[WAP] Senior Full-Stack Developer (React, .NET)

Project the aim youll have

Join a next-generation risk analysis and scoring platform built for a payments technology company. The platform combines the clients own risk rules with AI-driven pre-scored risk feeds from a global card network over high-volume payment data under PCI DSS. Youll own the C#/.NET services and API contracts the analyst-facing apps run on in a small AI-first delivery team alongside a frontend-leaning developer.

Role how youll contribute

• Design build and ship production C#/.NET services and REST APIs serving high-volume payment and risk data under PCI DSS constraints
• Own API contracts with the front end: typed OpenAPI contracts versioning and backward-compatible change
• Write efficient data access against the operational database and Microsoft Fabric Gold-layer risk tables at analyst-scale volumes
• Implement security-critical concerns: authentication authorization audit logging and PCI-safe handling of tokenized card data
• Contribute to the React and TypeScript front end building features end to end reviewing and pairing
• Use Claude Code or an equivalent agentic coding tool as your primary accelerator backed by unit integration and contract tests while owning the quality of every line merged
• Maintain Dockerfiles and Compose configurations support deployments to AKS and contribute to Azure DevOps CI/CD
• Implement against the target architecture set by the clients architecture group raise risks early and hand off work the internal team can own

Qualifications :

Expectations the experience you need

• 7 years of commercial software development including 5 years of production-grade C#/.NET ( Core async DI EF Core or Dapper)
• Strong API design: REST conventions OpenAPI contracts versioning and evolving APIs without breaking consumers
• Relational database and distributed-systems skills: schema design query tuning transactional correctness idempotency failure handling
• Working proficiency in React and TypeScript able to build features end to end and review frontend code
• Daily hands-on use of agentic AI coding tools (Claude Code Cursor Copilot Workspace Codex or similar) and a track record of shipping AI-accelerated code that holds up in production youll demo your workflow live
• Containers: Docker (multi-stage builds hardening) Docker Compose and Kubernetes (AKS preferred)
• Testing discipline: xUnit or NUnit integration testing with real dependencies (e.g. Testcontainers) and contract testing
• Git CI/CD (Azure DevOps GitHub Actions or similar) and autonomy in an existing codebase

Additional skills the edge you have

• Payments card processing risk/fraud or merchant services experience ideally with PCI-scoped systems
• Microsoft Fabric Delta Lake or building APIs over analytical data stores
• Messaging and observability: Azure Service Bus Event Hubs or Kafka; OpenTelemetry and Application Insights
• Identity standards: OAuth2/OIDC Microsoft Entra ID managed identity
• Python and exposure to LLM-integrated or agentic applications (e.g. LangGraph); prior consulting experience

Additional Information :

What we offer:

• Flexible and remote cooperation options
• International projects with leading global clients
• Travels related to international projects
• Non-corporate atmosphere
• Access* to language classes
• Access* to knowledge-sharing initiatives
• Access* to private healthcare and life insurance
• Access* to multisport card

*The availability and terms of individual benefits may vary depending on the chosen form of cooperation.

Remote Work :

Yes

Employment Type :

Full-time