented these in previous roles. This shows that you're proactive about safety and quality, which is crucial for a role at Castellum.
✨Prepare Questions for Them
Interviews are a two-way street! Prepare insightful questions about their upcoming projects, team dynamics, or company culture. This demonstrates your enthusiasm for the role and helps you gauge if Castellum is the right fit for you.
