Senior Principal Engineer - .NET

Responsibilities:

• Set the technical direction for core infrastructure, making architecture decisions that balance performance, compliance requirements, and scalability across multiple product lines.
• Define engineering standards including service interoperability, data flow design, and how system-level controls are enforced technically.
• Lead evaluation and adoption of new technologies or vendor platforms, making credible decisions supported by technical and commercial analysis.
• Partner with product, compliance, and senior business stakeholders to shape the roadmap translating regulatory and market requirements into engineering priorities.
• Serve as the technical authority on high-severity production incidents, owning post-incident reviews and systemic remediation plans.
• Mentor engineers and raise overall engineering capability across the organization.
• Contribute to external technical credibility through architecture reviews and engagement with key vendor and institutional partners.

Requirements:

• 15+ years building production software with substantial full-stack work across backend services and frontend applications.
• Proven experience in distributed systems or high-throughput transactional platforms.
• Experience in fintech, trading, or other mission-critical domains is an advantage.
• Strong problem-solving skills, ability to debug complex systems, and comfort with production support responsibilities.
• Excellent communication and collaboration skills in distributed, Agile team environments.
• Proficiency in C# and. NET Core (6/7/8+), including dependency injection, async/await patterns, TPL, and REST API design best practices.
• Strong React experience with hooks, functional components, state management (Redux/Context API), TypeScript, and modern build tooling (Webpack, Vite).
• Hands-on experience with relational databases (SQL Server: indexing, query optimization, transactions) and at least one NoSQL store (Cosmos DB preferred: partitioning, consistency tuning).
• Experience with messaging systems (Azure Service Bus, Event Grid) and event-driven architecture patterns.
• Understanding of containerization (Docker) and Kubernetes/AKS basics: deployments, services, ConfigMaps, secrets, resource limits.
• Familiarity with CI/CD workflows (Azure Pipelines, GitHub Actions), Git-based development, feature toggles, and automated testing frameworks.
• Experience with API security (authentication, authorization, JWT, OAuth2) and secure coding practices.
• Knowledge of observability practices: structured logging, distributed tracing (Application Insights, OpenTelemetry), and metric-driven debugging.

Skills

.NET Core, ASP.NET Core, C#, React, React.js, TypeScript, distributed systems, event-driven