Gizelle Peras
Open to work

Senior Backend
Engineer

🌐 gizelle.dev  ·  💼 linkedin.com/in/gizelle-peras  ·  ⌥ github.com/zzzelle

6 years in Python software engineering — APIs, knowledge graphs, and real-time trading systems. 3 years prior in telecom R&D at Nokia. Based in Cebu, Philippines.

Years of Experience
10
Professional software engineering since 2014
Python Specialization
6 yrs
High-performance APIs, graphs, trading systems
API Latency Cut
60%
Via Redis caching & Celery at OrbitHoldings
Knowledge Graph Clients
5
Samsung, KB Card & Shinhan Card among them
Skills
Primary Languages
PythonShell Scripting
Frameworks
DjangoDRFFlaskFastAPI
Databases
PostgreSQLMongoDBRedisNeo4j
Tools & Secondary
DockerLinuxGitClaude CodeCeleryJavaScriptC/C++Ruby on Rails
A Brief History
Philippines South Korea
2014 · Manila Nokia · R&D Engineer 2018 · Cebu Dynameyes · SWE 2019 · Seoul DFRC · SWE → Backend Lead 2022 · Seoul MOS · Knowledge Graphs 2023 · Seoul OrbitHoldings · Sr. SWE 2024 · Seoul Outlier · AI Trainer Freelance 2025 · Cebu AfterQuery · SWE Freelance
Featured Project

A household app I designed and built end-to-end.

Homely helps families stay on the same page: tasks, shopping, pets, events, chat, and budgeting, all in one place, simple enough for kids and grandparents alike. Solo-built across the stack: a Django REST API, a React Native (Expo) mobile app, and a React web client.

Django DRF PostgreSQL React Native Expo React
Visit homely.haus →
Homely app Overview screen showing today's tasks, the before-you-leave checklist, and pets due for feeding
Projects
2026
Jun 2026 – Present
Cebu, Philippines
Homely (homely.haus)
Personal Project (In Development)
  • Solo-built a full-stack home management app with a Django backend, React web client, and React Native mobile app, using Vercel, Render, Expo, and Supabase for deployment.
  • Designed system architecture, data models, and API contracts powering both web and mobile clients.
  • Released Android preview to early testers; iOS coming next. Landing page at homely.haus.
Freelance & Independent Work
2025
Sept 2025 – Mar 2026
Cebu, Philippines
AfterQuery — AI Research Lab
Software Engineer
  • Authored 50+ multi-step agentic developer workflows (Bash, Linux, Docker) to stress-test and benchmark AI coding models in realistic terminal environments.
2024
Oct 2024 – Present
Seoul, South Korea
Outlier — powered by Scale AI
AI Trainer
  • Contributed to LLM training data pipelines by engineering Python-based datasets and adversarial prompts targeting code generation, tool use, and API reasoning capabilities.
Work History
2023
Aug 2023 – Aug 2024
Seoul, South Korea
OrbitHoldings Co., Ltd.
Senior Software Engineer
  • Led backend development of a community crypto arbitrage trading platform using Python/Django, from inception to deployment.
  • Architected a high-availability platform handling thousands of concurrent API calls using Postgres and MongoDB.
  • Integrated WebSockets for real-time data streaming using Redis.
  • Reduced API response time by 60% through Redis caching, Redis Queue, and Celery task scheduling.
2022
Jan 2022 – Jul 2023
Seoul, South Korea
MOS (주) 엠오에스에이
Senior Software Engineer
  • Developed custom knowledge graph builders for 5 key clients (Samsung, KB Card, Shinhan Card), leveraging Neo4j to structure complex data.
  • Managed the full development lifecycle including planning, graph database development, and deployment to client production sites.
  • Took ownership of legacy Korean NLP software, ensuring business continuity.
2019
Apr 2019 – Jan 2022
Seoul, South Korea
DFRC Group
Deputy Backend Lead / Software Engineer
  • Spearheaded end-to-end development: sensor integration, core Python software, and Django APIs consumed by the frontend.
  • Designed system architecture with the CTO; led a 4-person backend team managing work plans, task delegation, and code reviews.
  • Owned full deployment lifecycle to both cloud and on-premise client servers.
  • Contributed to AngularJS frontend and streamlined project management with issue tracking and communication processes.
2018
Mar 2018 – Feb 2019
Cebu, Philippines
Dynameyes, Inc.
Software Engineer
  • Implemented RESTful APIs for FinTech AML compliance solutions using Python/Django/DRF with MongoDB.
  • Built multiple Slack bots with Flask (automated standup reports), reducing administrative overhead.
  • Maintained and enhanced an integrated Workplace bot using Ruby on Rails.
2014
Jul 2014 – Aug 2017
Manila, Philippines
Nokia Networks
R&D Engineer
  • Led delivery of C/C++ features for DoCoMo across the TDD LTE/3G product line, owning the full cycle from spec review to unit testing.
  • Drove defect reduction by identifying root causes in production across a large-scale telecom codebase.
Education
University of the Philippines Cebu
Bachelor of Science in Computer Science
2010 – 2014
University of the Philippines High School Cebu
Secondary Education
2006 – 2010
A Bit About Me
Interests
☕ Coffee
🐱 Cats
♟ Chess
📷 Camera
Currently Playing
🌾 Stardew Valley
🎯 Valorant
Based in
Cebu, Philippines

Open to
Remote opportunities
Get In Touch

Have a role, a project, or just want to say hi? Send a message and I'll get back to you.

gizelle@portfolio ~
gizelle@portfolio:~$