John Elvin Endrenal / Software developer

Beyond the Universe.
Beyond the Known.

Building scalable products with code. Turning ideas into solutions that make an impact.

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Always exploring / Orbit in motion

01 / Selected work

From an idea
to something real.

Different problems. Same curiosity.

01 / Backend AI Engineer2026

Embeddable Widget Lead Capture Platform

A multi-tenant lead-capture platform built with FastAPI that lets businesses create customizable forms and embed them on any website with a single JavaScript snippet. Features secure lead collection, spam protection, rate limiting, IP geolocation, tenant isolation, and submission analytics.

FastAPIPythonSQLiteJavaScriptSwagger UI

GitHub ↗

Flyrank AI

02 / Full Stack & AI2026

BIN

AI-powered civic tech platform designed for automated waste sorting, collection tracking, and community sustainability with low-latency classification pipelines.

FastAPIPythonFlutterSupabaseComputer Vision

GitHub ↗

EXP21NCE YSES Hackfest — Finalist

03 / IoT & AI2026

S.M.A.R.T

IoT and software platform delivering real-time environmental telemetry, simulation, and predictive harvest analytics for modern precision agriculture.

IoT TelemetryUnitySupabaseC#Predictive Analytics

GitHub ↗Watch demo ↗

The Innovation Lab Hackathon — Finalist

04 / Web2025

ONE Proposal

Enterprise proposal and document lifecycle management platform built for institutional organization workflows and role-based permissions.

BlazorC#.NETMySQL

GitHub ↗Live site ↗

STI College — Academic Project

01 / 04

02 / The person behind the code

A builder.
Always learning.

I’m John Elvin Endrenal, a computer science student and software developer from San Pablo City, Laguna. I work across backend systems, AI, and the web.

I recently completed my backend AI engineering internship at Flyrank AI. I’m now the Backend Officer at Astra Developers, a Batangas State University organization, continuing to explore the systems that make useful software possible.

John Elvin EndrenalSan Pablo City, Philippines

↗

languages & core

Python · TypeScript · JavaScript · C# · C · Java · SQL · HTML5/CSS3

ai & machine learning

RAG Pipelines · Hugging Face · Scikit-Learn · Kaggle · LLM Workflows · LangChain · Prompt Engineering

software & web

React · Next.js · Node.js · Express.js · FastAPI · Tailwind CSS · Blazor · REST APIs

databases & cloud

MySQL · Supabase · PostgreSQL · Firebase · MongoDB · Docker

developer tooling

Git · GitHub · Linux · VS Code · JetBrains · Figma · Postman

03 / The journey so far

Learning. Building.
Moving forward.

Career / Education

Career03 roles

01
APR — MAY 2025
Frontline Business Solutions, Inc.
Web Developer Intern
80-hour academic work immersion in web development and design.
02
JUL — SEP 2026
FlyRank AI
Backend AI Engineer
Backend AI Engineering intern building APIs and AI systems.
03
2026
Freelance & Tutoring Services
I tutor Math and Computer Science and build software as a freelance developer.

Education03 schools

01
2023 — 2025
STI College San Pablo
SHS, IT in Mobile App & Web Development
02
2025 — 2026
Pamantasan ng Lungsod ng San Pablo
BS Computer Engineering
Shifted to Computer Science.
03
2026 — PRESENT
Batangas State University
BS Computer Science

04 / Recognition

Small milestones.

Certifications & awards

Building APIs in PythonDataCamp+

Professional certification covering REST API architecture, request routing, validation, and database operations in Python.

AI Fluency for BuildersAnthropic+

Applied LLM engineering, prompt frameworks, structured outputs, and automated pipeline integration.

AI Essentials: Theory & PracticeUP Open University+

Theoretical foundations and applied practices in artificial intelligence, neural architectures, and ethical AI.

05 / Open a channel

Let’s talk.↗

A project, an opportunity, or a good conversation. My inbox is open.

jeendrenal.dev@gmail.com

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Good things start with a signal.

Beyond the Universe.Beyond the Known.

Embeddable Widget Lead Capture Platform↗

BIN↗

S.M.A.R.T↗

ONE Proposal↗

A builder.Always learning.

languages & core

ai & machine learning

software & web

databases & cloud

developer tooling

Career03 roles

Frontline Business Solutions, Inc.

FlyRank AI

Freelance & Tutoring Services