Location
London, 2 days onsite in Kings Cross

Hours
Immediate start - 12 week contract

Salary
Negotiable

About the Role
AND Digital are on a mission to close the world's tech skills gap by combining human expertise, emerging tech and AI to deliver better outcomes, faster. Since 2014, we've partnered with clients to solve complex challenges, build high-performing teams and create lasting capability. We are currently seeking four Embedded C++ Developers to join an in-house backend engineering team working on a highly regulated, safety-critical medical technology product.

In this role, you will own a self-contained area of the application, taking work from initial design through to merged, tested and documented code. Depending on your experience and the team's needs, this could include areas such as alarms, patient data persistence, device supervision and start-up, session management or service functionality. You will collaborate closely with the Software Architect and engineers responsible for surrounding components while taking ownership of delivery within your area.

This position is ideal for an experienced Embedded C++ Engineer who has worked on Linux-based safety-critical, mission-critical or highly regulated products and is comfortable working with formal quality processes, static analysis, code coverage and rigorous testing requirements.

Key areas of work include:
- Developing technical alarm conditions based on hardware and OS telemetry including battery, temperature, clock, power faults and telemetry quality
- Implementing patient sensor, signal quality and external monitoring alarms
- Building robust fault handling and recovery mechanisms
- Developing power-on checks, fail-safe states, fault management and system supervision mechanisms
- Managing patient data persistence, packaging, queueing, flushing, retention and retrieval
- Supporting session lifecycle management, power-down functionality and USB data export
- Working with service tools, software updates, log extraction and audit logging

You will be part of a dynamic engineering environment using technologies such as C++17, Embedded Linux, NVIDIA Jetson, Yocto, CMake, Docker, GoogleTest, FlatBuffers, Boost.Asio, systemd, D-Bus and more.

Experience
- Strong experience developing modern C++17 applications on embedded Linux
- Solid understanding of RAII, fixed-width types, std::atomic, multithreading and lock-free or bounded queues
- Experience developing software where deterministic behaviour and reliability are critical
- Skilled in allocation-free or low-allocation runtime environments, including pre-allocated memory and fixed-capacity containers
- Familiarity with ports-and-adapters / hexagonal architecture, interfaces and dependency injection
- Strong Linux systems integration experience including services, watchdogs and system-level fault management
- Experience with IPC and serialisation technologies such as FlatBuffers, Unix-domain sockets or named pipes
- Proficient with CMake, automated testing and CI/CD pipelines
- Experience with cross-compilation, ideally for aarch64 platforms
- Strong unit testing, code coverage and quality gates experience
- Comfortable working within formal engineering processes including peer review, traceable changes and documented design decisions
- Experience working on safety-critical, mission-critical or highly regulated software

About you
- Experienced Embedded C++ Engineer with a passion for quality and reliability
- Comfortable working in regulated environments and adhering to formal processes
- Collaborative team player who takes ownership of delivery
- Motivated to work on complex, safety-critical medical technology products

Qualifications
- Experience developing medical devices or other safety-critical systems is desirable
- Knowledge of IEC 62304, ISO 13485 or similar regulated software development standards is advantageous
- Familiarity with medical alarm systems or fault-management systems
- Understanding of IEC 60601-1-8 or equivalent safety standards
- Experience with NVIDIA Jetson, CUDA or GPU-accelerated processing is a plus
- Experience with Yocto, embedded Linux board-support packages, systemd, sd_notify, D-Bus and journald
- Experience with OpenSSL, TensorRT or similar external technologies
- Experience using Docker for development environments
- Experience with GoogleTest, behaviour-driven testing or Gherkin
- Python experience for tooling and deployment scripts
- Experience contributing to software FMEA activities and implementing risk controls