About the role

We are looking for a Senior Backend Engineer to join an existing engineering team working on large-scale digital platforms for one of the world’s leading toy manufacturers.

• The role is primarily focused on backend development, with a strong emphasis on maintaining and improving a set of APIs written in C#/.NET, while also contributing to services developed in Node.js / TypeScript. The platform runs entirely on AWS and relies on REST APIs, distributed messaging, and cloud-native services.
• A key aspect of the role will also involve improving observability, helping implement monitoring, logging, and alerting capabilities across the system.

Responsibilities

• Maintain, debug, refactor, and modernize existing C#/.NET APIs
• Develop and maintain backend services using Node.js and TypeScript
• Design, build, and maintain RESTful APIs
• Work with AWS-based infrastructure and cloud-native services
• Implement and improve monitoring, logging, and alerting
• Work with message queues and event-driven architectures
• Investigate and understand existing and legacy codebases
• Perform code reviews and collaborate closely with other engineers
• Contribute to improving technical documentation
• Participate in Agile/Scrum ceremonies and sprint delivery

Requirements

• Strong experience with C# / .NET, including maintaining and improving existing APIs
• Solid experience with Node.js and TypeScript
• Experience building and maintaining REST APIs
• Hands-on experience working with AWS, including services such as Lambda, Fargate, and S3
• Experience with Infrastructure as Code, preferably AWS CDK
• Familiarity with CloudWatch for logging and monitoring
• Experience working with message queues or event-driven systems (e.g., Kafka, RabbitMQ, Pulsar, SQS)
• Understanding of distributed system patterns
• Experience implementing or improving observability, including monitoring, logging, and alerting
• Familiarity with observability platforms such as Datadog, Grafana, or similar
• Ability to work with existing or legacy codebases and understand system behavior from the code
• Strong code review and collaboration skills
• Experience working in Agile/Scrum teams

Nice to have

• Experience with React or Next.js
• Experience using AI-assisted development tools (e.g., GitHub Copilot or similar)