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Senior Kotlin Backend Developer NL

ITProposal


Job Location:

Amsterdam - Netherlands

Monthly Salary: Not provided by the employer
Posted: 22 August 2026 (Yesterday)
Application Deadline: 19 November 2026
Vacancies: 1 Vacancy

Job Summary

Senior Kotlin Backend Developer
  • Location: Amsterdam Netherlands
  • Employment Type: Contract / Freelance
  • Start Date: Immediate
  • Duration: 6 Months
  • Experience: 10 Years
  • Domain: Digital / Backend Development
Role Overview
  • We are seeking an experienced Senior Kotlin Backend Developer to join an Agile Scrum team developing business-critical and strategic applications.
  • The successful candidate will contribute to the full software development lifecycle from architecture and development through to deployment and ongoing operational support.
  • This role follows a DevOps way of working with developers taking ownership of the reliability quality and availability of their applications.
  • Availability for 24/7 standby shifts is required.
Key Responsibilities
  • Develop and maintain backend applications using Kotlin and Spring Boot.
  • Design and implement reliable scalable and maintainable software solutions.
  • Analyse and design application and data architecture solutions.
  • Develop applications supporting business-critical and strategic delivery processes.
  • Write clean efficient and high-quality code.
  • Enforce coding standards and software quality practices.
  • Develop and maintain development best practices.
  • Participate in code reviews and contribute to continuous improvement.
  • Manage application deployments and releases.
  • Take end-to-end ownership of the teams code and applications.
  • Monitor application availability reliability and performance.
  • Participate in Agile Scrum ceremonies including:

    • Daily stand-ups
    • Backlog refinement
    • Sprint planning
    • Sprint retrospectives
  • Work collaboratively with other developers engineers Product Owners and technical stakeholders.
  • Participate in 24/7 standby/on-call support when required.
Essential Skills
  • 10 years of software development experience.
  • Strong Kotlin development experience.
  • Strong Spring Boot experience.
  • Backend development.
  • Microservices architecture.
  • Application and data architecture.
  • Software design and development.
  • Experience developing business-critical applications.
  • DevOps practices and application ownership.
  • Code quality and development best practices.
  • Deployment and release management.
  • Agile/Scrum methodology.
  • Willingness to participate in 24/7 standby/on-call support.
Desirable Skills
  • Experience with cloud-native application development.
  • CI/CD and automated deployment experience.
  • Containerization and Kubernetes.
  • Observability and application monitoring.
  • Experience working with large-scale enterprise applications.
  • Experience in highly available and business-critical environments.
Key Competencies
  • Strong software engineering and problem-solving skills.
  • Excellent teamwork and collaboration.
  • Strong sense of ownership and accountability.
  • Quality-focused approach to software development.
  • Ability to work effectively in Agile environments.
  • Strong analytical and architectural thinking.
  • Proactive approach to identifying and resolving technical issues.
  • Ability to work under pressure and support critical applications.
  • Excellent communication skills.
  • Continuous improvement mindset.

Apply now if you are a Senior Kotlin Backend Developer with strong Spring Boot and Microservices experience and are comfortable taking end-to-end ownership of business-critical applications in a DevOps environment.