Design Engineer at CLER in Stockholm, Stockholm County, Sweden

CLER

CLER is a deep-tech start-up that is revolutionising global air purification. We have developed a product that will eliminate the global dependency on disposable air filters. Our state of the art product requires no maintenance, offers outstanding energy-efficiency and provides higher clean air quality than any other system in the market.The technology does not only clean air like no other system, but it also uses less energy when doing so.

Only seven countries worldwide meet WHO dirty air guidelines. Air pollution is estimated to cause 7 million premature deaths globally each year. Asia, Eastern-Europe and many other areas suffer from incredibly bad air quality which has little to no solution. At the same time, Europe is leading the way with their Energy Performance of Buildings Directive (EPBD), aiming to make all buildings greener and putting pressure on real estate owners to lower building emissions. All these areas present a global opportunity that requires an extreme level of grit, ownership, bold moves and flexibility.

We aim to become the new global standard in air filtration. Our ambition is to redefine how the world cleans its air - by cutting waste, reducing CO₂ emissions and protecting public health.

Key Responsibilities

• Lead mechanical and structural design of air purification systems and components, from concept through detailed engineering, prototyping and industrialisation.

• Develop and maintain CAD models, drawings, and design documentation

• Collaborate with sales, product management, and suppliers to ensure manufacturability, performance, and cost efficiency.

• Support testing, validation, and design iterations in close cooperation with our laboratory team.

• Ensure compliance with relevant environmental, safety, and certification requirements.

• Contribute to continuous improvement in design processes, tools, and methods.

Required Skills & Qualifications

• Bachelor’s or Master’s degree in Mechanical Engineering, Product Development, or a related field.

• 3+ years of experience in mechanical design, ideally in HVAC, appliances, or related industries.

• Strong proficiency in CAD (e.g., SolidWorks, Creo, or similar).

• Experience with prototyping and working hands-on with mechanical assemblies.

• Solid knowledge of materials (plastics, metals) and manufacturing processes (injection molding, machining, extrusion, etc.).

• Ability to communicate effectively in English, both verbally and in writing

Preferred Skills & Experience

• Experience from HVAC, filtration, or clean tech industries.

• Background in designing for industrialization and large-scale manufacturing.

• Familiarity with simulation tools (FEA/CFD) for performance optimization.

• Experience working with international suppliers and OEM/ODM partners.

• Knowledge of sustainability-focused design and Life Cycle Assessment (LCA).