Senior Software Engineer

Introduction

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.

Education

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

Competencies

• Displaying Technical Expertise
• Critical Thinking
• Solving Complex Problems
• Demonstrating Initiative
• Delivering High Quality Work

About Optimizely

At Optimizely, we're on a mission to help people unlock their digital potential. We do that by reinventing how marketing and product teams work to create and optimize digital experiences across all channels. With Optimizely One, our industry-first operating system for marketers, we offer teams flexibility and choice to build their stack their way with our fully SaaS, fully decoupled, and highly composable solution.

We are proud to help more than 10,000 businesses, including H&M, PayPal, Zoom, and Toyota, enrich their customer lifetime value, increase revenue and grow their brands. Our innovation and excellence have earned us numerous recognitions as a leader by industry analysts such as Gartner, Forrester, and IDC, reinforcing our role as a trailblazer in MarTech.

At our core, we believe work is about more than just numbers -- it's about the people. Our culture is dynamic and constantly evolving, shaped by every employee, their actions and their stories. With over 1500 Optimizers spread across 12 global locations, our diverse team embodies the "One Optimizely" spirit, emphasizing collaboration and continuous improvement, while fostering a culture where every voice is heard and valued.

Benefits

• We are Vietnam Best IT companies 2026 by ITviec.
• Hackdays for self-studying and researching any IT-related subjects.
• 5 working days/week with flexible working time and no overtime.
• Annual unforgettable company outing.
• 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.
• Up to 03 extra paid-leave days per year.
• Social, Health and Unemployed Insurance are based on 100%.
• Gross salary and fully paid by Company.
• Extra bonus at $ 60 per special occasions (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.