Stephanie Santos
Stephanie Santos

Senior AI & Full-Stack Software Engineer

Actively looking · Member since 1 Nov 2026
Location
Munoz, Philippines
Desired salary
Unspecified
Work preference
Remote Only / Full Time, Freelance
Experience level
Senior

About

Professional summary

I am a Senior AI and Full-Stack Software Engineer with more than 10 years of experience building scalable web applications, cloud-native services, and AI-powered products.

I specialize in modern application development with Node.js, TypeScript, Python, React, Next.js, and AWS. My work spans frontend architecture, backend APIs, databases, cloud infrastructure, and production deployment.

I have hands-on experience integrating LLM technologies including OpenAI, Claude, Gemini, LangChain, LlamaIndex, AI agents, RAG workflows, prompt engineering, and intelligent automation into business applications.

I design and develop reliable backend systems using REST APIs, GraphQL, WebSockets, microservices, PostgreSQL, Redis, and third-party integrations. I also build secure applications using JWT, OAuth 2.0, and role-based access control.

I am experienced with Docker, Kubernetes, CI/CD pipelines, GitHub Actions, and AWS services such as Lambda, EC2, S3, RDS, API Gateway, and IAM. I enjoy working with founders and engineering teams to take products from architecture through production.

I have worked across enterprise, agency, distributed, and freelance environments, contributing to platform performance, deployment reliability, technical planning, code reviews, and engineering mentorship.

Skills

39 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Application Utilities

Experience

Career history

Senior Software Engineer & AI Consultant Freelance

Built AI-powered full-stack applications combining React, Node.js and Python backends, cloud infrastructure, and LLM-based workflows. Integrated OpenAI and Claude into production systems for document processing, intelligent assistants, and business automation.

Developed scalable APIs and backend services with Node.js, Python, and FastAPI, including third-party and CRM integrations. Designed AWS architectures using Lambda, EC2, S3, RDS, API Gateway, and IAM.

Containerized services with Docker and implemented automated CI/CD pipelines using GitHub Actions. Worked directly with startup founders to move AI product concepts from architecture and development through production deployment.

Senior Software Engineer Automattic

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.

Contributed to architecture discussions and technical planning for new features. Mentored engineers through code reviews and best practices, and improved CI/CD pipelines to reduce deployment time and increase release reliability.

Full Stack Software Engineer Creative Pixel Digital Agency

Developed full-stack platform capabilities using Node.js, Go, React, and Vue.js across frontend and backend systems. Built REST APIs integrating Git providers, container registries, and external developer tools.

Designed high-concurrency backend services with PostgreSQL, Redis, and Docker. Implemented containerized environments using Docker and Kubernetes for scalable application and build execution.

Automated testing, builds, releases, and deployments through CI/CD pipelines. Optimized pipeline scheduling, caching, and execution workflows to improve performance and developer productivity.

Full Stack Web Developer Accenture

Developed enterprise full-stack applications using ASP.NET, C#, Node.js, JavaScript, Angular, and React. Designed REST APIs and integrations connecting enterprise applications with internal and third-party services.

Built reusable frontend components and responsive interfaces using Angular and React. Developed and optimized database solutions across SQL Server, MySQL, and PostgreSQL.

Contributed to application modernization initiatives involving API development, cloud migration, and deployment automation. Participated in Agile development, code reviews, testing, production support, and technical planning.

Junior Web Developer Accenture

Developed web application features using PHP, Laravel, Angular, Django, and MySQL. Implemented REST API endpoints supporting frontend and mobile application integrations.

Maintained and enhanced legacy application modules while improving code quality and reliability. Diagnosed application issues and implemented fixes across frontend, backend, and database components.

Optimized SQL queries and application logic to improve performance. Participated in testing, code reviews, deployments, production support, and requirements implementation.

Education

Learning history

Central Luzon State University

Bachelor of Science, Information Technology

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