Senior Technical Lead C#​/.NET, React & Azure​/AWS Cloud Architecture

Location: Sacramento, CA (ONSITE)
Employment Type: Contract (W2 only)
Duration: 6+ Months
Experience

Required:

12 +Years

We are seeking an experienced Senior Technical Lead with strong expertise in C#, .NET, React, Azure/AWS, Microservices, Security, and Dev Ops.

The ideal candidate will be responsible for designing enterprise-level applications, defining technical architecture, leading development teams, and driving cloud migration and modernization initiatives. The candidate must have strong hands‑on development and solution architecture experience across cloud and hybrid environments.

• Design and lead enterprise application architecture using C#, .NET, and React.

• Develop and implement Microservices, REST APIs, and cloud-native applications.

• Apply software architecture and design patterns to build scalable and maintainable applications.

• Lead legacy application modernization and cloud migration initiatives.

• Design secure applications using industry security standards and best practices.

• Implement authentication, authorization, API security, and data protection.

• Optimize application, database, and front-end performance.

• Build and maintain CI/CD pipelines for automated software deployment.

• Lead technical discussions, architecture reviews, and code reviews.

• Troubleshoot complex application performance, scalability, and reliability issues.

• Guide development teams and establish technical standards.

Backend Development

• Strong expertise in C# and .NET / .NET Core.

• Enterprise API development and REST APIs.

• Object‑Oriented Programming and Design Patterns.

• Distributed Systems and Microservices Architecture.

Frontend Development

• Strong hands‑on experience with React.

• JavaScript / Type Script.

• Front‑end architecture, component design, and state management.

• Front‑end performance optimization.

Cloud & Infrastructure

• Hands‑on experience with Microsoft Azure or AWS.

• Cloud‑native application development.

• Hybrid cloud architecture and cloud migration.

• Legacy application modernization (Re‑hosting, Re‑platforming, and Re‑architecting).

Security

• Application and Cloud Security Architecture.

• OWASP Top 10 and Secure SDLC.

• OAuth2, OpenID Connect, JWT, and RBAC.

• Secrets Management, Data Encryption, and Network Security.

Dev Ops & Automation

• CI/CD Pipeline Implementation.

• Infrastructure as Code (Terraform / Ansible).

• Docker and Kubernetes.

Databases

• Microsoft SQL Server.

• No
  
  SQL databases such as MongoDB.

• Database Performance Tuning and Optimization.

Architecture & Design Patterns

• Microservices and Event‑Driven Architecture.

• Domain‑Driven Design (DDD).

• CQRS, Saga, API Gateway, and GoF Design Patterns.

• Enterprise Integration and API Design Patterns.

Performance Optimization

• Application and Database Performance Optimization.

• Load Testing, Performance Testing, and Application Profiling.

• Monitoring and Observability using Application Insights, Prometheus, or Grafana.

• Scalability and Capacity Planning.

Development Practices

• Agile (Scrum / Kanban).

• Git and Jira.

• Automated Testing and Quality Engineering Practices.

• 10–12 years of overall software engineering experience.

• Significant experience in a Technical Lead or Solution Architect role.

• Proven hands‑on expertise in C#, .NET, React, and Azure or AWS.

• Strong experience designing and delivering large‑scale enterprise applications.

• Proven experience with Microservices, Security, and Dev Ops.

• Experience leading hybrid modernization and cloud migration programs.

• Experience working in cloud and hybrid‑cloud environments.

• Demonstrated experience in enterprise security architecture and performance optimization.

• Strong technical leadership and problem‑solving skills.

No separate preferred skills were specified in the client JD.

• Fully Remote.

• No onsite or hybrid attendance requirement specified.