Dotplot
Embedded Software Engineer
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Embedded Software Engineer
About Dotplot
Dotplot is developing a breast health monitoring tool that empowers women to perform accurate monthly breast self-checks at home. Our mobile app works alongside a handheld ultrasound device to guide users through the scan in real time while capturing location-specific ultrasound images for analysis.
Our mission is to improve breast health awareness and support earlier detection of breast cancer through intuitive, user-friendly technology.
The Role
We are looking for a driven, hands-on Embedded Systems & Integration Engineer to join our London-based core team and help take our handheld ultrasound device towards a robust, production-ready medical device. This is an opportunity to take meaningful ownership of the systems that connect our ultrasound hardware, firmware and mobile application.
You will be responsible for developing and improving our embedded firmware, integrating hardware and sensors, and enabling reliable transfer of ultrasound images and device data. You will also ensure seamless communication between our device and mobile application.
You will work across firmware, electronics and system integration, collaborating closely with our founders, app developers, manufacturing partners, and technical and regulatory advisors. You’ll enjoy this role if you like solving practical, cross-disciplinary engineering problems and seeing your work translate directly into a product people can use.
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What You Will Be Doing
- Develop, test and maintain production-quality embedded firmware, primarily in C/C++ and Python where appropriate.
- Integrate ultrasound hardware, sensors, vendor firmware, SDKs and other device components.
- Design and implement reliable communication between the handheld device and iOS application, including transfer of ultrasound images, sensor data and metadata.
- Integrate positional and sensor data used by Dotplot's real-time scan guidance system.
- Troubleshoot and resolve issues across firmware, electronics, communications and mobile-device interactions.
- Build diagnostics, logging, unit and integration tests to improve device reliability.
- Support hardware revisions, board development and the transition from prototype to production-ready hardware.
- Work with our manufacturing partner to optimise firmware and address technical and production risks.
- Maintain software requirements, design documentation, test evidence, and traceability appropriate for a regulated medical device.
What We Are Looking For
- Strong hands-on embedded firmware development experience in C/C++.
- Experience integrating hardware, sensors, microcontrollers, vendor SDKs or third-party firmware.
- Experience designing communication protocols and reliably transferring binary or high-bandwidth data.
- Strong debugging skills across firmware, electronics and software interfaces.
- Experience taking embedded systems from prototype towards reliable, production-ready products.
- Familiarity with structured testing, version control and technical documentation.
- Strong communication skills and the ability to work effectively in a small, fast-moving team.
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Experience developing software for regulated medical devices, including familiarity with IEC 62304 and ISO 14971, is highly desirable. Experience in other safety-critical or regulated industries is also relevant.
Helpful but Not Essential
- Ultrasound, medical imaging or high-bandwidth sensing.
- IMUs, positional tracking or sensor fusion.
- Signal or image processing.
- Swift/Xcode or embedded-to-iOS integration.
- Python for testing, tooling or prototyping.
- FPGA-based systems.
- Experience working with manufacturing partners to bring hardware into production.
Practical Details
- Location: London-based, hybrid, with 2–3 days each week in the office
- Start date: Latest 1 October 2026
- Engagement: Permanent preferred; contract or contract-to-permanent options considered
- Salary: Up to £60,000 for a permanent appointment
If you’re looking for a role where you can take real ownership, work closely with an ambitious founding team and help bring a pioneering healthcare product to life, we’d love to hear from you.
Please note that at this stage we are unable to offer work visa sponsorship and can therefore only consider applicants who already have the right to work in the UK.
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