About CTS Group

CTS Group is a fast-growing international design and build company specialising in data centre development across Europe, the Middle East, and Africa (EMEA). We combine engineering excellence, innovation, and digital transformation to deliver high-performance, sustainable, and future-ready data centre solutions.

With over 40 nationalities represented across our teams, CTS fosters a culture of innovation, collaboration, and excellence — combining engineering expertise with manufacturing capability to deliver high-performance, sustainable data centre solutions at speed and scale.

Our proven track record and strong partnerships have established CTS as a trusted industry leader delivering large-scale, complex data centre facilities with speed, efficiency, and excellence.

Role Overview

The Senior Mechanical Engineer defines the cooling and HVAC engineering strategy for data centre and mission-critical facilities, holds technical sign-off authority, and mentors junior and intermediate engineers.

The role leads value-engineering and vendor strategy and manages liaison with authorities, vendors, and clients from concept through commissioning, at CTS's São Paulo engineering hub.

Key Responsibilities

• Define the mechanical/cooling engineering strategy across chillers, CRAHs, CDUs, pumps, and heat rejection systems.

• Provide technical authority and design sign-off for mechanical packages.

• Lead value-engineering and optimisation reviews for mechanical scope, balancing efficiency, reliability, and maintainability.

• Conduct design risk assessments and identify and escalate technical risks and design deviations.

• Lead multidisciplinary MEP coordination and enforce modelling and documentation standards.

• Oversee design and installation quality; lead commissioning and integrated testing of mechanical systems.

• Lead vendor and OEM negotiations and technical evaluation for cooling and mechanical equipment packages.

• Mentor junior and intermediate engineers and review their design deliverables.

• Liaise with authorities having jurisdiction (AHJ), vendors, and clients on mechanical compliance and delivery matters.

Required Skills and Experience

• Bachelor's or Master's degree in Mechanical Engineering.

• 10+ years in mechanical engineering, including experience leading mission-critical/data-centre design.

• Expert knowledge of critical cooling systems (CRAH/CRAC, chillers, liquid cooling, heat exchangers, pumps) and redundancy concepts (N+1, 2N).

• Advanced proficiency across AutoCAD, Revit MEP, and Navisworks.

• Deep understanding of high-density and liquid-cooled data centre environments and DCIM tools.

• Advanced or fluent English for collaboration with international teams.

• Proven leadership, mentoring, and client/authority engagement skills.

What We Offer

• Competitive compensation package with performance-based incentives.

• Meal vouchers and/or food vouchers.

• Life insurance.

• Direct collaboration with international colleagues and exposure to high-value global projects.

• Career path within CTS Group’s global projects and international teams.

• A dynamic, professional, and inclusive work environment in São Paulo, focused on innovation and excellence.