Senior/Lead Embedded HMI Developer (Freelancer)

We are expanding our freelance pool and are looking for Embedded HMI developers interested in upcoming projects.

✅ Project-based contracts

✅ Part-time or full-time options

✅ Remote work

You’ll join an international team focused on designing cutting-edge HMI solutions for embedded systems across multiple industries.

Hourly salary: 140 - 200 PLN

About the Role

As a Senior / Lead Embedded HMI Developer, you will play a key role in designing, developing, and shaping the architecture of embedded HMI solutions.

This role goes beyond pure implementation - you will:

• Influence technical and architectural decisions

• Support and mentor other developers (lead level)

• Act as a technical point of contact in HMI-related areas

You will be part of a dedicated HMI Synergy team, consisting of embedded and UI enthusiasts who actively share knowledge and best practices.

Responsibilities:

• Design and develop embedded HMI / GUI applications

• Define and influence HMI architecture and design patterns

• Develop graphical interfaces using:

  • Qt / QML (Embedded Linux)

  • Qt for MCUs, LVGL, or other MCU-focused frameworks

• Optimize rendering pipelines on constrained embedded systems

• Integrate UI layers with firmware, drivers, and hardware

• Analyze performance bottlenecks (CPU, memory, rendering, FPS)

• Support code reviews, technical decision-making, and mentoring (Lead role)

• Collaborate with embedded, firmware, hardware, and UX teams

• Participate in Proof of Concepts (PoCs) and early project phases

Core Requirements:

• 5+ years of experience in embedded software development

• Strong expertise in Embedded HMI development

• Excellent C++ skills, including modern C++

• Hands-on experience with microcontroller platforms such as:

  • STM

  • NXP

  • Espressif

  • Infineon

  • Renesas

• Commercial experience with at least one embedded HMI framework:

  • Qt for MCUs

  • LVGL

  • TouchGFX

  • Slint

  • Crank

  • Embedded Wizard

• Knowledge of rendering pipeline optimization in embedded systems

• Solid understanding of architecture and design patterns

• Experience with version control, code reviews, and CI/integration tools

• Communicative English (spoken and written)

Nice to Have:

• Experience with RTOS environments:

  • FreeRTOS

  • Zephyr

  • other RTOS solutions

• Understanding of Agile methodologies

• Experience working on Proof of Concept (PoC) projects

• Familiarity with hardware schematics and low-level debugging

• Exposure to UX/UI design principles for embedded systems

• Experienced in using AI tools in day-to-day workflow

🔥 Why join our HMI team?

➡️ You will work on diverse, industry-grade embedded products (e.g. audio processing, industrial devices, smart electronics)

➡️ You get real influence on system architecture and technology choices

➡️ You’ll collaborate with HMI and embedded experts who are passionate about UI on constrained systems

➡️ We are a Certified Premium Partner of The Qt Company and part of the Qt Service Partner Program, actively contributing to the Qt ecosystem