Junior Hardware Engineer

Cota Robotics; Stockholms kommun; On-site; SEK 700,000 - 900,000; Full time

Job summary

Cota Robotics, based in Stockholm, is hiring a hardware engineer to advance mechatronics in real-world retail robots. You will build, test, and improve electrical and mechanical subsystems, and deploy robots in stores to observe failures firsthand.

Join a fast-moving, hands-on team that designs parts, prints, and integrates with electronics, then iterates rapidly on hardware based on field feedback. The role starts soon and requires eligibility to work in Sweden.

Qualifications

• Background in mechatronics, mechanical or electrical engineering, robotics or similar.
• Strong problem-solving and hands-on skills in hardware.
• Ability to learn quickly and research unfamiliar problems.

Responsibilities

• Build, fix, and improve electrical and mechanical subsystems on the robot.
• Deploy robots into stores and identify failure points.
• Repair issues and feed insights into next hardware revision.
• Design, 3D-print, and assemble parts, mounts, and fixtures, and integrate them with the electronics.
• Build and test prototypes of new designs.

Skills

Mechatronics background

Robotics

Fast learner

Tinkerer

CAD basics

Cross-disciplinary

Hands-on prototyping

Field experience

Job description

About the role

Cota Robotics puts robots to work in retail stores. They take on the repetitive, time-consuming jobs like inbounding goods, replenishing shelves and sorting stock, currently mostly overnight. They're driven from our control room in Stockholm and increasingly run on their own. We raised a €1.92M pre-seed in August 2026 and are live with retailers in Sweden and Finland. We're a small team based at Sankt Eriksgatan in Stockholm, where half the office is our own dark store.

What you'll do

• Build, fix, and improve electrical and mechanical subsystems on the robot
• Deploy robots into stores and see firsthand where they break
• Fix what’s broken, then turn what you learn into the next version of the hardware
• Design, 3D-print, and assemble parts, mounts, and fixtures, and integrate them with the electronics
• Build and test prototypes of new designs

What we're looking for

• High agency: when something is broken, you fix it, whether or not it’s your job
• Background in mechatronics, mechanical or electrical engineering, robotics, or similar
• A very fast learner, happy to research unfamiliar problems as they come up
• A tinkerer or maker who has taken more things apart than they’ve put back together
• A generalist comfortable across a broad range of components and disciplines
• Able to make something work in the short term and improve it later without confusing the two
• Comfortable with CAD basics and hands-on prototyping
• At home in a chaotic, fast-moving environment
• We expect to fill this role in November or December 2026
• You must already have the right to work in Sweden, as unfortunately, we’re not able to offer visa sponsorship at our current stage

• Build on real robots operating in real stores
• Work across disciplines rather than in a narrow silo
• Learn quickly from field deployments and hardware feedback
• Help shape the next version of the system