Desenvolvedor Front End Junior jobs in Brazil

StaffingAbroad is seeking a Principal Backend Engineer / Senior Software Engineer to join a #1 US-based FinTech & Crypto company.

This role is ideal for a highly skilled backend developer who excels in C# / .NET and has a strong focus on writing maintainable, scalable, and secure code.

You will play a key role in shaping architecture, ensuring system performance, and embedding best practices while working in a fast‑paced and innovative environment. This is a 100% remote, full‑time role. Salary $ USD to $ USD.

• Develop and maintain applications: Build, enhance, and maintain secure, scalable backend services using C# / .NET and integrate with APIs like Plaid, Dwolla, and Treasury Prime.
• Shape system architecture: Contribute to system design, ensuring performance, scalability, and security across FinTech applications.
• Write quality code: Implement and test maintainable, well‑documented code, with a focus on automation and software best practices.
• Support production systems: Monitor and troubleshoot production applications to ensure high availability and quick issue resolution.
• Collaborate across teams: Work closely with front‑end, QA, product, and IT teams, while mentoring junior engineers.
• Focus on security and compliance: Embed security best practices and maintain compliance with FinTech regulations.

• Strong technical expertise: solid foundation in design patterns, software development best practices, and principles like SOLID and Clean Code.
• Proficiency in C# / .NET, ASP.NET MVC / WebAPI, and Object-Relational Mappers (ORMs).
• Strong understanding of MSSQL database design and optimization.
• Familiarity with asynchronous microservices architecture and distributed systems.
• Experience with modern front‑end and server‑side technologies such as Node.js and React.
• Commitment to software quality: hands‑on experience with unit testing, mocking, integration testing, and ensuring code coverage.
• Familiarity with CI/CD pipelines, particularly in Azure DevOps.
• Proficient in version control systems, especially Git.

• 6+ years of back‑end software development experience.
• Bachelor's degree in Computer Science or a related field (preferred).

• Excellent written and verbal communication skills.
• Ability to work effectively with team members and stakeholders.
• Enthusiasm for contributing to a collaborative, dynamic team environment.

• Passion for innovation, accountability, and teamwork.
• Alignment with a culture that prioritizes excellence in FinTech and Crypto solutions.

• Experience with iDesign architecture methodology.
• Familiarity with cloud platforms such as Azure, including their tools and services.