Product Design Engineer II

Loop Earplugs; Amsterdam; On-site; EUR 60,000 - 84,000; Full time

Benefits offered by this job

32 vacation days

Job summary

Loop Earplugs is seeking a senior mechanical design engineer to own the design of subassemblies from concept through mass production for high-volume consumer products. You’ll master tolerances, material choices, and CMF considerations while coordinating with contract manufacturers and ODMs to ensure producibility.

You’ll lead design reviews, run EVT/DVT/PVT builds, and drive ECOs in Arena, with Onshape as your core CAD tool.

Qualifications

• 5+ years designing injection-moulded parts for high-volume consumer products.
• Experience taking parts through mass production.
• Own component-level mechanical design.
• Balance performance, cost, robustness and manufacturability.
• Familiar with EVT, DVT and PVT processes.

Responsibilities

• Own mechanical design for assigned subassemblies from concept through mass production.
• Conduct design reviews and lead tolerance analysis.
• Execute EVT, DVT and PVT builds, analyse test failures, and iterate.
• Partner with CMs and ODMs on DFM reviews, tooling, Golden Sample alignment and production readiness.
• Author and own 2D drawings and specifications.
• Drive ECOs, drawing releases and change control in Arena.
• Finalise part designs for the components you own, selecting materials, finishes and part construction with input from Sourcing and the CM.
• Approve drawing releases for BOM-level parts and communicate clearly across engineering, sourcing and manufacturing partners.
• Work in Onshape as our core mechanical CAD environment.

Skills

Injection moulding

High-volume design

Tolerance analysis

Material selection

Cosmetic finishes

Design reviews

Onshape

Arena PLM

Cross-functional collaboration

Tools

Onshape

Arena

Job description

Location: Antwerp or Amsterdam

Experience: 5+ years designing injection-moulded parts for high-volume consumer products, with at least one taken through mass production Own component-level mechanical design and help turn robust designs into manufacturable products.

Location: Antwerp or Amsterdam Experience: 5+ years designing injection-moulded parts for high-volume consumer products, with at least one taken through mass production Own component-level mechanical design and help turn robust designs into manufacturable products.

This isn't a lateral move. We built Loop by going all in from day one. Loop makes products people wear in their ears, by the million. Mechanical design here is never only about whether something works - fit, feel, robustness, cosmetics, tolerances, material choice and manufacturability all decide whether a part is right. A 0.1 mm call can be the difference between a product people love and one that comes back to us. You'll own the mechanical design of assigned subassemblies from concept through mass production, balancing performance, cost, robustness and manufacturability. All yours. If you've mastered component-level mechanical design and you're ready to break the rules that no longer work, this is where you do it.

The role

You step into ownership. You move fast and take responsibility for what you build. You focus on work that matters, not on noise that slows things down.

What You’ll Do

• You own mechanical design for assigned subassemblies from concept through mass production
• You conduct design reviews and lead tolerance analysis
• You execute EVT, DVT and PVT builds, analyse test failures, and iterate based on what you learn
• You partner with CMs and ODMs on DFM reviews, tooling, Golden Sample alignment and production readiness
• You author and own 2D drawings and specifications
• You drive ECOs, drawing releases and change control in Arena
• You finalise part designs for the components you own, selecting materials, finishes and part construction with input from Sourcing and the CM
• You approve drawing releases for BOM-level parts and communicate clearly across engineering, sourcing and manufacturing partners
• You work in Onshape as our core mechanical CAD environment

What You Decide, And What You Align On

You decide: part design, material and finish, tolerance scheme, and drawing release for the parts you own.

You align before you commit on anything that moves cost, tooling, timeline or another team's scope - with Sourcing, Electrical Engineering, Quality, and the CM.

Your work is independent. Your decisions aren't a surprise to the people they land on.

How you’ll succeed

We look for people who think big, stay curious, and take ownership of the outcome. You'll succeed by:

• Finding and resolving mechanical issues during EVT, DVT and PVT — not after ramp
• Releasing robust parts on time for key milestones, with minimal avoidable ECO rework
• Holding the balance between tolerances, materials, manufacturing constraints, performance and cost, and iterating fast when validation tells you something has to change

What you’ll bring

• 5+ years designing injection-moulded parts for high-volume consumer products, with at least one taken through mass production
• Strong fundamentals: tolerances and stack-ups, fastening, material selection, and structured root cause analysis of mechanical failures
• Hands-on experience with injection moulding and the processes around small consumer hardware - overmoulding, LSR or silicone, TPE - and a real understanding of what mould flow and tooling constraints cost you when you design around them too late
• A feel for cosmetic surface finish and CMF, and for holding tight tolerances and visual quality at volume
• Experience working directly with CMs or ODMs through tooling, build, validation and ramp
• You interface confidently with cross‑functional partners and communicate clearly during design reviews. You ask for candid feedback and you give it - design reviews are where you want to be wrong early
• You work independently and know which calls are yours and which need Sourcing, EE or Quality in the room first
• Onshape or comparable parametric CAD, and experience in a PLM environment (we use Arena)
• You're comfortable with change and with requirements that keep evolving as prototypes, testing and manufacturing teach us more
• You know when work is ready to ship, and when it can evolve
• You use AI intentionally in your work, knowing where it can improve quality, output, experience or decisions and where it should not be used. You critically evaluate its outputs, catch issues before work ships, and stay accountable for the result

Loop isn’t for everyone. We might not be a match if you:

• Wait for direction instead of taking initiative
• Mistake activity for impact
• Feel uneasy when things are still taking shape
• Prefer alignment meetings over decisions

Still listening?

Good. We are not looking for people to watch from the sidelines. Loopers step in, speak up and go for more. More firsts. More growth. More: I can’t believe we did that. If you are like that too,

Why work at Loop

At Loop we cut through the noise, so the work that matters actually lands. We go all in on impact, connection, and growth. And you’ll feel that the moment you walk in. You’ll know people across teams fast, because candor is care, wins are celebrated loudly, and fun is taken seriously. And when you go all in at work, you also go all in on life. That’s why we give you 32 vacation days, enough time to recharge, travel, or dive headfirst into whatever makes you happiest.

Interview Process

• Application Window: now through 21 September (Applications only accepted in this window)
• Phone Screens (Recruiter and Hiring Manager): 9 September - 25 September
• Onsite Case Study and Stakeholder Interviews: 28 September - 2 October
• Target Start Date: 2 November

The fine print

We know great engineers don't always tick every box. If this role excites you and you believe you can help shape Loop's future, we'd love to hear from you, even if your experience doesn't match every requirement.

We will review all applications. There is no need to send an additional email.

We are continually exploring the best ways to hire and build Loop. This includes the use of AI and assessments as part of our process. If you need any accommodation in this regard, please write to our recruitment team directly.

Compensation Range: €60K - €84K