Senior Estimator - Civils / InfrastructureWelwyn Garden City, Hertfordshire (Hybrid - minimum 3 days office/client site)PermanentFull Time£70,000 - £90,000 DOE + Car Allowance + Pension + Increasing Annual LeaveWe are recruiting on behalf of a well-established civils contractor with a strong and growing presence in rail, drainage and utilities. Due to continued growth, they are seeking an experienced Senior Estimator to join their team based in Welwyn Garden City.This is a hands-on, senior-level role for someone who thrives on leading bids, shaping tender strategy and working collaboratively across commercial, engineering and planning functions. The company welcomes candidates from a broad range of backgrounds - including those who have progressed from site-based roles into estimating - and while rail experience is an advantage, strong civils or infrastructure experience is equally valued.The RoleAs Senior Estimator, you will take the lead on producing detailed, accurate and competitive estimates for civils and drainage works, typically on projects valued up to £5m. You will work closely with Bid Managers, Engineers, Planners and the Commercial team to define methodology and pricing approach, and will play a central role in securing new work in line with the company's growth objectives.The role carries responsibility for mentoring junior estimators, maintaining robust estimating systems and presenting adjudication packs to senior stakeholders. Following contract award, you will prepare handover documentation for operational teams and provide ongoing support through the mobilisation phase.Key ResponsibilitiesLead EstimatesUndertake and lead estimates in accordance with company procedures and tender requirementsMentor and develop junior estimators, particularly on larger, more complex tendersLiaise with Bid Managers, Engineers, Planners and the Commercial team to agree methodology and pricing principlesIdentify risks and opportunities throughout the tender processMaintain a register of key assumptions and keep the tender estimate file accurate and up to dateProvide indicative pricing support for business development activityObtain feedback from site teams on estimating accuracy and current cost levelsAdjudicationPrepare estimating adjudication packs and present the basis of estimate and key assumptions to senior stakeholdersMaintain notes of adjudication meetings and close out actions arisingMonitor customer negotiations and seek amended authority as requiredHandover & Post-Award SupportPrepare handover packs for operational and commercial teams following contract awardMaintain notes of handover meetingsProvide ongoing support to site teams relating to the estimate and its key assumptionsWhat We're Looking ForA strong background in civils, drainage, utilities or infrastructure - rail experience is welcome but not essentialProven experience preparing estimates on projects up to approximately £5m in valueNumerate and IT literate, with good working knowledge of estimating software and Microsoft ExcelConfident presenting to senior stakeholders and engaging with clients and internal teams at a senior levelStrong commercial acumen and excellent attention to detailAbility to travel for client meetings and site visits as requiredChartered, incorporated or equivalent professional status would be advantageousCandidates who have progressed from hands-on site roles into estimating are very welcome to applySalary & Benefits£70,000 - £90,000 depending on experienceCar allowance23 days annual leave, increasing with length of serviceCompany pensionHybrid working - minimum 3 days per week in the office or on client siteWhy Apply?Join a supportive, expanding contractor with a strong and growing project pipelineReal influence over bid strategy and tender decision-making at a senior levelOpportunity to lead on major tender submissions and mentor the next generation of estimatorsA stable, long-term role with clear potential for progressionIf you have the experience and ambition to make a real impact in a growing business, we'd be keen to hear from you.