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Jerson Pabillo
🇵🇭Philippines (UTC+08:00)
Created AtUpstaffer since September, 2026
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Jerson Pabillo — Senior Full-Stack Engineer and Agentic AI specialist

Expertise in Full Stack Web (9.5 yr.), AI and Machine Learning (4.5 yr.).

 Last verified on September, 2026

AI Tools & Assistants

Claude
Claude
2 yr.
Cursor
2 yr.

Bio Summary

  • Senior Full-Stack Engineer with 10+ years designing scalable SaaS platforms and agentic AI systems using Python, TypeScript, Node.js, and React.
  • Expert in building tool-calling agents, RAG pipelines, and multi-step autonomous workflows leveraging LangChain, OpenAI, Claude APIs, and vector search.
  • Proven track record in architecting robust backend services with FastAPI, PostgreSQL, MongoDB, and Docker, optimizing document processing time by over 50%.

Technical Skills

Programming Languages C#, Java, JavaScript, PHP, Python, TypeScript
JavaScript Frameworks AngularJS, jQuery, Next.js, Node.js, React, Vue.js
AI & Machine Learning Claude, LangChain, n8n, OpenAI
Python Frameworks Django, FastAPI, Flask
PHP Frameworks Laravel
.NET Platform .NET
Python Libraries and Tools pytest
Java Frameworks Spring Boot
Databases & Management Systems / ORM MongoDB, MySQL, PostgreSQL, Redis, SQL
UI Frameworks, Libraries, and Browsers Bootstrap, CSS, HTML, jQuery, Tailwind CSS
Cloud Platforms, Services & Computing AWS
Third Party Tools / IDEs / SDK / Services Cursor
Virtualization, Containers and Orchestration Docker
SDK / API and Integrations FastAPI, GraphQL, RESTful API
Version Control Github Actions
Operating Systems Linux
Web/App Servers, Middleware Nginx
QA, Test Automation, Security pytest
Platforms WordPress
Other Technical Skills Agentic AI, Claude Code, LangSmith

Work Experience

Agentic AI / LLM Engineer & Full-Stack Developer - Azeus Systems (Agentic AI and LLM powered SaaS products for corporate governance and enterprise knowledge search)

Duration: May 2024 – Apr 2026

Summary:

  • Developed advanced agentic AI and large language model powered SaaS platforms focused on corporate governance, board meetings, document processing, and enterprise knowledge search
  • These products automate complex workflows and improve enterprise document handling and knowledge retrieval

Responsibilities:

  • Architected tool-calling agents for autonomous multi-step governance workflows across document-heavy enterprise processes.
  • Built agent orchestration logic to plan, route, and recover from failed tool calls, enhancing task completion reliability.
  • Designed and implemented RAG pipelines with embeddings, vector search, and retrieval filtering including source previewing.
  • Created over forty production API endpoints handling data ingestion, metadata indexing, access control, logging, and asynchronous jobs.
  • Established an LLM evaluation harness with curated datasets and prompt libraries to measure output accuracy and hallucination rates.
  • Engineered production safeguards such as retry strategies, response validation, streaming output, and graceful fallbacks.
  • Reduced average document processing time from nine to under four minutes through batching, caching, and task coordination.
  • Developed reviewer-facing UIs in React and TypeScript for confidence scoring, workflow assignment, document previewing, and agent configuration.
  • Modularized legacy services into decoupled domain services for stable delivery of new AI capabilities.
  • Drove rapid delivery using Claude Code and Cursor while managing architecture, deployment, and system decisions.

Technologies: Python, FastAPI, Node.js, TypeScript, React, PostgreSQL, MongoDB, Redis, LangChain, OpenAI API, Claude, vector databases, Docker, AWS, GitHub Actions, GraphQL

Backend Developer & LLM Engineer - Accenture (Cloud-native backend services and AI automation tools for digital transformation)

Duration: Feb 2022 – Apr 2024

Summary:

  • Delivered cloud-native backend services and early AI automation tools supporting digital transformation and application modernization programs for enterprise clients
  • Focused on workflow automation, AI-driven business platforms, and integration of LLM capabilities

Responsibilities:

  • Developed backend services in Python and Node.js for enterprise modernization programs involving workflow automation and AI business platforms.
  • Built REST APIs for ingestion of customer records, workflow events, document payloads, and integration data.
  • Delivered proof-of-concept LLM automation for document Q&A, email summarization, content categorization, and knowledge retrieval.
  • Designed and optimized PostgreSQL and MySQL schemas, significantly reducing reporting query times.
  • Integrated early OpenAI API workflows with reusable prompt patterns and structured output handling.
  • Automated testing and deployment using Docker and GitHub Actions across multiple environments.
  • Collaborated with frontend engineers to define API contracts, error handling, pagination, and response formats.

Technologies: Python, Node.js, Spring Boot, TypeScript, PostgreSQL, MySQL, OpenAI API, Docker, GitHub Actions

Python Backend Engineer - CGI (Backend services and integrations for enterprise consulting and cloud migration)

Duration: Mar 2020 – Feb 2022

Summary:

  • Built backend services, APIs, and integrations to support large-scale enterprise consulting, systems integration, and cloud migration projects
  • Focused on scalable and performant backend solutions

Responsibilities:

  • Developed backend services using Python frameworks Django, Flask, and FastAPI.
  • Implemented REST APIs for user account management, reporting, notifications, file processing, and third-party integrations.
  • Optimized database queries and indexing to achieve sub-500 millisecond response times on high-traffic endpoints.
  • Collaborated with business analysts and QA teams to translate requirements into tested, production-ready functionality.

Technologies: Python, Django, Flask, FastAPI, PostgreSQL, MySQL, Redis, REST APIs, Docker, Linux, Nginx, Git, Pytest

Full Stack Developer - Shore360 (Custom web applications, customer portals, CRM workflows, and business automation tools)

Duration: Sep 2014 – Jan 2019

Summary: Delivered fully integrated custom web applications and business automation tools for offshore client teams, including CRM workflows, admin portals, reporting dashboards, and customer-facing sites.

Responsibilities:

  • Developed bespoke business tools replacing spreadsheet-driven operations with searchable dashboards.
  • Designed responsive front-end interfaces and data entry forms to streamline operational workflows.
  • Integrated third-party services such as payments, email, and mapping to automate client workflows.

Technologies: PHP, Laravel, JavaScript, React, Vue.js, jQuery, MySQL, HTML, CSS, Bootstrap, REST APIs, WordPress, Git

Education

  • Bachelor of Computer Science
    Taylor’s University | Kuala Lumpur, Malaysia
    2014

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