David Gabriel Millares Bellido
New York City, NY
Software Engineer and Financial Economist with a passion for navigating financial markets and complex problem solving. Experienced in full-stack development with modern technologies, leveraging AI to its fullest capabilities. Strong background in distributed systems, data analysis, and system design. Passionate for the intersection between quantitative finance and software engineering
Education
B.A. in Computer Science (Software systems)
Columbia University • New York, NY
GPA: 3.93
Relevant Coursework: Data Structures and Algorithms•Linear Algebra•Artificial Intelligence•Cybersecurity•Computer Graphics•Operating Systems•Computer Networks•Databases
B.A. in Financial Economics
Columbia University • New York, NY
GPA: 3.93
Relevant Coursework: International Trade•International Monetary Policy•Advanced Econometrics•Game Theory•Corporate Finance•Financial Accounting•Industrial Organization•Micro/Macro Economics
Awards
Amazon IN Ads Hackathon Winner — September 2024
Designed and implemented an AI chatbot pipeline to extract context from team codebases and documentation before the widespread distribution of tools like ClaudeCode/Copilot.
Dean's List 8x — Columbia University, 2019-2024
Recognized for academic excellence and consistent high performance throughout the complete eight semesters of my undergraduate program.
Recent Experience
Software Development Engineer
August 2024 - PresentAmazon Inc. • New York, NY
- Designed scalable latency sensitive distributed systems for Amazon Security (physical)
- Developed ETL jobs, APIs, and data pipelines in a greenfield project, taking highly ambiguopus projects from inception to production
- Performed tangible improvements to user experience on Amazon's Advertising platform, impacting millions of users and generating a significant increases in revenue
- Maintained and improved existing services, leveraging state of the art AI tools to optimize code quality and operations
Introduction to Econometrics Teaching Assistant
January - May 2024Columbia University • New York, NY
- Led instruction for a group of ~20 students, covering core econometrics concepts and introductory R programming
- Developed R examples based on coursework and supported students in producing clean and efficient code for their assignments
Skills
Programming Languages — Python•Typescript•Kotlin•Java•R•C•C++
Frontend — React•Next.js•Tailwind CSS•LaTeX
Backend — MongoDB•DynamoDB•SQL•Smithy
Tools — Git•Docker•AWS•Apache Spark
Financial — Quantitative Analysis•Financial trading•Option Pricing•Prediction Markets
Languages — English (Fluent)•Spanish (Native)•Russian (Beginner)
Past Experience
Center for Advising Tutor
January - May 2024Columbia University in the City of New York • New York, NY
- Led 1:1 tutoring sessions for: Advanced Programming, Introduction to Databases, and Computer Science Theory
Software Development Engineer Intern
May - August 2023Amazon Inc. • Seattle, WA
- Worked closely with a team of ~10 engineers to design and implement a complete redesign of a powerful Amazon backend system for enhanced power and versatility
- Developed large scale ETL system that was able to process close to 200 million documents in under forty minutes
CFO Assistant Intern
May - August 2022CFO Assistant Intern • La Paz, Bolivia
- Worked closely with CFO constructing financial reports and executive financial summaries from a large set of macro-economic documents, particularly related to Gold
- Crafted presentations and documents, containing executive summaries, graphical representations, and regressions on Gold and other key macro-economic factors related to the Bolivian economy