Software Engineer (Account Security)

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Employer: Booking Holdings
  • IT Software
  • Job type: full-time
    Job level: 1 - 5 years of experience
  • Updated at: 01.11.2023
    Remote work: On-site
    Short company description

    Booking Holdings Romania is a Center of Excellence based in Bucharest, Romania and was created to support the increasing business demands of the Booking Holdings Brands. The Center of Excellence provides access to specialized and highly skilled talent, leading industry best practices, and collaboration opportunities across all of our Brands.

    As part of our Booking Holdings Romania team, you will have the opportunity to be a part of the world’s leading provider of online travel, with a mission of making it easier for everyone to experience the world through six-primary consumer-facing brands:, Priceline, Agoda, KAYAK, OpenTable and


    Role description

    A software engineer owns the execution of technical elements in the 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 software engineer within Account Security helps build software to protect the world's largest travel platform against attacks to its account & authorization system.

    A 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. A software engineer is expected to work together with colleagues in other job roles to design, prioritize and implement technical tasks. Because the required technical skills and commercial knowledge can vary from one business unit to another, a software engineer can focus on multiple types of work from product features to infrastructure automation, frameworks, tooling or services.

    Building software applications

    Is able to build software applications by using relevant development languages and applying knowledge of systems, services and tools appropriate for the business area
    Is able to write readable and reusable code by applying standard patterns and using standard libraries
    Is able to refactor and simplify code by introducing design patterns when necessary
    Is able to ensure the quality of the application by following standard testing techniques and methods that adhere to the test strategy
    Is able to maintain data security, integrity and quality by effectively following company standards and best practices
    1+ years of Java development experience is preferred.
    Experience with frameworks such as; Spring, DropWizard or JEE is preferred
    Good grip on the JVM internals is a nice to have
    Experience with debugging and troubleshooting Java services is a nice to have
    Experience with other languages like Go, Python, Clojure etc is a plus
    Experience working with Distributed Service Oriented Architecture patterns
    Demonstrable experience with MySQL and PostgreSQL or similar relational databases
    Experience working with NoSQL databases like Cassandra, HBase etc.

    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

    Is able to address and resolve live production issues by mitigating the customer impact within SLA
    Is able to improve the overall reliability of systems by producing long term solutions through root cause analysis
    Is able to keep track of incidents by contributing to postmortem processes and logging live issues

    Architectural Guidance

    Has basic knowledge to advise product teams towards a technical solution that meets the functional, nonfunctional & architectural requirements by challenging the rationale for an application design and providing context in the wider architectural landscape
    Has basic knowledge to set a clear direction for a technical capability by evaluating and aligning the target architecture improvements, reframing architectural designs and decisions for varied stakeholder

    Software Systems Design

    Has sufficient knowledge to evaluate possible architecture solutions by taking into account cost, business requirements, technology requirements and emerging technologies
    Has sufficient knowledge to describe the implications of changing an existing system or adding a new system to a specific area, by having a broad, high-level understanding of the infrastructure and architecture of our systems
    Has sufficient knowledge to help grow the business and/or accelerate software development by applying engineering techniques (e.g. prototyping, spiking and vendor evaluation) and standards
    Has sufficient knowledge to meet business needs by designing solutions that meet current requirements and are adaptable for future enhancements

    Critical Thinking

    Is able to systematically identify patterns and underlying issues in complex situations, and to find solutions by applying logical and analytical thinking.
    Is able to constructively evaluate and develop ideas, plans and solutions by reviewing them, objectively taking into account external knowledge, initiating 'SMART' improvements and articulating their rationale.

    Continuous Quality and Process Improvement

    Has sufficient knowledge to identify opportunities for process, system and structural improvements (i.e performance gains) by examining and evaluating current process flows, methods and standards.
    Has sufficient knowledge to design and implement relevant improvements by defining adapted/new process flows, standards, and practices that enable business performance.

    Effective Communication

    Is responsible to deliver clear, well-structured, and meaningful information to a target audience by using suitable communication mediums and language tailored to the audience
    Is responsible to achieve mutually agreeable solutions by staying adaptable, communicating ideas in clear coherent language and practising active listening
    Is responsible to ask relevant (follow-up) questions to properly engage with the speaker and really understand what they are saying, by applying listening and reflection techniques

    Role Qualifications and Requirements

    3+ years of platform engineering experience
    Bachelor’s degree in Computer Science, Computer or Electrical Engineering, Mathematics, or a related field or 3-5 years of progressively responsible experience in the specialty as equivalent
    Strong programming skills
    Strong business and technical vision
    A deep understanding of software development in a team, and a track record of hands-on developing and shipping software
    Strong interpersonal skills
    Strong work ethic; self-directed and resourceful
    Solution oriented and result driven
    Proactive, flexible and capable of working independently as well as working in a team
    Excellent verbal and written communication skills
    Analytical skills and data-driven mindset


    Key Job Responsibilities and Duties

    Rapidly develop next-generation scalable, flexible, and high-performance systems
    Represent values, both within the company and in the external community
    Plan for reliability by designing systems to work across our multiple data centers
    Advocate for a collaborative working environment – turn “my ideas” into “our ideas”
    Solve issues with on-site and internal systems, prioritizing based on customer impact
    Act as an intermediary for problems, with both technical and non-technical audiences
    Write readable and reusable code by applying standard patterns and using standard libraries
    Participating in code and design reviews to maintain our high development standards
    Apply good engineering and security practices for the systems you build
    Owning the end to end software development lifecycle like automated software testing, continuous deployment, release management.
    Contribute to the growth of through interviewing, on-boarding, or other recruitment efforts

    Other info

    Benefits & Perks

    Contributing to a high scale, complex, world renowned product and seeing real-time impact of your work on millions of travelers worldwide
    Working in a fast-paced and performance driven culture
    Technical, behavioral and interpersonal competence advancement via on-the-job opportunities, experimental projects, hackathons, conferences and active community participation
    Competitive compensation and benefits package
    Vast amounts of data to validate your ideas and the opportunity to experiment with real users

    Booking Holdings is proud to be an equal opportunity workplace and is an affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We strive to move well beyond traditional equal opportunity and work to create an environment that allows everyone to thrive.


    • Annual bonus
    • Medical subscription
    • Medical insurance
    • Trainings
    • Courses
    • Certifications
    • Bookster subscription
    • Remote work allowance / Utilities reimbursement
    • Payment / Compensation for extra hours
    • Extra days off
    • Flexible work schedule
    • Short Fridays
    • Parties / company events
    • Laptop
    • Mobile phone
    • Parking space
    • Fun / Relax Area
    • Meal vouchers