Senior Mechanical Engineer

LOCATION: CALMSDEN, CIRENCESTER, UK - WITH FIELD TRAVEL AS REQUIRED ON-SITE: 5 DAYS THE LAST FRONTIER The Arctic is a place of extremes: unforgiving, untamed, and undergoing rapid change. A literal defrosting reveals a multi-trillion-dollar opportunity spanning energy, defence, logistics, research, and infrastructure. Arctic Research and Development (ARD) was founded on a paradox. The Arctic is both the next great economic frontier and one of the most hostile environments on Earth. Rich in resources and strategically vital, yet bone-chillingly cold, dark for months, and fundamentally inhospitable to humans. This paradox—an explosion of activity in a place that resists human presence—is why we exist. Our solution is autonomy. We build systems that operate reliably and intelligently in the Arctic, so that humans don't always have to. Founded by record-holding pioneers with decades of polar experience, we take calculated risks on hard problems that matter. If you want to build and deploy ground-up technology with real-world impact, at an inflection point in history that won’t reappear, we’d like to talk. THE ROLE We’re looking for a Senior Mechanical Engineer to own the design, build, and deployment of cold-hardened hardware — from field-ready energy systems to autonomous surface and sub-surface platforms. You’ll work from first principles to engineer real-world solutions that operate where failure isn’t an option. You’ll be responsible for end-to-end design, push hardware and material limits, and take your work into the field — from the workshop to the Arctic. CORE RESPONSIBILITIES Design, test, and deliver Arctic-ready hardware from cradle to deployment for ARD’s product-line Drive materials choices, joinery, sealing, and reliability under thermal/mechanical stress Run cold-chamber and durability testing, along with Test Engineer, to ensure performance in sub-zero climates Integrate closely with electrical, software, and deployment teams (systems, software, GIS, RF) Set QA standards to ensure our systems stay bulletproof in the harshest conditions Travel to the Arctic for R&D field testing and meetings with industry reps REQUIRED EXPERIENCE 5+ years industry experience developing hardware for extreme environments A degree in Mechanical or Aerospace Engineering with a portfolio of high-fidelity hardware development Advanced skills in 3D CAD (SolidWorks, PDM) Experience with taking a product from concept design to production, with a strong grasp of DfMA Hands-on prototype and testing experience, working alongside multi-disciplinary engineering teams Readiness to operate in safe but cold environments while conducting R&D prototype field tests DESIRABLE SKILLS Knowledge of environmental and reliability testing (e.g. thermal cycling, vibration, shock) Familiarity of electrical systems to ensure a holistic approach to hardware design Basic understanding of RF systems and components Previous experience working within an R&D workshop WHAT WE OFFER Competitive compensation Equity: meaningful options as an early employee at an early-stage company Private Healthcare for you and your family, including dental and optical Enhanced maternity & paternity leave Real field exposure: travel to Arctic sites and Outposts when needed (genuinely, not as a gimmick) Mission-driven culture: focus on impact, not hours logged Small team, real ownership: what you build matters and ships A note on who we want to hear from We're building for one of the most demanding environments on Earth and we believe diverse teams build more resilient systems. We actively welcome applications from people who are underrepresented in engineering - whether that's by gender, ethnicity, disability, or background. If you're not sure you meet every requirement, apply anyway and tell us what excites you about the problem. Find more English Speaking Jobs in United Kingdom on Arbeitnow