Jul 2024 – Jul 2025 · 1 yr · Australia · Remote

• Played a key engineering role in the development and launch of Leadshook V3, a large-scale decision tree platform powering thousands of client campaigns and high-throughput lead generation funnels.
• Fixed dozens of legacy issues and architectural bugs in the core system, significantly improving platform stability, performance, and reliability under heavy load.
• Actively contributed to modernizing the codebase with TypeScript, NestJS, PostgreSQL, and advanced caching strategies, aligning the system with current engineering best practices.
• Led debugging and optimization efforts across multiple modules, including the decision engine, analytics tracking, and custom webhook flows, reducing critical error rates by over 40%.
• Worked closely with the Leadshook founders to scope and implement core features for V3, introducing modular schema handling, reusable integrations, and improved testability.
• Demonstrated autonomy and deep ownership by proactively identifying architectural bottlenecks and pushing production-ready fixes and enhancements with minimal oversight.

Jan 2023 – Sep 2024 · 1 yr 8 mos · Riyadh, Saudi Arabia · Remote

• Spearheaded the end-to-end design and development of a cutting-edge microservice web and mobile application at enterprise scale.
• Achieved a remarkable user base of over 2,000,000 active users through the proficient utilization of React, Express, TypeScript, and
• MongoDB.
• Surpassed expectations by delivering a highly sophisticated, robust, and scalable backend infrastructure, adeptly handling a peak load
• of over 250 requests per second.
• Pioneered the creation and implementation of a comprehensive analytics system, coupled with an intuitive admin dashboard,
• enhancing data-driven decision-making and streamlining website management processes.
• This is what my employer had to say about my work:
• "Firas is an expert in both Node.js and React. Our job was complex and required a lot of optimization due to our website receiving more than 200 requests per second. Initially, I was worried he wouldn’t be able to do it correctly, but he exceeded my expectations and completed the task professionally. It’s rare to find a programmer who excels in both UI/UX and backend development. Firas is also a great communicator and suggested many ways to optimize our website. He knows what he’s doing, and everything worked perfectly. I’m impressed by his skills and expertise"

Nov 2021 – Jan 2023 · 1 yr 2 mos · Délégation Djerba Midoun, Médenine, Tunisia · On-site

• Collaborated within a dynamic team to contribute to the development of Tutosh, a robust e-learning platform featuring seven
• microservices. Engaged in the creation of a large-scale application utilizing TypeScript, PostgreSQL, NestJS, GraphQL, and Angular
• technologies.
• Gained valuable hands-on experience during an internship at Tutosh, actively participating in the design and implementation of
• intricate microservices architecture.
• Successfully collaborated with a cross-functional team, fostering a collaborative environment to achieve project goals within the
• e-learning domain. The internship at Tutosh served as a valuable learning opportunity, honing skills in teamwork and project
• coordination.