Senior-Principle Backend Engineer, Go (Contractor) | C# to Go Large-Scale Migration, AWS | AI Agentic Workflows expert | B2B, 400-450/day Euros | Fully Remote (EU) | 6-Month initial Contract

Senior-Principle Backend Engineer, Go (Contractor) | C# to Go Large-Scale Migration, AWS | AI Agentic Workflows expert | B2B, 400-450/day Euros | Fully Remote (EU) | 6-Month initial ContractWe’re hiring multiple Senior Go Backend Engineers (contractors) to join a large-scale public sector transformation programme delivered by a highly regarded product consultancy.This work is focused on moving critical systems away from a legacy C# ecosystem into a modern, scalable, cloud-native architecture.You’ll be joining cross-functional teams responsible for building resilient backend services that support high-impact, user-facing products used at national scale.This is a 6-month initial contract, ideal for engineers who enjoy working on meaningful systems, solving complex migration challenges, and delivering production-grade backend services, fast.The Role | Senior-Principle Backend Engineer, Go (Contractor) | C# to Go Large-Scale Migration, AWS | AI Agentic Workflows expert | B2B, 400-450/day Euros | Fully Remote (EU) | 6-Month initial ContractThis is a hands-on backend engineering role with a strong focus on system design, scalability, and delivery.You’ll be expected to:Build and scale backend services using Go within a cloud-native AWS environmentContribute to the migration of legacy C# systems into modern distributed architecturesDesign and develop APIs and event-driven systemsWork closely with product, design, and other engineers in cross-functional teamsApply modern engineering practices including TDD, CI/CD, and Infrastructure as CodeWrite clean, maintainable, and well-tested production codeContribute to architectural decisions balancing performance, scalability, and delivery timelinesSupport continuous improvement through code reviews, pairing, and knowledge sharingThis role suits engineers who enjoy working on real-world systems at scale and are comfortable navigating complexity in modernisation programmes.Technical Requirements | Senior-Principle Backend Engineer, Go (Contractor) | C# to Go Large-Scale Migration, AWS | AI Agentic Workflows expert | B2B, 400-450/day Euros | Fully Remote (EU) | 6-Month initial ContractStrong, recent experience with:Backend development using Go (Golang) in production environmentsDesigning and building scalable APIs and distributed systemsAWS cloud services (e.g. Lambda, ECS/EKS, S3, RDS)SQL and data modelling (relational databases)Working within microservices or event-driven architecturesCI/CD pipelines and modern delivery practicesInfrastructure as Code (e.g. Terraform or similar)Test-driven development and automated testing strategiesObservability, performance tuning, and system reliabilityNice to HaveExperience migrating legacy systems (e.g. C#/.NET to Go)Exposure to containerisation (Docker, Kubernetes)Experience in public sector or highly regulated environmentsFamiliarity with event streaming (Kafka, SNS/SQS, etc.)Why This Contract Stands Out | Senior-Principle Backend Engineer, Go (Contractor) | C# to Go Large-Scale Migration, AWS | AI Agentic Workflows expert | B2B, 400-450/day Euros | Fully Remote (EU) | 6-Month initial Contract400-450 per dayb2b via Deel for paymentsFully remote within the EULong-term programme with strong likelihood of extensionOpportunity to work on systems with real national impactModern tech environment with strong engineering practicesProduct-led teams with a pragmatic delivery cultureThis isn’t a greenfield fantasy, it’s a high-impact backend role focused on modernising critical systems and delivering software that genuinely matters at scale.If interested, in the please apply here and WE will back get to you if it's a good fit for the client. :)