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Resume

Gyedong Jeon
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Senior Software Engineer

gyedongjeon@gmail.com | linkedin.com/in/gyedongjeon

Visa Status: German Residence Permit (Aufenthaltstitel) (Full Work Authorization)

Professional Summary
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Senior Software Engineer with over 10 years of expertise in designing and scaling robust backend systems. As a specialist in Python (Django, DRF), I have a proven track record of solving complex domain challenges—ranging from geospatial data processing for autonomous robot fleet management to high-availability order and settlement systems for large-scale SaaS platforms. Proficient in managing containerized environments on AWS, I am a strong advocate for Test-Driven Development (TDD) and committed to fostering engineering excellence through mentoring and establishing robust development cultures.

Technical Skills
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  • Languages: Python, Java, JavaScript, C, Swift, HTML/CSS
  • Backend: Django (DRF), NestJS, Spring Boot, FastAPI, Flask, NodeJS
  • Database: PostgreSQL (PostGIS), MySQL, MongoDB, InfluxDB, Redis
  • Cloud & Infrastructure: AWS (ECS/Fargate, RDS, S3), Docker, RabbitMQ, Git, Jira
  • Specialized: Geospatial Data Processing, TDD & Agile Methodologies

Professional Experience
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123 Factory GmbH | Software Engineer
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Berlin, Germany | Apr 2026 – Present

  • Operational Process Automation:
    • Standardize and optimize unstructured startup workflows by implementing automated pipelines using n8n and AI agents to eliminate manual tasks and improve efficiency.
  • Web & Portal Development:
    • Develop and maintain company websites and web applications.
    • Designed the initial system architecture and platform blueprint for the bilingual Tax Advisory Portal (currently under development).
  • Stack: Python, Django, n8n, AI Agents, HTML/CSS, JavaScript

Neubility, Inc. | Platform Team Lead (Promoted Jan 2025)
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Seoul, Korea | Aug 2023 – Apr 2026

Scale: Operated a fleet of 100+ autonomous robots for delivery and patrol services; launched Korea’s first large-scale urban robot delivery service in partnership with Yogiyo.

  • Engineering Leadership & Team Stabilization:

    • Successfully led and stabilized the Platform Team during a company-wide restructuring and organizational reorganization, ensuring the consistent delivery of the Q1 2025 roadmap and Lotte Innovate (LIT) requirements.
    • Led and conducted in-house technical sessions on Grafana, API Design, and Python for GenAI, while facilitating a collaborative session on Basic Networking led by a team expert to bridge knowledge gaps.
    • Implemented a “Developer Health Check” system to monitor team well-being and optimize workload distribution.
    • Proposed and implemented an official request channel using Slack Workflows, centralizing and managing over 200+ task requests for improved visibility and process efficiency.

  • Global Path Planning & Performance Optimization:

    • Architected and transitioned the global path planning system from a file-based to a database-driven (PostGIS) architecture, achieving a 15x performance improvement (reducing response time from 3.0s to 0.1~0.2s).
    • Optimized AWS ECS deployment workflows by implementing base Docker images, reducing build and deployment times by 15–20%.

  • Operational Efficiency & Infrastructure:

    • Introduced Django Admin as a core back-office tool, empowering non-engineering teams to handle routine operational tasks and reducing the maintenance load on developers.
    • Prolific technical contributor with 100+ key technical documents on Confluence, focusing on standardizing the engineering lifecycle.

  • Multi-Domain System Integration:

    • Integrated complex TCP-based TKE and Hyundai elevator systems with robot navigation, enabling the first “door-to-door” delivery service in high-rise residential complexes.

  • Stack: Python, Django (DRF), PostgreSQL (PostGIS), RabbitMQ, Redis, AWS (ECS/Fargate), Docker, Git, Jira

Kids Note, Inc. | Backend Developer
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Seongnam, Korea | May 2022 – July 2023

Scale: Market-leading B2B2C SaaS platform serving 20,000+ preschools with 1 million+ DAU (Daily Active Users).

  • High-Traffic Systems: Designed and deployed core RESTful APIs for the order and settlement systems, ensuring transaction integrity and performance for a massive user base.
  • Engineering Initiative: Initiated and led in-house TDD (Test-Driven Development) seminars to enhance code quality and establish a robust testing culture within the engineering team.
  • Tech Stack: Python, Django (DRF), MySQL, RabbitMQ, Redis, Git, Jira

AIDKOREA Corp. | Backend Developer
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Seoul, Korea | Apr 2021 – May 2022

  • Livestock Management System: Developed robust REST APIs using a hybrid stack of Django and NestJS to manage large-scale livestock data.
  • AI Model Serving: Implemented AI inference model serving using Flask, bridging the gap between data science models and production environments.
  • Stack: Python, Django (DRF), Javascript, NestJS, Flask, RabbitMQ, InfluxDB, Kubernetes, AWS, Git

Boreumdal Lab. | Software Engineer
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Seoul, Korea | Jan 2016 – Dec 2020

  • 1 Million+ Downloads: Developed and launched successful foreign language learning apps for both Android and iOS, reaching a significant global user base.
  • Content Management System (CMS): Designed and implemented CMS APIs using a mix of NodeJS and Django to handle educational content.
  • Stack: Java, Python, Javascript, NodeJS, Django, MySQL, Swift, Android, iOS, AWS, GCP, Git

Certifications
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  • AWS Certified Cloud Practitioner | Amazon Web Services
  • Goethe-Zertifikat A2 | Goethe-Institut

Education
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  • Korea National Open University | B.S. in Computer Science
    • Aug 2024 | GPA: 4.0 / 4.5
  • Sungkonghoe University | B.A. in Economics and Sociology
    • Feb 2009 | GPA: 4.46 / 4.5
  • Seoul National University | B.S. in Industrial Engineering (Unfinished)
    • Aug 2007 | GPA: 3.42 / 4.3

Languages
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  • Korean: Native
  • English: Professional Working Proficiency
  • German: A2 (Goethe-Zertifikat)