Principal/Senior Software Engineer (React.js.) - OP02041

Dev.Pro

São Paulo, São Paulo, Brazil Remote permanent

Posted: February 13, 2026

Required Skills

Job Description

🟢 We’re expanding our team and opening new remote opportunities! Review the role expectations, share your resume in English, and our team will follow up shortly.

We invite a talented and driven Senior Full-Stack Software Engineer with strong .NET and React.js skills to join our experienced, cross-functional Agile team. In this role, you’ll contribute to the modernization of a critical internal platform, transforming a complex legacy system into an efficient, scalable solution that offers improved performance and a better user experience.

🟩 What's in it for you:

• Work with a reputable S&P 500 fintech company
• Modernize a critical platform with multiple dependencies, integrations, and complex logic
• Join an experienced, international team using a modern tech stack (NET 6+, React.js, TypeScript, Next.js, Docker, GCP)

✅ Is that you?

• 6+ years of experience with .NET 6+ and .NET Core development
• 2+ years of experience with JavaScript (React.js, TypeScript)
• Proven experience developing APIs with .NET 6
• Strong knowledge of SQL Server and stored procedures
• Experience writing unit tests and producing testable code
• Solid understanding of OOP principles and related concepts
• Experience building n-tier enterprise applications
• Strong technical judgment in selecting and applying languages, patterns, and libraries
• Good knowledge of Scrum methodology
• Excellent communication and teamwork skills
• Ownership, accountability, and proactive problem-solving
• Upper-Intermediate English level

Desirable:

• Experience building AI/ML-powered frontend features
• Familiarity with video encoding, FFmpeg, or annotation tools
• Experience building internal tools for data/ML teams
• Knowledge of Node.js or distributed systems
• Experience working with Azure, Redis, or containerized environments

🧩Key responsibilities and your contribution

In this role, you’ll help rewrite our legacy application to improve its performance and quality and introduce new features using a modern tech stack.

• Develop and maintain high-quality code for new features and improvements
• Participate in the release process to ensure smooth deployments
• Collaborate with the team to refine the technical backlog
• Conduct code reviews and provide constructive feedback
• Work with the team to resolve technical challenges and implementation issues
• Contribute ideas and suggestions to improve the overall application architecture

Our next steps:

✅ Submit a CV in English — ✅ Intro call with a Recruiter — ✅ Internal interview — ✅ Client interview — ✅ Offer

Interested? Find out more:

📋How we work

💻 LinkedIn Page

📈 Our website

💻IG Page

Why Apply Through MisuJob?

AI-Powered Job Matching: MisuJob uses advanced artificial intelligence to analyze your skills, experience, and career goals. Our matching algorithm compares your profile against thousands of job requirements to find positions where you have the highest chance of success. This saves you hours of manual job searching and ensures you only see relevant opportunities.

One-Click Applications: Once you create your profile, applying to jobs is effortless. Your resume and cover letter are automatically tailored to highlight the most relevant experience for each position. You can apply to multiple jobs in minutes, not hours.

Career Intelligence: Beyond job matching, MisuJob provides valuable career insights. See how your skills compare to market demands, identify skill gaps to address, and understand salary benchmarks for your experience level. Make data-driven decisions about your career path.

Frequently Asked Questions

How do I apply for this position?

Click the "Register to Apply" button above to create a free MisuJob account. Once registered, you can apply with one click and track your application status in your dashboard.

Is MisuJob free for job seekers?

Yes, MisuJob is completely free for job seekers. Create your profile, get matched with jobs, and apply without any cost. We help you find your dream job without any hidden fees.

How does AI matching work?

Our AI analyzes your resume, skills, and experience to understand your professional profile. It then compares this against job requirements using natural language processing to calculate a match percentage. Higher matches mean better fit for the role.

Can I apply to jobs in other countries?

Absolutely. MisuJob features jobs from companies worldwide, including remote positions. Filter by location or look for remote opportunities to find jobs that match your preferences.

Ready to Apply?

Join thousands of job seekers using MisuJob's AI to find and apply to their dream jobs automatically.