Senior Backend Developer, integration and middleware

About Us ALLPS is putting together a team of senior consultants for a framework agreement with a major Swedish consumer-facing company in a regulated industry, headquartered in Stockholm. The framework runs from February 2027 for two years, with options to extend up to four years. Assignments are ordered as needed and are mostly onsite or hybrid at the client's office in central Stockholm (Slussen) or in Visby; some assignments can be fully remote. Help move a high-transaction, business-critical backend from data centre to cloud, step by step, while it keeps running. Key responsiblities

• Adapt C#/.NET or C++ modules for container-based operation on GCP (or equivalent)
• Integrate with IAM
• Build automated build-test-deploy pipelines
• Design for high availability and correct transaction handling
• Add logging, metrics and tracing
• Take part in incident handling.

Required Skills And Experience

• Backend and integration development in business-critical systems

-

• C#/.NET or C++
• API design, integration patterns, event-driven architecture
• Containers, CI/CD and cloud
• Observability and production troubleshooting
• Experience with gradual cloud migration.

Nice to have

• Regulated or certified environments

What We Offer

• Long-term assignments at a fixed rate per role, agreed with you up front
• Freelance (via your own company) or employment through ALLPS
• A recruiting process that respects your time: one short AI interview, then a personal call