Senior C# Backend Engineer – Identity & Authorization (Remote UK)

Itransition Group; United States; À distance; USD 110 000 - 170 000; Plein temps

Avantages offerts par ce poste

Projects for major clients

Competitive compensation

Career development system with clear技能

Flexible working hours

Résumé du poste

Itransition Group is seeking a skilled C# backend engineer to join the Authorization team and help build the Identity & Authorization Platform used across all products. You will develop SDKs, Policy APIs, authorization microservices, and identity services.

Ideal candidates have 5+ years of C#/.NET experience, solid knowledge of REST, OAuth2/JWT/OIDC, and distributed systems, plus a passion for secure, scalable authorization architectures. Remote-friendly with flexible hours.

Qualifications

• 5+ years of experience with C#/.NET, REST APIs, and security protocols.
• Experience with RBAC, ReBAC, ACL, and policy evaluation is a plus.
• Familiarity with distributed systems and graph modeling.

Responsabilités

• Develop Authorization SDKs
• Evolve Policy APIs
• Create and maintain Authorization microservices
• Develop Identity services
• Implement RBAC, ReBAC, ACL, and policy evaluation
• Build graph relationships, permission inheritance, and delegated administration
• Build integrations with API Gateway, AI Gateway, Kubernetes, and Service Mesh
• Write automated tests, authorization regression suites, and performance tests

Connaissances

C#/.NET

REST APIs

OAuth2 / JWT / OIDC

Graph modeling

Distributed systems

RBAC / ReBAC / ACL / policy evaluation

Outils

Neo4j

OpenFGA

SpiceDB

OPA

Redis

Kafka

Kubernetes

Service Mesh

API Gateway

AI Gateway

Description du poste

Itransition Group is seeking a skilled C# backend engineer to join the Authorization team and help build the Identity & Authorization Platform used across all products. You will develop SDKs, Policy APIs, authorization microservices, and identity services.

Ideal candidates have 5+ years of C#/.NET experience, solid knowledge of REST, OAuth2/JWT/OIDC, and distributed systems, plus a passion for secure, scalable authorization architectures. Remote-friendly with flexible hours.