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I am a dynamic and results-driven Senior Software Engineer with 8+ years of experience designing and scaling digital health and fintech platforms. I design and implement robust microservice architectures on cloud platforms, delivering measurable business outcomes across globally distributed systems. I thrive in cross-functional teams, owning end-to-end delivery from frontend to backend, and I am passionate about building secure, scalable solutions that improve lives.…I am a dynamic and results-driven Senior Software Engineer with 8+ years of experience designing and scaling digital health and fintech platforms. I design and implement robust microservice architectures on cloud platforms, delivering measurable business outcomes across globally distributed systems. I thrive in cross-functional teams, owning end-to-end delivery from frontend to backend, and I am passionate about building secure, scalable solutions that improve lives.

Samuel Neto

Full Stack Developer, Back-End Developer, Front-End Developer, +5

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I am a dynamic and results-driven Senior Software Engineer with 8+ years of experience designing and scaling digital health and fintech platforms. I design and implement robust microservice architectures on cloud platforms, delivering measurable business outcomes across globally distributed systems. I thrive in cross-functional teams, owning end-to-end delivery from frontend to backend, and I am passionate about building secure, scalable solutions that improve lives.…I am a dynamic and results-driven Senior Software Engineer with 8+ years of experience designing and scaling digital health and fintech platforms. I design and implement robust microservice architectures on cloud platforms, delivering measurable business outcomes across globally distributed systems. I thrive in cross-functional teams, owning end-to-end delivery from frontend to backend, and I am passionate about building secure, scalable solutions that improve lives.

Available to hire

I am a dynamic and results-driven Senior Software Engineer with 8+ years of experience designing and scaling digital health and fintech platforms. I design and implement robust microservice architectures on cloud platforms, delivering measurable business outcomes across globally distributed systems.

I thrive in cross-functional teams, owning end-to-end delivery from frontend to backend, and I am passionate about building secure, scalable solutions that improve lives.

Skills

Experience Level

Expert

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Language

English

Fluent

Work Experience

Senior Software Engineer at PayPal

October 1, 2024 - Present

Led front-end across high-volume payments and merchant experiences, delivering React/TypeScript front-ends backed by Java, Go, Python, Node.js microservices. Architected modular, scalable systems with emphasis on reliability, performance, and security in a payments environment.

Senior Full Stack Developer

October 1, 2023 - September 29, 2025

Drove end-to-end delivery of patient and provider experiences using React/Next.js/TypeScript on the frontend and Go/Ruby on Rails on the backend. Scaled HIPAA-compliant platforms on AWS with modern engineering practices (DDD, microservices, IaC) to accelerate delivery and reduce risk.

Senior Full Stack Developer

July 1, 2020 - September 29, 2025

Delivered high-volume BNPL checkout and merchant tooling using Angular/TypeScript frontend backed by Java/Kotlin/Node.js services. Scaled a microservices architecture (DDD, SOLID) and built robust data pipelines and integrations; improved performance and reliability.

Senior Software Engineer at PayPal

October 1, 2024 - Present

Delivered React/TypeScript frontends backed by Java, Go, Node.js, and Python microservices; scaled globally on AWS/Kubernetes; implemented domain-driven microservices architecture; built merchant dashboards; established CI/CD with GitHub Actions; improved observability with Prometheus, Grafana, and ELK; ensured PCI-DSS controls.

Senior Software Engineer

October 1, 2024 - September 29, 2025

Remote partner with product, security, and data teams to deliver high-availability care-delivery and provider-matching features across a React/TypeScript frontend and Go/Ruby on Rails backend.

Senior Software Engineer

July 1, 2020 - September 29, 2025

Delivered high-volume BNPL checkout and merchant tooling using Angular/TypeScript frontend backed by Java/Kotlin/Go/Node.js services; scaled BNPL checkout for international markets across a remote team.

Senior Software Engineer at PayPal

July 1, 2020 - September 29, 2025

Delivered high-volume buy-now-pay-later checkout and merchant tooling using an Angular/TypeScript frontend backed by Java/Kotlin/Node.js services. Scaled payments and risk workflows on AWS while instituting modern engineering practices (DDD, SOLID, microservices, IaC).

Health Senior Full Stack Developer

October 1, 2023 - September 29, 2025

Drove scalable, observable systems on AWS; implemented domain-driven microservices (Spring Boot & Python FastAPI) on AWS EKS with bounded contexts and asynchronous workflows; reduced API latency by ~35% and achieved 99.95% service uptime.

Senior Software Engineer at PayPal

October 1, 2024 - September 29, 2025

Partnered with product, security, and data teams to deliver high-availability care-delivery and provider-matching features across React/TypeScript frontend and Go/Ruby on Rails backend; scaled HIPAA-aligned platforms on AWS; observed with Prometheus/Grafana.

Senior Software Engineer at PayPal

October 1, 2024 - Present

Lead engineering across high-volume payments and merchant experience, delivering React/TypeScript frontend backed by Java, Go, Node.js, and Python microservices.

Senior Software Engineer

October 1, 2023 - October 1, 2024

Remote role partnering with product, security, and data teams to deliver high-availability care-delivery solutions. Worked with React/TypeScript front end and Go/Ruby on Rails backend APIs, deployed on AWS with microservices and strong observability. Ensured HIPAA, GDPR, PCI-DSS, and HITRUST controls; improved reliability and performance across critical care workflows.

Senior Full Stack Developer

September 20, 2017 - July 20, 2020

Remote delivery of high-volume BNPL checkout and merchant tooling using Angular/TypeScript front end with a Java/Kotlin, Python, and Node.js service stack. Built on AWS with IaC (SOLID, DDD, microservices), scaled to 20K+ daily transactions, and implemented robust security and risk controls. Delivered event-driven pipelines with Kafka/SNS/SQS and integrated CI/CD across multiple environments.

Senior Full Stack Developer at HealthTech / San Francisco

September 1, 2020 - July 1, 2023

Drove end-to-end delivery of patient and provider experiences using React/Next.js/TypeScript on the frontend and Go/Ruby on Rails on the backend. Built HIPAA-compliant platform on AWS with modern engineering practices, emphasizing resilience, security, and scalable microservices. Led cross-functional teams to deploy features with a focus on data-driven analytics and near real-time performance.

Senior Software Engineer at Tech Startups / San Francisco

September 1, 2017 - July 1, 2020

Delivered high-velocity front-end and back-end features using React/TypeScript and Node.js, with a focus on secure, scalable services. Implemented microservice architecture (Go, Python, Ruby on Rails) and containerized workloads with Kubernetes. Improved system reliability through observability and CI/CD automation; contributed to architecture and code quality improvements.