AI Software Engineer hybrid job in Breda area

Epona; Breda; Hybrid; EUR 90,000 - 120,000; Full time

Job summary

Epona is seeking a senior engineer to own AI features across the full stack, including .NET services, Office add-ins for Excel and Outlook, the web UI, and Azure infrastructure.

You will work with Azure OpenAI, vector search, and semantic reasoning to deliver practical AI capabilities that meet real user needs while collaborating with sales and consultants to scope feasible use cases.

Qualifications

• 7+ years of professional development experience.
• Strong C#/.NET expertise for services, APIs and async workers.
• Proficient with TypeScript for front-end work.
• Hands-on with Azure OpenAI / Azure AI Foundry and prompt design.
• Experience shipping AI features used by real users.
• Familiarity with retrieval-augmented generation and vector search.
• Able to explain model capabilities to non-technical colleagues.

Responsibilities

• Develop AI features across the full stack: .NET services, Office add-ins, web UI, and Azure infra.
• Lead AI feature design, from concept to production delivery and cost considerations.
• Implement MS 365 integrations using Graph SDK and SharePoint CSOM.
• Prototype quickly, and validate feasibility with sales and consultants.
• Collaborate with teams to ensure reliable, traceable AI outputs.

Skills

7+ years

C#/.NET

TypeScript

Azure OpenAI

RAG

Prompt design

AI agents

Tools

Azure OpenAI

Graph SDK

SharePoint CSOM

Office Add-ins

Job description

Breda, Netherlands (hybrid) · Senior, 7+ years · Legal & professional services

Epona365 is a cloud-native platform built on Microsoft 365, used by legal and professional services firms across Europe. It integrates deeply with SharePoint, Exchange, Teams and Office, and runs asynchronous workers for OCR and metadata prediction, and semantic search.

We are looking for a senior engineer with strong AI knowledge. You will work across the full stack - .NET services, Office add-ins for Excel and Outlook, the web UI and Azure infrastructure - with AI features as your focus. We use AI coding agents throughout the development cycle, from analyzing stories to writing code and resolving review comments: developers here direct outcomes rather than type code.

What you will work on

Azure AI features - filing and metadata suggestions, semantic search over firm documents, agentic workflows on Azure AI Agents.

.NET microservices - APIs, workers and processing pipelines.

Microsoft 365 integrations - Graph SDK, SharePoint CSOM, Exchange Web Services.

You also help decide what we build: brainstorming new AI use cases with sales and consultants, prototyping quickly, and being honest about what is feasible today and what is not.

Must haves

7+ years of professional development experience.

Deep C# and .NET - services, APIs and asynchronous workers - plus solid TypeScript.

Experience shipping AI features in production: features real users depend on, not research or notebooks.

Hands-on with Azure OpenAI / Azure AI Foundry: prompt design, structured outputs, tool calling.

Retrieval-augmented generation: chunking and embedding documents, vector search, and grounding answers so they stay traceable to a source.

Judgement about when not to use a language model, and awareness of cost, latency and prompt injection.

Comfortable with AI coding agents: you can specify, review and correct machine-written code.

Able to explain to non-technical colleagues, in plain language, what a model can and cannot do.

Nice to haves

Semantic Kernel or Microsoft.Extensions.AI, and the Azure AI Agent Service.

Azure AI Search (vector and hybrid) and Azure AI Document Intelligence.

Model Context Protocol, or Microsoft 365 Copilot extensibility.

SharePoint development, or front-end single-page application experience.

Legal tech, document management or another regulated sector.

You are analytical and proactive, communicate clearly, and enjoy working in an international, multidisciplinary team.