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Senior Software Engineer

Date: Mar 12, 2023

Location: Hanoi, VN

Company: 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...




We are looking for a Senior Software Engineer for one of our SaaS teams in Hanoi, to help us shape the future experiences of Optimizely's APIs. You are self-motivated and like to collaborate with your colleagues to find the best solution that solves the problem, considering architecture, cost of development, and cost of ownership. You are comfortable working in a fast-moving agile environment and closely with User Experience Designers, Product Managers, and other stakeholders.

Job Responsibilities


  • Design, architect and implement simple, secure, scalable, maintainable, and cost-effective software solutions
  • Ensure product quality by developing and applying thoroughly automated testing techniques
  • Deploy, monitor, and maintain cloud-based services
  • Contribute to architecture and design discussions within your agile team as well as across teams and products
  • Contribute to project planning including requirements elicitation, design, task grooming, and scoping
  • Pursue growth by maintaining an awareness of the state of technology, engineering techniques, and best practices.

Knowledge and Experience


  • You have 5+ years of experience in the development of scalable, production services, backend development
  • You have strong experience with Cloud Computing platform and an understanding of scaling and reliability concerns
  • You have experience with GraphQL Server frameworks
  • You have experience working with TypeScript and Node.js
  • You have experience designing services and APIs with concern for performance, availability, observability
  • You ascribe to DevOps principles regarding delivery performance, quality, and customer satisfaction
  • You maintain an awareness of the state of technology, tools, and techniques.


Experiences with the following technologies are also advantageous:


  • Experience using Elasticsearch
  • Experience using Docker and Kubernetes
  • Experience using Cloudflare workers or other Serverless application platform
  • Experience designing and developing distributed applications
  • Experience using Azure.



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

About us:

  • 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 2 days of company holidays (New Year's eve 31/12, Juneteenth 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 occasion (Birthday, Labor 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;

And many other benefits, let's join us to discover!


Optimizely is committed to a diverse and inclusive workplace. Optimizely is an equal opportunity employer and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.