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Senior Software Engineer (co-browsing core)

  • Amsterdam, Noord-Holland, Netherlands

Job description

Working @Surfly

Surfly, a rapidly growing Amsterdam-based tech company, is revolutionizing online interactions with our innovative virtual browser solution. We're looking for a Senior Software Engineer with expertise in Python, Go (server-side), and vanilla JavaScript (client-side) to join our dynamic team.

Who we are looking for:

We are looking for a Senior Software Engineer to work on our sandboxing proxy, which drives all our products. Our stack currently consists of Python and Go on the server-side, and vanilla JavaScript on the client-side.

As a Software Engineer at Surfly, you'll:

  • Develop and maintain our versatile HTTP and WebSocket proxies, implementing sophisticated content rewrites on-the-fly.
  • Contribute to our JavaScript sandbox, enabling the addition of new functionalities to any JS code.
  • Implement and maintain features for our co-browsing solution.

We offer:

  • Competitive salary and benefits package.
  • Opportunity to work with a team of highly skilled and experienced engineers who are passionate about what they do.
  • Chance to work on an innovative product that is an infinite source of knowledge and offers a challenging and exciting work environment.
  • Supportive and collaborative work culture that encourages continuous learning and professional growth.
  • Opportunities to attend conferences and training sessions to improve your skills and stay up-to-date with the latest technologies and industry trends.
  • Chance to work in the heart of Amsterdam, one of the most vibrant and beautiful cities in Europe.

If you are looking for an opportunity to work with an innovative and dynamic team, where you can contribute your skills and expertise to a cutting-edge product, we encourage you to apply today!

Job requirements


  • Advanced knowledge of JavaScript.
  • A solid understanding of core web and browser concepts (e.g., how browsers parse and construct web pages).
  • Experience in identifying and solving performance and optimization problems in client-side web applications.
  • Understanding of the HTTP protocol.
  • Be comfortable debugging minified and uglified JavaScript code and spending most of the day in browser developer tools.
  • Understanding of cross-browser compatibility issues and ways to work around them.
  • Experience developing automated unit, integration, and functional test suites (e.g., Selenium, unittest, Mocha, Karma, etc.).
  • Working knowledge of Python.
  • Experience using Git in a professional workplace environment.
  • Self-motivated and self-managing.
  • A great deal of patience.
  • Bonus: Typescript, Go.


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