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Senior .Net Fullstack Developer

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Optimizely

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Location:
Vietnam , Hanoi

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

The Expert Services team consults with customers and partners on best practices with regard to implementations of our commerce, content management, and digital marketing solutions. You will support customers and partners with architectural design, development, third party integration strategy, and application performance tuning. The developer role is a dynamic customer facing position that requires previous consulting or services experience. Our offices offer collaborative work environments and close-knit teams. We have multiple teams working for our international clients, handling projects based on Microsoft technologies, such as ASP.NET.

Job Responsibility:

  • Exceed your billable utilization target
  • Manage multiple application development projects simultaneously
  • Assist with the development of service estimates as required
  • Provide best practice advice and guidance to clients and partner development teams
  • Administer high quality technical consultancy and implementation work at partner and/or client location
  • Participate in partner's projects in-house or on-site delivering production ready code and troubleshooting live/development environments
  • Develop, customize and implement features based on Optimizely's products upon request
  • Ability to leverage common generative AIs to improve productivity

Requirements:

  • Prior experience in .NET projects: .NET, ASP.NET
  • Experience with GraphQL, WebAPI
  • Knowledge of Node and ReactJS, JavaScript, HTML5, CSS
  • Knowledge and experience with TFS, GIT, JIRA or other source control software
  • Advanced Microsoft Data Technologies: ADO.NET, SQL Server, Entity Framework
  • Good in implementing & optimizing .NET Server-side technologies
  • Very good in understanding & applying Design Patterns/Design Principles
  • Good problem-solving skills
  • Proficient in code review, code refactoring
  • Experience working in an Agile/Scrums Software Development environment
  • Ability to work on multiple projects and in team
  • Good attitude regarding self-testing and self-learning
  • Tertiary qualifications in Computer Science or equivalent
  • Good in English, at least written
  • Ability to take ownership for tasks and projects Service oriented
  • Ability to troubleshoot software issues
  • Be able to work with a wide variety of technologies and end users

Nice to have:

  • Experience with E-commerce and/or Optimizely CMS is a big plus
  • Skills in front-end engineering using Object-Oriented JavaScript & Responsive web design are an advantage
  • Experience in one of following JavaScript library/framework: AngularJS, React, Vue
  • Good spoken English is a big plus

Additional Information:

Job Posted:
April 11, 2026

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