KATXUYU Python · Backend Developer
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WFH-ready · Mid to Night Shift · Cloud-native Delivery

Gie Grajo

I’m a builder who moves between backend engines and creative labs: shipping resilient APIs, serverless systems, and data-heavy platforms by day; sketching silhouettes, editing reels, and crafting clean visuals by night. I care about reliable systems, humane interfaces, and stories that move.

Serverless & cloud-first Data-heavy & durable Rapid, reliable delivery Clean contracts & docs
Python · Django · Flask · Node/Express AWS Lambda · CDK · API Gateway · S3 · RDS · DynamoDB PostgreSQL · MySQL · Redis · DynamoDB IoT · Robotics · Data Viz · AI tooling
Email Me LinkedIn GitHub Portfolio Site

Location

Calamba City, Laguna 4027, Philippines

Contact

(+63) 927-001-6940 (Viber) · (+63) 976-058-1072

ragrajo04@gmail.com

Availability

WFH · Mid to Night Shift

Portrait of Gie Grajo
8+ Years in backend & automation
Cloud AWS · Azure · serverless
Delivery APIs · data pipelines · IoT

Throughline

Systems, signals, and style

I grew up solving puzzles, then learned to weave code, sound, and visuals into products that feel alive. I like backend engines with crisp contracts, observability that tells the truth, and interfaces that respect how people move.

Voice & Signal

AI callers, media pipes, CRM bridges

I build calm backbones for chaotic signals—queue workers that never flinch, adapters that keep calls and CRMs in sync, and logs that read like a story you can trust.

Data & Motion

IoT, analytics, visualizations

From sensor dust to dashboards, I design pipelines that stay breathable—serverless where it matters, tuned SQL where it counts, and charts that whisper the signal, not the noise.

Design & Fashion

Sketches, fabrics, edits

I sketch silhouettes with the same intent I use for APIs: clean lines, thoughtful layers, and movement-first cuts. Photo and video edits help me test how stories feel before they ship.

Projects

Project gallery with context & code

Condensed highlights from your Google project pages plus direct GitHub access. Docs stay linked for deeper dives.

Professional / Industry

Voice AI, analytics, middleware, IoT

Fluence · Multi-tenant Voice AI Platform
Led backend for outbound/inbound AI calling: APIs, media routing, queue workers, CRM/telephony adapters, observability.
voice-ai-agent ai-caller smart-pathway-builder asteeinvestimenti linkedin-api asana-mcp
Docs
DeepData · DatViz AI
AI-driven data viz platform with chat-style graph generation; Flask + parallel processing, Vue.js UI, PostgreSQL on AWS.
Live GitHub
Ikaros · Taggy Analytics Middleware
Syncs GA and event sources into BI; Segment, Customer.io, GA APIs; serverless pipeline on AWS Lambda/API GW/CDK/S3/PostgreSQL/DynamoDB.
Private
Accenture · SAP/ETL Middleware
Python middleware transforming ETL outputs into SAP formats on AWS (Lambda, S3, RDS); Flask + SQLAlchemy services for reinsurance client.
Private
Packetworx · IoT & Trendz AI
Sensor forecasting dashboards and device pipelines (ingest, payloads, monitoring, automation); multiple open-source modules.
MQTT Things API OpenFaaS Synchronizer Localization Kafka Payloads Gateways EventHub API CUPS Home-Automation Mandala-Generator
Divergt Co.
Water district mobile monitoring (Python/Flask + AI image processing) and car insurance web app with geolocation on Django/MySQL.
Private
Accenture · Automation & Monitoring (2019)
Telegram bot for VAS alerts, Nagios/EAI integrations, deployment/diagnostic tools, and ops automations.
Private
Upwork · Freelance
Home automation IoT control (Flask + PostgreSQL + MQTT), commercial air-purifying control (Vue + Python), and election survey dashboards.
Home-Automation
Virtus Solutions
WordPress + Vue/PHP extensions for interactive reports and the Virtus Solutions site for water hardware/software.
Live site

Graduate Projects

Robotics, networking, AI

PPE: Pandemic Panic Eating
P2P multiplayer pandemic sim—collect safe particles, avoid infection; Unity+C#+Photon+WebRTC, no central server.
Docs
Tetris Packing Analysis
Compares online Tetris packing algorithms (packing, scoring, modified) for space use and gameplay; ACRES 2021.
Docs
CPU Affined Threading for Matrix Distribution
Benchmarks CPU affinity in threaded matrix distribution across sockets; explains when affinity hurts IO/network workloads.
GitHub Docs
Wi-Fi Indoor Localization with ANN
ANN-based indoor localization; compares against RF/LogReg/SVC; achieves strong F1 scores on Wi-Fi signal datasets.
GitHub Docs
Swarm Robotics Message Passing & Localization
NetLogo swarm sim studying message passing, movement patterns, and localization robustness.
GitHub Docs
WebRTC Zoom Clone
Node.js signaling + WebRTC for audio/video/data channels; rooms, NAT traversal, security basics.
GitHub

Undergraduate Projects

Robotics, desktop, simulation

BS Thesis: Air Purifier UGV
UGV with purifier/humidifier; WSN-guided navigation; mobile IAQ app (Wi-Fi/GSM); Best Thesis & Rank #1 BSCS.
Docs
RAG Memoria Optimera
Disk optimizer: temp cleanup, dedupe, compression, malware scan via digests, defrag with live monitoring.
User manual
MRT-2 Queue Simulation
AnyLogic model of MRT2 queues; extra card machines + FIFO policies reduce wait times vs current process.
Docs on request
Restaurant Management System
LAN-based ordering with customer + crew terminals, live queue, receipt generation, ingredient toggles.
Docs on request
Other software builds
CCC website (PHP/CSS), Rage of the Ancient (C++), Word Collide (Java), personal/e-commerce sites, Karaoke Simulator, Hotel Reservation.
Links on request

Capability Stack

Skills that power production systems

I design for reliability first: clean contracts, observability, safe rollouts, and performance-minded data models.

Languages

Python (primary), C#, Java, JavaScript/TypeScript, C++, PHP.

Backend & APIs

Django, Flask, Node.js/Express, RESTful API design, WebSocket, serverless app patterns.

Frontend

React, Vue, Gatsby, Builder.io, Materialize, Bootstrap.

Cloud

AWS (Lambda, CDK, API Gateway, S3, RDS, DynamoDB, ECS, EC2, SQS, CodePipeline/Build, Athena, CloudWatch), Azure Functions, Blob Storage, Event Grid.

Databases

PostgreSQL, MySQL, Oracle SQL, DynamoDB, Athena; schema design, performance tuning, analytics.

DevOps & CI/CD

Git/GitLab/GitHub CI, Jenkins, Docker, Terraform, Kubernetes, AWS CodePipeline/Build, observability (CloudWatch, Prometheus/Grafana, logs/metrics/traces).

Automation & AI

Python scripting, Unix/Bash, Automation Anywhere, Blue Prism, Kestra Automation, Telegram Bots, LLM validation, scikit-learn, spaCy.

IoT & Robotics

Arduino, Raspberry Pi, MQTT, Pyro5, Photon; Thingsboard, Trendz Analytics; robotics programming.

Industries

E-commerce, insurance, reinsurance, IoT, telecom, data science, voice AI.

Trajectory

Recent work and impact

Jul 2025 – Aug 2025

Lead Backend Developer · Fluennce (Freelance)

Designed a 3-service Voice AI backend with idempotent jobs and real queueing for multi-tenant, multi-CRM use.

  • Built API/webhooks, dialer workers, Sheets enrichment, booking, follow-ups, and KPI reporting.
  • Set adapter contracts (telephony/CRM), routing by service/province, and client-specific features (payment links, IVR/DTMF bypass).
  • Established observability and reliability (structured logs/metrics/traces, Slack alerts, retries/backoff/DLQ, timeouts, circuit breakers, secure secrets/signatures).
  • Drove docs, mentoring, canary deploys, and migrations with minimal downtime.
  • Stack: Node.js (TypeScript), Python, Express, WebSocket, Redis/BullMQ, PostgreSQL, ElevenLabs, Twilio/Asterisk/SiDial, Google Sheets API, Stripe, WhatsApp/Messaging, Docker, GitHub CI, Prometheus/Grafana, Pino.

Dec 2024 – Apr 2025

Subject Matter Expert (Computer Science) · Innodata (Freelance)

Evaluated AI-generated CS responses and automated hallucination detection for enterprise LLM validation.

  • Built a Python-based validation system with a rule-augmented classifier (scikit-learn, spaCy) and heuristics.
  • Developed Flask APIs for async checks; stored evaluations and metadata in PostgreSQL.
  • Improved consistency and reduced manual review by 30% via pipeline refinement with annotation/QA teams.

Nov 2024 – Jan 2025

Full-Stack Developer · DeepData Inc. (Upwork)

Owned architecture and delivery of an AI-driven automated graph visualization chatbot.

  • Built Flask backend with parallel processing for real-time graph generation and data cleaning.
  • Shipped interactive Vue.js frontend with auto-suggested visualizations; deployed on PostgreSQL.
  • Stack: Python, Flask, Vue.js, OpenAI API, AWS EC2/RDS, PostgreSQL.

Jun 2024 – Sep 2024

Software Engineer · Ikaros (Outsourced Inc.)

Developed and optimized backend systems with analytics integrations.

  • Integrated Segment Functions, Customer.io, and Google Analytics APIs for real-time reporting and automation.
  • Led Taggy platform: synchronized GA reports to Supabase using AWS Lambda, API Gateway, CDK, S3.
  • Optimized SQL with PostgreSQL and DynamoDB; streamlined CI/CD via GitHub CI and Kestra Automation.

Jun 2022 – Mar 2024

Data Engineer / Consulting Software Engineer · Packetworx Inc.

Delivered serverless IoT data processing and dashboards.

  • Built Azure Functions and Flask APIs for ingesting and reporting IoT sensor data; Django backends on PostgreSQL/MySQL.
  • Authored C# .NET app for device monitoring and remote configuration; improved visibility for engineering.
  • Created interactive dashboards with Trendz Analytics; applied advanced data science techniques for insights.

Mar 2022 – Jun 2024

Application Development Analyst · Accenture Inc.

Built middleware and automation for financial data and reinsurance systems.

  • Developed scalable Accounting Hub middleware on AWS (Lambda, S3, RDS) for SAP-ready financial data.
  • Integrated Flask + SQLAlchemy for claims/policy management; ensured data integrity and consistency.
  • Migrated resources from AWS pipelines to DevOps, reducing downtime; used OpenAI API for automation.

Jan 2020 – Jan 2022

Co-Founder · Divergt Co.

Led full backend delivery for client apps.

  • Built REST APIs on Django/Flask with PostgreSQL/MySQL; delivered water-district monitoring and car insurance platforms.
  • Implemented geolocation services and AI/automation to modernize legacy systems; deployed on AWS.

Jan 2020 – Jan 2022

Python Developer · Upwork (Freelance)

Delivered full-stack and IoT solutions for multiple clients.

  • Built Flask APIs with PostgreSQL/MySQL; added MQTT client-server to IoT home automation.
  • Developed election survey web app with dashboards; ensured scalable data collection.

Jan 2019 – Dec 2019

Associate Software Engineer · Accenture Inc.

Automated deployment tasks and monitoring for VAS/EAI systems.

  • Developed Python automation scripts and Flask APIs; improved operational efficiency.
  • Built Telegram bot for real-time system alerts; contributed to C# .NET diagnostics tool.
  • Worked with Oracle SQL for performance-focused data operations; used Nagios/Tibco.

Jan 2018 – Feb 2019

Python Developer · Upwork (Freelance)

Integrated robotics and IoT concepts into production apps.

  • Built Vue.js frontend + Python backend for air purifying robotics platform.
  • Delivered scalable web and data communication for IoT-enabled systems.

Mar 2017 – Dec 2017

Consultant Web Developer · VRTVS Inc.

Developed Vue.js + PHP web application and integrated WordPress features.

  • Transitioned from intern to freelance lead; shipped custom report builder.
  • Supported water hardware/software solution industry with analytics.

Style Story

Fashion capsules & visual design

From code to couture: I translate systems thinking into silhouettes—structured lines, controlled palettes, and motion-ready garments.

Concept

Clean geometry, fluid drape, and tech-inspired trims. I balance sharp tailoring with translucent layers (think bubble-light sheers) to mirror my product work.

Process

Sketch → 3D mock (SketchUp/Marvelous) → fabric swatches → motion tests. I iterate like sprints: quick studies, fit checks, then refined lines.

Media

Illustration, portrait sketching, photo/video edits, and runway-ready boards. Drop your fashion boards into assets/fashion/ to showcase them here.

Visual Lab

Logos, photo edits, and motion

Select edits and reels—branding tweaks, retouching, and video stories.

Sketches

Hand-drawn studies and line work—gesture, structure, and light.

Photo & Logo Edits

Skin-tone safe retouching and logo cleanups—balanced contrast, crisp edges.

Video Reels

Quick cuts and storytelling edits—play right here.

SketchUp Scenes

Spatial studies and walkthroughs for interiors/exteriors.

View SketchUp video

Playground

Mini Games

Stack, dodge, flap, slither, and jump—pick a tab and play.

Score: 0 Ready

Tip: keep your eye on the moving block; the narrower the overlap, the harder the next drop.

Score: 0 Ready

Arrow keys to move. Eat food, avoid walls and yourself.

Score: 0 Ready

Click or space to flap. Stay between pipes.

Score: 0 Ready

Space to jump. Avoid the cacti.

Score: 0 Ready

Move with left/right or A/D. Don’t get hit by falling blocks.

Score: 0 Ready

Click the bubbles before they vanish. 30 seconds to rack up points.

Score: 0 Ready

Move with left/right or A/D. Keep the ball alive.

Score: 0 Lives: 3

Catch green blocks, avoid red. Move with left/right or A/D.

Find all pairs.

Click cards to flip. Match all pairs with the fewest tries.

Score: 0 Ready

Click the moving target before it jumps away. Time-limited frenzy.

Found: 0 Total: 0

Pandas are scattered playfully around the page. Click them all to win.

Three quick bubble modes: Pop Sprint, Precision Pop, Bubble Catch. Open and play here.

Learning

Education & Research

MS Computer Science (Ongoing)

Sep 2020 – Present · University of the Philippines Los Baños (UPLB)

Thesis: Optimizing Decentralized Swarm Robotics — Adaptive communication protocols and energy-efficient strategies for land-based autonomous systems.

BS Computer Science

Jun 2014 – Jun 2018 · City College of Calamba (CCC)

Thesis: Indoor Air Purifier and Humidifier Autonomous UGV with mobile monitoring via Tangent Bug, A*, Genetic Algorithm.

Fashion Institute of the Philippines

Certificate · Fashion Design & Construction

Focused on pattern-making, draping, and runway presentation—bridging technical product thinking with garment craft.

Academic Research

Comparative Analysis of Packing Algorithms for the Tetris Problem and Game.

Presented at ACRES 2021 (Computational Interdisciplinary Research Labs, UPLB).

Recognition

Awards & Leadership

Ranked #1 Overall

BS Computer Science, Class of 2018.

Best in Thesis

Indoor Air Purifier and Humidifier Autonomous UGV.

Talent Awardee

City College of Calamba Admirals Pep Squad (CAPS).

Multi-Service Awardee

Seven service awards across college organizations.

Leadership & Memberships

  • Rotaract Club of City College of Calamba (President 2017-2018; Member 2017-2018).
  • City College of Calamba Admirals Pep Squad (Public Relations Officer 2015-2016; Member 2014-2018).
  • Mathematically Disciplined for the Advancement of Society (Member 2014-2018).
  • Council of Student Leaders (Member 2017-2018).
  • Philippine Society of Information Technology Educators, Computer Science Society (VP Membership 2014-2015; VP External Affairs 2015-2016; Member 2014-2018).
  • Alliance of Software Guild Researchers and Developers (Member 2017-2018).

Continuous Growth

Training & Seminars

Segment 101 & 102 Training

Jun 2024 – Jul 2024 · Ikaros · Barangaroo, NSW 2000, Australia

Generative AI Bootcamp

Jan 2024 – Mar 2024 · Accenture Inc. · Quezon City, Manila 1110

Data Science Training

Apr 2022 – Jul 2022 · Accenture Inc. · Quezon City, Manila 1110

Power Center Bootcamp

Mar 2022 – Apr 2022 · Accenture Inc. · Quezon City, Manila 1110

Advanced RPA Bootcamp

Jul 2019 · Accenture Inc. · Quezon City, Manila 1110

DevOps Bootcamp

Jan 2019 – Mar 2019 · Accenture Inc. · Quezon City, Manila 1110

Reach Out

Let’s build something resilient

Email

ragrajo04@gmail.com

Phone

Reveal number · Reveal number

Links

LinkedIn · GitHub

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