Mechanical Design Engineer
At Sort A Brick, we believe toy building bricks deserve a second life. We're developing an AI-powered automated sorting system to identify and sort thousands of LEGO® parts into sets at industrial scale – making reuse both practical and sustainable.
So far, we’ve successfully built two generations of proprietary machinery with the help of subcontractors. Now, we’re seeking an in-house Mechanical Design Engineer to take our hardware design to the next level. Grow quickly in this role, and you could soon lead the entire mechanical engineering effort at Sort A Brick.
Get to know us better – a feature-length editorial on Sort A Brick was published in Verslo Žinios, a leading Lithuanian business media outlet: the LT version is here >>>> and the EN version is here >>>>

Your Role
As a Mechanical Design Engineer, you’ll support the development of our electromechanical brick recognition and sorting systems – working closely with a team of internal and external hardware and software engineers to create cutting-edge prototypes and then turn them into scalable, high-performance machines.
Responsibilities
Design mechanical and automation elements of brick recognition and sorting machines.
Prepare detailed manufacturing drawings and technical documentation.
Conduct hands-on prototyping and experimental testing.
Collaborate with external manufacturers and R&D subcontractors.
Ensure designs are efficient, manufacturable, and system-compatible.
What You Bring
Bachelor’s degree in mechanical engineering (or a related field).
3–5 years of experience in mechanical and automation design.
Background in systems involving conveyors, robotics, or optical devices.
Proficiency with 3D CAD tools.
Hands-on experience with prototyping and fast-paced experimentation.
Strong communication skills in English, suited for technical collaboration.
Nice-to-Haves
Familiarity with optical components (cameras, lenses, lighting systems) and/or integration of computer vision.
Experience with conveyor-based automation or computer vision systems.
Knowledge of DFM/DFA principles and simulation tools.
Master’s degree or higher in mechanical engineering.
What We Offer
Competitive Salary: €3,500–€5,500/month gross, depending on experience.
Equity Stock Options: Become a co-owner in a high-growth venture.
Work Flexibility: Primarily on-site, with occasional work-from-home.
Dynamic Team Environment: Collaborate with a passionate, experienced, and result-driven team that values innovation and open communication.
Career Growth: Gain exposure to cutting-edge technologies and actively contribute to meaningful projects with substantial real-world impact.
How to Apply
Send me your CV to [email protected] with the subject: Mechanical Design Engineer
Alternatively, drop me a line on LinkedIn - https://www.linkedin.com/in/ilyamalkin/
