David Sandoval
@davidsandoval
Fullstack developer at Blossom who built an instant payments platform used by 30+ financial cooperatives.
ColombiaWhat I'm looking for
At Blossom, I built an instant payments platform used by 30+ financial cooperatives and thousands of users. I integrated third-party providers to process payments and calculate transaction fees.
I also implemented payment-confirmation authentication and user notifications, and built the web admin panel in React and mobile app in React Native. I worked on the system core, database, and AWS deployments.
At Accenture, I built credit card application flows for BBVA Colombia and helped build a product for opening USD accounts in Panama. For Wompi, I modernized a legacy Ruby system processing hundreds of thousands of transactions per day.
As a freelance developer, I build custom web products, including an SMB inventory system and an online clothing store with an admin panel. I want to contribute to product teams where I can keep growing technically.
Experience
Work history, roles, and key accomplishments
Freelance Fullstack Developer
Independent
Jan 2026 - Present (9 months)
Build custom web solutions as own products, including an inventory management system for SMBs and an online clothing store with admin panel.
Senior Software Engineer
Blossom
Jan 2025 - Jan 2026 (1 year)
Built an instant payments platform for 30+ financial cooperatives, integrating third-party providers and implementing authentication and notification systems. Developed web admin panel, mobile app, and finance module with charts and statistics.
Interviewed and onboarded new hires, built credit card application flows with Web Components, modernized a legacy Ruby system, and served as technical lead on an internal back-office project.
Mid Developer
SQLSimens
Jan 2019 - Jan 2021 (2 years)
Built views, reports and email templates with Angular, developed endpoints with Node.js and Express, and automated internal processes.
Junior Developer
SENA
Jan 2019 - Dec 2019 (11 months)
Gathered requirements and designed databases for tourism-sector mobile apps, and built mobile apps with React Native, Node.js and MySQL.
Junior Developer
Soimpro
Jan 2018 - Jan 2019 (1 year)
Developed and maintained software for public utility companies.
Education
Degrees, certifications, and relevant coursework
SENA
Specialization, Mobile Application Development
Specialization in Mobile Application Development from SENA, Cali, completed in 2019.
SENA
Technologist, Information Systems Analysis and Development
2016 - 2018
Technologist in Information Systems Analysis and Development from SENA, Cali, from 2016 to 2018.
Tech stack
Software and tools used professionally
Availability
Location
ColombiaAuthorized to work in
Salary expectations
Social media
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