Lead Software Engineer

Twin Health At Twin Health, we empower people to improve and prevent chronic metabolic diseases, like type 2 diabetes and obesity, with a new standard of care. Twin Health is the only company applying AI Digital Twin technology exclusively toward metabolic health. We start by building a dynamic model of each person’s metabolism — drawing on thousands of data points from CGMs, smartwatches, and meal logs — that maps their personal path to better health. Guided by a dedicated clinical care team, our members have lowered their A1C below the diabetes range, achieved lasting weight loss, and reduced or even eliminated medications, all while living healthier, happier lives. Working here Our team at Twin Health is passionate, talented, and united by a shared purpose: to improve the metabolic health and happiness of our members. We believe in empowering every Twin to make a meaningful impact for our members, our clients, and each other, while enjoying a supportive, collaborative work environment. Twin has been recognized not only for our innovation but also for our culture, including: Innovator of the Year by the Employer Health Innovation Roundtable (EHIR), selected to CB Insights’ Digital Health 150, and named one of Newsweek’s Top Most Loved Workplace® . With more than $100 million raised in recent funding, including a $53 million Series E round in 2025 led by Maj Invest, and a $50 million investment in 2023 led by Temasek, Twin is scaling rapidly across the U.S. and globally. Backed by leading venture firms like ICONIQ Growth, Sequoia, Sofina, Temasek, and Peak XV, we are building the most impactful digital health company in the world. Join us as we reinvent the standard of care in metabolic health. Opportunity We are seeking a Lead Software Engineer to join our Copilot team and play a key role in shaping the technical direction and execution of our new AI-powered platform. This platform is designed to optimize and enhance the efficiency of our clinical operations teams. This role offers a compelling opportunity at the intersection of backend engineering, healthcare technology, and system integrations. As a technical leader, you will drive architectural decisions, lead complex initiatives, and influence engineering best practices. You will work closely with AI, mobile, and other engineering teams, as well as clinical operations stakeholders, to streamline workflows and ultimately improve the member experience. Responsibilities Design, develop, and scale backend services and RESTful APIs using FastAPI (Python) and Spring Boot (Java). Architect and implement AI agents, including prompt engineering, evaluation, and continuous improvement workflows. Build event-driven systems and well-defined internal APIs to enable reliable, real-time communication across services. Lead technical architecture decisions in close collaboration with engineering and product leadership. Drive product metrics and measurable business impact. Own end-to-end delivery of projects, including design, implementation, testing, deployment, and operational support. Manage and improve CI/CD pipelines to enable safe and rapid feature releases. Monitor, troubleshoot, and optimize system performance to support high throughput and rapid growth. Partner closely with Product, Design, DevOps, and AI/ML teams to align technical execution with Copilot product goals, and effectively communicate trade-offs and progress to stakeholders. Mentor and guide engineers within the Copilot team to uphold high standards of technical excellence. Write clean, testable, and maintainable code following engineering best practices. Take on additional responsibilities as needed. Other duties as assigned Qualifications Bachelor’s degree in Computer Science, Engineering, or related STEM field (Master’s preferred). 6+ years of professional software engineering experience (backend or full-stack). Strong proficiency in Python and/or Java, with hands-on experience building microservices using FastAPI and/or Spring Boot. Deep understanding of API design (REST), authentication/authorization (OAuth2, JWT), and data modeling. Experience designing event-driven systems and distributed architectures. Practical experience working with AI systems, including prompt engineering or AI service integration. Demonstrated leadership experience through prior projects or roles. Strong debugging and performance optimization skills in production environments Excellent written and verbal communication skills. Experience with AWS, Kubernetes, and CI/CD pipelines is a plus Prior experience working on AI-native products or internal developer platforms is a plus. Experience working in fast-paced, high-growth startup environments This remote opportunity based out of the U.S. Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa at this time. Compensation and Benefits The compensation range for this position is $220,000 - $240,000 annually. Twin has an ambitious vision to empower people to live healthier and happier lives, and to achieve this purpose, we need the very best people to enhance our cutting-edge technology and medical science, deliver the best possible care, and turn our passion into value for our members, partners and investors. We are committed to delivering an outstanding culture and experience for every Twin employee through a company based on the values of passion, talent, and trust. We offer comprehensive benefits and perks in line with these principles, as well as a high level of flexibility for every Twin A competitive compensation package in line with leading technology companies A remote and accomplished global team Opportunity for equity participation Unlimited vacation with manager approval 16 weeks of 100% paid parental leave for delivering parents; 8 weeks of 100% paid parental leave for non-delivering parents 100% Employer sponsored healthcare, dental, and vision for you, and 80% coverage for your family; Health Savings Account and Flexible Spending Account options 401k retirement savings plan We have been made aware of fraudulent interview requests being sent using the Twin Health's name. All communications will come from official Twin Health channels and a twinhealth.com email address. We will never ask you to complete a text interview or request financial details during the interview process.