Stephanie Santos

Senior Full-Stack & AI Software Engineer with 10+ years of experience delivering cloud-native, AI-powered web applications using React, Next.js, TypeScript, Node.js, Python, and AWS. Specialized in building scalable backend services, modern frontend architectures, REST and GraphQL APIs, and production AI solutions powered by LLMs, OpenAI, Claude, and LangChain. Delivered software supporting 100K+ users, reduced deployment times by up to 90%, improved application performance by 45%, and lowered cloud costs through architecture optimization and automation.

Senior Software Engineer & AI Consultant - Freelance - Remote (Contract)

(2025-10 - 2026-04)

Delivered AI-powered web applications and automation solutions for international clients.

• Built scalable backend systems using Python, Node.js, and FastAPI.
• Integrated LLMs (OpenAI, Claude) into production workflows for document processing, automation, and intelligent assistants.
• Designed cloud infrastructure on AWS using Lambda, EC2, S3, RDS, API Gateway, and IAM.
• Developed REST APIs and third-party integrations including payment systems and CRM platforms.
• Containerized applications using Docker and implemented CI/CD pipelines with GitHub Actions.
• Collaborated directly with startup founders to architect scalable software solutions from concept to deployment.

Senior Software Engineer - Automattic - Remote

(2023-03 - 2025-10)

Developed scalable backend services supporting distributed applications used by global customers.

• Designed and implemented RESTful APIs using Node.js, TypeScript, PostgreSQL, and Redis.
• Improved platform performance through database optimization, caching strategies, and asynchronous processing.
• Built cloud-native services deployed with Docker, Kubernetes, and AWS infrastructure.
• Participated in architecture discussions and technical planning for new platform features.
• Mentored engineers through code reviews and engineering best practices.
• Improved CI/CD pipelines, reducing deployment time and increasing release reliability.

Full Stack Software Engineer - Creative Pixel Digital Agency - Remote

(2020-10 - 2023-01)

Developed and maintained CI/CD platform features using Go, Node.js, and Vue.js/React, improving pipeline reliability and developer productivity.

• Built and enhanced REST APIs, integrating Git providers, container registries, and external developer tools.
• Designed scalable backend services using PostgreSQL, Redis, and Docker to support high-concurrency pipeline execution.
• Implemented containerized build environments and optimized deployment workflows using Docker, Kubernetes, and cloud-native infrastructure.
• Improved pipeline scheduling, caching, and execution performance, reducing build times and increasing system scalability.
• Collaborated with distributed open-source contributors and engineering teams using Agile development practices, Git, and GitHub-based workflows.
• Automated testing, release, and deployment processes through CI/CD pipelines, ensuring reliable software delivery across multiple environments.

Full Stack Web Developer - Accenture - Taguig City, Metro Manila, Philippines

(2017-10 - 2020-05)

Developed enterprise web applications using ASP.NET, C#, Node.js, JavaScript, Angular, and React.

• Designed RESTful APIs and integrated enterprise systems with internal and third-party services.
• Worked with SQL Server, MySQL, and PostgreSQL to build scalable database solutions.
• Built responsive user interfaces and reusable frontend components.
• Participated in Agile software development, sprint planning, and peer code reviews.
• Assisted with deployment automation and application maintenance for enterprise clients.
• Contributed to modernization projects involving cloud migration and API development.

Junior Web Developer - Accenture - Taguig City, Metro Manila, Philippines

(2016-04 - 2017-09)

Developed new features for web applications using PHP, Laravel, Angular, Django, and MySQL.

• Fixed bugs and resolved issues in existing web applications.
• Implemented REST API endpoints to support frontend and mobile applications.
• Maintained legacy systems by updating existing modules and improving code quality.
• Assisted with SQL query optimization to improve application performance.
• Participated in code reviews, testing, deployment, and production support.
• Worked with senior developers to implement client requirements.

Bachelor in Computer Science - Computer Science - Central Luzon State University (2010-08 - 2014-05)