Full-Stack Developer: React/TypeScript + .NET on Azure

Psi CRO; Lisboa; On-site; EUR 60,000 - 90,000; Full time

Job summary

Milestone One is seeking a Full-Stack Developer to design, build, and maintain internal platforms, applications, and integrations. The role features a React/TypeScript front end, an API layer, and a database backend hosted on Azure with Microsoft 365 integration.

You'll work in a small team with AI coding agents, focused on secure, tested, and documented delivery. Responsibilities span data modeling, API design, UI, integrations, and infrastructure as code.

Qualifications

• Proficient in building web applications with React/TypeScript and a backend language such as C# / .NET.
• Strong SQL skills including schema design and data modelling.
• Experience designing secure REST APIs and implementing authentication/authorization.
• Familiar with Git workflows, CI/CD pipelines, and code reviews.
• Ability to operate in a regulated environment with change control and audit trails.

Responsibilities

• Design and document data models and databases (Azure SQL) for central data platform and reporting.
• Develop secure REST APIs and backend services (.NET / C#, Azure App Service or Functions).
• Build React/TypeScript front ends that integrate with intranet and Milestone One design system.
• Create integrations between internal systems and third-party services via APIs and webhooks.
• Work in GitHub with PRs, CI/CD, and automated code and secret scanning.
• Define infrastructure as code with OpenTofu, using Managed Identity and Key Vault.
• Write automated tests with Playwright and support business users during acceptance testing.
• Collaborate with stakeholders to shape requirements into working solutions.

Job description

Milestone One is seeking a Full-Stack Developer to design, build, and maintain internal platforms, applications, and integrations. The role features a React/TypeScript front end, an API layer, and a database backend hosted on Azure with Microsoft 365 integration.

You'll work in a small team with AI coding agents, focused on secure, tested, and documented delivery. Responsibilities span data modeling, API design, UI, integrations, and infrastructure as code.