Booking NL

Software Engineer (For independent contractors)

Posted Sep 30, 2025
Project ID: 9758-1
Location
Amsterdam, NH
Hours/week
40 hrs/week
Timeline
3 months
Starts: Oct 1, 2025
Ends: Dec 31, 2025
Payrate range
40 - 85 €/hr

The role of a Junior Developer will focus on enhancing our internal Segmentation Service (Janeway) and Content Builder. Their primary responsibilities include integrating new data sources, enriching existing segmentation features, and improving our content building capabilities. This work will underpin more advanced audience targeting and richer content . By building out these services, we hope to reach our audiences more effectively and speed up the launch of new marketing campaigns.

A Junior Developer works on concrete topics as any other team members, but the delivery is slower than a Core Developer because of the lack of experience and expertise in some technologies and the lack of commercial awareness. The primary differences between a

Junior Developer and a Core Developer are both the expectations of velocity as well as the amount of effort required to produce a stand-alone solution.



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

  • Has sufficient knowledge to write readable and reusable code by applying standard patterns and using standard libraries

  • Has sufficient knowledge to refactor and simplify code by introducing design patterns when necessary

  • Has sufficient knowledge to ensure the quality of the application by following standard testing techniques and methods that adhere to the test strategy

  • Has sufficient knowledge to maintain data security, integrity and quality by effectively following company standards and best practices

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

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

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

  • Has basic knowledge to evaluate possible architecture solutions by taking into account cost, business requirements, technology requirements and emerging technologies

  • Has basic 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 basic 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 basic knowledge to meet business needs by designing solutions that meet current requirements and are adaptable for future enhancements

  • Has basic knowledge to address and resolve live production issues by mitigating the customer impact within SLA

  • Has basic knowledge to improve the overall reliability of systems by producing long term solutions through root cause analysis

  • Has basic knowledge to keep track of incidents by contributing to postmortem processes and logging live issues

  • Has sufficient knowledge to systematically identify patterns and underlying issues in complex situations, and to find solutions by applying logical and analytical thinking.

  • Has sufficient knowledge 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.

  • 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.

  • Has sufficient knowledge to deliver clear, well-structured, and meaningful information to a target audience by using suitable communication mediums and language tailored to the audience

  • Has sufficient knowledge to achieve mutually agreeable solutions by staying adaptable, communicating ideas in clear coherent language and practising active listening

  • Has sufficient knowledge 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

  • Is responsible to maintain data security, integrity and quality by effectively following company standards and best practices, guiding more junior members of the team in this topic



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