Senior Full-Stack Engineer (React + Node.js)

About Mindtech

Mindtech connects you with global projects and international teams. You will work with high standards, real challenges, and room to grow. We are more than 90 professionals in Latin America and the US, building software from end to end.

Overview of the Role

We're looking for a Senior Full-Stack Engineer with deep expertise in React (Next.js) and Node.js to join our team. You'll play a critical role in building and scaling user-facing features, backend APIs, and infrastructure that power high-stakes healthcare workflows. This role combines hands-on coding, architectural design, and cross-functional collaboration with Product and Design.

Responsibilities

Architect and implement scalable front-end features using Next.js, React, Redux, and Material UI

Build and maintain RESTful APIs using Node.js and Express

Design and optimize MySQL data models and queries using Sequelize ORM

Collaborate on end-to-end feature delivery across web, mobile, and API layers

Implement UI and backend instrumentation and analytics (Mixpanel, Google Analytics)

Write and maintain comprehensive test coverage using Jest, Mocha, and Cypress

Contribute to application architecture and deployment strategy (AWS)

Support integrations with EHR systems, SSO providers, and third-party APIs

Uphold HIPAA, SOC 2, and NIST 800-53 security best practices

Participate in code reviews, write clear technical documentation, and mentor junior engineers

Minimum Qualifications

Bachelor's degree in Computer Science or related field (or equivalent work experience)

5+ years of professional experience building full-stack web applications

Strong proficiency in Node.js, JavaScript/TypeScript, HTML, and CSS/SCSS

5+ years of experience working with React and Redux

Solid experience with SQL, relational schema design, and MySQL/Sequelize

Proven experience developing and maintaining REST APIs

Familiarity with testing frameworks (Jest, Mocha, Cypress)

Preferred Qualifications

Experience with Next.js and modern SSR/SSG strategies

Prior work with Material UI or other design systems

Knowledge of Docker, CI/CD pipelines, and cloud services (AWS)

Exposure to A/B testing frameworks (Firebase, Google Analytics)

Experience with job queues, workers, or pub-sub systems (e.g., SQS, RabbitMQ)

Familiarity with serverless architectures or microservices (Lambda)

Strong understanding of data privacy, access controls, and secure coding practices