Hi there, I'm Felix👋

Software Engineer

Building elegant solutions with modern technologies. Specialized in Android, Frontend, and Backend development.

About Me

Passionate software engineer with 4+ years of experience in full-stack development. I love creating innovative solutions and bringing ideas to life through code.

Contact Information

felixynx@gmail.com
Boston, MA
Available for opportunities
Download Resume

Professional Experience

Software Engineer

Mar 2024 - Present
Ahold Delhaize USA• Quincy, MA
  • •Designed and implemented scalable Android and backend features handling millions of customer interactions and real-time deal recommendations
  • •Integrated third-party APIs (Chicory, Gambit) into distributed shopping and ad pipelines, boosting in-app revenue by 50%
  • •Re-architected checkout and cart systems using GraphQL endpoints with caching layers, improving transaction reliability by 35% under peak load
  • •Optimized memory usage and performance bottlenecks, increasing crash-free sessions by 40% and ensuring system stability at scale
  • •Collaborated across backend, mobile, and product teams to deliver high-availability solutions and maintain production SLAs
Android
GraphQL
Java
Kotlin
REST APIs
Caching
Performance Optimization

Software Engineer

Jan 2023 - Mar 2024
Peapod Digital Labs• Quincy, MA
  • •Built and maintained GraphQL/REST services for Special Offers and Weekly Ads, enabling high-throughput data delivery to mobile and web clients
  • •Developed scalable Android features with Dagger, Room, Retrofit, and Jetpack libraries, reducing cold start times by 25%
  • •Optimized data caching and network layers to support concurrent users during promotional events with minimal latency
GraphQL
REST APIs
Android
Dagger
Room
Retrofit
Jetpack
Caching

Software Engineer Intern

May 2022 - Sep 2022
IDEMIA• Billerica, MA
  • •Developed Bluetooth, NFC, and QR integrations for a secure Mobile ID system, enhancing verification speed and reliability
Bluetooth
NFC
QR Code
Mobile ID
Security

Education

Master of Science in Computer Science

2023
Northeastern University• Boston, MA

Technical Skills

Programming Languages

Java
Kotlin
JavaScript
TypeScript
Python
C++

Mobile Development

Android
Jetpack Compose
Room
Retrofit
Dagger
RxJava

Backend Technologies

GraphQL
REST APIs
Node.js
Express.js
Caching
Performance Optimization

Tools & Platforms

Git
Docker
AWS
Android Studio
Postman
VS Code

Featured Projects

Here are some of my recent projects that showcase my skills and passion for development.

Travel Bucket List & Info Hub

Travel Bucket List & Info Hub

A full-stack web application for managing your travel bucket list with destination tracking, photo management, and trave...

React
TypeScript
Node.js
Express
Supabase
AWS S3
Tailwind CSS
Crypto Tracker

Crypto Tracker

A Python application that monitors cryptocurrency prices in real-time, sends email alerts when prices cross predefined t...

Python
Pandas
Matplotlib
Requests
SMTP
CoinGecko API
JukeBot Music Player

JukeBot Music Player

Real-time collaborative music sessions using Kotlin, Firebase backend, and GraphQL APIs, enabling synchronized group pla...

Android
Kotlin
Firebase
GraphQL
React
Real-time
E-commerce Platform (ShopEase)

E-commerce Platform (ShopEase)

A modern, full-stack e-commerce platform built with Next.js, React, TypeScript, and Express.js. Features comprehensive b...

Next.js
React
TypeScript
Express.js
Tailwind CSS
Framer Motion
Zustand
JWT
Docker
Voice App - Android Recording with Transcription & Summary

Voice App - Android Recording with Transcription & Summary

A robust Android voice recording application with real-time transcription and AI-powered summary generation. Features fo...

Android
Kotlin
Hilt
Room
Retrofit
Jetpack Compose
Coroutines
Flow
WorkManager
Telematics-Based Auto Insurance POC

Telematics-Based Auto Insurance POC

A proof-of-concept system for telematics-based auto insurance that simulates driving behavior, calculates driver risk sc...

Python
scikit-learn
pandas
numpy
FastAPI
Machine Learning
RandomForest
LightGBM
Joblib

Skills & Technologies

A comprehensive overview of the technologies and tools I work with.

Mobile Development

Kotlin
Expert
95%
Android SDK
Expert
92%
Retrofit
Expert
90%
Room Database
Advanced
88%
Hilt
Advanced
85%
Jetpack Compose
Expert
90%
Coroutines
Advanced
88%
Flow
Advanced
82%

Frontend Development

React / Next.js
Expert
92%
TypeScript
Expert
90%
JavaScript
Advanced
88%
Tailwind CSS
Expert
90%
Redux / Zustand
Advanced
85%

Backend Development

GraphQL
Expert
92%
REST APIs
Expert
95%
Node.js
Advanced
88%
Express.js
Advanced
85%
AWS
Advanced
88%
Firebase
Expert
95%
PostgreSQL
Advanced
85%
Docker
Advanced
80%

Get in Touch

Have a project in mind? Let's work together to bring your ideas to life.