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About the Role
We are looking for four Embedded C++ Developers to join an in-house backend engineering team working on a highly regulated, safety-critical medical technology product. 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 work closely with the Software Architect and engineers responsible for surrounding components, while taking ownership of delivery within your area. This role is well suited to 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.
Responsibilities
- Own a self-contained area of the application, taking work from initial design through to merged, tested and documented code.
- Develop technical alarm conditions based on hardware and operating system telemetry.
- Implement patient sensor, signal quality and external monitoring alarms.
- Build robust fault handling and recovery mechanisms.
- Develop power-on checks covering logging, hardware compatibility, GPU checks and system self-tests.
- Integrate watchdog and system supervision mechanisms.
- Support interrupted-session detection and recovery.
- Develop logging, audit logging and log rotation functionality.
- Develop storage interfaces supporting atomic and checksummed writes.
- Manage reading, deletion and session listing across fixed storage partitions.
- Build patient-data packaging, queueing, flushing, retention and retrieval functionality.
- Support data back-fill and historic data presentation.
- Develop versioned interfaces between backend data and the GUI.
- Manage patient sensor and session lifecycles.
- Support session metadata, recovery and graceful shutdown.
- Develop power-button handling and controlled power-down functionality.
- Support USB data export functionality.
- Work with service tools and device service handlers.
- Support software updates, confirmation and rollback.
- Implement log extraction and audit logging.
Requirements
- Strong experience developing modern C++17 applications on embedded Linux.
- Strong 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.
- Experience with allocation-free or low-allocation runtime environments, including pre-allocated memory and fixed-capacity containers.
- Experience 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.
- Experience with CMake, automated testing and CI/CD pipelines.
- Experience with cross-compilation, ideally for aarch64 platforms.
- Strong experience with unit testing, code coverage and quality gates.
- 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.
- Experience developing medical devices or other safety-critical systems.
- Knowledge of IEC 62304, ISO 13485 or similar regulated software development standards.
- Experience with medical alarm systems or other alarm and fault-management systems.
- Understanding of IEC 60601-1-8 or equivalent safety standards.
- Experience working with state-machine-driven supervisors and fault-management systems.
- Experience with NVIDIA Jetson, CUDA or GPU-accelerated processing.
- Experience with Yocto and embedded Linux board-support packages.
- Experience with 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.
Skills
- C++17
- Embedded Linux
- NVIDIA Jetson
- aarch64
- Yocto
- CMake
- Conan
- Docker
- GoogleTest
- FlatBuffers
- Boost.Asio
- D-Bus
- systemd
- sd_notify
- Unix-domain sockets
- NVMe storage
- SonarQube
- MISRA C++ 2023
- Doxygen
- CI/CD
- target-hardware testing
- RAII
- std::atomic
- multithreading
- lock-free queues
- bounded queues
- ports-and-adapters architecture
- hexagonal architecture
- dependency injection
- Linux systems integration
- services
- watchdogs
- system-level fault management
- IPC
- serialisation
- cross-compilation
- unit testing
- code coverage
- quality gates
- peer review
- traceable changes
- documented design decisions
- safety-critical software
- mission-critical software
- highly regulated software
- medical devices
- IEC 62304
- ISO 13485
- medical alarm systems
- alarm management systems
- fault-management systems
- IEC 60601-1-8
- state-machine-driven supervisors
- CUDA
- GPU-accelerated processing
- embedded Linux board-support packages
- OpenSSL
- TensorRT
- GoogleTest
- behaviour-driven testing
- Gherkin
- Python
- software FMEA
- risk controls
Location
- London
Work Type
- Contract
- Onsite (2-3 days per week)
Experience Level
- Senior
- 12 week contract
About the Company
- AND Digital are on a mission to close the world's tech skills gap.
- We help organisations navigate the future of technology by combining human expertise, emerging tech and AI to deliver better outcomes, faster.
- Since 2014, we've worked alongside clients to solve complex challenges, build high-performing teams and create lasting capability.
- Today, we're over 1,300 people across the UK, Europe and the USA, with ambitious plans for continued growth.
Equal Opportunity
- AND Digital is an equal opportunity employer.
- We welcome applications from people of all backgrounds and experiences and are committed to creating an inclusive workplace where everyone can thrive.
- We will make reasonable adjustments throughout the recruitment process where required.