JLJohn Lonetree
@johnlonetree
Backend Engineer (Ruby/Rails/AWS). Visa-ready for Korea, actively learning Korean. 4+ years scaling systems & optimizing performance. Relocating now.
United StatesWhat I'm looking for
Visa-ready Backend Engineer with 4+ years of expertise in Ruby on Rails, PostgreSQL, and AWS, actively preparing for immediate relocation to South Korea. I specialize in building scalable microservices and optimizing high-traffic systems, reducing API latency by 30% and cutting batch job runtime by 44%. I lead technical upgrades and mentor teams, with a strong focus on clean code, testing (RSpec/TDD), and cloud-native architecture.
Currently learning Korean (studying for TOPIK I) to better collaborate and contribute within Korea's innovative tech ecosystem. I'm seeking a role where I can solve impactful problems and grow with a forward-thinking team.
Experience
Work history, roles, and key accomplishments
Software Engineer
Kin Insurance
Aug 2021 - Present (4 years 4 months)
Architected and built 5+ RESTful backend services using Ruby on Rails, reducing API response times by 30% and optimized batch jobs to cut runtime by 44%, saving operational time.
Business Systems Analyst
Infosys
Jun 2021 - Jul 2021 (1 month)
Spearheaded user story creation and produced Jira documentation for web features, improving development clarity and delivery across teams.
Associate Software Engineer
Infosys
Feb 2021 - Jun 2021 (4 months)
Developed REST APIs using Java Spring Boot and contributed to e-commerce implementations and Shopify Liquid templates during client engagements.
Quality Assurance Tester
Raven Software
Aug 2019 - Jul 2020 (11 months)
Led QA testing for Xbox One releases on multiple Call of Duty titles, created 300+ bug tickets in six months and managed a team of 3 testers to ensure build quality.
Interim Executive Director
Ho-Chunk Nation
Jul 2019 - Aug 2019 (1 month)
Managed a monthly budget over $250,000 across five departments and led IT renovation planning with CTIO to realize multi-million dollar savings.
Technical Support Engineer
Inspiro
Dec 2018 - Jul 2019 (7 months)
Diagnosed and resolved hardware, software, and network issues, performed system upgrades and supported site-wide infrastructure improvements.
Inbound Chat Sales Rep
Inspiro
Jun 2018 - Dec 2018 (6 months)
Managed inbound chat sales, providing product guidance and achieving service targets while supporting customer acquisition goals.
Senior Guest Advisor
GameStop
Oct 2013 - Mar 2018 (4 years 5 months)
Provided customer service and sales support across retail operations, mentoring colleagues and maintaining store performance from 2013–2018.
Education
Degrees, certifications, and relevant coursework
FSFlatiron School
Software Engineering Bootcamp, Software Engineering
Completed an intensive Software Engineering bootcamp covering web development and engineering fundamentals.
CCColumbia College Chicago
Master of Arts, Management
Earned a Master of Arts in Management focused on leadership and organizational practices.
University of Wisconsin - Stevens Point
Bachelor of Arts, Communication
2015 -
Activities and societies: Minor: Web and Digital Media Development
Completed a Bachelor of Arts in Communication with a minor in Web and Digital Media Development.
Infosys Certification Program
Professional Certification, Software Development
Activities and societies: Spring & Angular Certification
Completed Infosys certifications in Spring and Angular frameworks.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
South KoreaSalary expectations
Social media
Job categories
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