Innovative solutions
are our passion

Discover what your future products and production will look like.

Four Business Units – A Strong Foundation for Your Solutions

Our expertise spans four core business units that serve various industries with innovative solutions. Whether engineering services, industrial systems, or mechanical engineering – we deliver customized solutions tailored to your specific requirements.
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Expert Knowledge for Thoughtful and Forward-Thinking Design

3DEFACTO
ENGINEERING DESIGN SERVICES

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Tailored Solutions for Industrial Plants and Systems

3DEFACTO
INDUSTRIAL PLANT SOLUTIONS

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Cutting-Edge Machines for Efficient Pipe Processing

3DEFACTO
PIPE PROCESSING MACHINES

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Precise and High-Performance Systems for Wheel Assembly

3DEFACTO
WHEEL ASSEMBLY MACHINES

Engineering with Vision

The Company: 3defacto

For over 25 years, 3defacto has stood for innovative engineering, reliable project implementation and customized solutions. What began as an engineering office has grown into a trusted industry partner – with a clear focus on quality, efficiency, and future readiness.

With an interdisciplinary team of experienced designers, technicians and project managers, we support our customers from concept to commissioning. Whether complex special machines, precision automation systems, or customized plant solutions – we deliver know-how that works. Engineering quality “Made in Germany”.

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Our Values

Partnership

We work closely with our customers and see ourselves as part of the project.

Hands-on

Our solutions are not only innovative but above all feasible and cost-effective.

Forward-Thinking

With an eye on digitalization, sustainability, and efficiency, we shape tomorrow’s technology.

Our References

Since our founding in 2000, we have successfully completed several thousand projects worldwide. Our clients value the collaborative approach and the mutual trust that defines our working relationships.

We’re a team that delivers innovative, professional, and high-quality solutions for our customers. No matter what task we are given – we will implement it. In short: we are the product – from technical drafts people to design engineers.

Peter Ahlmer, Managing Director of 3defacto

Peter Ahlmer and 3defacto

Where Passion Becomes the Future

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Peter Ahlmer, Managing Director of 3defacto

Peter Ahlmer founded 3defacto in 2000 with the goal of uniting innovative engineering and practical machine solutions under one roof. With technical expertise, entrepreneurial spirit, and a holistic view, he developed a company that now employs over 80 people.

As Managing Director, he embodies the values that define 3defacto: quality, reliability, and the courage to explore new paths. His vision is clear – technology that is well-conceived, efficient, and close to the customer. That’s what 3defacto stands for – every single day.

Facts & Capabilities

What makes us special – and what you can expect from us

3defacto at a Glance

  • Founded: in 2000
  • Locations: Darmstadt, Mühltal, and Rieste (all Germany)
  • Employees: 80+
  • Certifications: SolidWorks-certified, WHG-certified specialist company
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What You Can Expect from Us

  • Cost-effective, energy-efficient, and customer-optimized products, machines, and systems
  • High-quality special machinery
  • Specialist network with qualified partners and suppliers
  • On-time, cost-secure project execution at a fixed price
  • Compliance with all relevant standards and regulations
  • Satisfaction guarantee for new customers
  • Fair price-performance ratio

Industry Expertise

  • Pharmaceutical Industry
  • Chemical Industry (polyurethanes, adhesives, prepolymers, paints and coatings)
  • Bulk Material Processing
  • Food Industry
  • Building Materials Industry
  • Paper Industry
  • Garment Industry
  • Logistics and Distribution
  • Automotive, Agricultural Machinery, Wheel Industry
  • General and Special Machine Engineering

Production Capacities

  • CNC turning center and 5-axis milling center
  • Welded constructions
  • Electrical department with panel building
  • PLC programming department
  • Hydraulic systems department
  • In-house measurement lab and pilot plant
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Service-Hotline: +49 6151 7808 110
E-Mail: service@3defacto.de

Contact Person

Your direct line to us

Our contacts are happy to take time for your questions – personally, collaboratively, and on equal footing.
Peter Ahlmer

Peter Ahlmer

Chief Executive Officer

Julian Gieg

Julian Gieg

Head of Assembly

Olaf Gieg

Olaf Gieg

Project Manager/ Authorised Officer

Michael Loch

Michael Loch

Head of Sales / Authorised Officer

Sebastian Schmies

Sebastian Schmies

Head of Electrical Engineering and PLC Programming / Authorised Officer

Career at 3defacto

Shape your future with us!

Since 2000, 3defacto has been developing and building exceptional machines and systems – with passion, precision, and a commitment to “Made in Germany.” Today, more than 80 employees work across three sites in Germany.


We’re looking for people who are hands-on and forward-thinking. We value flat hierarchies, clear structures and offer plenty of room for your own ideas. You like working independently and with purpose? Then you’re a great fit for us.


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Be inspired by a workplace built on real values, a motivating remuneration system with growth potential, and a role that brings joy to your workday. Whether you’re an intern, a working student, or a graduate engineer – we look forward to receiving your application!

What We Offer You

  • Secure position at an established, owner-managed company
  • Modern work environment with well-equipped workstations
  • Flat hierarchies and short decision-making paths
  • Flexible hours and mobile work options
  • Personalized training and development opportunities
  • Strong team spirit – togetherness is what matters to us
  • Good transport connections and free parking

Ready for your next professional challenge?

To get started, we just need your résumé. After a brief review, we’ll invite you for an initial informal meeting– and we look forward to receiving your application!

Any questions?

Feel free to reach out – or send your application directly to: karriere@3defacto.de

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Meet the Team:­ Julian Gieg, Assembly Manager

“I always wanted to be in the workshop,” Julian Gieg recalls. After school he wanted to become an automotive mechatronics technician. But an internship at Porsche in Frankfurt quickly showed him that reality is often different. “You imagine it’s cool, but in reality, the job is mostly changing oil and mounting tires. The tires are insanely heavy. That’s no fun.”

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So, he decided to train as a technical product designer for machine and plant engineering. His first training company wasn’t the perfect fit, but it led him to something better: Gieg got to know 3defacto and applied for a job. He had actually already accepted another job, but 3defacto was an immediate fit and he started as a technical draftsman.

“At 3defacto, everyone gets a mentor. I nearly drove mine crazy because I wasn’t particularly meticulous,” Gieg laughs. It can’t have been that bad – he was soon allowed to make his own drawings, which turned into real test benches.

Gieg later began studying mechanical engineering but stayed with 3defacto. He kept working part-time during the semester and even traveled to Singapore with CEO Peter Ahlmer. Roughly 6,000 miles from Germany, Ahlmer offered him the positon of assembly manager. Gieg accepted and broke-off his studies in the fourth semester. “I’m just a hands-on guy,” he says.

To date, Gieg has spent about 9 months in Singapore. One highlight: a 10-day motorcycle trip through Malaysia during a rare break from the job site – timed perfectly with his 26th birthday. Other projects have taken him to Saudi Arabia, England, France, and Poland. He often travels with Peter Ahlmer, particularly for sales meetings on pipe processing or tire mounting systems. One dream is still on his list: a project in Turkey, which could start soon.

When he’s back at the homesite, he is mainly involved in planning and development. His “baby”: a pilot welding system. And sometimes, he welds it himself.

What was your dream job as a kid?
I wanted to be a race car driver. In a way, I’ve made that happen – I race motorcycles as a hobby.
Your dream car?
An old BMW. For motorcycles, I prefer vintage Ducatis.
What’s your go-to music?
Red Hot Chili Peppers.
Favorite travel destination?
Sardinia.
Favorite drink?
A cold beer – or sometimes a clear schnapps.
Livestory

Our Locations

Technology, Team Spirit, Short Distances

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Main Office / Tech Center – Mühltal

3defacto GmbH
An der Schillertanne 11
64367 Mühltal

P. +49 6151 7808-300
E. info@3defacto.de

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Southern Branch – Darmstadt

3defacto GmbH
Hilpertstraße 20
64295 Darmstadt

P. +49 6151 7808-100
E. info@3defacto.de

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Northern Branch

3defacto GmbH
Hildesheimer Straße 1
49597 Rieste

P. +49 6151 7808-300
E. info@3defacto.de