Senior/Principal Mechanical Engineer | 9-day fortnight | RG/6026

Responsum Global Ltd; London; On-site; GBP 45,000 - 65,000; Full time

Job summary

A leading engineering company seeks a Senior/Principal Mechanical Engineer to join their team in London. This role involves supporting varied Design & Build projects across water, wastewater, and environmental sectors. Candidates should be Chartered Engineers with strong mechanical design skills, ready to mentor junior staff and lead technical discussions.

Benefits

Individual development plans

Mentoring from senior staff

Private medical insurance

Flexible working options

Employee referral schemes

Inclusive culture

Qualifications

• Experience in mechanical design, preferably in the water industry.
• Skilled in producing General Arrangement Drawings and 3D models.
• Understanding of water and wastewater treatment processes.

Responsibilities

• Support delivery of Design & Build projects in various sectors.
• Contribute to the whole project life cycle from feasibility to construction.
• Mentor less experienced team members and ensure collaborative reviews.

Skills

Mechanical design

Technical specifications

Hydraulic calculations

Communication

Collaboration

Education

Chartered Mechanical Engineer

Incorporated Mechanical Engineer

Job description

The Position

You will join an established team of Engineers as a Senior/Principal Mechanical Engineer, supporting the delivery of a variety of Design & Build projects as part of major capital investment programs.

The successful candidate will be involved in the whole project life cycle, from feasibility and pioneering through to detailed design and construction support, including site surveys and investigations. There are opportunities to work on projects in water, wastewater, energy, infrastructure, and environmental sectors.

As an experienced Mechanical Engineer, you will liaise with project managers, technical leaders, design engineers, clients, supply chain partners, contractors, planners, and other stakeholders to achieve positive outcomes.

This company offers opportunities for learning and development, and you will help develop the team by mentoring less experienced members.

About You

The ideal candidate is a Chartered or Incorporated Mechanical Engineer with experience in mechanical design, preferably in the water industry. You should be experienced in producing technical specifications, pump sizing, hydraulic calculations, and familiar with collaborative reviews and design solutions.

You should be able to contribute to collaborative design outputs such as General Arrangement Drawings, 3D models, and Piping & Instrumentation Diagrams. Strong communication skills are essential for technical presentations and discussions, including workshops and HAZOPs.

Understanding of water and wastewater treatment processes and experience in assessing site infrastructure are important. Experience in energy, infrastructure, or environmental sectors is a plus.

Most importantly, you should embody values of client focus, community-minded designing, collaboration, and service excellence.

Why Join Them

This is an exciting opportunity to work on challenging projects with growth plans extending into the next AMP cycle. Benefits include:

• Individual development plans and clear career pathways
• Mentoring from senior staff
• Private medical insurance, income protection, and life assurance
• Flexible and hybrid working options
• Employee referral schemes
• Inclusive culture and commitment to environmental goals

Are you capable of working independently and as part of a team? Are you adaptable and flexible to new challenges?