Job Title

The ChallengeHealthcare technology requires seamless integration of patient-facing applications, clinical systems, external partners, and financial workflows—while maintaining the security, reliability, and auditability that regulated environments demand. As healthcare AI advances and new treatment models emerge, the industry needs engineering leaders who can architect scalable platforms, drive technical excellence, and deliver production-grade systems that translate clinical requirements into real-world outcomes.The OpportunityOwn the technical delivery and architecture of Onsera's core product platforms, from wearables integration and health data pipelines to member payments and AI workflows. As a player-coach, you'll design and implement full-stack solutions while setting engineering standards and help build and mentor our engineering team as we scale. This role offers the opportunity to shape API-first architectures, lead complex integrations with healthcare partners and SaaS platforms, and transition into engineering leadership as the organization scales.What You'll DoOwn technical delivery of multiple Onsera products from design through production and iterationDesign and implement full-stack solutions spanning frontend applications, backend services, APIs, agentic systems and third-party integrationsDefine and evolve API-first, integration-driven architectures that support internal systems and external partnersLead complex integrations with SaaS vendors, healthcare partners, wearables platforms, and pharmacy fulfillment systemsArchitect and implement member payment platforms, including fee collection, reconciliation, and financial reportingDefine and enforce software engineering standards, including coding conventions, testing practices, and documentationConduct rigorous code reviews focused on correctness, security, performance, and maintainabilityMentor engineers and gradually transition into line management as the engineering organization growsMinimum Qualifications8+ years of experience as a Full-Stack Engineer delivering production systems, with track record at Senior or Principal levelProficiency across frontend and backend development, including modern web frameworks and API designProven experience integrating with third-party SaaS platforms and external partnersStrong background in automated testing strategies and quality-driven developmentExperience acting as a technical leader or player-coach with demonstrated ability to mentor engineersComfortable collaborating with product, data, clinical, and non-technical stakeholdersPreferred QualificationsStrong written and verbal communication skills for technical and cross-functional collaborationExperience working with PythonExperience with payments, billing, or financial reconciliation systemsExperience in healthtech, regulated environments, or sensitive data systemsFamiliarity with health data ingestion, wearable platforms (Apple HealthKit, Google Fit, Fitbit), or healthcare interoperability patternsExposure to FHIR-based data exchange or healthcare integration standardsPrior involvement in scaling engineering teams or platforms during growth phasesWhat We OfferMission-driven work addressing critical healthcare challenges in cardiometabolic careGround-floor opportunity to shape technical architecture and engineering cultureDirect collaboration with product managers, data scientists, ML engineers, and clinical expertsPartnership with a world-class team of venture capitalists, innovators, technologists, bioscientists, and cliniciansGrowth path into engineering leadership as the organization scalesCompetitive salary and benefits package, including participation in our equity programAbout Onsera HealthWe are an early-stage health AI company revolutionizing cardiometabolic care and population health economics. Our unique position within the PHP ecosystem provides:Venture track record: A proven track record of success in building biotech and healthcare companiesDeep capital: Funding and resourcing to support deep tech and scientific R&D—and to drive growthStrategic guidance: Direct access to industry pioneers (including founders of The Medicines Company and Metsera), strategists (McKinsey/QuantumBlack alumni), and world-class scientific talent (e.g., scientific leaders at Oxford University, Ellison Institute of Technology)Expert network: Established connections across pharma, payers, and providersStartup agility: Ownership in the venture, founder mentality, and ground-floor impactAbout PHPPopulation Health Partners (PHP) is a premier investment firm established in 2020, aimed at transforming health outcomes for large populations. With offices in New York and London, PHP combines financial resources with industry-leading capabilities and technology. The firm's incubation portfolio includes Metsera (NASDAQ: MTSR) and Corsera Health.Leadership: Led by industry veterans including Clive Meanwell (The Medicines Company), Chris Cox (The Medicines Company), and Whit Bernard (Metsera), bringing decades of founder experience and operational excellence in biopharma and healthcare, and Roy Berggren, 30+ year McKinsey Healthcare leader.