Khodor Ammar

Principal frontend engineer with 15+ years’ experience building high-performance, accessible, and scalable frontends. Expert in React, TypeScript, and modern web architecture, with a track record of leading teams, improving performance at scale, and delivering seamless user experiences across complex systems. Passionate about developer experience, quality, and mentoring.

Key Skills & Technologies

  • Frontend React, TypeScript, JavaScript, HTML, CSS, Web Performance & Accessibility
  • Backend Node.js, document-based databases, Python
  • Architecture & System Design Modular components, micro-frontends, state management, security
  • Leadership / Process Engineering strategy, code reviews, coaching, cross-team collaboration, performance metrics

Experience

2025 - Present

Principal Engineer at Klarna in Stockholm, Sweden

As Principal Engineer, I lead the frontend architecture and technical strategy for Klarna’s web payment solutions. My focus is on building scalable, reliable, and accessible platforms while mentoring engineers and aligning cross-functional teams around best practices and performance goals.

2020 - 2025

Engineering Manager at Klarna in Stockholm, Sweden

Led the team responsible for Klarna’s embeddable payment widgets used globally across merchant platforms. I focused on enabling high-quality integrations, improving developer experience, and ensuring frontend scalability at Klarna’s scale.

2017 - 2020

Technical Lead at Hogarth in Dubai, UAE

Directed the frontend for a very large, globally standardized website, ensuring scalability, maintainability, and alignment with client guidelines. Also developed cross-functional tooling to support teams and improve delivery efficiency.

2014 - 2017

Technical Lead at Prototype Interactive in Dubai, UAE

Defined frontend technical vision and best practices while coaching engineers. Oversaw multiple large-scale web projects from design through delivery, with an emphasis on performance and long-term maintainability.

2009 - 2014

Senior Web Developer at STeP in Beirut, Lebanon

Transitioned from full-stack development into leading frontend initiatives, introducing modern tooling and development practices to the team.

Education

2009

MS In Web Development from the Lebanese University,
Faculty of Sciences II

2008

BS in Computer Science from the Lebanese University,
Faculty of Sciences I

Languages

Native Arabic speaker with fluent English, conversational French, and currently learning Swedish.

Others

Certified Emergency Medical Technician and trainer in leadership, teamwork, and conflict resolution at the Lebanese Red Cross Emergency Medical Services since 2007.