Full-Stack Engineer: Data-Driven Apps on Azure

Psi CRO; Województwo mazowieckie; On-site; PLN 180,000 - 240,000; Full time

Job summary

Milestone One seeks a Full-Stack Developer to design, build, and maintain internal platforms and integrations. The stack centers on a React/TypeScript frontend with a .NET/C# backend, hosted on Azure and integrated with Microsoft 365.

You will work in a small team, prioritizing secure, data-driven delivery and clear technical documentation. You will model data in Azure SQL, create secure REST APIs, and connect front-end components to internal systems.

Qualifications

• Experience building web apps with React/TypeScript.
• Backend experience in C#/NET.
• Data modeling and Azure SQL experience.
• Fluent English, written and spoken.
• Comfort working in regulated environments.

Responsibilities

• Design and document data models for central data platform (Azure SQL).
• Develop secure REST APIs and backend services (.NET/C#) with proper access checks.
• Build React/TypeScript front ends integrated with intranet and design system.
• Create integrations between internal systems and third-party services (APIs, webhooks).
• Collaborate with stakeholders to shape requirements into solutions.
• Write automated tests (Playwright) and support acceptance testing.

Skills

React/TypeScript

C#/NET

Azure

SQL

REST API design

GitHub Actions CI/CD

Tools

Azure App Service

Azure Functions

Azure SQL

Key Vault

OpenTofu

Playwright

GitHub

Job description

Milestone One seeks a Full-Stack Developer to design, build, and maintain internal platforms and integrations. The stack centers on a React/TypeScript frontend with a .NET/C# backend, hosted on Azure and integrated with Microsoft 365.

You will work in a small team, prioritizing secure, data-driven delivery and clear technical documentation. You will model data in Azure SQL, create secure REST APIs, and connect front-end components to internal systems.