Sr. .Net Developer

Sr. .Net Developer
Key Responsibilities

• Architect, design, and implement .NET Core / .NET 6+/7+ web applications and services, adhering to domain-driven design and clean architecture principles.
• Develop and maintain RESTful APIs as well as SOAP/WSDL-based services, webhooks, and service endpoints.
• Construct frontend user interfaces utilizing React.js or other component/UI frameworks such as Angular or Vue, ensuring seamless integration with backend systems.
• Design and deliver generative AI and LLM-powered solutions including prompt engineering, embedding/retrieval augmented generation (RAG), vector store implementation , prompt orchestration, and integration with external AI APIs or model hosts.
• Build and maintain desktop and Office extension clients, including WPF applications and VSTO Office add-ins for Excel, Word, and Outlook.
• Implement Windows-level integrations, such as context menu overrides, shell extensions, system hooks, and registry modifications.
• Develop messaging and event-driven architectures leveraging Kafka, Pub/Sub, message brokers (e.g., RabbitMQ, Azure Service Bus), event sourcing, and CQRS where applicable.
• Ensure robust monitoring, logging, alerting, and observability through comprehensive instrumentation of services with metrics, dashboards, distributed tracing, structured logs, health checks, and error tracking.
• Drive reliability, scalability, and performance optimization across technology layers.
• Conduct code reviews, design reviews, and architectural critiques to promote coding standards, patterns, and industry best practices.
• Mentor mid-level and junior engineers, facilitating technical growth, and contributing to estimation, grooming, and strategic planning processes.
• Participate actively in sprint planning, backlog refinement, architectural discussions, incident response, and deployment readiness activities.

Required Qualifications & Skills

Domain Must-Have Skills / Experience

• Core / Backend: 7–10 years of professional experience in C#/.NET Core/.NET 6+ development; comprehensive understanding of object-oriented design, SOLID principles, and design patterns (repository, unit of work, dependency injection); proven expertise in architecting modular, maintainable, layered service structures.
• APIs & Integration: Hands-on experience building RESTful APIs, controllers, versioning, authentication/authorization; familiarity with SOAP/WSDL legacy services as required; proficiency in webhook design and subscription management.
• Frontend / UI: Demonstrated ability to build React.js frontends and integrate with APIs; solid grasp of frontend-backend interaction, state management, and component architecture.
• Desktop / Office: Documented record of building WPF desktop applications using the MVVM pattern and handling complex UI logic; experience developing VSTO/Office add-ins and COM interop for Excel, Word, and Outlook.
• Windows System / Context: Acquainted with Windows internals including context menu overrides, shell integration, system hooks, and registry APIs.
• Messaging / Events: Practical experience with Kafka, Pub/Sub/message brokers, and event-driven systems; expertise in designing event flows, partitions, consumer groups, retry policies, and schema management.
• GenAI / AI Integration: Exposure to prompt engineering, embeddings, vector store implementation, and retrieval-augmented generation (RAG); experience integrating with external LLM APIs or hosting models, including caching and context window management.
• Observability / Monitoring: In-depth knowledge of logging frameworks (Serilog, NLog, etc.) and structured logging strategies; proficiency in instrumentation, metrics, distributed tracing (OpenTelemetry), and dashboard configuration (Grafana, Prometheus, Application Insights).
• DevOps / Deployment: Familiarity with CI/CD pipelines, build/release automation, unit/integration testing, and environment promotion strategies; experience with containerization (Docker/Kubernetes) or cloud deployments (Azure/AWS/GCP) considered advantageous.
• Soft / Leadership: Exceptional problem-solving, communication, and collaboration skills; history of leading technical initiatives, mentoring colleagues, and influencing architectural decisions; strong sense of ownership and accountability.

Preferred / Bonus Skills

Experience with Azure / AWS / GCP services (e.g. Azure Functions, Cosmos DB, Azure Service Bus, AWS Lambda, etc.).

• Experience working with microservices, domain-driven design, aggregate modeling, or event sourcing / CQRS.
• Familiarity with identity & security (OAuth, JWT, OpenID Connect, role-based access).
• Experience with performance tuning, concurrency, multithreading, caching strategies.
• Exposure to front-end frameworks beyond React, such as Angular, Vue, Blazor.
• Experience working with NoSQL / vector databases (e.g. Redis, Elasticsearch, Pinecone, Milvus, etc.).
• Experience handling on-prem deployment, desktop installers, Windows service architecture.
• Experience with feature flags / rollout strategies, A/B testing, canary releases.
• Knowledge of data science / ML pipelines, prompt chaining, LLM orchestration, or embedding pipelines.