Junior Software Engineer – .NET

Valid

Junior .NET Software Engineer supporting development and maintenance of secure identification solutions. Collaborating on projects involving APIs, databases, and user interfaces.

Posted 7/10/2026full-timeRemote • 🇧🇷 BrazilJuniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Proficient in developing and maintaining REST APIs and Windows Services using .NET 8.0 and .NET Framework 4.8, with a strong understanding of scalable architectures and SOLID design principles. Experienced in user interface development with React JS, JavaScript, HTML5, and CSS3, along with knowledge of authentication integration methods.

Highest-signal resume keywords

C#.NET 8.0REST API DevelopmentReact JSOAuth Integration

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

C#.NET 8.0.NET Framework 4.8REST API DevelopmentWindows ServicesJavaScriptHTML5CSS3NoSQL DatabasesORMs

Tools & Technologies

RabbitMQPub/SubOAuthOpenIDJWT

Industry Keywords

SOLID Design PrinciplesScalable ArchitecturesSoftware Design PatternsArtificial Intelligence

Tech Stack

Tools & technologies

JavaScript.NETNoSQLRabbitMQReact

About the role

Key responsibilities & impact

Assist in the development and maintenance of REST APIs, Windows Services, and Workers using .NET 8.0 and .NET Framework 4.8;
Participate in the implementation of solutions based on SOLID design principles and scalable architectures;
Collaborate with the team on work with relational and NoSQL databases;
Contribute to the development of user interfaces using React JS, JavaScript, HTML5, and CSS3;
Support authentication integration with OAuth, OpenID, and JWT.

Requirements

What you’ll need

Knowledge of C#, .NET 8.0, and .NET Framework 4.8;
Familiarity with developing REST APIs, Windows Services, and Workers;
Basic understanding of relational and NoSQL databases;
Basic knowledge of ORMs and messaging systems (RabbitMQ, Pub/Sub);
Knowledge of JavaScript, HTML5, CSS3, and React JS.
**Preferred qualifications:**
Knowledge of software design patterns;
Experience developing software with Artificial Intelligence.

Benefits

Comp & perks

Medical insurance (health coverage)
Dental plan
iFood Benefits
Wellhub
Transportation allowance
Childcare assistance
Profit-sharing (PLR)
Life insurance
Hybrid work model
Day off