Senior Mechanical Engineering-Design

The OpportunityWe are seeking a Senior Mechanical Engineer with deep experience in large-scale data center and mission critical facilities to strengthen our growing Dallas team. As a Senior Mechanical Engineer within our Mission Critical team, you will serve as a key technical leader in the design and delivery of complex, large-scale hyperscale data center projects. You will bring subject-matter expertise in advanced mechanical systems while collaborating across multidisciplinary teams to deliver coordinated, resilient, and scalable infrastructure solutions. This role combines hands-on engineering, technical leadership, client engagement, and mentorship.Lead mechanical system design for mission critical and hyperscale data center projects.Design and oversee complex HVAC systems including:Large-scale airside systems (AHUs, CRAHs, DOAS, containment strategies)Chilled water plants and hydronic distribution systemsCooling towers, heat rejection systems, and water-side economizationSpecialty exhaust and ventilation systemsDevelop scalable, redundant (N+1, 2N, 2N+1) system architectures aligned with uptime requirements.Coordinate closely with electrical, structural, and architectural teams to deliver fully integrated design solutions.Partner with Project Managers to ensure high-quality, on-time, and on-budget deliverables.Support construction administration, commissioning, and site inspections.Maintain strong client relationships, supporting repeat business and long-term partnerships.Mentor junior engineers and provide technical oversight to project teams.Uphold Arup’s quality standards, commercial performance metrics, and technical excellence.The SkillsBachelor’s degree in Mechanical or Architectural Engineering.Minimum 8+ years of experience designing complex building HVAC systems, including significant experience in mission critical or data center facilities.Demonstrated experience on large-scale hyperscale data center projects.Strong knowledge of redundancy strategies, resiliency planning, and mission critical design best practices.Proficiency in Revit MEP.Preferred Qualifications:Professional Engineering (PE) license in Texas.Experience working directly with hyperscale data center clients.Experience supporting commissioning, startup, and construction administration.Familiarity with industry standards and guidelines relevant to mission critical facilities.Experience mentoring engineers or leading small project teams.We are owned in trust on behalf of our members, giving us the freedom, with personal responsibility, to set our own direction and choose work that aligns with our purpose and adds to Arup’s legacy. Our members collaborate on ambitious projects to deliver remarkable outcomes for our clients and communities. These benefits provide health and welfare security for you as well as paid time off for rest and renewal. As a member of Arup, everyone shares in our success through a global profit share scheme (payments are dependent on the firm’s financial performance). Our Global Profit Share Plan (paid bi-annually) provides an opportunity for you to share in the success of the Firm. As a valued employee of Arup, you can also choose to participate in our 401(k) plan with up to 10% company match to help you save for your futureFlexible Working - We believe that flexible arrangements create a more inclusive way of working that supports our diversity and the wellbeing of our people. Options for alternative schedules and the ability to work outside of the office for a portion of your workweek are availableDallas Hiring Range - The good faith base salary hiring range for this job if performed in Dallas is $117,400 - $147,800 per year. We welcome applications from individuals of all backgrounds, regardless of age (within legal limits), gender identity or expression, marital status, disability, neurotype or mental health, race or ethnicity, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. Our internal employee networks support our inclusive culture: from race, ethnicity and cross-cultural working to gender equity and LGBTQ+ and disability inclusion - we aim to create a space for you to express yourself and make a positive difference. Discover more about life at Arup at Our Application Process We will be reviewing our candidates for this position on a rolling basis. All qualified applicants will receive consideration without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, spouse of a protected veteran, or disability.Stay safe online. Recruitment fraud is on the rise, and Arup’s name, logo, and branding have been used in fraudulent job advertisements.