Why Senior C# .NET Developers are like apples.

Job summary

The role involves owning the full lifecycle of AI features, including designing scalable C# .NET services and architecting RAG pipelines on AWS. The developer will build robust backend services and mentor other engineers on AI engineering patterns.

Job details

Apples float because they're about 25% air. You'll be floating on air too once you see what we're building. There are 2 versions of this ad. Below is the anodyne version. Bonus points if you can find the more analeptic version. And provide proof of your quest. Good luck! The Senior C# .NET Developer will work for a fast-paced SaaS scaleup. The Senior C# .NET Developer will enjoy hybrid working (3+2). The Senior C# .NET Developer will have prior experience at a high-growth SaaS startup or scaleup. The Senior C# .NET Developer will own the full lifecycle of AI features as we scale. The Senior C# .NET Developer will work on everything from retrieval-augmented generation to agentic workflows. The Senior C# .NET Developer will leverage Claude Code and other AI-assisted development tools to ship faster. The Senior C# .NET Developer will be comfortable designing scalable C# .NET services on AWS. The Senior C# .NET Developer will architect RAG pipelines and orchestrate multi-step agentic workflows. The Senior C# .NET Developer will deploy, monitor and optimise AI infrastructure on AWS e.g. Lambda, ECS/EKS, S3, Bedrock, RDS. The Senior C# .NET Developer will work closely with our Product, Data and Platform teams. The Senior C# .NET Developer will turn gnarly business problems into clean, scalable AI-powered solutions. The Senior C# .NET Developer will design, build, and scale backend services that will power hundreds of AI-driven features. The Senior C# .NET Developer will work on data ingestion and chunking strategies to vector search and retrieval optimisation. The Senior C# .NET Developer will showcase their systems design skills. The Senior C# .NET Developer will help shape how AI gets woven into our core product from the ground up. The Senior C# .NET Developer will mentor other engineers on AI engineering patterns and backend architecture. The Senior C# .NET Developer will turn cutting-edge LLM capabilities into robust, production-grade systems. The Senior C# .NET Developer will build robust, scalable, low-latency, fault-tolerant and highly performant systems. The Senior C# .NET Developer will establish best practices for LLM observability, prompt/version management, cost control and reliability at scale.

What you’ll do

The role involves owning the full lifecycle of AI features, including designing scalable C# .NET services and architecting RAG pipelines on AWS. The developer will build robust backend services and mentor other engineers on AI engineering patterns.

Requirements

Candidates must have prior experience at a high-growth SaaS startup or scaleup and be proficient in C# .NET and AWS infrastructure. Expertise in LLM capabilities, data ingestion strategies, and scalable system design is required.

Listed skills

• C++ · Preferred
• .NET · Preferred
• Amazon Web Services · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• C#
• .NET
• AWS
• AI Engineering
• RAG Pipelines
• Agentic Workflows
• System Design
• LLM Observability
• Backend Architecture
• Vector Search
• Claude Code
• SaaS Scaleup Experience

Job areas

• Software
• Technology
• Engineering
• Data & Analytics
• Consulting