Senior Fullstack (.NET/Python) Engineer

Fromjimmy; Polska; Hybrid; PLN 309,000 - 485,000; Full time

Job summary

Fromjimmy is seeking a Senior Fullstack Engineer (.NET/Python) for a consultancy serving banks and insurers on AI, automation and analytics, with focus on Anti-Financial Crime. You will work remotely within the EU on a long-term contract for a Dutch insurance client, building middleware APIs, data pipelines and enterprise integrations in a fast-paced delivery environment.

Required skills include C# / .NET, Python, Docker, Azure DevOps, CI/CD and REST/messaging integration, plus Kubernetes and

Qualifications

• Experience with .NET/C# and Python in a microservices environment.
• Experience deploying containerized apps with Docker and CI/CD pipelines.
• Familiarity with enterprise integrations (REST, messaging queues).
• Strong analytical and problem-solving skills with proactive attitude.

Responsibilities

• Build the middleware APIs between Salesforce / API management, Databricks or SQL databases, and legacy cores such as AS400.
• Build and harden the Agentic CDD services: asynchronous client-check API with callback, retries instead of dropped messages, and safe write-back with an on/off switch.
• Extend the Python capability modules and the connector framework.
• Package and deploy as containers or Databricks bundles through the CI/CD pipeline.
• Write unit and integration tests, and fix issues found in testing and in production.

Skills

C# / .NET

Python

Docker

Azure DevOps

CI/CD

Git

REST APIs

Messaging / Queues

Tools

Databricks Asset Bundles (DAB)

Kubernetes

LangGraph

Job description

We are looking for a Senior Fullstack Engineer (.NET/Python) for our client, a consultancy that helps banks and insurers transform their operations through AI, automation, and advanced analytics, with a strong focus on Anti-Financial Crime (fraud prevention, AML, KYC) and enterprise AI platforms. You will join their delivery for a Dutch insurance client.

This is a long-term remote-first contract position for candidates based in the EU.

Responsibilities

• Build the middleware APIs between Salesforce / API management, Databricks or SQL databases, and legacy cores such as AS400.

• Build and harden the Agentic CDD services: asynchronous client-check API with callback, retries instead of dropped messages, and safe write-back with an on/off switch.

• Extend the Python capability modules and the connector framework.

• Package and deploy as containers or Databricks bundles through the CI/CD pipeline.

• Write unit and integration tests, and fix issues found in testing and in production.

Work Conditions

• Start Date: ASAP

• Location: Remote within the EU

• Long-term contract-based role: until July 2027 with possible extension

• Contract with EU LCC

Core Technical Skills

• C# / .NET (ASP.NET Core Web APIs)

• Python (FastAPI or similar)

• Containerized packaging (Docker), Azure DevOps, CI/CD, Git

• Integration with enterprise systems (REST, messaging/queues)

Soft Skills

• Strong analytical and problem-solving skills, with the ability to diagnose and resolve complex issues under pressure.

• Excellent communication skills, capable of explaining technical concepts to both technical and non-technical stakeholders.

• Ownership mindset – the ability to work independently and as part of a team while taking full responsibility for assigned tasks.

• Proactive attitude – the ability to elevate issues early, follow up on blockers, and support teammates when needed.

• Constructive feedback approach – ability to receive and provide feedback in a way that improves overall team performance.

Preferred Experience

• Databricks Asset Bundles (DAB)

• Kubernetes

• LangGraph or other LLM frameworks

• Insurance or banking experience