Jonny Saykosy

LinkedIn | GitHub | Portfolio | Paris, France | josayko@pm.me

Software Engineer / Web Developer

I am a passionate developer with a specialization in backend development and software architecture. With expertise in TypeScript, Node.js, and Kubernetes, I thrive in dynamic environments where I can design technical solutions tailored to the needs of end-users and industry professionals. My focus is on creating scalable SaaS platforms, optimizing performance, and ensuring robust deployment practices for various sectors.

Professional Experience

Software Engineer

  • Self-employed
  • December 2024

Web Developer Fullstack

  • Sofya (Vertical Sea Group)

  • Paris, France — September 2022 - December 2024

  • SaaS Platform Development: Built a SaaS platform for real estate construction professionals, including features such as document management (GED), visa tracking, and digital twin visualization (BIM).

  • Architecture Migration: Led the migration from a monolithic JavaScript architecture (Loopback) to a microservices architecture in TypeScript, achieving a 20% increase in load speed and modularity.

  • System Design & Optimization: Integrated Clean Architecture and Domain-Driven Design principles for optimal feature structuring.

  • Real-Time Communication: Created a real-time messaging system with WebSockets and Socket.io, supporting communication for 9000+ active users.

  • Frontend Upgrades: Maintained and updated the frontend using Angular, transitioning from Angular 11 to Angular 18 to improve responsiveness and accessibility.

  • Deployment & Infrastructure: Managed and optimized Kubernetes clusters for 99.9% platform availability. Automated CI/CD processes with GitHub Actions and Docker on OVH Cloud.

Sales Consultant

  • J.M. Weston, Fontana, Mariage Frères

  • Paris and Tokyo — 2014 - 2019

  • Worked as a luxury sales consultant, enhancing skills in client management and cross-cultural communication.

Education

  • Bachelor’s Degree in Computer Science - Conservatoire National des Arts et Métiers (CNAM) September 2022, Paris, France

  • Digital Technology Architect - École 42 November 2019 - October 2022, Paris, France

  • Python Django Application Developer (RNCP Level 6) - OpenClassrooms August 2021 - June 2022

  • Associate’s Degree in Japanese Language and International Business - INALCO September 2010 - June 2013, Paris, France

Technical Skills

  • Backend: TypeScript, JavaScript, Node.js, Express, Python, FastAPI
  • Frontend: Vue.js, Nuxt, Angular, TailwindCSS
  • Architecture & DevOps: Microservices, Clean Architecture, Domain-Driven Design
  • Deployment & Infrastructure: Docker, Kubernetes, GitHub Actions
  • Databases: MongoDB, PostgreSQL
  • Tools: Git, Linux, GitHub

Languages

  • French: Native
  • English: TOEIC 900
  • Japanese: JLPT N3

Interests

Beyond programming, I have a strong passion for martial arts, especially traditional karate. I’m also a retro video game and vinyl record collector, with a keen interest in personal finance and continuous learning.

You can connect with me on LinkedIn and view my projects on GitHub .