Senior/Principal Mechanical Engineer

Black & White Engineering; Paris; On-site; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Lunch & learn

Professional courses

Job summary

Black & White Engineering in Paris is seeking a Senior / Principal Mechanical Engineer to take technical ownership of mechanical design and lead significant packages, focused on cooling, resilience and operational performance.

You will coordinate across multidisciplinary teams, mentor engineers and deliver design assurance while aligning with client expectations and project goals.

Qualifications

• Strong mechanical building services design experience.
• Proven capability delivering complex cooling, HVAC and mechanical systems.
• Experience leading significant design packages or technical workstreams.
• Strong design review and multidisciplinary coordination capability.
• Confident technical communication with clients and project stakeholders.

Responsibilities

• Lead mechanical design packages through relevant stages of project delivery.
• Develop and review cooling, HVAC, plant and associated mechanical system designs.
• Undertake and oversee engineering calculations, equipment selection and technical assessments.
• Coordinate solutions with electrical, structural, civil and specialist engineering disciplines.
• Review technical deliverables and provide design assurance.
• Engage with clients and stakeholders to resolve technical issues and communicate design decisions.
• Mentor engineers and contribute to improving technical standards and delivery.

Skills

Building services

Cooling & HVAC

Design leadership

Multidisciplinary

Client communication

Job description

Take technical ownership of mechanical engineering solutions on complex projects where cooling, resilience, efficiency and operational performance matter. As a Senior / Principal Mechanical Engineer, you will have the opportunity to influence design decisions while remaining close to the engineering.

You will lead significant mechanical packages, solve challenging technical problems and coordinate solutions across multidisciplinary teams. At Principal level, this will extend further into technical assurance, mentoring and providing trusted technical guidance across projects.

What’s in It For You

• Technical Ownership - Take responsibility for significant mechanical packages and influence major design decisions.
• Engineering Complexity - Work on cooling, HVAC, plant and associated mechanical systems where performance, resilience and constructability are fundamental.
• Multidisciplinary Exposure - Collaborate with electrical, structural, civil, BIM and wider specialist teams to create fully coordinated designs.
• Career Development - Build further technical authority, project leadership and client-facing experience as the business continues to grow.
• Develop Others - Review work, share technical knowledge and help engineers around you build their capability.
• Values-Led Environment - Work within a team where Accountability, Integrity, Simplicity and Supportiveness shape how engineering challenges are approached.

What You’ll Be Doing

• Lead mechanical design packages through relevant stages of project delivery.
• Develop and review cooling, HVAC, plant and associated mechanical system designs.
• Undertake and oversee engineering calculations, equipment selection and technical assessments.
• Coordinate solutions with electrical, structural, civil and specialist engineering disciplines.
• Review technical deliverables and provide design assurance.
• Engage with clients and stakeholders to resolve technical issues and communicate design decisions.
• Mentor engineers and contribute to improving technical standards and delivery.

Essential Skills

• Strong mechanical building services design experience.
• Proven capability delivering complex cooling, HVAC and mechanical systems.
• Experience leading significant design packages or technical workstreams.
• Strong design review and multidisciplinary coordination capability.
• Confident technical communication with clients and project stakeholders.

Learning & Development

You will be joining a community that focuses on learning and development through regular lunch and learn sessions and investment in accredited professional courses or educational programmes. You can set the pace for your professional development, and whatever path you choose, you will receive relevant support.

Company Overview

Black & White Engineering is a multi-award-winning engineering consultancy with offices across the UK, Europe, the Middle East and Asia Pacific.

We are a leading provider of engineering design services for the data centre sector, delivering expertise across Mechanical, Electrical and Plumbing (MEP), Civil and Structural, Power Systems, Sustainability, BIM, Design Management and wider specialist infrastructure disciplines.

Our teams support projects across all areas of the construction industry, offering practical, efficient design solutions that prioritise real-world installation, maintenance and operational performance.

As one of the fastest-growing consultancies in our industry, we offer genuine opportunities for progression. Many of our engineers have developed into leadership roles as the business has expanded. Joining Black & White Engineering means making a meaningful impact with clients and colleagues while receiving the recognition you deserve.