Senior Backend Developer (.NET)

Tundraspring employs 8,000 people across engineering hubs in Toronto and three other locations, building ERP software for mid-market manufacturers. Public sector agencies, utilities and large health systems licence our asset management platform under multi-year contracts. Code review is required on every pull request, and nobody merges their own changes.

Job summary

Tundraspring is hiring a Senior Backend Developer (.NET) to work remotely from Italy. This hire will help us split a large monolith into a handful of well-defined services without breaking anything customers rely on. The company is based in Toronto, Canada. Our team works from several countries. You will join as an independent contractor on a long-term agreement. Payment is monthly in USD. Expect to work a schedule that overlaps with US Eastern business hours until about noon ET.

Day to day

• Review code for correctness, performance and failure handling.
• Secure endpoints with OAuth 2.0, JWT validation and proper input checks.
• Containerize services with Docker and deploy them to Kubernetes or ECS.
• Implement background jobs and event consumers using Kafka, SQS or RabbitMQ.
• Write integration and contract tests so API changes don't break consumers.
• Instrument services with metrics, structured logs and OpenTelemetry traces.

Required qualifications

• 7+ years of backend development experience in a production environment.
• Proficiency in at least one of Go, Java, Kotlin, Python, C# or Node.js.
• Experience designing and versioning HTTP APIs.
• Understanding of concurrency, transactions, idempotency and retries.
• Working knowledge of message queues or streaming platforms.
• Clear written communication, including design docs.

Nice to have

• Prior work breaking up a monolith.
• Terraform or Pulumi.

Pay: €66,000 to €84,000 per year

Compensation and benefits

• Annual rate review.
• Long-term engagement.
• Monthly payments via wire transfer or Wise.

Duration: 6 months. Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Tundraspring.