What technologies does the Functional Safety and Embedded Software Team use?

We primarily work with We program in C/C++ (RTOS environments), Structured Text (IEC 61131-3) for safety PLCs, utilize safety-compliant fieldbuses.

Who succeeds on the Functional Safety and Embedded Software Team?

Successful engineers typically have experience in: Engineers who value absolute correctness, have experience in real-time programming, understand electrical/functional safety architectures.

Functional Safety and Embedded Software Team

At a Glance

The Functional Safety and Embedded Software Team The Functional Safety and Embedded Software team writes certifiable, real-time code and programs safety PLCs to protect humans and machines.

Team Mission

We build high-performance automation software and systems at Mujin, enabling autonomous perception, motion planning, and real-time execution.

Core Responsibilities

We ensure our high-speed robotic systems operate with guaranteed safety:

Safety PLC Programming

We write certified, fail-safe logic for industrial safety PLCs (using Structured Text or Function Blocks) to manage safety signals.

RTOS Software Development

We develop deterministic, low-level firmware and drivers on real-time operating systems to handle safety-critical sensors.

Standards Compliance

We calculate safety parameters (PL, SIL, PFHd) and verify safety architectures to meet CE and ISO 13849 standards.

Tech Stack & Workflows

We follow strict, deterministic design principles:

Safety PLC & Fieldbus Technologies
- Safety PLCs (e.g., Beckhoff TwinCAT Safety, Keyence, Siemens).
- Safe communication protocols (FSoE, PROFIsafe, CIP Safety) over Industrial Ethernet.
Deterministic Embedded Software
- Embedded C/C++ running on real-time kernels or RTOS.
- Using static code analyzers and strict design checks (MISRA guidelines).
Validation & Assessment Workflow
- Rigorous timing analysis, logic coverage verification, and fault-injection tests.
- Creating systematic safety documentation for third-party compliance reviews.

Who Succeeds in Our Team

We look for highly methodical engineers who prioritize absolute reliability:

Technical Competence: Strong experience in safety PLCs, real-time code development, and safety fieldbuses.
Effective Collaboration: Working with Hardware and Robotics teams to integrate safety sensors into robot behaviors.
Continuous Learning: Remaining updated on new ISO safety standards and fail-safe hardware solutions.

Open Positions

If you are excited to build certifiably safe control systems for robotics, apply today:

View Open PositionsCheck out our active job openings in Tokyo and become part of our international team.