• Deep knowledge of Java and the Spring Boot ecosystem on the backend, combined with strong front-end expertise in JavaScript, TypeScript, and React.
• Strong understanding of distributed systems design, including microservices, service-oriented architectures, and event-driven architectures that power modern web applications.
• Solid grounding in cloud-native engineering on AWS, including load balancing, API gateways, resilience patterns, observability, and container orchestration.
• Knowledge of data and event-streaming technologies such as Kafka Streams, Cassandra, DynamoDB, Redis, and relational databases (MySQL, PostgreSQL), as well as API design patterns (REST, GraphQL) that bridge front-end and back-end systems.
• Familiarity with infrastructure-as-code and container platforms, including Docker, Kubernetes, Serverless, and Terraform, alongside modern front-end build and tooling ecosystems (e.g., Node.js, bundlers, package managers).
• Understanding of CI/CD, observability, and monitoring toolchains such as GitLab, Harness, Grafana, and OpenTelemetry, applied across both server-side and client-side stacks.
• Awareness of security principles, secure coding practices, and common threat models in large-scale systems, including front-end concerns such as XSS, CSRF, and safe handling of user data.
• Knowledge of modern AI-assisted development tools (e.g., Claude Code, Codex) and how to apply them effectively in a professional full-stack engineering workflow.

• Ability to design, build, and operate scalable, fault-tolerant, and highly available full-stack applications in production, spanning React-based front ends and JVM-based back ends.
• Strong software craftsmanship across the stack, including clean code, component design, testing, refactoring, and code review skills.
• Proficiency in troubleshooting complex production issues across front-end, application, data, and infrastructure layers, including browser compatibility and performance problems.
• Ability to translate business and product requirements into robust technical designs and make sound trade-offs on user experience, performance, cost, and complexity.
• Effective written and verbal communication skills in English, with the ability to explain technical concepts to both technical and non-technical audiences.
• Skill in mentoring and coaching engineers across front-end and back-end disciplines, including guidance on effective use of AI-assisted development practices.
• Ability to lead technical initiatives and influence stakeholders across teams without direct authority.

• Ability to take end-to-end ownership of complex production systems, from front-end experience through back-end services and long-term operation.
• Ability to work autonomously in a fast-paced, performance-driven environment while managing competing priorities.
• Strong analytical and problem-solving ability, with a data-informed approach to technical and product decisions.
• Ability to collaborate effectively in a hybrid, cross-functional, and multicultural environment with designers, product managers, and back-end engineers.
• Ability to adapt quickly to new technologies, tools, and evolving architectural patterns across the full stack.
• Commitment to continuous learning and to raising the engineering bar within the team and wider organization.

• Designs and evolves scalable, resilient full-stack systems, spanning React-based user interfaces and distributed backend services, applying sound architectural principles and technical trade-offs, in order to deliver fast, reliable, and delightful experiences to millions of users.
• Owns the full software lifecycle of end-to-end product features, from UX and API design through implementation, deployment, monitoring, and production support, following engineering best practices and operational standards, in order to deliver reliable, production-ready software across the stack.
• Improves system reliability and end-user performance across front-end and backend layers through observability, automation, and operational excellence, aligned with cloud-native and SRE practices, in order to reduce incidents, minimize mean time to recovery, and optimize core user-facing metrics.
• Conducts code reviews and technical design discussions with engineering peers on both client-side and server-side work, in line with internal engineering standards and guidelines, in order to raise the engineering bar and ensure consistent code quality across teams.
• Mentors and coaches fellow engineers on full-stack development, modern web practices, and AI-assisted engineering, guided by team development plans and industry best practices, in order to accelerate their technical growth and strengthen team capability across the stack.
• Partners with designers, product managers, back-end engineers, and architects on cross-team initiatives, influencing technical and product decisions within the framework of the Sustainable Team Principles, in order to drive alignment and successful delivery of strategic, user-facing projects.

• Health insurance
• Prepaid medical subscription (Regina Maria)
• Life insurance
• Meal vouchers
• Learning wallet
• Travel benefit
• Annual vacation leave of 25 business days, pro rata with the working period
• Birthday day off
• Summer break (short Fridays during summer)
• Work from Abroad program (up to 20 days/year in EU)
• Floating days off
• 2 Volunteer days/ year
• Home office one-time bonus
• Bookster
• Linkedin learning platform
• Headspace
• Employee discounts (travel, gym, dental, vision)

Booking Holdings Center of Excellence is part of Booking Holdings, the world's leading provider of online travel and related services, with a rich heritage of digital innovation. The Center provides access to specialized and highly skilled talent, supports projects powered by new and emerging technologies, leverages industry best practices, and fosters collaboration opportunities across all of the Booking Holdings brands, including Booking.com, Priceline, Agoda, KAYAK and OpenTable.

If you are interested to find out more about the Booking Holdings Center of Excellence visit our website: www.bookingholdings-coe.com.

Booking Holdings (NASDAQ: BKNG) is the world’s leading provider of online travel and related services, provided to consumers and local partners in more than 220 countries and territories through five primary consumer facing brands: Booking.com, Priceline, Agoda, KAYAK and OpenTable. The mission of Booking Holdings is to make it easier for everyone to experience the world.