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🥝 Senior Software Engineer (C# / PostgreSQL / AI-Native)

Zendbox | eCommerce Fulfilment Specialist | whetsted, United-Kingdom | Posted May 29, 2026

Job Description

We have a working AI Proof of Concept (PoC) that proves our vision; now we need the engine that powers the product at scale. As our Senior Software Engineer , you will be the lead architect and primary builder of our production-grade, AI-first .NET platform.

What You'll Do

  • Productionize AI Workflows: Transform raw AI prompts and experimental logic into resilient production code using .NET 10/C# 14
  • Architect Agentic Systems: Design and build the Agent Loops (Planning → Execution → Observation) that allow our AI to interact reliably with our internal databases and external APIs
  • Build for Reliability: Implement Evals and Guardrails to manage the non-deterministic nature of LLMs, ensuring outputs are safe, accurate, and consistent for our users
  • Cloud Infrastructure: Partner with the Head of Tech to design and deploy the Azure/AWS infrastructure required to support high-concurrency AI workloads, focusing on latency and cost-...

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