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Junwon Jung

Software Engineer

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About Me

Passionate fullstack software engineer eager to learn

Experience

Homethrive

Software Engineer

April 2020 - Present
  • Established SMS texting service in React.js, golang on backend, brought occupation of 90% of main communication medium
  • Initiated CICD integration test using customized Docker image, resulting testing upgrade from unit testing based to integration testing, enhancing code coverage by 30%
  • Built realtime service by utilizing Firebase FCM, Apple APNs removing maximum waiting time 30 seconds to none
  • Founded Makefile utilization to the team to boost development and test workflow, reducing 80% of initial startup
  • Formed end to end data migration shell script to ease debugging, decreased 80% of average total debugging time
  • Designed efficient permission route level wrapper service using golang to secure api server from external attacks, deducted security development time by 95%
  • Accelerated build time of cloud services such as AWS Lambda, IAM, S3 by 90% from manual processes by importing Terraform into team

Tata Consultancy Services

Software Engineer

EDH (Enterprise Data Hub), November 2018 - Present
  • Extracted multiple data sources using Talend, custom shell script to migrate to cloud based data warehouse, AWS Redshift, enhancing single data sourced analytics to multiple
  • Saved time of creating status reporting dashboard by 15 hours each month by creating daily reporting service using Python
  • Optimized test clusters by removing unnecessary ones from 6 to 2 cost, saving total cost of $21,600 per month
  • Developed bug alerting service using Python, which alerts into email when data extraction fails, reducing monitoring time by 80%
Channel Merchandise Platform, September 2018 - November 2018
  • Spearheaded team of 7 new grad engineers as a lead engineer, managing the team and guiding the project followed by Agile methodology. Strictly endorsed the strategy of git branching for new functionality
  • Built an ecommerce platform where users could sell and buy television channel packages from scratch using Angular.JS, Java EE, JSP, and Oracle DB
  • Founded 4 distinctive user roles, admin, operator, retailer, customer, with different permissions and UX accordingly
  • Visualized transaction history page, which showed transaction chart based on different filters

Education

University of Illinois, Urbana Champaign, IL

August 2016 - May 2018

B.S. in Computer Science and Mathematics

Major GPA: 3.34/4.00

Projects

PhiloUs

August 2020 – Current

• Established commercial website using React.js, Python Flask, PostgreSQL for business to automate user data insertion or payment from manual jobs, boosted administrative workflows by 90% of input processes
• Formed automatic applicable coupon systems from manual coupon utilization, removing manual price calculating time with having 100% accuracy
• Cooperated with UI/UX designer to understand better web flows and visual looking in perspective of client users, making huge improvements on user satisfactions
• Migrated cloud platform from Heroku to AWS with CICD config changes resulting price changes by 70% decrease, performance increased by 50%
• Led the project to separate the roles of the development process with teammate enhancing work efficiencies with same task time to be done from 6 months to 1 month
• Optimized legacy backend queries by deducting database calls, making 2 seconds query end to end time to 0.5 seconds
View Website

whoami

Jan 2019 - June 2020

• Launched Docker to match Linux as working environment, avoiding two or more operating systems conflictions
• Implemented personal library to combine two separate open sources into one
• Formed Makefile which builds Dockerfile and runs both frontend and backend services together with one command line
View Project (Private)

Coursera Machine Learning Octave Lab

March 2019 - June 2019

Understood core concepts of machine learning how it works. Octave for programming language was used.
View Project

Leetcode Problem Solving

Feb 2019 - Current

Problem solving project to make efficient, less code, and fast program for given problem. Thought and approaches toward problems are written inside of the project folder. Python and C++ mainly used.
View Project

Actor Relator

Feb 2019 - March 2019

With given name of actor or movie, this finds the actors or movies that has in a relationship starting from the keyword based on the wikipedia web scraped information. Based on the scraped data, this shows a network graph to notify users in visual way. React.js for frontend, Node.js express middleware for backend is used.
View Project

Skills

Programming languages

Frameworks

Frontend
Backend

SQL

DevOps

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