# John Sager > Senior Software Engineer specializing in TypeScript, React and Node Location: Austin, Texas, United States Profile: https://flows.cv/johnsager Full stack developer with extensive experience in the Health Tech space, dedicated to delivering great software experiences for both Patients and Clinicians. Expertise building React and Next.js applications from the ground up - contributing to the development of modular, dynamic and reusable UI components for use across multiple web applications in collaboration with UX Designers and Product Managers. Practical knowledge in architecting and engineering backend APIs using TypeScript, Node/Express, Nest.js, Go, C#/.NET, Entity Framework, GraphQL, Apollo, and SQL. Oh... and I like to paddle board. ## Work Experience ### Senior Software Engineer @ Sun Life Jan 2023 – Present • Collaborated with cross-functional teams to develop user-centric insurance solutions. • Led initiatives enhancing UX, security, performance, and accessibility of products. • Improved Developer Experience (DX) through better tooling and documentation, reducing bugs significantly. ### Senior Software Engineer @ Eleanor Health Jan 2022 – Jan 2023 | Austin, Texas, United States • Spearheaded the development of the member-facing application to support individuals facing substance abuse disorders. • Collaborated with stakeholders to gather requirements for secure and accessible frontend features. • Enhanced user experience through responsive, mobile-first design. ### Senior Software Engineer @ athenahealth Jan 2021 – Jan 2022 | Austin, Texas, United States Harmonizing payments across the Patient Experience ### Software Engineer @ athenahealth Jan 2019 – Jan 2021 | Austin, Texas Worked on products to improve the way patients pay their medical bills online. ### Software Developer @ VersaSuite The Adaptive HIS/EHR/EPM/ERP Solution Jan 2018 – Jan 2019 | Austin, Texas Area ✔️ Converted multiple legacy desktop applications into web based solutions. Primarily using React, Node, C#/.Net 🩺 Developed a Patient Portal application adhering to Meaningful Use requirements 🏥 Involved in the development of a web based EHR app ✔️ Helped develop a FHIR compliant API using Node ## Education ### Associate of Science - AS in Computer Programming Austin Community College Jan 2014 – Jan 2016 ### Physical Therapy Technician/Assistant Kapi‘olani Community College Jan 2010 – Jan 2012 ## Contact & Social - LinkedIn: https://linkedin.com/in/john-sager-dev --- Source: https://flows.cv/johnsager JSON Resume: https://flows.cv/johnsager/resume.json Last updated: 2026-03-22