Software Engineer – 3D Printer behaviour

Zellerfeld Shoe Company Inc.; Hamburg; Vor Ort; EUR 70.000 - 100.000; Vollzeit

Benefits dieser Stelle

Office in Hamburg

Travel to Austin, USA

Zusammenfassung

Zellerfeld Shoe Company Inc. is seeking a firmware/controls engineer to shape the architecture of our in-house 3D printers and push Klipper to its limits. You will work across software and hardware to deliver production-grade, reliable printers and robust interfaces between microcontrollers, sensors, and networks.

You will join a team that values deep debugging, performance, and cross-disciplinary collaboration, with an on-site Hamburg base and travel to our Austin farm required.

Qualifikationen

• Experience with low-level printer control and production-grade systems.
• Built or deeply modified a 3D printer; familiarity with Klipper or similar firmware.
• Strong software engineering background with focus on performance, precision and scalability.
• Mechatronics mindset and understanding of motion physics and sensors.
• Analytical thinker who logs, analyzes data, and finds root causes.
• Willing to join at Hamburg office and travel to Austin regularly.

Aufgaben

• Firmware and control: design, develop, and maintain printer control software.
• Architectural ownership: improve current architecture at scale.
• Interface specialist: robust communication between microcontrollers, sensors, actuators, and networks.
• Deep debugging across software and hardware boundaries using data-driven methods.
• Fleet management: build scalable remote diagnostics and monitoring for printing farms.
• Collaborate across operations, hardware and electrical engineering teams.

Kenntnisse

Low-level firmware development

Embedded systems

C/C++

Klipper

Software architecture

Diagnostics & debugging

Tools

Klipper firmware

Jobbeschreibung

Zellerfeld is revolutionising the footwear industry with the world’s first 3D-printing technology for fully customizable shoes. Our goal is simple: printed shoes on every foot. We’re a passionate team of engineers, designers, and innovators, questioning the status quo and disrupting traditional manufacturing processes. Backed by founders, influencers, and celebrities who believe in our vision, we’re committed to making a lasting, positive impact— not just on the footwear industry, but on the world.

Your Mission

Do you watch CNC Kitchen to fall asleep? Is your self-built Voron, RatRig, or completely custom CoreXY printer your absolute pride and joy? Are annoyed by printers calibrating for ages for a 10 minutes printjob?

Then keep reading. At Zellerfeld, we are building the next generation of 3D printing systems. We aren't looking for a corporate code monkey; we want a true 3D printing nerd who loves bridging the gap between high-level software and hardware. You will play a critical role in shaping the architecture and behaviour of our 3D Printers, pushing Klipper to its absolute limits, and leading the Zellerfeld techstack into the future.

What We Are Currently Working On (Your Future Playground)

We are tired of macros wasting time, unclear failures and 3D printers which are sensor-heavy but insight-poor. We are building the most capable 3D printers on the market and are currently focusing on the following areas:

• Next-Level Z-Leveling: Perfecting dynamic calibration, not just for standard filament extruders, but for a variety of specialized tools managed by our custom toolchanging system.
• Closed-Loop Error Recovery: Moving away from dumb failures. We are implementing real-time monitoring to detect lost steps, improper tool engagements, or component defects. We want machines that react and recover autonomously.
• Advanced Tool Management: Creating bulletproof state machines for complex tool changing where micrometer precision is everything.

What You’ll Do

• Firmware & Control: Design, develop, and maintain control software for our in-house 3D printers.
• Architectural Ownership: Understand and improve the architecture of the current printer control implementation, making critical decisions which scale.
• Interface Specialist: Implement robust communication interfaces between microcontrollers, sensors, actuators, and networked systems.
• Deep Debugging: Hunt down system-level issues across software and hardware boundaries using a structured, data-driven approach.
• Fleet Management: Help build scalable systems that support remote diagnostics, monitoring, and fleet management for our printing farms.
• Cross-Disciplinary Teamwork: Work closely with operations, hardware and electrical engineering teams to ensure seamless end-to-end integration.

Your profile

• First things first: You love low-level printer control, hate unreliable prints, and want to build a robust, production-grade system that runs like clockwork.
• The Nerd Factor: You have built or deeply modified your own 3D printer. Terms like Input Shaping, Pressure Advance, CAN-bus, Sensorless Homing, and macros are a natural part of your vocabulary.
• Software Background: You are a seasoned Software Engineer with a strong focus on performance, precision, and scalability across the software stack.
• Mechatronics Mindset: You have experience with mechatronic systems. You understand the physics behind the motion and how stepper motors, servos, and sensors interact in detail.
• Analytical Thinker: When a print fails, you don't just re-level the bed. You log in, analyze the data, and find the actual root cause.
• As a company specializing in both hardware and software, we value close collaboration within our team. Therefore, we are seeking candidates who can join us at our office in Hamburg. Flexibility to travel regularly to our Austin farm in the US is also required.