Seumas MacKay

Early-career operator with an engineering background, experienced working directly with founders in fast-moving startup environments. Skilled at translating ambiguous problems into structured execution across strategy, operations, and commercial initiatives. Combines analytical thinking with hands-on delivery, with experience supporting decision-making, coordinating cross-functional teams, and driving projects from concept through to execution.

Product Design Engineer (Founder-Adjacent Operator) at Theo Health (2024-09 – Present)

• Worked directly with the founder across product, operations, and partnerships, translating priorities into structured execution and coordinated delivery across teams.
• Delivered a high-fidelity vision prototype within a 10-day sprint, securing a strategic LOI with Real Madrid and supporting commercial validation and partner engagement.
• Led an 8-week cross-functional initiative with a PGA Tour athlete/investor, coordinating stakeholders to deliver outputs informing a £300k investment decision.
• Conducted cost-benefit and trade-off analysis across prototyping and supplier decisions, reducing development costs by £3k while improving iteration speed.
• Built internal workflows and documentation systems to improve coordination, execution speed, and alignment across engineering, operations, and partnerships.
• Managed international supplier relationships across Europe and Asia, balancing feasibility, cost constraints, and delivery timelines in a resource-constrained environment.
• Structured and delivered a university partnership, resulting in two hires and £20k+ equivalent validation and research support.
• Designed and built internal testing infrastructure to improve validation reliability and support data-driven product and development decisions.

Entrepreneur Fellowship at University of Strathclyde (2022-09 – 2023-12)

• Developed a venture from early ambiguity to MVP and defined business model, securing £7,500 in non-dilutive funding and owning execution across workstreams.
• Conducted 50+ customer interviews and competitive analysis, translating insights into positioning, roadmap decisions, and early go-to-market strategy.
• Built pricing frameworks and commercial models to support decision-making and evaluate revenue potential across different market approaches.
• Developed investor materials and structured narratives to communicate product value, market opportunity, and execution plans clearly.
• Operated independently across multiple workstreams, managing priorities, and delivering outputs in a fast-paced, high-ambiguity environment.

MEng in Sports Design Engineering – University of Strathclyde (2019-09 – 2024-06)

– Høgskulen på Vestlandet (2022-01 – 2022-06)