Changjoo Jeon
cjjeon89@gmail.com
https://www.linkedin.com/in/cj-jeon
(604) 600 - 8166
cjjeon.com
Experienced lead software developer with a proven track record of building scalable SaaS products and features, optimizing API speeds, and implementing real-time collaborative services, seeking to leverage expertise in full-stack development and technical architecture at FOSSA as a Software Engineer.
EXPERIENCES
Superpanel
February 2022 - Present
Lead Software Developer
Vancouver, BC
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Initiated and conducted in-depth customer interviews and calls to gain a comprehensive understanding of target users' pain points, challenges, and expectations, forming the foundation for an informed product strategy.
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Successfully implemented integrations with diverse third-party systems, including Google services, Salesforce, Zoom, Gong and more, enhancing the functionality and versatility of the backend platform.
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Successfully enhanced API speeds from an initial range of 8 to 10 seconds to consistently achieve response times of under 1 second through algorithmic optimization.
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Demonstrated ability to quickly adaptability to new technology by building with new technology like Electron and Chrome Extensions.
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Leveraged a Large Language Model AI (ChatGPT) to efficiently summarize call recordings and categorize unstructured data sets, resulting in enhanced data organization and improved insights extraction.
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Created a Node.js TypeScript server with WebSocket to establish and manage a real-time collaborative note service, enabling seamless live collaboration and synchronized editing among multiple users.
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Designed and implemented a reporting feature, creating a user-friendly table view interface that streamlined data analysis and reporting processes for improved decision-making efficiency.
Commit / Lucid HR
August 2021 - April 2022
Engineering Partner (Contract)
Vancouver, BC
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Transformed a Figma design into a functional Applicant Tracking System (ATS) prototype using a tech stack, including Next.js, React, and Node.js with TypeScript.
Clir Renewables
January 2017 - August 2021
Lead Software Developer
Vancouver, BC
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Led the creation of a React-based data portal, enabling team members to quickly update and access internal information, streamlining communication and decision-making.
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Led a dynamic Onboarding and Platform team, overseeing end-to-end software discovery, development, and delivery processes while fostering a collaborative and innovative work environment.
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Mentored and coached a diverse group of junior and intermediate developers, providing technical guidance, conducting code reviews, and fostering professional growth through targeted skill development plans.
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Designed and architected a robust ETL data pipeline leveraging Apache Airflow to seamlessly extract, transform, and load wind turbine data from substation networks through a secure VPN connection. The system were capable to handle approximately 50GB of data daily.
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Engineered a suite of internal tools utilizing Python and React, enabling customer-facing teams to swiftly address client requests, debug issues, and generate visual charts in a streamlined manner.
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Developed a robust onboarding automation tool using Golang and Python, drastically reducing onboarding time by automatically validating onboarding sheets and datasets.
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Successfully met a challenging 2-week deadline to fulfill a critical client demand of process petabytes of data by orchestrating a cluster of 200 servers, demonstrating exceptional time management and organizational skills.
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Founding member of the rapid growing company who wrote first line of code.
EPIC Semiconductors
May 2015 - May 2016
Hardware & Software Engineer
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Developed a C# server with a Windows GUI to establish seamless communication with IoT devices through websockets, enhancing real-time data exchange and fostering efficient IoT device management.
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Created an Android app for remote control of LED lights and IoT prototypes, featuring a user-friendly interface for seamless smart device management, fostering enhanced user experience and convenience.
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Build a prototype for a smartwatch with hand gesture detection capabilities. This involves designing the hardware, programming the microcontroller using C, designing and assembling the PCB, and building a 3D model using a 3D printer.
EDUCATIONS
The University of British Columbia
December 2015
Bachelor's Degree - Electrical Engineering
SKILLS
Tools & Technologies
Git, Circle CI, Docker, AWS Platforms (EC2, ECS)
Databases
MySQL, PostgreSQL, Firebase, Amazon Redshift, DynamoDB, Redis
Frameworks & Libraries
Django, React, ChatGPT, Next.js, Vue, Flask, FastAPI, Pandas
Programming Language
Python, Typescript, Javascript, C#, C