Ewe José Omusi Sáez

Software Engineer

27 years oldMadrid, Spain

Building scalable software, analyzing data and deploying infrastructure

🇪🇸Spanish (Native)

🇺🇸English (Professional)

View Projects Contact

Actively looking for work opportunities

Featured Project

Xenora Rush - Competitive Multiplayer Game

Xenova Rush

High-performance distributed system with AWS cloud architecture. Built serverless backend with Lambda and API Gateway, scaled game servers with Amazon GameLift and managed infrastructure as code with Terraform. Developed observability dashboards with Grafana, implemented distributed tracing with OpenTelemetry and AWS X-Ray, and created ETL pipelines for game analytics and performance monitoring.

☁️AWS

⚙️Lambda

⚙️GameLift

⚙️DynamoDB

⚙️Terraform

⚙️CI/CD

🟢Node.js

💎C#

🎮Unity

🐘PostgreSQL

⚡Next.js

⚙️Grafana

⚙️OpenTelemetry

⚙️CloudWatch

⚙️AWS X-Ray

⚙️Data Analysis

⚙️ETL

View more projects →

Skills↓

Technical Skills

Technologies and tools I work with

Proficiency:

Working Knowledge

Good Understanding (1-2+ years)

Professional (3+ years)

Expert (5+ years)

🛠️Backend & System Architecture

Node.js

TypeScript/JavaScript

RESTful APIs

Microservices

Express

Java

Python

SQL

PostgreSQL

MongoDB

C++

🎨Frontend, Observability & Tools

React

Next.js

HTML/CSS

Tailwind CSS

ES6+

Vite

Jest

TDD

PostHog

Grafana

OpenTelemetry

AWS X-Ray

CloudWatch

Angular

☁️Cloud Infrastructure & DevOps (IaC)

Git

AWS (API Gateway, Lambda, GameLift, DynamoDB, S3, EC2, Cognito...)

CI/CD

Docker

GitHub Actions

Vercel

Cloudflare

Networking (TCP/IP, UDP, WebSocket...)

Linux Admin

Terraform

Terragrunt

Jenkins

Prisma

📊Big Data & Analytics Pipelines (ETL)

Python

PySpark

AWS Glue

Amazon Athena

Parquet

Snappy

Redis

Featured Projects

Visual proof of my skills

Xenova Rush

☁️AWS⚙️Lambda⚙️GameLift⚙️DynamoDB⚙️Terraform⚙️CI/CD🟢Node.js💎C#🎮Unity🐘PostgreSQL⚡Next.js⚙️Grafana⚙️OpenTelemetry⚙️CloudWatch⚙️AWS X-Ray⚙️Data Analysis⚙️ETL

TaskManager Pro

Full-stack web application with team collaboration, project management, and real-time task tracking. Built with modern architecture and best practices.

⚛️React🔵TypeScript🟢Node.js🚀Express🐘PostgreSQL🔥Prisma⚡Vite🎨Tailwind CSS

Brutoria

Mobile autobattler game with strategic gameplay mechanics and automated combat. I worked as co-creator and senior developer, providing technical guidance and mentoring in code architecture to the development team.

🎮Unity💎C#⚙️Mobile⚙️Game Design⚙️Mentoring

OtakuCollector

Professional e-commerce platform specializing in anime products. Built with Shopify using a fully custom theme and advanced custom logic for product management, inventory tracking, and customer experience optimization.

⚙️Shopify⚙️Liquid⚙️JavaScript⚙️CSS/SCSS⚙️Custom Theme Development⚙️E-commerce

Peluquería Booking Platform

Multi-business salon booking stack pairing a conversion-focused landing with a three-step wizard and a realtime admin workspace for services, staff, schedules, and policies backed by Prisma + PostgreSQL.

⚙️Next.js 15⚙️React 19🔵TypeScript⚙️Tailwind CSS 4🎬Framer Motion⚙️FullCalendar🔥Prisma🐘PostgreSQL⚙️Supabase⚙️Resend⚙️Jest

🎤

Voice-to-Text Application

Hotkey-driven Faster-Whisper companion that types real-time transcripts anywhere on Windows. Privacy-focused offline local inference for instant transcription without external API dependencies.

⚙️Python⚙️Faster-Whisper⚙️Windows⚙️Real-time Processing⚙️Local Inference

Problem Solving

Technical challenges and optimization solutions

⚡

10x Performance Improvement with Custom Delta Compression

I optimized server-client data transmission by implementing custom Delta compression algorithms, achieving significant performance improvements for real-time synchronization in multiplayer applications.

optimizationnetworkingalgorithms

🎯

Local Prediction and Server Reconciliation for Instant Feedback

I implemented client-side prediction with server reconciliation to provide instant feedback to the user while maintaining server authority and preventing cheating in multiplayer games.

gamedevnetworkingprediction

About Me

I currently live in Spain and am looking for work opportunities. I am available for both freelance contracting and standard employment, with a very flexible schedule ready to adapt to different time zones and project needs.

📎Download CV

When I'm not programming

I believe in maintaining a healthy work-life balance:

📺 Watching series

👥 Chilling with friends

🎮 Creating video games and exploring new game mechanics

Contact me!

GitHub LinkedIn Email Phone