Senior Wastewater Hydraulic Modeller

Begin your journey with us and thrive in your career.Are you eager to collaborate with a team of skilled modellers dedicated to revolutionizing the water sector?Join our innovative and diverse Water Team as a Senior Wastewater Hydraulic Modeller. You will have the flexibility to work from one of our offices in the UK or Ireland while benefiting from our adaptable hybrid working arrangement.As a vital contributor, you will play an essential role in executing transformative water projects both within the UK and internationally. We are committed to developing significant flood mitigation strategies, enhancing pollution control measures, and advancing infrastructure initiatives. This diversity of projects will be pivotal for your ongoing professional growth. Our unique methodology integrates our modelling team with broader project teams, allowing for close collaboration with experts across various disciplines to devise comprehensive solutions.As a leading authority in Blue-Green infrastructure and nature-based solutions, we partner with both public and private sector clients such as Severn Trent, Anglian Water, Northern Ireland Water, the Environment Agency, LLFAs, and several other infrastructure providers. Our offerings include Flood Risk Assessments, Drainage Strategies, Outline Business Cases, hydraulic models, and detailed designs. We establish industry benchmarks by providing guidance that defines best practices, positioning AECOM at the forefront of the water industry. This role presents a remarkable opportunity to contribute to a talented and diverse team devoted to innovation, teamwork, and efficiency.Your responsibilities will include:Model Development: Construct hydraulic models and validate sewer networks; oversee integrated model development, assist in project scoping and planning, including flow survey validation, and devise catchment-wide strategic solutions addressing flooding and pollution challenges.Technical Expertise: Drive technical innovation through the application of cutting-edge technologies; develop solutions for our clients and create project scopes and tender responses.Reporting: Prepare and present technical reports, presentations, and documentation to effectively communicate modelling outcomes utilizing strong communication skills.Leadership: Mentor and guide team members in their professional development and cultivate positive relationships with clients.Quality Assurance: Review hydraulic models, calculations, and technical reports to ensure adherence to quality standards and compliance with modelling specifications.If you are passionate about innovation and transforming ambitious ideas into reality, AECOM invites you to join us. Be part of a team that not only builds infrastructure but also uplifts communities and enhances lives. Follow our AECOM Water page on LinkedIn for updates on our projects and initiatives.

Join our innovative team at Egis Group as a Senior Wastewater Modeller, where you will play a pivotal role in the design and analysis of wastewater systems. You will leverage advanced modelling techniques to enhance the efficiency and sustainability of our projects. This is an exciting opportunity to work on impactful projects that contribute to environmental sustainability.

Launch Your Career with AECOM and Make an Impact!“Join our team of flood risk specialists and help shape the future of the Water Industry!”We are seeking a dedicated Senior Flood Modeller to become a vital part of our expanding Water Business Line in London. This is your opportunity to contribute to high-profile projects throughout the UK and beyond while being part of one of the UK’s leading engineering hubs.As a Senior Flood Modeller at AECOM, you will serve as a key technical resource, mentoring junior staff and driving our service offerings to local authorities, water companies, and both private and public sector clients.Your Responsibilities:Develop and validate hydraulic models using software such as Flood Modeller, TUFLOW, Mike 11, Mike 21, HEC-RAS, and ICM for Flood Alleviation Schemes, Flood Risk Assessments, and reservoir flood studies.Create water quality models utilizing industry-standard software like MIKE, Delft3D, SIMCAT, and/or ICM.Conceptualize and outline modelling strategies, assessing risks and opportunities.Conduct and review hydrological assessments in accordance with the Flood Estimation Handbook, ReFH2, and WINFAP standards.Lead and contribute to tenders for innovative projects and multimillion-pound framework contracts.Mentor team members to enhance their professional growth.Foster strong relationships with clients and collaborate with other technical disciplines.Stay informed about relevant legislation and guidelines impacting our services.Utilize AECOM’s project management systems to deliver exceptional outputs within the agreed timelines and budgets.Work in close partnership with clients and multidisciplinary teams to execute a variety of flood risk management projects.If you are driven by innovation and eager to turn visionary ideas into reality, AECOM is the place for you. Join us in our mission to not just build infrastructure but also uplift communities and enhance lives. Follow our AECOM Water page on LinkedIn to stay updated on the meaningful projects we are engaged in!Grow Your Career with Us!Become a part of our vibrant Water business, which comprises around 700 experts across the UK and Ireland. Collaborate with top-tier engineers and consultants to deliver a range of captivating projects.

“Are you ready to make a significant impact in the Water Industry as part of a dedicated team of flood risk specialists?” Join our innovative and multidisciplinary Water Team as a Principal Flood Modeller in one of our UK offices, benefiting from our flexible hybrid working model. As a senior technical leader, you will mentor junior staff and strive to enhance our services primarily for the Environment Agency and private sector clients.At AECOM, we are pioneers in innovation, delivering an impressive array of water programs and projects through long-term collaborations with key clients. We have secured positions on major frameworks with the Environment Agency, National Grid, Wessex Water, Anglian Water, National Highways, Southern Water, and South West Water. Alongside our established major infrastructure clients, we have an extensive pipeline of projects that we would be thrilled for you to be part of.Key Responsibilities:Technical Expert: Spearhead flood flow estimations using methodologies outlined in the Flood Estimations Handbook. Design and validate hydraulic models (utilizing software such as Flood Modeller, TUFLOW, HEC-RAS, and InfoWorks ICM) to support flood alleviation schemes, flood risk assessments, river restoration projects, or the Environment Agency’s flood maps.Project Delivery: Lead the development of tenders for a range of projects from innovative single initiatives to multimillion-pound framework contracts. Create and assess high-quality technical reports that document model constructions and uncertainties in the model build process. Conceptualize and define modelling and hydrological strategies, taking into account the associated risks and opportunities.Collaboration: Collaborate closely with clients and teams of engineers and technical specialists to facilitate a diverse range of fluvial, coastal, surface water, or drainage flood risk management projects.Leadership: Mentor team members to support their professional growth and foster relationships with clients and other technical disciplines.Quality Assurance: Stay informed about legislative and guideline developments that may impact our services. Utilize AECOM’s project management systems to ensure high-quality outputs for our clients in line with the agreed timelines and budgets.If you’re passionate about innovation and transforming ambitious ideas into reality, we want to hear from you! Follow our AECOM Water page on LinkedIn to stay informed about the impactful projects we are undertaking and witness the difference we are making in the industry!Join us and grow with AECOM.

Join Monzo as a Senior Forecasting Modeller, where you will leverage advanced analytics to shape our financial forecasts. Your expertise will guide decision-making processes and enable us to enhance our strategic planning. You will collaborate closely with cross-functional teams to develop robust predictive models that drive business growth and improve operational efficiency.

Join our innovative team at dev2 as a Senior Data Modeller. In this role, you will be at the forefront of shaping our data architecture and modeling strategies to drive insightful decision-making across the organization. Your expertise will be critical in designing sophisticated data models that enhance our analytical capabilities and support our business objectives.

Egis Group is seeking a Senior Modeller to join its Water Sector team in London. This role centers on developing and applying advanced modelling techniques for water resource management and infrastructure projects. Key responsibilities Develop and implement advanced models to address water resource and infrastructure challenges. Collaborate with colleagues from different disciplines to deliver solutions that meet client needs. Collaboration The Senior Modeller works alongside professionals from multiple backgrounds, ensuring that modelling approaches align with project goals and client requirements.

Begin your journey. Advance your career.Are you prepared to revolutionize water infrastructure?Our robust and dynamic Water Engineering team in the Southeast is seeking a Senior Civil Engineer to join us at our offices in St Albans, Croydon, London Aldgate & Basingstoke.We are working on an exciting array of water programs and projects through long-term partnerships with leading clients including major UK water companies such as Thames Water, Affinity Water, and Southern Water, along with Tier 1 contractors and international projects.Among the projects currently underway are strategic water pipelines, the London Power Tunnels, HS2 utilities design, WTW UV upgrades, Thames Water mains rehabilitation, and upgrades to Mogden STW and Southern Water STW.Working flexibly from various locations in Southern UK, you will have the chance to visit client sites around the South and collaborate with teams through multi-year frameworks. As part of our thriving enterprise, you will tackle rewarding multidisciplinary projects from conception to execution, crafting innovative solutions that enhance the environment and uplift communities.This position offers a fantastic opportunity to advance your career as a technical engineer, creating solutions that address the technical challenges of today and tomorrow.Your responsibilities will include:Collaboration: Engage closely with our teams of engineers, hydraulic modellers, environmental scientists, and technical specialists to deliver high-quality projects both within the UK and internationally. Communicate with clients to refine scope, develop pricing proposals, and report on project status.Delivery: Create feasibility studies, outline designs, detailed designs, reports, and technical specifications.Leadership: Provide line management for junior staff, offering guidance and conducting performance evaluations.Quality Assurance: Ensure that designs comply with all relevant standards and regulations, and contribute technical expertise for interdisciplinary analytical studies.If you are passionate about innovation and turning ambitious ideas into reality, AECOM welcomes you. Join our team where we do not merely build infrastructure but also enrich communities and improve lives. Follow our AECOM Water page on LinkedIn to stay informed about the impactful projects we're working on and witness the difference we are making in the industry!Join & Flourish with Us.Become part of our vibrant Water business, which includes around 670 specialists across the UK & Ireland. Collaborate with leading civil, mechanical, electrical, and process engineers to deliver a diverse range of projects.

AECOM is seeking a Senior or Principal Civil 3D Modeller to support infrastructure projects in London. This role centers on applying advanced Civil 3D skills to produce accurate models for a range of engineering and construction initiatives. Role overview Work closely with multidisciplinary teams to develop and refine design solutions. The position involves creating detailed models that support project delivery and contribute to effective collaboration across engineering disciplines. What you will do Use Civil 3D to generate and manage models for infrastructure projects Coordinate with colleagues from various specialties to ensure integrated project outcomes Support design innovation and maintain high standards of quality in modelling work Requirements Extensive experience with Civil 3D software Background in infrastructure or related engineering projects Strong collaboration and communication skills

Kickstart your career and advance with us.Are you prepared to join a dedicated team of Hydraulic Specialists and drive innovation in the Water Industry?We are in search of a Senior Hydraulic Specialist to enhance our expanding Water team. In this pivotal technical role, you will lead small teams in executing essential hydraulic analyses for clean water and wastewater treatment facilities across the UK.Your primary emphasis will be on hydraulic modelling of treatment facilities, complemented by opportunities to engage in a broader spectrum of treatment plant and civil design projects.Your responsibilities will include:Setting up HADES models for treatment plant infrastructureCalibrating models with physical dataInvestigating hydraulic modelling scenariosDeveloping innovative hydraulic solutionsPresenting findings to clientsCollaborating with multi-disciplinary teams within AECOM and externally to formulate solutionsPreparing high-quality technical reports, detailing model assumptions, build processes, results, and uncertainties.Supporting project delivery tasks, including hydraulic profiles and collaborating with other disciplines to create detailed design drawings.Engaging directly with clients.Utilizing company project management systems to ensure timely and budget-compliant project delivery.Join us and grow your career.We are a tight-knit team of engineers, hydraulic modellers, technicians, and project managers, serving a diverse clientele that includes local governments, water companies, and private developers.With 600 employees spread across the UK in cities such as Basingstoke, Belfast, Bristol, Chesterfield, Croydon, Edinburgh, Leeds, and Manchester, we offer flexibility in your work location across England and Wales.Our environment fosters collaboration and professional development, with opportunities for weekly team check-ins, client secondments, site-based assignments, and specialized training. You will have the chance to significantly influence your career trajectory, whether through enhancing our international offerings, spearheading technology-driven innovations, or mentoring fellow team members.We are committed to providing you with the challenges, opportunities, and support necessary for your success.Why work with us?Be part of a dynamic team working on impactful water projects.Collaborate with industry-leading professionals and thought leaders.Thrive in an inclusive and cooperative work atmosphere.Gain access to continuous learning and development opportunities.Receive a competitive salary and an extensive benefits package.Enjoy flexibility in your working style, promoting a healthy work-life balance.

About Gridcog Gridcog is a SaaS start-up focused on advancing the clean energy transition. The team brings together energy professionals building project modeling software that helps users make informed, strategic decisions about energy projects. Role Overview This Senior Simulation Engineer (Modeling) position centers on improving and expanding the simulation and optimization capabilities within Gridcog’s Python codebase. The work blends mathematical modeling, numerical methods, and production-level software engineering to deliver accurate, efficient, and reliable simulations at scale. What You Will Do Enhance and extend simulation and optimization features in the core Python platform Work with mathematical models and numerical methods to support complex energy project scenarios Ensure modeling outputs remain accurate and efficient as the platform grows About the Platform The Gridcog platform models the physical and commercial aspects of energy projects. It integrates technologies such as solar, wind, batteries, flexible loads, gensets, and EV fleets, capturing their interactions within electricity markets and tariff structures worldwide. Who Should Apply Simulation engineers with experience in modeling uncertainty and solving complex business problems Candidates with backgrounds in energy systems modeling are encouraged, but those with transferable skills from other modeling or data science domains will also be considered Location This position is based in London, England, United Kingdom.

Role overview The Senior Associate, Strategic Pricing - Modelling at Checkout.com will focus on developing and refining pricing strategies through advanced financial modeling. Based in London, this position supports pricing decisions that aim to balance client value with company profitability. The role works closely with teams across the business to ensure pricing approaches are informed and aligned. What you will do Analyze market trends, customer patterns, and competitor pricing to inform overall strategy. Build and improve financial models that guide pricing decisions. Work with cross-functional teams to gather insights and coordinate on pricing approaches. Contribute to optimizing pricing structures to achieve business goals and address client needs. Requirements Proven experience with financial modeling and strategic pricing methods. Strong analytical skills and ability to work with large data sets. Interest in applying data to support business decisions.

Join Our Visionary Team at Runna!At Runna, we are on a mission to create the premier training platform for runners. Our innovative app empowers everyday athletes to excel, providing access to top-notch training, expert coaching, and a supportive community whether you're aiming to improve your 5k or preparing for your first marathon.Our rapid growth is fueled by a strong vision, backed by a recent $6.5M funding round led by JamJar and supported by Eka Ventures, Venrex, and Creator Ventures. In 2024, we had the honor of being named one of Apple’s three global finalists for the iPhone app of the year, and in 2025, we proudly became a part of Strava!We aspire to be the leading global training platform for millions of runners. With our recent acquisition by Strava accelerating our growth, this is an exciting time to join us. As part of our dynamic Train Team, which includes over 35 professionals from engineering, product, design, and coaching, you will play a crucial role in delivering exceptional training experiences to hundreds of thousands of runners worldwide. You will engage in developing personalized training plans at scale, analyzing performance data, and providing insights to our users based on their training and environmental conditions.We embrace a flexible hybrid working model, requiring you to be on-site three days a week at our London office.

Join Our Team as a Senior Modelling Engineer II!At Runna, we are assembling a dynamic team dedicated to creating the leading training platform for runners worldwide. Our mission is to empower everyday runners to excel by providing an exceptional app that offers top-tier training, coaching, and a supportive community, whether you're aiming to improve your 5k performance or preparing for your first marathon.Our growth has been remarkable! In November 2023, we successfully closed a $6.5 million funding round led by JamJar, with contributions from Eka Ventures, Venrex, and Creator Ventures. In 2024, we were honored to be recognized by Apple as one of the three global finalists for the iPhone App of the Year, showcasing the innovation and impact of our platform. Furthermore, in 2025, we became part of the Strava family!Our ambition is bold: to be the premier global training platform for millions of runners around the globe. As we accelerate our journey with the recent acquisition by Strava, now is an exciting time to become a part of something significant. The Train Team, a cross-functional group of over 35 professionals, is at the core of Runna’s mission: delivering outstanding training experiences to hundreds of thousands of runners globally. We focus on creating and dynamically adjusting optimal, personalized training plans at scale, analyzing performance data for training adjustments, and providing users with valuable insights based on their training and environment.We embrace a flexible hybrid working model, requiring you to be on-site three days a week at our London office.

Join AECOM as a Design Manager specializing in wastewater treatment. In this pivotal role, you will oversee design projects, ensuring compliance with regulatory standards while delivering innovative and sustainable solutions. Collaborate with multidisciplinary teams to drive the successful execution of projects from conception through to completion.

Join OakNorth, where we are dedicated to empowering the UK’s most ambitious businesses. Since our inception in 2015, we have successfully lent over $18 billion across the UK and US, contributing to the creation of more than 58,000 new homes and 36,000 new jobs, while supporting hundreds of thousands of personal savers, all driving growth in the UK economy.Our lending operations serve as the backbone of our growth strategy, further enhanced by our expanding services in Business Banking and Personal Savings. We are looking for a Senior Fullstack Engineer to lead our digital lending initiatives and quantitative modelling efforts.

About Us At Ki Insurance, we’re in the business of insuring some of the most exciting ventures around the globe—from space shuttles and world tours to wind farms and even professional footballers’ legs.Our mission is clear: to digitally disrupt and revolutionize an industry that has remained unchanged for over 335 years. Partnering with Google and UCL, we have developed an innovative platform that leverages algorithms, machine learning, and large language models to deliver rapid insurance quotes—within seconds instead of days.As the world’s largest algorithmic insurance carrier, we are proud to be the fastest-growing syndicate in the Lloyd's of London market, achieving an unprecedented $100 million in profit within just three years.Our diverse teams work collaboratively in an agile environment, striving to provide the best possible experience for our customers. As we set our sights on ambitious future goals, we are eager to welcome brilliant minds who are ready to challenge the status quo and explore new horizons with us.Your RoleWe are seeking a Senior Analyst to join our team at Ki Insurance. In this pivotal role, you will ensure that our underwriters receive prompt, consistent, and precise service aligned with the risk aggregation strategy established with the Senior Manager (Catastrophe Modelling) and Head of Risk Aggregation.With your expertise in providing comprehensive and accurate exposure data and modelled loss information, you will facilitate timely reporting for both internal and external stakeholders, ensuring compliance with internal guidelines and regulatory standards.Your role will involve enhancing business understanding of its risk profile, enabling effective aggregate deployment, and continuously seeking opportunities to develop, streamline, and implement best practices for the risk aggregation function, while ensuring alignment across various business classes and modelling applications (e.g., ORI and Pricing). Additionally, you will oversee the daily operations, relationships, and outputs of our outsourced business partner related to relevant modelling and data entry.Key Responsibilities Collaborate with the Risk Aggregation team and relevant functions (capital modelling, actuarial, and ERM) to ensure that modelling processes and assumptions are closely aligned and meet regulatory standards.Deliver accurate pricing, analytics, management information, and reporting to stakeholders (including underwriting and ORI placement teams) in a timely manner.Oversee the quality of exposure data and the data production from Ki's processing teams.Provide subject matter expertise for broader risk aggregation projects and deliverables (e.g., Ki's risk perspective and ORI).

Join Monzo as an IFRS9 Modeller and play a crucial role in shaping our financial strategies. You will be responsible for developing and maintaining IFRS9 models, ensuring accurate credit risk assessments and supporting our growth in the banking sector.

Role overview The Water and Wastewater Project Manager at AECOM in London leads the full lifecycle of water and wastewater projects, with a focus on supporting sustainable urban infrastructure. This position involves guiding projects from the earliest planning stages through to successful delivery. What you will do Direct project delivery, managing each phase from initial planning to final completion. Coordinate multidisciplinary teams, ensuring project goals and quality standards are met. Track project timelines and budgets, keeping progress on schedule and within financial targets. Build and maintain strong client relationships, prioritizing client satisfaction throughout each project. Impact Work in this role directly supports community development and advances sustainable infrastructure in urban areas.

Role overview Funding Circle seeks a Lead Model Validation Analyst in London. This role centers on upholding the integrity and accuracy of financial models that inform business decisions and manage risk. The analyst will play a central part in ensuring models meet high standards and support the company’s goals. What you will do Develop and enhance methodologies for validating financial models. Carry out thorough reviews to evaluate model performance and dependability. Collaborate with various teams to improve analytical processes across the business. Contribute to shaping the model risk management framework to promote transparency and uphold high standards. Impact This position is vital to Funding Circle’s commitment to strong model governance and analytical quality. The analyst’s work supports clear, informed decision-making and reinforces transparency throughout the company.