Mid-Level .NET Developer

Remote; San Francisco (CA); Remote; USD 22,000 - 33,000; Full time

Benefits offered by this job

Health and dental insurance

Meal and food allowances

Childcare assistance

Extended paternity leave

Gym and wellness programs

Profit Sharing (PLR)

Life insurance

Continuous learning platform

Employee discount club

Free online resources for wellbeing

Parental and family support courses

Access to language-learning platform

Job summary

Partner Company is seeking a Mid-Level .NET Developer to contribute to the modernization of web apps built on .NET and React in a remote, collaborative engineering environment. You will strengthen authentication and authorization, upgrade .NET Core versions, and work across cloud infrastructure and databases.

You will collaborate with stakeholders to prioritize work, integrate third‑party services, and ensure secure, reliable, and maintainable applications while delivering high quality code.

Qualifications

• Minimum 5 years of professional .NET development experience.
• Experience designing, implementing, and maintaining authentication/authorization systems.
• Hands-on experience upgrading .NET/.NET Core apps.
• Production React experience.
• Experience with AWS and relational DBs (MySQL, PostgreSQL).
• Familiarity with third‑party API integrations.
• Proficient with Git/Bitbucket workflows.
• Experience with automated testing (Playwright).
• Understanding CI/CD pipelines and automated testing/deployment.
• Advanced English communication with stakeholders.
• Strong problem-solving and collaboration skills.

Responsibilities

• Maintain, enhance, and support existing web applications using ASP.NET, .NET, and .NET Core.
• Design, implement, and modernize authentication/authorization using OAuth2, OIDC, and JWT.
• Plan and upgrade to newer .NET Core versions for compatibility and maintainability.
• Develop and maintain production apps using React and .NET.
• Work with AWS services and databases like MySQL and PostgreSQL.
• Integrate third‑party APIs and services to extend functionality.
• Use Bitbucket and Git-based version control in team workflows.
• Implement automated testing with Playwright to improve quality.
• Leverage CI/CD pipelines for automated testing and deployment.
• Communicate in English with stakeholders to clarify requirements.
• Collaborate to deliver maintainable solutions and enhance performance and security.

Skills

C#/.NET

ASP.NET

React

OAuth2/OIDC/JWT

AWS

MySQL

PostgreSQL

Git/Bitbucket

CI/CD

Playwright

English

Tools

Git/Bitbucket

Job description

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Mid-Level .NET Developer based in Brazil.

The Mid-Level .NET Developer will contribute to the maintenance, modernization, and continuous improvement of web applications built with .NET and React. A key focus will be strengthening application security by modernizing authentication and authorization systems while upgrading existing solutions to newer .NET Core versions. You will collaborate with technical teams and communicate directly with stakeholders to understand business needs and prioritize development work. The role involves working across cloud infrastructure, relational databases, third-party integrations, and automated delivery pipelines. You will help ensure applications remain secure, reliable, maintainable, and aligned with evolving technical requirements. This is an opportunity to contribute to application modernization within a collaborative, remote engineering environment.

Accountabilities:

• Maintain, enhance, and support existing web applications developed using ASP.NET, .NET, and .NET Core.
• Design, implement, and modernize authentication and authorization solutions using OAuth2, OpenID Connect (OIDC), JSON Web Tokens (JWT), and identity providers.
• Plan and execute upgrades to newer .NET Core versions, ensuring application compatibility, stability, and maintainability.
• Develop and maintain production applications using React alongside .NET technologies.
• Work with AWS cloud services, relational databases such as MySQL and PostgreSQL, and external services.
• Integrate third-party APIs and services to extend application functionality and support business requirements.
• Use Bitbucket and Git-based version control practices to manage source code and collaborate effectively with the development team.
• Implement and maintain automated testing practices, using tools such as Playwright to improve application quality and reliability.
• Work with CI/CD pipelines to automate testing, integration, and deployment processes.
• Communicate in English with stakeholders to clarify requirements, discuss priorities, and align development activities with business needs.
• Collaborate with team members to deliver maintainable solutions and continuously improve application performance and security.

Requirements:

• At least 5 years of professional experience in .NET development using C# and web technologies.
• Proven experience designing, implementing, and maintaining authentication and authorization systems.
• Hands-on experience upgrading applications across .NET and .NET Core versions.
• Professional experience developing and maintaining React applications in production environments.
• Experience working with AWS and relational databases, particularly MySQL and PostgreSQL.
• Familiarity with third-party API integrations and external service connectivity.
• Comfortable using Git and Bitbucket for source control and collaborative development workflows.
• Experience with automated software testing; knowledge of Playwright is an advantage.
• Understanding of CI/CD pipelines and automated testing and deployment practices.
• Advanced English proficiency, with the ability to communicate clearly and confidently with stakeholders.
• Strong problem-solving, collaboration, and communication skills, with the ability to understand requirements and contribute to technical prioritization.

Benefits:

• Health and dental insurance.
• Meal and food allowances.
• Childcare assistance.
• Extended paternity leave.
• Gym, fitness, and wellness partnerships through Wellhub (Gympass) and TotalPass.
• Profit Sharing and Results Participation (PLR).
• Life insurance.
• Access to a continuous learning platform.
• Employee discount club.
• Free online resources supporting physical, mental, and overall well-being.
• Pregnancy and responsible parenting courses.
• Partnerships with online learning platforms.
• Access to a language-learning platform.
• Additional employee benefits and well-being initiatives.