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Senior Dotnet Authentication Developer
ExperitureGreater Kolkata Area, India8 days ago
Job descriptionSystem Maintenance & Security (40%) Maintain 99.9% uptime for authentication services Investigate and resolve security incidents Optimize DB queries & caching for authentication flows Review audit logs and enforce security hardening Feature Development (35%) Build new authentication endpoints Enhance MFA & RBAC capabilities Integrate with new microservices and frontends Add compliance-driven security features Architecture & Leadership (25%) Maintain clean architecture & repository patterns Lead database schema evolution Write comprehensive technical documentation Mentor team members on security best practices Authentication & Security (Primary) : 3+ years in production authentication systems (JWT, OAuth, SSO, MFA) Enterprise RBAC implementation with tenant isolation Multi-factor authentication (TOTP, SMS / Email OTP, backup codes) Security incident investigation & breach response Password security (BCrypt, breach detection) Audit logging & compliance reporting .NET Development : 6+ years in C# 8+, ASP.NET Core Entity Framework Core (complex queries, performance tuning) Repository pattern, clean architecture, async / await RESTful API design & versioning Database & Performance : PostgreSQL : advanced SQL, indexing, optimization Redis : distributed caching, session / token storage Multi-tenant schema design & scaling DevOps : Docker multi-stage builds Azure services : Container Apps, Key Vault, Application Insights CI / CD pipelines & automated testing 3+ years in production authentication (JWT, OAuth, MFA, SSO) Experience with RBAC, password policies, audit logging, incident response Hands-on architecture & implementation of multi-tenant authentication systems
About Experiture
We’re building a Campaign Intelligence Engine (CIE) — a cutting-edge SaaS platform empowering enterprises to run smarter marketing campaigns. Our authentication microservice is the security backbone protecting sensitive campaign data for global enterprise clients.
The Role
We’re looking for a Senior .NET Developer to own and lead our production authentication microservice. This system powers JWT tokens, MFA, RBAC, and enterprise security for our entire platform. You will be the sole technical owner, collaborating with IT for Azure infrastructure, and making security-first architectural decisions.
Tech Stack
- Backend : .NET 8, C# 12, ASP.NET Core Web API
- Database : PostgreSQL (via Entity Framework Core)
- Caching & Auth : Redis, JWT
- Infrastructure : Azure Container Apps, Docker
- Scale : 20k+ LOC, 25+ DB entities
Key Responsibilities
Required Skills
Ideal Candidate
Deep expertise in authentication protocols & enterprise security patterns, proven success in multi-tenant SaaS authentication systems, security-first approach to architecture, and strong production debugging skills.
Minimum Qualifications
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Dotnet Developer • Greater Kolkata Area, India
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