Freelance Software Engineer

Job reference no: 4080004
Role type: Contract
Salary: Negotiable €
Location: Amsterdam, North Holland, Netherlands

We are looking for an experienced Software Engineer II to join a high-performing backend engineering organization focused on building and evolving a large-scale attractions and reservations platform. The team is currently working on a strategic migration initiative, platform modernization, and prototyping new service architectures to support future growth.

You will join one of the core backend teams responsible for catalogue, reservations, or connectivity services and contribute to the design, development, and operation of highly scalable distributed systems.

Responsibilities

Build and maintain scalable backend applications using Java
Drive migration initiatives from on-premises environments to AWS
Design and implement cloud-native solutions leveraging AWS managed services
Develop reliable and maintainable services with strong testing practices
Participate in system design discussions and architectural decisions
Monitor production systems and improve operational excellence
Own services end-to-end, including deployment, monitoring, and incident resolution
Collaborate with Product Managers, Engineers, and stakeholders to deliver business value
Continuously improve system reliability, performance, and maintainability
Contribute to technical documentation, operational procedures, and best practices

Required Skills

5+ years of software engineering experience
Strong Java development experience
Extensive AWS experience
Proven experience with on-premises to AWS cloud migrations
Hands-on experience with Kafka
Hands-on experience with Cassandra
Experience with AWS managed services such as DynamoDB, RDS, and Lambda
Strong understanding of monitoring, alerting, observability, and operational excellence
System design experience
Excellent communication skills
High accountability and ability to work autonomously

Nice to Have

TypeScript or JavaScript experience
Experience within Attractions, Ticketing, Travel, Reservations, or Marketplace environments
Greenfield architecture and product design experience

Details

Start: Asap
Duration: 6 months (+)
Location: Amsterdam, Hybrid

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