Gabriel Santos

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Senior Full-Stack Engineer

Tasso, Inc. (Seattle, WA - Remote)

May 2023 - Jan 2026 (2 years 9 months)

Lead full-stack development using Python (FastAPI), C#, Rust, React, Node.js, and AWS to support medical device data workflows and cloud-based diagnostic systems.Designed and implemented backend services in Python (FastAPI) and C#, building data pipelines that could reliably handle sensitive diagnostic information without missing a beat.Developed secure, HIPAA-compliant REST APIs that made it easier for clinical partners to integrate remote patient data into their existing systems.Built high-throughput ingestion pipelines on AWS using Lambda, S3, DynamoDB, and EventBridge, ensuring data flowed smoothly even during peak usage.Led frontend architecture decisions, ensuring scalability, accessibility, and high-quality UI implementation.Integrat

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Full-Stack Engineer

Calendly (Atlanta, GA - Remote)

Jun 2020 - Apr 2023 (2 years 11 months)

Built high-performance scheduling systems using C#, Rust, Python, React, Node.js, and AWS, focusing on API performance and scalable microservices.Developed core scheduling APIs in C# and Rust, delivering noticeable improvements in response times and overall system responsiveness.Built automation tools with Python + FastAPI that eliminated repetitive manual tasks and saved the engineering team hundreds of hours each month.Modernized React components to streamline the front-end experience, making the product feel faster and more polished for end users.Led the migration of legacy services to AWS ECS, improving uptime and reducing infrastructure costs without skipping a beat.Created reusable microservice templates that helped standardize archit

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Full-Stack Engineer

Smartsheet (Bellevue, WA - Remote)

Jul 2018 - May 2020 (1 year 11 months)

Delivered full-stack features using C#, Node.js, Python, React, and AWS to support enterprise workflow automation.Built microservices in C# (.NET 6) and Node.js, supporting large-scale enterprise workflows that needed to run like clockwork.Developed real-time collaboration features in React + TypeScript, helping teams work together more smoothly and efficiently.Implemented event-driven architecture using Kafka and AWS services, improving system reliability during heavy load.Created analytics APIs using Python + Flask, giving internal teams faster access to insights and reporting.Collaborated with designers to refine UX flows, interaction patterns, and visual polish, contributing to a consistent design system.Improved CI/CD pipelines using G

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Full-Stack Developer

FlexMade (Sacramento, CA - Remote)

Aug 2017 - Jun 2018 (11 months)

Built enterprise applications using C#, React, Node.js, and AWS, focusing on authentication, API development, and Ul performance.Built full-stack features using C#, React, and Node.js, delivering reliable solutions for enterprise clients across multiple industries.Developed secure authentication modules using OAuth2 and JWT, ensuring smooth and safe user access.Containerized applications with Docker and deployed them to AWS ECS, improving scalability and deployment consistency.Refactored legacy .NET codebases to improve performance, maintainability, and long-term stability.Created reusable React components that sped up development and improved Ul consistency across projects.Implemented REST APIs in Node.js and integrated them with third-par

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Software Developer Intern

Tplex (Chicago, IL - Remote)

Jun 2016 - Jul 2017 (1 year 2 months)

Supported full-stack development using Python, JavaScript, Node.js, and AWS, contributing to internal tools and early product prototypes.Built internal tools using Python and JavaScript, helping teams automate everyday tasks and work more efficiently.Developed small REST APIs using Node.js and Express, gaining hands-on experience with backend fundamentals.Learned Git, Agile, and AWS deployment practices, building a strong foundation for professional engineering work.Assisted senior engineers with debugging, testing, and documentation, learning the ropes of real-world development.Created automation scripts that reduced repetitive work and improved team productivity.Participated in code reviews and absorbed best practices that shaped future d

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