About CTS Group

CTS Group is a fast-growing international design and build company specializing in data center development across Europe, the Middle East, and Africa (EMEA). With over 40 nationalities represented across our teams, CTS fosters a collaborative, high-performance culture where innovation and technical precision drive every project.

Role Overview

The Junior Mechanical Engineer – Cooling Parts supports the design, documentation, and coordination of cooling systems and mechanical packages for mission-critical facilities, working under the guidance of senior engineers.

Key Responsibilities

• Support design and development of cooling system components and mechanical packages from concept through IFC and as-built stages.

• Assist in selection, sizing, and integration of cooling equipment such as chillers, CRAHs, CDUs, pumps, and heat rejection systems.

• Help ensure designs comply with applicable codes, standards, and client technical requirements.

• Coordinate with electrical, structural, and architectural teams under senior direction.

• Prepare design documentation and drawings to support fast-track delivery.

• Assist with technical input for constructability, commissioning, and handover.

• Support responses to RFIs and site teams during construction.

• Prepare mechanical design packages for senior engineer review and sign-off.

Required Skills and Experience

• Bachelor's degree in Mechanical, Electrical, or Industrial Engineering.

• 3–5 years of experience in mission-critical, industrial, or related engineering environments.

• Foundational knowledge of critical cooling systems (CRAH/CRAC, chillers, liquid cooling, heat exchangers, pumps).

• Working proficiency in 3D modeling tools such as AutoCAD and Revit.

• Basic understanding of high-density and liquid-cooled data center environments.

• Familiarity with redundancy concepts (N+1, 2N) is an advantage.

Soft Skills

• Strong attention to detail and eagerness to learn.

• Good collaboration and communication skills.

• Ability to adapt in fast-paced, high-complexity environments.

What We Offer

A career-building role in one of Europe's fastest-growing data center companies, with direct collaboration with global colleagues, competitive compensation, health insurance, and a dynamic, innovation-focused environment in Lisbon/Porto.

If you have the profile we’re looking for, apply for the opportunity to join an excellent team and contribute to the success of a fast-growing international company.