Director of Software

About SiPhox Health SiPhox is bringing silicon-photonics diagnostics out of the central lab and into the home. We combine photonics, microfluidics, embedded systems, cloud software, and semiconductor-grade manufacturing to quantify multiple biomarkers in minutes on a coffee-maker-sized device; aiming to build the first mass-market photonic blood analyzer to improve chronic disease care and increase human health span. The Opportunity We're hiring a Director of Software to oversee the software stack across our hardware, cloud services, mobile App, manufacturing and Lab infrastructure. You will provide technical leadership to our team of software and firmware engineers and work closely with other technical leaders to ensure the system meets SiPhox's customers' needs. You will have significant software development experience on multi-disciplined projects with a major hardware element. You will be comfortable discussing cloud scaling strategies before switching to supporting a processor level troubleshooting embedded issue. You will be developing software yourself, whilst supporting a high performing team to meet the company's needs. This role will require occasional travel to manufacturing sites in the US and internationally. This is an in-person role, including working closely with the hardware team at our lab. What You'll Do Technical • Own the software user experience, creating compelling solutions that users love • Define and own the SiPhox software system architecture • Develop system and subsystem requirements for developers • Develop software for use in the SiPhox system, covering the hardware, Cloud, App and lab infrastructure • Lead the software verification and validation process to contribute to a Design History File for regulatory submission. Leader • Lead a team to meet challenging deadlines whilst maintaining high quality standards and motivating engineers • Provide mentorship and coaching to engineers at different stages of career growth (approximately 6 engineers) • Leads recruitment efforts to fill gaps as required • Manage external vendors and contractors' software development for SiPhox Cross-Functional Collaboration • Work closely with other technical leaders and contributors around SiPhox to ensure the software/hardware works together as a system, including contributing to and leading design reviews • Act as a team player first, always willing to work with others to find the right overall approach given the broader constraints • Partner with Quality and Regulatory teams to ensure software development aligns with design history file documentation and QMS requirements Process & Continuous Improvement • Own and refine development processes, understanding the right level of rigor for different points of the development process • Lead failure investigations, CAPAs, and non-conformance reports as required What We're Looking For Must-Have • 10+ years of experience in creating software for complex products and systems, • 3+ years of experience leading and managing a team of engineers • Developed software as a medical device (SAMD) for a class 2 or 3 application (IEC 62304 class B or C) • Experienced defining technical product architectures across hardware and software • Experience designing and deploying distributed systems on AWS (or GCP/Azure) • Up-to-date with AI coding tools (e.g. Cursor, Claude etc.) and their practical application for software development for rapidly developing high quality software • Highly capable in modern programming languages, Python, C, C++ etc. • An outcomes-based mindset – able to understand complex problems and find the best way through for the overall system • Strong analytical and troubleshooting skills with a structured approach to root cause analysis • Excellent verbal and written communication in English —able to distill complex technical problems for diverse audiences • Collaborative, low-ego working style; comfortable operating across disciplines and asking good questions • Top-tier work ethic, high standards, and ownership mindset • Able to do occasional travel (<10%) • US work authorization • Bachelor's or Master's degree in relevant engineering or science Good-to-Have • Delivered IVD (in-vitro diagnostics) systems through FDA approval and to the market in the US and/or CE marking in Europe • Experience developing for cybersecurity, including threat modelling, SBOM management and section 524B compliance. • Experience developing mobile Applications for iOS and Android • Experience implementing CI/CD and test automation in regulated environments • Developing fluid handling and/or lab automation systems • Experience with optical or photonic systems • Experience developing firmware in an RTOS and with microprocessors (e.g. STM32) Why This Role Is Unique You will be part of the team developing a novel product category that will be hugely impactful for millions of customers around the world. This is a highly mult