Isaac Marvin Sy

Bachelor of Science in Computer Science

2011 - 2015

Ateneo de Manila University

Experienced core computer science concepts including software development, algorithms, system design, databases, and web/mobile application development.

Relevant Courses:

• Data Structure & Algorithms
• Software Engineering
• Database Systems
• Operating Systems
• Computer Networks
• Artificial Intelligence
• Web Development
• Discrete Mathematics
• Probability & Statistics

English

Fluent

Filipino

Native

Backend Engineer

11/2024 - 02/2026

Covertly.AI

Designed and developed a privacy-focused AI chat platform integrating multiple LLM APIs with scalable backend architecture and secure, high-performance cloud deployment.

• Architected and developed a privacy-first AI chat platform integrating multiple LLM APIs, ensuring secure, low-latency communication across distributed services.
• Designed backend systems using NestJS to handle high-throughput AI requests with robust error handling, rate limiting, and fallback strategies.
• Implemented zero-logging and anonymization mechanisms to enforce strict user privacy and data protection standards.
• Built scalable API layers to support dynamic model switching and multi-provider AI orchestration.
• Collaborated with frontend developers using Next.js, defining clean API contracts and optimizing real-time chat interactions.
• Deployed and maintained cloud infrastructure on Microsoft Azure, ensuring high availability and performance optimization.

Backend Developer

03/2021 - 08/2024

Wantable

Built AI-driven personalization and matching systems to enhance user recommendations and improve engagement through data-based scoring models.

• Developed intelligent matching algorithms to personalize user experiences based on behavioral data, preferences, and interaction history.
• Designed backend services to process and score user inputs, improving recommendation accuracy and engagement metrics.
• Built scalable APIs to support dynamic personalization workflows and real-time recommendation updates.
• Optimized data pipelines for efficient handling of large datasets, enabling faster and more accurate AI-driven decisions.
• Collaborated with cross-functional teams to integrate AI models into production systems and improve user retention strategies.

Full Stack Developer

04/2018 - 02/2021

TrendingCustom

Developed full-stack MERN applications with scalable APIs, dynamic product customization features, and optimized database performance.

• Led backend development using the MERN stack, building scalable RESTful APIs and modular service architecture.
• Developed dynamic product customization workflows, enabling flexible configuration and real-time updates.
• Optimized database performance (MongoDB) through indexing, aggregation pipelines, and query tuning.
• Integrated third-party services such as payment gateways and order management systems.
• Worked closely with frontend developers to ensure seamless UI/UX and efficient state synchronization.

Data Engineer

03/2017 - 02/2018

3CG CAMEL LLC

Engineered data scraping and analytics pipelines to collect, process, and analyze large-scale pricing data for real-time tracking and insights.

• Designed and maintained large-scale web scraping systems to collect and monitor product pricing and historical data.
• Built data processing pipelines for cleaning, normalizing, and analyzing high-volume datasets.
• Developed backend services to support real-time price tracking, alerts, and trend analysis.
• Implemented scheduling and automation for continuous data updates and system reliability.
• Collaborated with frontend and backend teams to deliver data-driven features and improve platform performance.

Full Stack Developer

11/2015 - 03/2017

Freelancer

Delivered end-to-end full-stack web applications across multiple technologies, handling backend, frontend, and deployment for international clients.

• Delivered full-stack web applications for global clients using MERN stack, PHP, and Django, adapting to diverse business requirements.
• Built scalable backend systems with Node.js, Laravel, and Django, integrating third-party services such as payments.
• Designed responsive frontend interfaces with React.js, ensuring smooth user experience across devices and browsers.
• Managed end-to-end project delivery, including architecture design, database management, deployment, and client communication.