{"id":3877462,"url":"https://alion.io/job/mott-macdonald-principal-hydromechanical-engineer","title":"Principal Hydromechanical Engineer","company":{"id":1797435,"name":"Mott MacDonald","domain":"mottmac.com","url":"https://alion.io/company/mottmac","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":{"grade":"A","score":99,"open_postings":25,"ghost_share":0,"stale_share":0.04,"repost_share":0,"time_to_fill_p50_days":23,"computed_at":"2026-11-10T06:52:35Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Edinburgh, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":true}],"status":"live","first_seen_at":"2026-11-06T17:00:11Z","employer_posted_date":"2026-11-06","last_verified_at":"2026-11-10T05:54:20Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Location/s: Glasgow, Edinburgh, Cambridge, Reading, Bristol, Manchester, London, Newcastle, Cardiff, Birmingham & Brighton; UK\nRecruiter contact: Nicola Coyle\n\nMott MacDonald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices.\nWe work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance - we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.\nWhether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee-owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued. Whatever your ambition, Mott MacDonald is where people come to be brilliant.\nAbout the Division\nThe Water Utilities Division is Mott MacDonald’s centre of excellence for responding to the UK and Ireland's water and wastewater challenges. The work we do is at the forefront of ensuring safe water supplies for future generations, preventing urban flooding, and improving the health of our rivers and coastal environments. Our multi-disciplinary teams provide a variety of services throughout the full project life cycle, from advisory services and feasibility studies to outline and detailed design. Together, we deliver best-in-class solutions to our clients while offering diverse and technically stimulating opportunities to our people.\nOverview of the role\nWe are seeking an experienced Mechanical Engineer with specialist knowledge of gates, water control structures and hydro-mechanical systems to join our multidisciplinary water engineering team.\nThis is an opportunity to take a leading technical role across a diverse portfolio of UK and international water projects, working alongside mechanical, electrical, ICA, civil and structural engineering specialists. You will contribute across the full project lifecycle, from feasibility and concept design through detailed design, fabrication, installation, commissioning and testing.\nWith over 6,000 staff across the UK, we can offer flexibility on permanent office location for the right candidate. The role will, require travel to Cambridge approximately once a month to collaborate with the core design team and travel to project specific sites as needed.\nYou will provide technical leadership for the design and integration of hydro-mechanical and MEICA systems, including gates, stoplogs, screens, hydraulic power units, actuators and associated mechanical equipment.\nKey responsibilities and duties include:\nLeading and managing the delivery of mechanical and MEICA designs, ensuring effective integration with civil, structural, electrical and ICA disciplines\nProviding specialist technical input into the design of gates, water control structures, hydraulic systems and associated hydro-mechanical equipment\nManaging and contributing to the preparation and review of design deliverables to achieve the appropriate balance of quality, programme and cost\nProviding technical leadership, guidance and mentoring to engineers within the wider team, supporting capability development and knowledge sharing\nSupporting projects throughout their lifecycle, including design development, fabrication, installation, commissioning and testing\nSupporting business development activities, including working with Account Leaders and Practice Leaders to prepare proposals, bids and tenders requiring specialist hydro-mechanical expertise\nPromoting safe and sustainable engineering solutions, including delivery of designs in accordance with CDM requirements and EN 1090, where applicable\nMaintaining awareness of current and emerging technologies and identifying opportunities to improve the technical solutions we provide to our clients\nCandidate specification\nEssential:\nStrong technical knowledge and demonstrable experience in hydro-mechanical and water control structures, including equipment such as gates, stoplogs, irrigation barrages and hydro intakes, from feasibility through to detailed design and system integration\nChartered Engineer status, supported by relevant professional engineering experience\nGood knowledge of hydraulic systems, including hydraulic power units (HPUs), hydraulic cylinders, pumps and valves, with the ability to advise on equipment selection, application, technical issues and troubleshooting\nKnowledge of relevant design, fabrication and safety requirements, including the ability to deliver designs in accordance with CDM requirements and EN 1090 where applicable\nStrong leadership and communication skills, with the ability to work effectively with clients and multidisciplinary teams, provide technical direction and support the development of other engineers\nDesirable:\nExperience in the design or assessment of moving structures, such as lift bridges, swing bridges and linkspan structures\nExperience of finite element (FE) analysis and its application to mechanical or hydro-mechanical equipment\nExperience supporting bids, tenders and business development, particularly within the water or hydro-mechanical sector\nExperience supporting projects through fabrication, installation, commissioning and site testing\nAn interest in emerging technologies, sustainable engineering solutions and the continued development of hydro-mechanical engineering capability\nWe are actively recruiting a diverse workforce that is reflective of the communities we serve. We recognise that differences in ability, skills and experience are a strength and encourage applications from people of all backgrounds.\nUK Immigration\nMott MacDonald Ltd. are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. This decision is as a consequence of the changes made to the Skilled Worker route by the UK Government in April 2024. We continue to welcome applications from candidates who are eligible for alternative immigration routes in the UK, that do not require sponsorship as a Skilled Worker now or in future.\nAgile working\nAt Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team, and personal commitments. We offer a hybrid working policy that embraces your well-being, flexibility, and trust.\nEquality, diversity, and inclusion\nWe put equality, diversity, and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they can contribute.\nAI Usage\nAt Mott MacDonald, we see the value AI can bring, but we take a people-first approach to hiring. While AI tools can help candidates prepare and build confidence, every application and hiring decision is reviewed by our recruitment and hiring teams. We encourage the responsible use of AI while ensuring we get to know the real person behind the application.\nAccessibility\nWe want you to feel supported and able to perform at your best throughout our recruitment process. If there is anything we can do to make applying or interviewing with us more accessible, please contact us at  and we'll be happy to discuss how we can help.\nWe offer some fantastic benefits including:\nFinancial wellbeing\nWe match employee pension contributions between 4.5% and 7%.\nLife assurance equal up to 4 x your basic salary, with an option to increase the level of cover to 6 x your salary.\nOur income protection scheme provides a financial benefit, as well as absence and return to work support due to long-term illness or injury.\nFlexible benefits, including increased life assurance cover, critical illness insurance, payroll saving and will writing.\nAs an independently owned business we share the financial success of the business with all our colleagues in various ways including annual bonus schemes.\nEmployee Ownership\nOur employee ownership model means no external investors, just us, creating a culture of shared success.\nOur employees have a stake and a voice in our business, giving them a direct connection to our success through our personal and group performance bonuses.\nAs your career grows, so does your stake, recognising your long-term impact and contribution.\nYour voice matters, with the opportunity to connect directly with senior leadership through formal channels to help shape our future.\nFor our senior roles you will have a direct pathway towards ownership from day one.\nHealth and wellbeing\nPrivate medical insurance for all UK colleagues.\nHealth cash plan to support you with every day health costs and treatments.\nAccess to Peppy, providing free support from menopause experts for all UK colleagues.\nA variety of wellbeing support is available through our comprehensive wellbeing program, including access for you and your family.\nAbility to flex your salary to opt into a wide range of health benefits, many of which can be extended to your family too.\nLifestyle\nA minimum of 33-35 days holiday each year, inclusive of public holidays and dependent on level, with the ability to buy or sell leave through our flexible benefits programme.\n10 days additional paid leave for Armed Forces Reservists and Cadet Force Adult Volunteers.\nHoliday entitlement increased to a minimum of 35 days after 5 years’ service.\nVariety of employee saving schemes and discounts from high-street retailers.\nEnhanced family and carers leave\nEnhanced family leave policies, including 26 weeks paid maternity and adoption leave, and two weeks paid paternity/partner leave.\nOur shared parental leave matches maternity leave meaning we pay up to 24 weeks at full pay.\nUp to five additional days leave are provided for those with significant caring responsibilities, two of which are paid.\nWe offer policies and dedicated support to help military families balance service life with career and wellbeing.\nLearning and development\nPrimary annual professional institution subscription.\nA broad range of opportunities to enhance both technical and soft skills through mentoring, formal training, and self-development options.\nNetworks, communities, and social outcomes\nJoin a wide range of groups including our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability, and parents/carers communities.\nWe are proud signatories of the Armed Forces Covenant and Gold Award holders in the MOD Employer Recognition Scheme, supported by our dedicated internal Armed Forces Network.If you're a service leaver, veteran, reservist or member of a military family, you can connect with our people through Armed Forces Careers - Connectr to ask questions, gain career insights and learn more about opportunities at Mott MacDonald.\n\nMake a difference within our communities through our social outcomes.\nApply now, or for more information about our application process, click here.","description_format":"text","description_chars":11373,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Health insurance","Hybrid work","Parental leave"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Management Consulting","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-11-06T17:00:11Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Graduate Trainee, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; 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