Backend Engineer — Identity & Auth Platform

Farfetch; Porto; Hybrid; EUR 70,000 - 100,000; Full time

Job summary

Farfetch is seeking a skilled Software Engineer to join the ID team in Porto. Reporting to the Engineering Lead, you will help design and develop our Identity platform (Authentication, Authorization, and Account domains), ensuring scalable, secure, and GDPR-conscious solutions.

You will work with .NET, MongoDB, Cassandra, Kafka, Redis, Docker, and Duende Identity Server, collaborating with cross-functional teams to deliver reliable services.

Qualifications

• Strong experience with .NET/C# and OOP principles.
• Experience in authentication/authorization flows (OAuth/OpenID).
• Knowledge of testing strategies and code quality.
• Autonomous with ability to make technical decisions.
• Experience with NoSQL/SQL databases and large-scale systems.
• Familiarity with SCRUM/Kanban is a plus.
• Proficient in English, both written and spoken.

Responsibilities

• Refine Authentication/Authorization microservices and ensure smooth usage across Farfetch ecosystem.
• Improve the team's tools, frameworks, and libraries to boost productivity.
• Coach and support development teams on best practices and tool usage.
• Monitor, maintain, and support existing services and libraries.
• Define the team's technical roadmap with Senior/Principal Engineers and other teams.
• Collaborate with other teams to ensure technical feasibility of projects.
• Advance technical capabilities using state-of-the-art technologies (.NET, MongoDB, Cassandra, Kafka, Redis, Docker, Duende Identity Server, OAuth/OpenID).

Skills

C# .NET

OAuth/OpenID

Code quality

Autonomy

Distributed systems

Best practices

NoSQL/SQL

Agile methodologies

English

Tools

MongoDB

Cassandra

Kafka

Redis

Docker

Duende Identity Server

Job description

Farfetch is seeking a skilled Software Engineer to join the ID team in Porto. Reporting to the Engineering Lead, you will help design and develop our Identity platform (Authentication, Authorization, and Account domains), ensuring scalable, secure, and GDPR-conscious solutions.

You will work with .NET, MongoDB, Cassandra, Kafka, Redis, Docker, and Duende Identity Server, collaborating with cross-functional teams to deliver reliable services.