An established civil engineering and infrastructure contractor is looking for an experienced Senior Design Engineer to join their team in London. This is a key technical role leading detailed structural design of temporary and permanent works across a range of civil engineering projects, providing expert design support to operational and site delivery teams. Responsibilities for Senior Design Engineer: * Lead, prepare, and oversee detailed technical designs including calculations, drawings, risk assessments, and design certificates * Undertake preliminary designs and coordination with other parties * Obtain independent checks and third-party technical approvals including for rail works * Ensure design outputs meet CDM, health and safety, and environmental compliance * Propose and develop value-engineered alternative solutions during design and construction phases * Undertake technical review of method statements for complex or unusual construction methods * Review defects or compensation events and advise on solutions * Provide technical information and advice to site and project teams * Assist with developing and maintaining processes, procedures, and standards for technical design * Obtain or provide pricing for estimating purposes * Liaise with clients, customers, suppliers, and third parties as required Essential Requirements for Senior Design Engineer: * Minimum 5 years’ design experience in structural engineering * Degree in Structural Engineering or Civil Engineering or equivalent * Proven experience in detailed design of permanent and temporary works structures * Proficiency in frame analysis software, structural design software, and CAD * Ability to carry out calculations by hand or using software such as MathCAD * Working knowledge of Eurocodes, BS 5975, and other relevant BS standards * Experience in a structural engineering office carrying out design calculations and analysis * Thorough knowledge of structural principles and construction processes * Strong team working and coaching skills with ability to work independently * Ability to identify structural suitability and critical load cases Desirable: * Mix of site and design office experience * Incorporated or Chartered membership with a relevant professional institution or working towards * CSCS card