David Buitrago

Senior Software Engineer | Backend Systems, Cloud & AI

Madrid, Spain gustavodavidb@gmail.com davidbuitrago.dev github.com/david-buitrago linkedin.com/in/david-buitrago

Professional Profile

Senior software engineer and hands-on technical lead with 10+ years of experience designing and delivering production platforms, APIs, cloud infrastructure and data-intensive systems. Experienced in enterprise and investment-management environments, end-to-end ownership, architecture, code quality, mentoring and translating complex business requirements into reliable software.

Professional Experience

Qualitas Funds — Spain

Tech Lead

Mar 2021 – Present

  • Own the architecture and end-to-end delivery of internal platforms supporting investment operations, onboarding, reporting and investor services.
  • Design and evolve backend services, REST APIs, data models and integrations across .NET, SQL and cloud-based environments.
  • Lead cloud infrastructure, Docker-based deployments, CI/CD workflows and technical standards for production systems.
  • Build automation and AI-enabled services using Azure OpenAI, n8n, Azure SQL, vector search and RAG for business and operational workflows.
  • Mentor developers through code reviews, architecture guidance and pragmatic engineering practices.

Syntax Informática — Spain

SharePoint Development Engineer

2019 – Mar 2021

  • Delivered enterprise platforms integrated with Microsoft 365, REST APIs and legacy systems.
  • Led technical delivery from requirements and architecture through implementation and deployment.

Intergrupo — Colombia

Software Development Engineer

Oct 2017 – Mar 2019

  • Designed and developed enterprise applications with React, .NET and SQL Server.
  • Contributed to architecture decisions, reusable components and integration-focused backend services.

Conocimiento Corporativo — Colombia

Technical Lead · Digital Transformation Consultant

Mar 2014 – Oct 2017

  • Translated business requirements into technical architectures and delivery plans for enterprise clients.
  • Led Microsoft 365 and SharePoint solutions while coordinating technical execution and stakeholder communication.

Selected Projects

Investment operations platform

Internal platform supporting investment operations, reporting and investor-facing processes. Designed across application architecture, backend services, databases, integrations, infrastructure and delivery workflows.

.NET Core · Azure SQL · REST APIs · Azure · Docker · CI/CD

ADSIS — AI-powered ad creative platform

B2B SaaS product built end to end, including architecture, ASP.NET Core backend, React/TypeScript frontend, Supabase data layer, background processing, Docker and CI/CD.

ASP.NET Core 9 · React · TypeScript · Supabase · Hangfire · Docker · GitHub Actions