Senior Backend Engineer - Identity & Access (C#/.NET)

United States Digital Space LLC; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid work

Virtual Shares

30 days annual leave

Job summary

DeepL is looking for an experienced engineer to own the Identity Experience End-to-End, architecting and building features across our identity stack for internal and external users. You will help maintain secure authentication and authorization, delivering reliable, scalable solutions at global scale.

The role emphasizes four nines reliability, incident response, and collaboration across teams, with a strong focus on backend design in C#/.NET and frontend work using React/JavaScript.

Qualifications

• Strong experience designing scalable backend systems in production.

Responsibilities

• Own the Identity Experience End-to-End across the stack.
• Architect and build complex, user‑facing features for identity services.
• Ensure reliability, scalability, and security with four nines availability.

Skills

C#

React

JavaScript

Tools

GitHub Copilot

Claude

Job description

DeepL is looking for an experienced engineer to own the Identity Experience End-to-End, architecting and building features across our identity stack for internal and external users. You will help maintain secure authentication and authorization, delivering reliable, scalable solutions at global scale.

The role emphasizes four nines reliability, incident response, and collaboration across teams, with a strong focus on backend design in C#/.NET and frontend work using React/JavaScript.