Brian Sela

Full Stack & Mobile Engineer · 8+ years · React Native · Rails · Go · Python · TypeScript

626 E 14th St, New York, NY 10009 (347) 552-2021 briansela@gmail.com github.com/briansela linkedin.com/in/briansela
Experience
Juno Software Mar 2024 – Present
Founder & Mobile Engineer · Remote
  • Designed and built a mobile-first productivity app for contractors using React Native, Firebase, and a Rails/PostgreSQL backend.
  • Partnered with 3 companies for active pilot testing and iterative product development.
  • Sole contributor across product, engineering, and client relationships.
Springbuk Jun 2023 – Dec 2023
Software Engineer (Contract) · Remote
  • Built the 'Activate' partner platform using Rails and Snowflake.
  • Created dynamic filters and admin tools with React and Rails.
  • Upgraded backend APIs to Rails 7 and supported an ODBC adapter rebuild.
Slice May 2018 – Apr 2023
Software Engineer · New York
  • Migrated business logic from Rails to Go/Python microservices, improving scalability and service isolation.
  • Rebuilt real-time shop ratings engine using RabbitMQ and Python.
  • Implemented Stripe-based fraud checks, reducing chargebacks by 50%.
  • Enhanced owner portal (React + AWS S3) and automated Twilio operations.
Skills & Technologies
Languages Ruby, Python, Swift, Kotlin, JavaScript, Go, TypeScript
Frameworks Rails, React, React Native
Mobile iOS, Android, Firebase, Swift Package Manager
Tools AWS, Git, RabbitMQ, Elasticsearch, PostgreSQL, Snowflake
Project Highlight

Contractor Productivity App — Juno Software

Mobile productivity platform with smart scheduling, checklists, and real-time sync. Currently in active pilot with 3 companies. Built solo across the full stack — React Native frontend, Rails/PostgreSQL backend, Firebase for real-time features, and Python for data processing utilities.