At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.Your impactAre you a passionate Wastewater Modeller ready to take your career to the next level? At Jacobs, you'll play a vital role in shaping the future of water infrastructure across Ireland. With unprecedented investment in the sector, now is the time to be part of something transformative.We're hiringPrincipal Modellers and Associate Directorsof Modelling to strengthen our teams and support long-term frameworks with leading Ireland water companies. Your expertise will help deliver innovative solutions that protect the environment, reduce flood risk, improve water supply, and create lasting value for local communities.From early-stage planning to detailed design and delivery, you'll contribute to diverse programmes across the full project lifecycle. You'll be supported by a collaborative, multidisciplinary team and have access to cutting-edge tools, professional development, and career progression opportunities.This is more than a modelling role, it's a chance to make a meaningful impact while growing in a dynamic and inclusive environment.Key ResponsibilitiesTechnical lead for network modelling projectsLine Management of project team members with responsibility for day-to-day leadership and direction for the team, workload planning, technical guidance, driving staff performance and career development.Management of all health and safety, quality and environmental aspects of projects.Technical development and delivery of wastewater catchment strategies and solutions, to include flooding and CSO driversProvide technical and commercial leadership in the delivery of wastewater network projects within agreed timeframes and budgets and to exceed our clients' expectationsTechnical governance of outputs and compliance with client specificationsUsing network models for planning, operational and design purposesSupport and supervise the wastewater modelling team, ensuring technical excellence and best industry practiceContribute to developing working methods, routines and innovative solutions to improve processes in the delivery of wastewater network projectsSupervision of report writing check and review of technical modelling outputs.Plan, programme and co-ordinate projects deliveryContribute to the preparation of cost estimatesHere's what you'll needSupporting management in developing relationships and sales with existing and new clientsExcellent knowledge of the water industry with a focus on wastewater network solutionsProficiency in wastewater modelling software such as InfoAsset Manager, and InfoWorks ICM, ArcGIS, MapInfoStrong technical ability in the outline design of wastewater schemes; sewage pumping systems and treatment facilitiesExpertise in 1D and 2D modellingExcellent knowledge in current industry best practice and able to actively contribute to innovation in this fieldGood supervision and leadership skillsEnsuring project financial and programme performance.Experience of liaising with clients and managing projectsManagement and technical supervision of a team of modellersWhy Join Jacobs?Grow Your Career – From early talent to seasoned professionals, we offer clear paths for progression and development.Shape the Future of Water – Work on innovative, high-impact projects that protect resources and drive sustainability.Collaborate with the Best – Partner with industry-leading clients and experts in a thriving, future-focused sector.Ready to make a difference?Join Jacobs and help deliver smarter, sustainable water solutions for generations to come.Apply today and be part of the changeJoining Jacobs not only connects you locally but globally. Our values stand on a foundation of safety, integrity, inclusion and belonging. We put people at the heart of our business, and we truly believe that by supporting one another through our culture of caring, we all succeed. We value positive mental health and a sense of belonging for all employees.With safety and flexibility always top of mind, we've gone beyond traditional ways of working so you have the support, means and space to maximize your potential. You'll uncover flexible working arrangements, benefits, and opportunities, from well-being benefits to our global giving and volunteering program, to exploring new and inventive ways to help our clients make the world a better place. No matter what drives you, you'll discover how you can cultivate, nurture, and achieve your goals – all at a single global company. Find out more about life at Jacobs.We aim to embed inclusion and belonging in everything we do. We know that if we are inclusive, we're more connected and creative. We accept people for who they are, and we champion the richness of different perspectives, lived experiences and backgrounds in the workplace, as a source of learning and innovation. We are committed to building vibrant communities within Jacobs, including through our Jacobs Employee Networks, Communities of Practice and our Find Your Community initiatives, allowing every employee to find connection, purpose, and belonging. Find out more about our Jacobs Employee Networks here.Jacobs partners with VERCIDA to help us attract and retain talent from a wide range of backgrounds. For greater online accessibility please visit to view and access our roles.As a disability confident employer, we will interview disabled candidates who best meet the criteria. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.Your application experience is important to us, and we're keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support.