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Senior Software Engineer

Vacant position(s) at Optimizely (formerly Episerver) - Hanoi, Vietnam.
Position ID: #1542
Dept: Software Engineering
Apply Now


We are looking for a senior front-end engineer working on the Content Cloud product – one of the most important products in our platform. If you are looking to work on the next generation of digital technologies in a fast-paced, hyper-growth environment, apply! We’re just getting started...

Job Responsibilities

  • Be a sensible and pragmatic engineer developing simple, high-quality and well tested minimum viable solutions meeting set requirements and following applicable principles and processes.
  • Be passionate for continuous learning, experimenting, applying, and contributing to innovative technologies and software paradigms.
  • Understand the value of modern software engineering practices such as scrum, pair programming, TDD, and clean code principles.
  • Take ownership of your contribution to the product, the quality, and the long-term maintainability of the contributed code.
  • Contribute to discussions with your team on everything from ideation through architecture and design to implementing and supporting the products and services.
  • Review pull requests from colleagues in Hanoi and Stockholm. This is an important task in our work process to guarantee quality.
  • Support other senior developers in Euro and US to use and customize/extend our framework.

Knowledge and Experience

  • 5+ years of experience working professionally with modern development practices.
  • Proficiency in developing applications using modern JavaScript technologies, particularly React and Redux.
  • Experience investigating and resolving problems, defects, and bugs reported to the team.
  • Experience working in a development team following requirements provided by stakeholders and solution architecture and design provided by technical leaders.
  • Communication skills, verbally and in writing, especially in English, to effectively communicate progress, issues, obstacles, solutions, and points of view.
  • Ability to work independently but avoid getting stuck by knowing when to ask for help.
  • Worked in a software product organization with defined processes, value following, and seeking improvements to those processes.
  • Experience with CI/CD and tools like Git, and NPM.

We’d love to see

  • Experience in building server-side applications, ideally HTTP APIs Rest Services / GraphQL written in C#.
  • Knowledge of micro-frontend architecture.
  • Understanding of web authentication tools and mechanisms.
  • Experience in building cloud platforms and services.
  • Being familiar with design system thinking, e.g. experience with Material design systems or other design systems.
  • Experience and building solutions based on Optimizely (formerly Episerver) Content or Commerce Clouds.


  • Bachelor’s Degree (Computer Science or engineering preferred) or equivalent work experience


  • Displaying Technical Expertise
  • Critical Thinking
  • Solving Complex Problems
  • Demonstrating Initiative
  • Delivering High Quality Work
Position ID: #1542
Dept: Software Engineering
Apply Now

About Optimizely

Optimizely is focused on unlocking digital potential and we are the recognized category leader in Digital Experience Platform (DXP) and created the category for A/B Testing and experimentation software. We have incredible customers – isn’t that one of the most important aspects of looking for your next job? Optimizely has over 9,000 brands from global organizations such as Visa, Sky, Yamaha, Wall Street Journal to tech innovators like Atlassian, DocuSign, FitBit and Zillow.

Not only are we financially sound and growing but we have unicorn status: Exceeded $300M in revenue in 2020, is profitable already, and has all strategic options ahead of itself. Optimizely continues to invest and addresses a market opportunity north of $30 billion, providing significant personal career growth opportunities.

We are an inclusive culture with a global team of 1200+ people across the US, Europe, Australia, and Vietnam. We blend European and American business culture with emphasis on teamwork, inclusion, and moving fast. People make the difference!

If you are looking to work on the next generation of digital technologies in a fast-paced, hyper-growth environment, apply! We’re just getting started...


  • 5 working days /week with flexible working time and no overtime;
  • Annual luxury Kick-off vacation;
  • International, professional, creative working environment and talented teams
  • Onsite opportunities in Europe and US;
  • Common cultural-sportive- art Clubs and activities, sponsored and/or supported by the Company (Ex: Football, GYM, Swimming, Guitar, English…).
  • Powerful workstation: Core i7-9700, 16-32 GB RAM, 02 x QHD 2560x1440 monitors (2K resolution);
  • 100% official salary during the probation period, 13th month salary, annual salary raise;
  • 12 days of annual leave and 3 days of company holidays (New Year eve 31/12, Junteenth day 18/6, Work Anniversary)
  • Up to 03 extra paid-leave days per year
  • A free “Hacking day” per month for self-studying and researching any IT-related subjects;
  • Social, Health and Unemployed Insurance are based on 100% Gross salary and fully paid by Company;
  • Extra bonus at $ 60 per special occasions (Birthday, Labour Day, National Day, Solar New year, Lunar New Year);
  • Lunch allowance at $30 per month;
  • Baby allowance for a child under 03 years old is $ 12 per month;
  • AON Premium Healthcare Insurance package for employees and their children up to 18 years old.
  • Daily various foods, drink, and seasonal fresh fruits;