Senior Software Engineer (C# / PostgreSQL / AI-Native)
zendbox
Paddock Wood, United Kingdom
2 days ago
Role details
Contract type
Permanent contract Employment type
Full-time (> 32 hours) Working hours
Regular working hours Languages
English Experience level
SeniorJob location
Paddock Wood, United Kingdom
Tech stack
.NET
API
Artificial Intelligence
Amazon Web Services (AWS)
Azure
C Sharp (Programming Language)
Cloud Computing
Databases
Cursor (Graphical User Interface Elements)
Github
PostgreSQL
Azure
Blazor
Large Language Models
Build Management
Production Code
Job description
- 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-per-token optimization.
- AI-First Tooling: Lead the team in adopting and optimizing AI-assisted development workflows (Claude Code, Cursor, etc.) to maintain our 10x velocity.
- Strategic Evolution: Collaborate on the long-term technical roadmap, identifying when to use fine-tuned Small Language Models (SLMs) vs. Frontier LLMs., * PostgreSQL Expert: You know how to design schemas, optimize queries, and leverage Postgres for high-performance applications.
- Architectural Thinker: You can look at a PoC and know exactly what it needs to survive 100x the current load., * Blazor: Experience with Blazor (Server or WebAssembly) for building real-time UIs.
- Azure ML: Any exposure to Azure Machine Learning services or deploying ML models into a production pipeline.
- AI Workflow: You already use Claude Code, Cursor, or GitHub Copilot in your daily flow.
Requirements
Do you have experience in PostgreSQL?