Booking.com is seeking a Software Engineer I - Backend in City of London, United Kingdom (Hybrid) to develop, optimize, and scale core services within the RegTech team of the Fintech Business Unit. You will work independently and with distributed teams to own microservices, implement high‑performance systems, and address issues based on customer impact while promoting development best practices. You will help colleagues understand regulatory processes and provide enhanced tooling, analytics, and reporting to support compliance officers, partners, and customers. You will also contribute to the company’s growth through interviewing and onboarding activities. Qualifications include a minimum of 2 years of software development experience with proficiency in two or more server-side languages (Java is required); hands-on experience with microservices; building scalable distributed systems and batch processing pipelines with strong data integrity; experience with data stores such as MySQL, Hadoop, and Cassandra; AWS experience (DynamoDB, RDS, Step Functions, EC2, Kinesis) is a plus; familiarity with unit, integration, and end-to-end testing; ability to define and uphold SLOs/KPIs and participate in architecture reviews; knowledge of regulatory/compliance policies is a plus; payments or FinTech experience is a plus; security considerations for authentication and authorization; experience delivering products that impact a large customer base; and experience collaborating with geographically dispersed teams. The role offers a comprehensive benefits package and a hybrid work arrangeme

Booking.com is seeking a Software Engineer I - Backend in City of London, United Kingdom (Hybrid) to develop, optimize, and scale core services within the RegTech team of the Fintech Business Unit. You will work independently and with distributed teams to own microservices, implement high‑performance systems, and address issues based on customer impact while promoting development best practices. You will help colleagues understand regulatory processes and provide enhanced tooling, analytics, and reporting to support compliance officers, partners, and customers. You will also contribute to the company’s growth through interviewing and onboarding activities. Qualifications include a minimum of 2 years of software development experience with proficiency in two or more server-side languages (Java is required); hands-on experience with microservices; building scalable distributed systems and batch processing pipelines with strong data integrity; experience with data stores such as MySQL, Hadoop, and Cassandra; AWS experience (DynamoDB, RDS, Step Functions, EC2, Kinesis) is a plus; familiarity with unit, integration, and end-to-end testing; ability to define and uphold SLOs/KPIs and participate in architecture reviews; knowledge of regulatory/compliance policies is a plus; payments or FinTech experience is a plus; security considerations for authentication and authorization; experience delivering products that impact a large customer base; and experience collaborating with geographically dispersed teams. The role offers a comprehensive benefits package and a hybrid work arrangeme