Mechanical Engineer

Pell Frischmann; Greater London; Hybrid; GBP 42,000 - 64,000; Full time

Benefits offered by this job

Hybrid and flexible working

Career development support

Training and development

Competitive salary and benefits

Job summary

Pell Frischmann is seeking a Mechanical Engineer to deliver mechanical designs for water treatment, pumping stations and pipelines across Croydon, helping to protect communities and the environment.

You will work within a collaborative, multidisciplinary team and enjoy hybrid working arrangements with 2–3 days in the office, while pursuing professional accreditation and career growth.

Qualifications

• Degree in Mechanical Engineering or related discipline.
• Experience delivering mechanical designs within the water sector.
• Knowledge of water or wastewater treatment processes and infrastructure.
• Strong communication and stakeholder management skills.

Responsibilities

• Involve throughout project lifecycle from feasibility to commissioning support.
• Perform mechanical design and engineering calculations.
• Select equipment including pumps, valves, screens and process plant.
• Produce specifications, reports and technical documentation.
• Participate in design reviews, HAZOPs and value engineering workshops.
• Collaborate with multidisciplinary project teams and support delivery.

Skills

Mechanical design

Stakeholder management

Technical communication

Project collaboration

Education

Degree in Mechanical Engineering

Job description

Mechanical Engineer

Date: 2026-09-19

Location: South East England

Country: GB

Postcode: KT19 8GY

Contract Type: Any

Last Updated: 2026-10-20T02:56:02.08

Water & Wastewater | Croydon (Hybrid)

Want to work on projects that genuinely improve communities, protect the environment and shape the future of the UK water sector? We're looking for a Mechanical Engineer to join our growing Water & Wastewater team in Croydon. You'll work on a diverse portfolio of clean water and wastewater projects, helping to deliver innovative and sustainable solutions for major UK water companies.

This is an excellent opportunity for someone looking to develop their career within a supportive and collaborative consultancy, working alongside industry-leading specialists across mechanical, civil, structural, electrical and process engineering disciplines.

What you'll be doing

• You'll be involved throughout the project lifecycle, from feasibility and concept design through to detailed design, construction and commissioning support.
• Projects may include:
  • Water and wastewater treatment works
  • Pumping stations
  • Pipelines and transfer systems
  • Sludge treatment and handling facilities
  • Sustainable infrastructure improvements

You'll be responsible for

• Mechanical design and engineering calculations
• Equipment selection including pumps, valves, screens and process plant
• Producing specifications, reports and technical documentation
• Participating in design reviews, HAZOPs and value engineering workshops
• Collaborating with multidisciplinary project teams
• Supporting project delivery through construction and commissioning

About You

We're interested in hearing from engineers who have:

• A degree in Mechanical Engineering or a related discipline
• Experience delivering mechanical designs within the water sector
• Knowledge of water or wastewater treatment processes and infrastructure
• Strong communication and stakeholder management skills
• A desire to continue developing professionally

We're open to candidates working towards chartership, recently chartered engineers and those with broader infrastructure experience looking to specialise in water.

Why Join Pell Frischmann?

At Pell Frischmann, you'll be part of a business with nearly 100 years of engineering heritage and a strong focus on creating a sustainable future.

We're proud to be part of RSBG SE, whose investments directly support environmental and social initiatives, meaning the work we do has a lasting positive impact beyond the projects we deliver.

Benefits include:

• Meaningful projects that improve communities and the environment
• Hybrid and flexible working
• Clear career development and support towards professional accreditation
• Collaborative and supportive teams
• Ongoing training and development opportunities
• Competitive salary and comprehensive benefits package

Location

Croydon

Employment Details

• Full-Time | Permanent
• Hybrid Working 2-3 days in the office a week