Principal Software Engineer - Full Stack

Principal Software Engineer - Full Stack

Bangkok, Bangkok

Our client is an online travel booking platform for accommodations, flights, and more. They build and deploy cutting‑edge technology that connects travelers with more than 3.6 million accommodations globally. Based in Asia and part of Booking Holdings, their 6,000+ employees representing 90+ nationalities foster a work environment rich in diversity, creativity, and collaboration. Our client innovates through a culture of experimentation and ownership, enhancing the ability for their customers to experience the world.

Our client believes travel allows people to enjoy, learn and experience more of the amazing world we live in. It brings individuals and cultures closer together, fostering empathy, understanding and happiness.
They are a skillful, driven and diverse team from across the globe, united by a passion to make an impact. Harnessing their innovative technologies and strong partnerships, they aim to make travel easy and rewarding for everyone.

The Team

The Full Stack Engineering Department builds our client's web and app products. They have several teams in front‑end focusing on different aspects of their products including accommodations, flights, payments, marketing, post‑booking services, and more. Our client's marketplace is the world. They build localized and optimized user experiences at scale on every major internet platform. These include their mobile websites, native apps, and desktop sites. They hire people from around the world who have a passion for using technology to create and implement the best user experiences. Their teams work on the full stack and build end‑to‑end systems including user interfaces, APIs, backend systems, and database systems. Their products are always evolving and under experimentation. They accomplish this by having an amazing degree of automation, CI/CD systems, and using a modularized approach. As they are data driven and measure their results, they continually innovate and improve their work. They are looking for the next great talent who strives to learn and grow and has a standard of excellence, strong sense of ownership, and great technical skills.

The Opportunity

Principal Software Engineer plays a pivotal role in our client's technology organization, collaborating closely with individual contributors and senior leadership. The Principal Engineers are heavily involved in the hiring and mentoring process and the go‑to experts who design and implement new systems and components. Our client is seeking individuals who are passionate about taking on greater responsibilities and driving significant architectural changes. It’s expected that the Principal Software Engineers will lead our client forward technically by adopting new technologies and setting higher standards.

The Responsibilities

• Maintain ownership and responsibility of mission critical systems.
• Be hands on – build high volume platforms using cutting‑edge technologies like React and GraphQL.
• Mentor and coach other software engineers.
• Be a major contributor to our agile and scrum practices.
• Design and lead crucial technical projects and initiatives cross teams and departments.
• Stay on the leading edge of technical know‑how, industry trends and drive technical innovations.

The Requirements

• 12+ years of experience building large‑scale web applications.
• Expertise in client‑side technologies & frameworks (JavaScript/TypeScript, React) and modern server‑side technologies (C#, .NET, Kotlin, Java).
• Bachelor’s degree with a preference for Computer Science degree; a master’s degree is preferred. Alternatively, a minimum of 10 years of experience in the relevant field is acceptable.
• Working experience with agile, analytics, A/B testing and/or feature flags, Continuous Delivery, Trunk‑based Development.
• You love new technologies and approaches and want to use the best tools available. We want people who can help us continually evolve our stack.
• Great communication and coordination skills.
• Excellent analytical thinking and problem‑solving skills.
• You have a good command of the English language.

The Nice‑to‑Have Requirements

• Knowledge in physical architecture at scale, building resilient, no single point of failures, highly available solutions.
• Knowledge in one or more of the following: NoSQL technologies (Cassandra, ScyllaDB, ElasticSearch, Redis, DynamoDB, etc), Queueing system experience (Kafka, RabbitMQ, SQS, Azure Service Bus, etc).
• Working Experience with Containers and Dockerization, also K8S is a plus.
• Knowledge and hands on experience in CI/CD solutions would be a plus.
• Strong experience in all aspects of client‑side performance optimization.
• Extremely proficient in modern coding and design practices. For example, Clean Code, SOLID principals, and TDD.
• Experience in multiple front‑end platforms including iOS, Android, Web, and API services.
• Have worked on an app or internet company that is at scale with large numbers of users and transactions per second.
• Have experience in a data driven company with experience analyzing and working with Big Data.
• Lead teams and greenfield projects solving large system problems.
• Worked on global projects serving world markets with distributed data centers and localization of the front end and data.

The Compensation and Benefits

• Competitive base salary, performance bonuses, and equity.
• Visa sponsorship and relocation support (flight tickets and accommodation).
• Health Insurance and paid time off days.
• Great company culture and international environment based in Bangkok, Thailand.
• Highly-skilled teammates and lots of opportunities for growth and development.