AI-Driven .NET Backend Engineer (Agentic Platform)

b3consultingpoland; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Health benefits

Sports benefits

Speed Coaching

Team events and meetups

Development opportunities

Job summary

b3consultingpoland is seeking an Agentic .NET Backend Developer to advance autonomous AI agent workflows. You will craft precise specs and prompts, evaluate AI-driven code, and shape secure, multi-tenant architectures. The role emphasizes collaboration with cross-functional teams in a fast-growing, international environment.

Based in Poland, you will focus on .NET/C#, PostgreSQL, MCP integrations, and AI tooling orchestration while ensuring high standards in performance, security, and design.

Qualifications

• Senior Backend foundation in .NET/C# and PostgreSQL, with a shift toward AI-assisted development.
• Practical experience with MCP implementations and integrations.
• Hands-on experience orchestrating AI developer tools, prompts, and repository contexts.
• Ability to translate complex business needs into precise spec prompts and testing criteria.
• Strong architectural judgment to evaluate code quality and system design.

Responsibilities

• Drive core data platform features by steering autonomous AI agent workflows (such as Claude Code) rather than writing code manually.
• Author clear, machine-executable specifications and prompts that serve as the source of truth for AI execution.
• Build and refine agent execution systems by integrating deterministic tooling, sandboxes, and MCP servers.
• Design automated evaluation suites, synthetic test environments, and quality gates to validate AI-generated code.
• Audit generated code for performance, security, memory efficiency, and multi-tenant isolation.

Skills

.NET/C# backend

PostgreSQL

MCP

AI tool orchestration

Spec prompts

Architectural judgement

English fluency

Tools

Kafka

Debezium

MassTransit

RabbitMQ

Azure

Docker

Kubernetes

Job description

b3consultingpoland is seeking an Agentic .NET Backend Developer to advance autonomous AI agent workflows. You will craft precise specs and prompts, evaluate AI-driven code, and shape secure, multi-tenant architectures. The role emphasizes collaboration with cross-functional teams in a fast-growing, international environment.

Based in Poland, you will focus on .NET/C#, PostgreSQL, MCP integrations, and AI tooling orchestration while ensuring high standards in performance, security, and design.