Mechanical Design Engineer

Infrasonik; Stockholms län; On-site; SEK 420,000 - 680,000; Full time

Job summary

Infrasonik is a small Swedish deep tech company based in Spånga, Stockholm. We are seeking a Mechanical Design Engineer to own the full lifecycle of prototype machines from concept to production readiness, including design, simulation, prototyping and refinement.

The role requires a strong background in machine design, proficiency in SolidWorks, GD&T knowledge and hands-on ability on the shop floor. Fluency in English and Sweden residence with daily commuting are essential.

Qualifications

• 3+ years of mechanical design experience.
• Proficient with CAD software (SolidWorks preferred).
• Strong understanding of GD&T and manufacturing techniques.
• DFM/DFA knowledge for manufacturability.
• Experience with FMEA and simulations.

Responsibilities

• Take prototype machines from concept to production readiness, designing, simulating, prototyping and refining.
• Collaborate with production teams and work on the shop floor to solve problems hands-on.
• Ensure designs are manufacturable and ready for production.

Skills

Machine design

Problem-solving

Hands-on workshop

Fluent English

Tools

SolidWorks

Job description

We're Hiring: Mechanical Design Engineer

We're looking for a Mechanical Design Engineer to own the full lifecycle of our prototype machines — from initial design concept all the way through to production.

Shortly about Infrasonik:

Infrasonik is a small Swedish deep tech company based in Spånga, Stockholm, with nearly a decade of technology development. We're a small team with a big ambition: to make industrial drying and cooling radically more energy-efficient by using a mechanism no other company in our field relies on, low-frequency acoustic waves rather than convection, mechanical compression, or chemical processes. This physical difference takes shape in two products: InfraDryer for food processing and agriculture, and InfraCooling for the steel industry. At Infrasonik we speak both English and Swedish, but fluent English is a requirement.

What you'll bring:

• Strong background in machine design (at least 3 years of prior experience in the field)
• Proficiency in CAD software (SolidWorks preferred)
• Solid understanding of production drawings, GD&T, and manufacturing techniques
• DFM/DFA knowledge — designing parts that are manufacturable, not just functional
• Technical understanding of FMEA and simulations (static and dynamic)
• Strong problem-solving skills — able to troubleshoot on the fly and think on your feet
• Hands‑on mechanical aptitude — comfortable in the workshop as well as behind a screen
• Fluent in English
• Must live in Sweden with the ability to commute to our office daily, and hold a valid work permit

Extra credit:

• Experience designing and running experiments/tests — knowing what methods and test protocols to apply (DOE, instrumentation, data analysis)
• Knowledge of sound/acoustics theory

What the role looks like:

You’ll take prototype machines from concept and design through to production readiness — designing, simulating, prototyping, and refining until it’s production‑ready. This means you’ll need to be equally comfortable at a CAD workstation, working with production teams, and on the shop floor solving a problem hands‑on.

Benefits with working at Infrasonik:

At Infrasonik, you won’t be one voice among hundreds. We’re a small team, which means the work is varied by necessity, not by design, and the responsibility that comes with that is real: your input shapes not just the product, but the decisions the company actually makes. We hold zero tolerance for discrimination of any kind. We help each other, think out loud together, and trust each other to get things right without someone looking over your shoulder. It's a place built on openness and mutual respect, where being part of a small company means your work is visible, not buried in a larger structure.