C# Time-Series Engineer

Senior Time-Series Engineer (Python or .NET) – Contract £550/day Hybrid (Watford) 4 Months Outside IR35 We’re supporting a technology-led organisation building high-throughput, event-driven systems operating at scale. They are looking for a Senior C# Engineer with proven time-series database experience to join a critical platform project. This is not a general backend role. Time-series experience is essential and will be tested in depth. What You’ll Be Doing • Building high-performance backend services in C# / .NET • Working directly with time-series databases (Azure Data Explorer / Kusto or InfluxDB) • Designing and optimising data ingestion pipelines for high-volume event data • Modelling data for efficient time-based querying • Implementing partitioning strategies, retention policies, and downsampling approaches • Improving query performance across large datasets • Working within event-driven systems using Azure Service Bus Core Requirements (Non-Negotiable) • Strong C# / .NET backend engineering experience • Proven, hands-on experience with at least one: • Azure Data Explorer (ADX / Kusto) • InfluxDB • Or a comparable time-series database • Demonstrable experience: • Designing time-series data models • Building ingestion pipelines • Optimising queries at scale • Working on production systems handling high data volumes Tech Environment • C# / .NET • Azure (Functions, AKS, Storage) • Azure Service Bus • ADX / Kusto or InfluxDB • Docker / Kubernetes Additional Context Candidates will be expected to talk through real implementations, including schema design, partitioning strategy, and query optimisation. This is a hands-on engineering role focused on performance and scalability.