Xylem is a Fortune 500 global water solutions company dedicated to advancing sustainable impact and empowering the people who make water work every day. As a leading water technology company with 23,000 employees operating in over 150 countries, Xylem is at the forefront of addressing the world's most critical water challenges. We invite passionate individuals to join our team, dedicated to exceeding customer expectations through innovative and sustainable solutions.
Mechanical Engineer
Location: Caldicot, South Wales
Function: Engineering Design
Are you a mechanically minded engineer who enjoys turning complex technical requirements into practical, buildable solutions?
We’re looking for a Mechanical Engineer to join our Engineering Design team, supporting the delivery of advanced water treatment and electrochlorination systems. This is a role for someone who thrives on technical depth, cross-functional collaboration, and seeing designs through from enquiry to commissioning.
The Role
Working under the direction of the Principal Mechanical Engineer, you’ll play a key role in interpreting client specifications and translating them into detailed, high-quality engineering designs.
You’ll be involved throughout the full project lifecycle — from enquiry and proposal support through to execution and commissioning — ensuring our systems are technically robust, compliant, and aligned to client and regulatory standards.
What You’ll Be Responsible For
Interpreting and digesting customer technical requirements and contract documentation
Producing process calculations, pump sizing calculations and hydraulic designs
Creating and defining PFDs and P&IDs
Producing equipment data sheets, specifications, and schedules
Selecting and detailing valves, instruments and associated equipment
Supporting plant layout development, including:
Pipework system design
Chemical storage and transfer systems
Compressed air treatment systems
Pneumatic control system designs
Reviewing supplier proposals and carrying out technical appraisals
Supporting proposal scope preparation and engaging with clients pre- and post-contract
Reviewing Process Control Philosophies and Functional Design Specifications
Resolving design issues during manufacture, installation and commissioning
Ensuring compliance with ISO 9001:2015 and internal QA procedures
Supporting CDM responsibilities through hazard elimination and risk mitigation in design
Contributing to document control and design review processes
You’ll work closely with Mechanical Designers, Electrical Engineers, Procurement, Production, QA, Project Managers and global colleagues — as well as external clients, vendors and inspectors.
What We’re Looking For
Essential:
HNC or HND in Mechanical Engineering (Degree desirable)
Strong ability to interpret complex technical specifications and diagrams
Confident representing the company professionally with customers
Strong problem-solving skills and creative thinking
Good understanding of manufacturing and production processes
Commercial awareness and understanding of engineering costs
High attention to detail
Strong communication and reporting skills
Well organised with the ability to prioritise effectively
Good level of computer literacy
Desirable:
Experience with electrochlorination packages or chemical process equipment
Structural steelwork construction and welding knowledge
Knowledge of ATEX, IECEx and HAZOP
Familiarity with major petrochemical specifications (e.g. BP, Shell)
AutoCAD experience
Why Join Us?
This role offers the opportunity to:
Work on technically challenging water treatment systems
Be involved from concept through to commissioning
Develop specialist knowledge in electrochlorination and water technologies
Influence design standards and continuous improvement
Collaborate across disciplines in a quality-driven engineering environment
If you’re motivated by solving complex engineering problems and want to contribute to high-impact water technology solutions, we’d love to hear from you.
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Join the global Xylem team to be a part of innovative technology solutions transforming water usage, conservation, and re-use. Our products impact public utilities, industrial sectors, residential areas, and commercial buildings, with a commitment to providing smart metering, network technologies, and advanced analytics for water, electric, and gas utilities. Partner with us in creating a world where water challenges are met with ingenuity and dedication; where we recognize the power of inclusion and belonging in driving innovation and allowing us to compete more effectively around the world.
