Senior Design & Development Engineer (Prototype to Product)

Quell is a high-growth British defence and security AI technology start-up developing solutions to counter drone, vehicle, and human threats across the military, civilian and critical national infrastructure sectors.

Based near Cambridge, we are seeking an exceptional Senior Design & Development Engineer to take innovative concepts from early prototype through to refined, manufacturable products. This is a hands-on, multidisciplinary role for a dynamic engineer who enjoys building, experimenting, problem-solving, and iterating rapidly in a workshop and R&D environment.

Key Responsibilities

• Collaborating with cross-functional teams to design, prototype, and develop new products
• Using CAD software to produce detailed designs, refine concepts, and support prototyping
• Building, testing, and iterating physical prototypes to improve performance and reliability
• Solving complex engineering challenges with practical, innovative solutions
• Improving product durability, efficiency, manufacturability, and overall design
• Working hands-on within workshop and R&D facilities to accelerate product development

Requirements

• Strong hands-on engineering skills and passion for building and problem-solving
• Proficient in CAD software
• Proficient in PCB electronics
• Thorough additive manufacturing experience.
• Knowledge of CAD/PDM methodologies
• Solid understanding of engineering principles and ability to learn new tools and systems quickly
• Experience taking products from concept through prototype to production
• Proactive, self-driven mindset with strong teamwork and communication skills
• Must be able to work on-site in workshop/R&D facilities five days a week
• Must be able to travel at short notice if required

Details

• Location: North Uttlesford / Greater Cambridge area, on-site
• Five days a week on-site (ie: this is not a hybrid role)
• Applicants must be fully eligible to work in the UK without restriction, time limit, or the need for current or future sponsorship.

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