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Full Stack Software Engineer at Freelancer.com | London

Freelancer.comLondon, England, United Kingdom
On-site Full-time

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What You’ll DoDiagnose and resolve performance issues across both front-end (Angular) and back-end (PHP, Python, Go). Enhance page load speed, rendering performance, and API response times. Contribute to our design system and develop reusable UI components using Angular and TypeScript. Maintain and evolve scalable backend systems for high-performance APIs. Work collaboratively with cross-functional teams to implement best practices in performance, usability, and accessibility. Engage in architectural discussions and continuously enhance our codebase and tooling. Champion and facilitate performance monitoring and testing practices. What We’re Looking For2–4 years of professional experience as a full-stack or frontend engineer. Strong proficiency in Angular and TypeScript. Comfortable with backend technologies such as PHP, Python, or Go. Solid understanding of frontend performance optimization techniques. Familiarity with RESTful API design and backend performance considerations. Experience building and maintaining reusable UI components. Exposure to design systems or component libraries. Excellent communication skills and a collaborative approach. A proactive mindset, capable of taking ownership and driving tasks to completion. Bonus Points (Nice to have)Knowledge of accessibility and UI/UX design principles. Understanding of SEO and frontend performance metrics. Experience with automated testing frameworks (e.g., Jest, Cypress).

About the job

Join our dynamic Platform Performance team as a Full-Stack Software Engineer with 2–4 years of experience, and help us create fast, scalable solutions for millions of users globally.

In this role, you will engage in all aspects of the software stack—enhancing frontend performance, optimizing backend services, and improving the responsiveness, reliability, and overall user experience of our interfaces. You will collaborate with a dedicated team of engineers and product managers to identify performance bottlenecks, contribute to architectural enhancements, and help advance our design system.

This position is a fantastic opportunity for a driven engineer who is eager to expand their skillset in a fast-paced environment and make a significant impact at scale.

Freelancer.com is the largest freelancing and crowdsourcing platform in the world, connecting over 80 million users across 247 countries and territories. Our platform empowers businesses, entrepreneurs, and individuals to collaborate with skilled professionals globally, turning ideas into reality more efficiently than ever.

Our ambitious mission is to create one billion jobs worldwide by enabling people to work for themselves and build sustainable online careers. Every feature we develop and every performance enhancement we implement brings us closer to realizing this unprecedented opportunity.

About Freelancer.com

Freelancer.com is the world's leading freelancing and crowdsourcing marketplace, connecting over 80 million users across 247 countries, regions, and territories. We are dedicated to empowering individuals and businesses by enabling them to collaborate with skilled professionals globally, facilitating the swift realization of their ideas.

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