Jerson Pabillo
Results-driven Full-Stack Developer with 10+ years of software engineering experience building scalable SaaS products, REST and GraphQL APIs, and responsive user interfaces.
About
Results-driven Full-Stack Developer with 10+ years of software engineering experience building scalable SaaS products, REST and GraphQL APIs, and responsive user interfaces. Proven expertise in React, Next.js, Node.js, and Python across multiple cloud platforms (AWS, Azure, GCP). Specialized in database design, API development, and agile sprint execution with demonstrated ability to deliver production systems, lead code reviews, and drive client-facing demos. Strong track record of translating complex requirements into robust full-stack solutions with exceptional attention to quality and performance.
- 10 years' experience
- Joined September 2026
Industry experience
- Software & Internet
- Financial Services
- Retail
- Professional Services
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Work experience· 4 roles
Architected and deployed full-stack SaaS modules with Next.js and Node.js, integrating REST APIs with GraphQL for real-time synchronization across 15+ client workflows. Optimized DynamoDB NoSQL schemas, implemented n8n/Zapier fintech automation connectors (reducing manual entry and cycle time), and engineered a Python-based subscription billing system for 200+ subscribers. Led code reviews and established architectural patterns for a 6-person agile team, contributed to responsive UI and agile sprint execution, and maintained 99.7% uptime via monitoring and incident response. Delivered weekly client demos that secured contract renewals worth $1.2M, and migrated 50+ TB from SQL to NoSQL with a zero-downtime sharding strategy.
Designed REST APIs and GraphQL endpoints in Node.js and Python supporting 12+ microservices at 500+ requests per second. Improved SQL query performance and database design to reduce analytics dashboard latency by 42% for 5,000+ concurrent users on Azure. Built Python-based LLM integration services for document processing and customer support workflows, and developed Python billing pipelines (invoicing, reconciliation, churn analysis) for an SaaS platform serving 800+ enterprise clients. Supported fintech integration work via secure API bridges and compliance logging on GCP, collaborated on agile planning/code reviews, and contributed frontend improvements with React/Next.js.
Developed Python microservices exposing REST APIs for a multi-tenant SaaS platform processing 2M+ transactions daily across distributed AWS infrastructure with automatic scaling. Designed NoSQL schemas and implemented Redis caching, reducing database load by 48% and achieving sub-100ms API response times. Built SQL data warehouse ETL pipelines consolidating data from 8+ sources for real-time analytics and stakeholder demos. Delivered features through agile execution with a 96% on-time completion rate across 10 consecutive sprints and implemented e-commerce payment integration with PCI compliance for $4.5M monthly transaction volume.
Education
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