Senior Full Stack Engineer

Vynca; San Mateo (CA); Hybrid; USD 180,000 - 240,000; Full time

Job summary

Vynca is seeking a Senior Full Stack Engineer in San Mateo, CA to help build production-grade care software. You’ll own features from backend APIs to frontend UI on a modern stack (React, TypeScript, FastAPI, GraphQL) with strong ownership and quality in mind.

Join a hybrid team that collaborates with design, product, and engineering to deliver secure, scalable solutions that improve high-touch care. 5+ years of experience required.

Qualifications

• 5+ years of experience in full stack or frontend/backend development roles.
• Proficient in React and TypeScript.
• Experience integrating GraphQL and REST APIs.
• Familiarity with backend frameworks such as FastAPI.
• Knowledge of relational databases (PostgreSQL, MySQL) and ORMs like SQLAlchemy.
• Comfortable with git, monorepos, and Yarn or similar package managers.
• Testing experience on both frontend (Vitest, Testing Library) and backend (Pytest).
• Experience working in Agile teams using Jira and Scrum ceremonies.

Responsibilities

• Design and implement GraphQL and RESTful APIs using FastAPI and Strawberry GraphQL.
• Build and maintain backend services to support UI features, authentication flows, and patient/provider workflows.
• Model data with SQLAlchemy and manage schema changes with Alembic.
• Integrate with third-party APIs (e.g., HealthGorilla, Salesforce, PVerify, Google APIs, Slack).
• Write unit and integration tests using Pytest and testcontainers.
• Maintain API security, access control, and logging practices.
• Event driven architecture, CQRS design patterns, HAPI FHIR Server, Full Text/Fuzzy Search & Semantic Search.

Skills

React

TypeScript

Python

FastAPI

GraphQL

SQLAlchemy

REST APIs

Unit testing

Education

Bachelor's degree in Computer Science or related field

Tools

Apollo Client

Strawberry GraphQL

MUI

Emotion

Formik

Yup

Vite

MSW

Testing Library

Vitest

pdf-lib

LaunchDarkly

Docker

GitHub Actions

Poetry

testcontainers

Jira

Scrum

Job description

Join the dynamic journey at Vynca, where we're passionate about transforming care for individuals with complex needs.

We’re more than just a team; we're a close-knit community. Our shared commitment to caring for each other and those we serve is what sets us apart. Guided by our unwavering core values: Excellence, Compassion, Curiosity, and Integrity, we forge paths of success together. Join us in this transformative movement where you can contribute to making a profound difference every day.

At Vynca, our mission is to provide comprehensive care for more quality days at home.

About the job

We are looking for a Senior Full Stack Engineer with 5+ years of experience building production-grade applications across the stack. You will work on our Vynca Clinical solution, collaborating closely with design, product, and engineering teammates to deliver performant, secure, and user-friendly software that improves the delivery of high-touch care.

You’ll own features end-to-end—from backend APIs to frontend UI—and work across a modern stack that includes React, TypeScript, FastAPI, and GraphQL. We are looking for someone excited by clean code, thoughtful design, and a strong sense of ownership in building product-focused software.

This is a hybrid position based in San Mateo, CA, with an expectation of working from the office 2 days per week.

What you’ll do

Backend (Python + FastAPI)

• Design and implement GraphQL and RESTful APIs using FastAPI and Strawberry GraphQL.

• Build and maintain backend services to support UI features, authentication flows, and patient/provider workflows.

• Model data with SQLAlchemy and manage schema changes with Alembic.

• Integrate with third-party APIs (e.g., HealthGorilla, Salesforce, PVerify, Google APIs, Slack).

• Write unit and integration tests using Pytest and testcontainers.

• Maintain API security, access control, and logging practices.

• Event driven architecture, CQRS design patterns, HAPI FHIR Server, Full Text/Fuzzy Search & Semantic Search.

Frontend (React + TypeScript)

• Build and maintain features in a React + TypeScript codebase using functional components and hooks.

• Implement responsive UI components using Material UI (MUI) and Emotion for styling.

• Manage client-side state using Redux Toolkit, Formik, and Yup.

• Integrate with backend services via GraphQL (Apollo Client) and REST APIs (Axios).

• Handle authentication flows with Auth0.

• Build protected and dynamic routes with react-router-dom.

• Write unit and integration tests using tools like Vitest, React Testing Library, Playwright and MSW.

• Implement features like file uploads, PDF generation (pdf-lib), digital signature capture, and custom surveys.

• Use LaunchDarkly for feature flagging and Vite for builds and local dev.

Your experience and qualifications

• Bachelor’s degree in Computer Science or related field (advanced degree preferred).

• 5+ years of experience in full stack or frontend/backend development roles.

• Proficient in React and TypeScript.

• Experience integrating GraphQL and REST APIs.

• Familiarity with backend frameworks such as FastAPI or similar.

• Knowledge of relational databases (PostgreSQL, MySQL) and ORMs like SQLAlchemy.

• Comfortable with git, monorepos, and Yarn or similar package managers.

• Testing experience on both frontend (Vitest, Testing Library) and backend (Pytest).

• Experience working in Agile teams using Jira and Scrum ceremonies.

Preferred Qualifications

• Experience with Strawberry GraphQL or Apollo Server, HAPI FHIR.

• Familiarity with Auth0 and OAuth-based authentication.

• Experience with document generation or PDF handling (e.g., pdf-lib, fpdf2, survey.js).

• Exposure to Slack bots, email validation, or healthcare-specific data models (FHIR, HL7).

• Experience with semantic search (e.g. typesense).

• Knowledge of building secure systems adhering to law governance standards like HIPPA.

Tech Stack You’ll Work With

Frontend:

• React 18+, TypeScript, Redux Toolkit, Apollo Client, Formik, Yup, MUI, Emotion, Axios, Vite, MSW, Testing Library, Vitest, pdf-lib, LaunchDarkly

Backend:

• Python 3.11+, FastAPI, Strawberry GraphQL, SQLAlchemy, Alembic, Pydantic v2, Pytest, Auth0, Redis, PostgreSQL, MySQL, Typer, HAPI, Typesense

Dev & Infra:

• Docker, GitHub Actions, Poetry, testcontainers, Jira, Scrum

Who You Are

• Curious and eager to learn— especially from principal engineers.
• Thoughtful about UX and backend reliability.
• A proactive communicator and collaborator.
• Excited by healthcare complexity and impact.
• Comfortable asking for help and giving/receiving feedback.

Additional Information

• The hiring process for this role may consist of applying, followed by a phone screen, online assessment(s), interview(s), an offer, and background/reference checks.

• Background Screening: A background check, which may include a drug test or other health screenings depending on the role, will be required prior to employment.

• Job Description Scope: This job description is not exhaustive and may include additional activities, duties, and responsibilities not listed herein.

• Vaccination Requirement: Employees in patient, client, or customer-facing roles must be vaccinated against influenza. Requests for religious or medical accommodations will be considered but may not always be approved.

• Employment Eligibility: Compliance with federal law requires identity and work eligibility verification using E-Verify upon hire.

• Equal Opportunity Employer: At Vynca Inc., we embrace diversity and are committed to fostering an inclusive workplace. We value all applicants regardless of race, color, religion, age, national origin, ancestry, ethnicity, gender, gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, or membership in any other protected group under federal, state, or local law.

• Environmental Conditions and Physical Requirements: Works with Vynca patients/clients remotely and/or in-person. Successfully performs the essential duties and responsibilities of the position through the use of physical activities as described below:

  • Regularly requires sitting, standing, walking, talking, use of hands, listening, and observing.

  • Regularly requires working at a computer for an entire shift (with appropriate breaks).

  • Regularly requires use of laptop and video-conferencing technology.

  • Occasionally requires reaching, stooping, bending, kneeling, and lifting items weighing 25 pounds or less.

  • Occasional travel may be required to perform job duties, attend training, or company events.