Senior .NET Backend Architect

Logoslabs; San Francisco (CA); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Gym/Wellness programs

PLR – Profit Sharing

CI&T University

Job summary

CI&T in San Francisco is seeking a Master .NET Specialist to lead the development and integration of complex back-end software solutions. You will work with a multicultural team across multiple regions, setting the technical direction for scalable services and integrations.

The role requires deep .NET expertise, API design experience, and a focus on reliability, performance, and code quality within English-speaking environments.

Qualifications

• Extensive experience with .NET Framework and .NET Core in high-volume production systems.
• Backend services design and implementation using C#, ADO.NET, and SQL Server.
• Experience implementing SOAP and RESTful APIs with versioning and security.
• Strong data persistence, SQL Server optimization, and performance tuning.
• XML serialization/deserialization for data exchange.
• Knowledge of software design patterns, clean architecture, and best practices.
• Experience with unit/integration testing and root-cause analysis.
• Excellent English communication in multicultural, fast-paced teams.

Responsibilities

• Design, build, and maintain complex backend services in C#, ADO.NET, and SQL Server.
• Implement and evolve SOAP and REST APIs with standards for versioning, security, and performance.
• Ensure service reliability via unit and integration testing and incident analysis.
• Collaborate on integrations across multiple systems applying architectural patterns.
• Conduct code reviews and mentor junior engineers.
• Stay current with emerging technologies and improve engineering practices.
• Contribute to CI/CD workflows to boost efficiency and deployment consistency.

Skills

.NET

Backend Development

APIs & Integration

Data & Persistence

XML

Software Design

Testing & Reliability

Communication

English Proficiency

Tools

SOAP

REST APIs

ADO.NET

SQL Server

Job description

CI&T in San Francisco is seeking a Master .NET Specialist to lead the development and integration of complex back-end software solutions. You will work with a multicultural team across multiple regions, setting the technical direction for scalable services and integrations.

The role requires deep .NET expertise, API design experience, and a focus on reliability, performance, and code quality within English-speaking environments.