Senior Software Engineer

A Senior Software Engineer owns the execution of technical elements in the Booking.com tech stack, products and processes. They are responsible for the implementation of technical solutions based on business requirements, they can estimate the effort and impact of the items they work on, and show a high quality of craft in what they deliver. A Senior Software Engineer understands the quality of test automation is as important as the production code and spends time refactoring both to ensure ease of change enabling a sustainable pace of development. Software Engineer II are expected to work together with colleagues in other job roles to design, prioritise and implement technical tasks. Because the required technical skills and commercial knowledge can vary from one business unit to another, a Senior Software Engineer can focus on multiple types of work from product features to infrastructure automation, frameworks, tooling or services.

About the team

The Global Traffic Distribution (GTD) team owns Booking.com’s traffic management stack, including CDN, ADN, Edge Compute, DLB (Booking Distributed Load Balancer), DNS and the Global Redirect Service.

GTD ensures that customers and partners can reliably and securely reach our applications with low latency, across both on-prem and cloud environments. The team builds and operates self-service tooling, automation and documentation that enable product teams to expose and scale their services safely, while continuously improving performance, resilience and developer experience. The products owned by the team are spread across public cloud (AWS) and on-premise, leveraging a mix of managed AWS services, Open-Source Software (OSS) and internally developed tools and services.

Key Responsibilities & Skills

Building software applications

• Is responsible to build software applications by using relevant development languages and applying knowledge of systems, services and tools appropriate for the business area

• Is responsible to write readable and reusable code by applying standard patterns and using standard libraries

• Is responsible to refactor and simplify code by introducing design patterns when necessary

• Is responsible to ensure the quality of the application by following standard testing techniques and methods that adhere to the test strategy

• Is responsible to maintain data security, integrity and quality by effectively following company standards and best practices

End to End System Ownership

• Has sufficient knowledge to own a service end to end by actively monitoring application health and performance, setting and monitoring relevant metrics and act accordingly when violated

• Has sufficient knowledge to reduce business continuity risks and bus factor by applying state-of-the-art practices and tools, and writing the appropriate documentation such as runbooks and OpDocs

• Has sufficient knowledge to reduce risk and obtain customer feedback by using continuous delivery and experimentation frameworks

• Has sufficient knowledge to independently manage an application or service by working through deployment and operations in production

Technical Incident Management

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