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Senior JavaScript development services might include:

• Work with a team of developers, designers, and technical leads to implement scalable solutions
• Code individually and collaboratively to solve problems as they arise
• Build integration tests and improve product reliability through troubleshooting
• Develop new features and improve existing functionality through usable tools and smoother workflows
• Remotely attend meetings with other key developers and stakeholders

Requirements to become a senior JavaScript developer on Upwork:

• Must be over the age of 18 with an internet connection
• Experience is not required but is preferred

Preferred skills for senior JavaScript developer freelancers:

• Experience building applications in Java/TypeScript
• Familiarity with automated JavaScript testing, specifically testing frameworks such as Jest or Mocha
• Experience in project management
• At least three years of experience working with software and systems
• Bachelor’s degree in computer science or related field or equivalent experience

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• Iran
• North Korea
• Syria
• Crimea region of Ukraine
• Cuba
• Individual nationals of Cuba
• Any other country or region restricted by law (this changes occasionally)

In compliance with U.S. law, Upwork does not conduct business with individuals and entities on a list called the Specially Designated Nationals ("SDN") list.

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