Senior Estimator – Main Contractor – Cardiff We are working with a leading international construction company seeking an experienced Senior Estimator to join their growing team in Cardiff. This is a fantastic opportunity to take a key role within a well-established main contractor, working on exciting projects across South Wales and the South West. The Role As Senior Estimator, you’ll take the lead on tenders and bids for large-scale construction projects valued up to £50 million. You’ll manage the full estimating process, preparing accurate and competitive costs, coordinating with design, commercial and delivery teams, and presenting final submissions to senior management. This is a pivotal role within the pre-construction team, offering real scope for progression into a Managing Estimator position as the regional office continues to grow. Key Responsibilities * Lead the estimating process on major projects up to £50m * Prepare accurate cost plans, tender submissions and value engineering proposals * Liaise with clients, supply chain partners and internal teams * Oversee junior estimators and provide mentoring/support * Ensure all bids are compliant, competitive and aligned with company strategy Experience Required * Proven background as an Estimator or Senior Estimator within a main contractor * Strong technical and commercial understanding of construction processes * Experience across a range of sectors – commercial, industrial, education, or mixed-use projects * Excellent communication and negotiation skills * Degree or HNC/HND in Construction Management or Quantity Surveying preferred What’s on Offer * Excellent salary package with performance-related bonuses * Genuine progression route into Managing Estimator * Opportunity to work with a respected multinational construction contractor * Supportive team culture and long-term career stability This is an exciting opportunity for a Senior Estimator looking to take the next step with a major name in UK construction. To apply or for a confidential discussion, please contact Giles Wilson at Sphere Solutions