Full-Stack .NET Developer

Requirements

• 3–5+ years of experience with .NET (Core/5+/6+/7+/8) building production APIs.
• Strong experience with React or React Native and TypeScript.
• Solid understanding of REST APIs, HTTP, authentication/authorization (JWT, OAuth2/OpenID Connect).
• Confident with relational databases (SQL Server/Azure SQL, query optimization, transactions).
• Experience with cloud hosting (preferably Azure) and CI/CD pipelines.
• Comfortable owning features end-to-end: from tech design to deployment and monitoring.
• Strong communication skills, ability to work in an async/remote team, and provide/receive code reviews.

Nice to have

• Experience in fintech, banking, or payments domain (KYC/AML, card linking, payouts).
• Experience with Azure AD B2C, Plaid, Stripe/TabaPay, or similar providers.
• Familiarity with OpenAI API or other LLMs in production.
• Prior work with SOC 2 / GDPR / CCPA requirements, audit logging, and security best practices.

Key responsibilities

• Design and implement features across React Native mobile, React web, and .NET 8 Web API.
• Build secure auth flows with Azure AD B2C, JWT, and refresh tokens; implement RBAC and policy-based access.
• Integrate with third-party services: Plaid, Jumio/Alloy, BaaS provider, Stripe/TabaPay, SendGrid, Twilio, OpenAI.
• Work with Azure SQL + Dapper to design performant queries, models, and migrations.
• Implement background jobs and workflows with Hangfire, Redis, and Azure Functions/App Service.
• Handle file and media flows via Azure Blob Storage, signed URLs, and mobile viewers (PDF, images).
• Implement and tune React Query + Zustand state management and React Hook Form + Zod validation.
• Collaborate on CI/CD with Azure DevOps Pipelines, help debug production issues using App Insights, Log Analytics, and Sentry.
• Contribute to security, auditing, and compliance (KYC/AML, PII minimization, logging of critical operations).
• Review code, mentor teammates, and help refine architecture and best practices.

Tech stack you’ll work with

• Mobile: React Native (TypeScript), React Navigation, React Query, Zustand, React Hook Form, Zod, AsyncStorage, Keychain/Keystore, FCM/APNs, Mixpanel, Sentry
• Web: React (TypeScript), Tailwind CSS, React Router, React Query, Ant Design, Recharts
• Backend: .NET 8 Web API, Dapper, Redis, Hangfire, Azure Blob Storage, Azure SQL, SendGrid, Twilio, Plaid, Jumio/Alloy, Stripe/TabaPay, OpenAI (via proxy)
• Infra & DevOps: Azure App Service, Azure Static Web Apps, Azure CDN, Azure DevOps Pipelines, Azure Key Vault, Bicep, Application Insights, Log Analytics

About the role
You’ll build and evolve a fintech platform across mobile, web, and backend. You’ll work end-to-end: from designing APIs and data models to implementing polished mobile and web experiences, integrating with banking/KYC providers, and ensuring security, reliability, and compliance.