Software engineer specializing in Flutter/Dart and Python, with experience building and maintaining mobile and web applications end-to-end. Worked on real-time notifications, REST API integrations, and production support across multiple environments.

Julie Sebastian

Software engineer specializing in Flutter/Dart and Python, with experience building and maintaining mobile and web applications end-to-end. Worked on real-time notifications, REST API integrations, and production support across multiple environments.

Available to hire

Software engineer specializing in Flutter/Dart and Python, with experience building and maintaining mobile and web applications end-to-end. Worked on real-time notifications, REST API integrations, and production support across multiple environments.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate

Language

English
Advanced

Work Experience

Mobile Developer / Senior Python Developer at ERNI Philippines Inc.
March 20, 2023 - May 1, 2026
Built and maintained mobile applications using Flutter, collaborating with cross-functional developers to translate Figma UI/UX designs into production screens. Integrated REST APIs and Firebase Cloud Messaging (FCM) for real-time push notifications. Researched and implemented a Proof of Concept using Shorebird for over-the-air app updates. Designed solutions to prevent device clock tampering to ensure accurate and reliable attendance logging. Provided production support and served as primary technical point of contact for client-reported incidents, coordinating with QA for load testing and validating scalability and reliability under high traffic.
Flutter Developer at FlexiSource IT Inc.
November 1, 2020 - March 1, 2023
Developed and maintained Flutter mobile applications based on Figma designs, ensuring successful test case execution. Built domain/service-layer unit tests. Developed responsive mobile UI and supported backend integrations using RESTful and GraphQL APIs for secure and efficient communication with backend services. Configured and implemented OneSignal push notification services and diagnosed/solved production defects to minimize disruption to end users.
Associate Software Engineer at Sykes Asia Inc.
July 1, 2018 - November 1, 2020
Implemented third-party identity verification (ID verification/KYC) APIs to support secure user onboarding. Embedded Highcharts visualizations by injecting JavaScript into an HTML web view for interactive financial charts. Wrote unit tests for BLoC components and Flutter widgets to improve code quality and maintainability. Created wireframes and interactive UI mockups using Figma. Leveraged Flutter packages and third-party libraries (e.g., Google Places autocomplete) and collaborated with designers, QA, and backend engineers to deliver features and resolve technical issues.

Education

Bachelor of Science in Computer Science at Polytechnic University of the Philippines
January 1, 2018 - January 1, 2023

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Computers & Electronics, Professional Services