Jirath "Bart" Lojanarungsiri

Jirath "Bart" LojanarungsiriFull-Stack Developer

Boston, USA | Bangkok, Thailand

Boston, USA10 Nov 2024

Qualifications

B.S. Computer Science with a Concentration in SoftwareMinor in MathematicsGPA: 3.83 / 4.00Awards: Dean's List Fall 2023, Spring 2024, Fall 2024, Spring 2025, Fall 2025

Sep - Dec 2026

Boston, MA, USA

Generate

Software Tech Lead (Boutline team)

Boston, MA, USA

Sep - Dec 2026

Coming soon 👀 but we just finished recruiting!

Sep - Dec 2026

Boston, MA, USA

Northeastern University

Algorithms and Data Structures Teaching Assistant

Boston, MA, USA

Sep - Dec 2026

Coming soon 👀

Jan - Sep 2026

Boston, MA, USA

Flexcar

Full Stack Engineer Co-op

Boston, MA, USA

Jan - Sep 2026

Built an internal React/Rails manual review dashboard that cut review time by 67% and flagged 10,000+ orders in 6 months; thousands were rejected to prevent fraud/high-risk approvals
Strengthened Stripe payment flow for adding secondary drivers (10,000+ enrolled) by formalizing a state machine to eliminate ambiguous account states
Discovered and resolved 2 legacy bugs that silently skewed ~4% of our customers to be incorrectly approved for orders
Coordinated with Apple, AWS, marketing, and company leadership to restore signups for 3000+ Apple email users that couldn't signed up
Designed and implemented email validation on signup and email change, hardening entry points for 100,000+ accounts
Designed and built a coupon management tool for our marketing team to utilize and distribute
Decommissioned Zendesk and integrated Kustomer for our customer service flow
Converted our incident management page from a .erb file (Ruby) into inertia (React) for improved maintenance and standardized UI/UX
Built the family plan inspection tool and discovered edge cases that were not accounted for in the original design
Worked on a few miscellaneous blocking production issues reported by our operations team
Created a new onboarding doc and mentored new co-ops to get up to speed with our codebase and processes

TypeScript

JavaScript

React Native

React

Tailwind CSS

Ruby on Rails

Jan - Apr 2026

Boston, MA, USA

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Software Engineer (Toggo Team)

Boston, MA, USA

Jan - Apr 2026

Built a trip planning app on a team of 5 designers and 7 engineers
Served as a frontend lead assigning tickets and running QA code reviews
Designed S3 image upload and compression pipeline
Setup React Native design system and component library
Eliminated N+1 patterns and reduced endpoint latency from 3s to 0.5s

TypeScript

React Native

React

Tailwind CSS

Jun - Aug 2025

Remote

What's the Word?

Software Developer

Remote

Jun - Aug 2025

Implemented ticketing through Stripe integration for 800+ users
Boosted performance by 70% through query optimization and efficient state management
Migrated the codebase from Flutter to React Native
Consulted with 2 developers for non-technical co-founders

TypeScript

JavaScript

Supabase

Firebase

Flutter

PostgreSQL

React Native

Tailwind CSS

Stripe API

Jan - Apr 2024

Oakland, CA, USA

Northeastern University

Farm Crew

Oakland, CA, USA

Jan - Apr 2024

Cultivated 20+ crops and flowers
Created high-demand flower bouquets for farm stand (100% sell-through rate)
Ran the farm stand, processing 20+ transactions weekly
Aided with setup and dismantle of farm stand

Projects

A Little Bit About Me

me and a friendNara, Japan 2025

I'm Bart, a third-year, first-gen college student studying Computer Science at Northeastern University. I'm from Bangkok, Thailand and am currently based in Boston, USA.

I'm quite interested in Full Stack Development, Artificial Intelligence, and Distributed Systems. Though, debugging distributed systems is the kind of pain I wouldn't wish upon anyone (I hate TOCTOU with a passion).

Outside of that, you'll find me watching Hololive, going on long runs, playing Plonkstars, or perfecting my omurice.

Thanks for stopping by! I'd love to connect.