Skip to content

rfostii/rfostii

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

4 Commits
 
 

Repository files navigation

Hi, I’m Ruslan Fostii 👋

Senior Software Engineer

I’m a software engineer with 12 years of experience, specializing in refactoring and modernizing complex systems used by many users.
I focus on long-term stability, maintainability, and sustainable solutions, helping teams build reliable and scalable software.

I like to understand how systems work as a whole, instead of focusing on isolated parts.


💡 Core Strengths

  • 🧠 Maintaining system context and evolution over years
  • 🔧 Refactoring and modernizing large-scale applications
  • 🗂 Reducing complexity and preventing technical debt
  • ⏳ Consistent, reliable execution over long-term initiatives
  • 🎯 Strategic thinking and thoughtful decision-making
  • 👨‍🏫 Mentoring mid-level and senior engineers
  • 🔄 End-to-end system understanding

🏢 Experience

Senior Frontend Developer — Booking.com

Mar 2022 – Present · Amsterdam, Netherlands

  • Responsible for modernization and stable operation of a distributed platform used by 30+ teams
  • Plan and coordinate system migrations and upgrades
  • Advise teams and ensure the platform evolves in the right direction without downtime
  • Mentor engineers at Middle level and above
  • Actively contribute to strategic planning
  • Conduct technical interviews

Frontend Developer — Booking.com

Jun 2017 – Mar 2022 · Amsterdam, Netherlands

  • Maintained and modernized complex, high-traffic frontend applications
  • Improved architecture and development workflows
  • Performed code reviews and mentored engineers
  • Delivered incremental improvements to long-living systems

Senior Software Engineer — EPAM Systems

Jul 2016 – May 2017 · Lviv, Ukraine

  • Led an AngularJS project and refactored it to become scalable and maintainable
  • Unblocked development when the project reached a technical dead end
  • Ensured on-time delivery for a large oil & gas client
  • Mentored engineers and introduced sustainable architectural practices

Software Engineer — EPAM Systems

Oct 2015 – Jul 2016 · Lviv, Ukraine

  • Developed and maintained enterprise user-facing applications
  • Assisted with architectural improvements and system stability

Middle Software Engineer — SoftServe

May 2015 – Oct 2015 · Chernivtsi, Ukraine

  • Worked on migration of large healthcare products to modern technologies
  • Improved system stability and long-term maintainability

📜 Certifications

AWS Brainbench CIW Microsoft MCPS


🛠 Tech & Tools

TypeScript JavaScript Vue.js React Node.js Jest CI/CD Git Kubernetes

and many others tools I don't even remember now


⚡ Work Approach

I prioritize clarity, reliability, and sustainable solutions over short-term gains.
I work best in teams that value predictable development, calm execution, and long-term thinking.

I’m particularly effective at making legacy and complex systems easier to maintain, evolve, and trust.


📫 Connect with me

LinkedIn GitHub Email

About

No description, website, or topics provided.

Resources

Stars

Watchers

Forks

Releases

No releases published

Packages

 
 
 

Contributors