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Senior Fullstack Developer (.NET/React)

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EngineeringFullstack Developer

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Quick Summary

Key Responsibilities

Lead the development and continuous improvement of enterprise web applications, building robust backend services with C# and .NET Core/.NET 5+ while delivering dynamic,

Requirements Summary

At least 5 years of professional experience in fullstack software development, with a proven track record of building, maintaining, and scaling web applications in fast-paced startup, consulting,

Technical Tools

EngineeringFullstack Developer

We are looking for an experienced Senior Fullstack Developer to design, develop, and scale enterprise-grade web applications using modern .NET and React technologies. In this role, you will take ownership of both backend architecture and frontend development, delivering reliable, high-performance solutions that support complex business needs. You will collaborate directly with North American clients and distributed engineering teams in a dynamic, agile environment. Your responsibilities will span API development, database architecture, cloud integration, and modern frontend engineering. Beyond writing high-quality code, you will contribute to architectural decisions, technical improvements, and engineering best practices. You will also have the opportunity to mentor other developers and influence the technical direction of meaningful projects. This is an excellent opportunity to work on challenging initiatives while continuously developing your technical expertise.

Fullstack Development: Lead the development and continuous improvement of enterprise web applications, building robust backend services with C# and .NET Core/.NET 5+ while delivering dynamic, responsive frontend experiences using React.js.

API Development and Integration: Design, develop, and maintain scalable ASP.NET Web APIs and integration layers to automate complex enterprise workflows and support client-facing digital solutions.

Frontend Architecture: Build modular and reusable component libraries, responsive interfaces, and maintainable frontend architectures using JavaScript, TypeScript, React Hooks, Context, and state management solutions such as Redux or Zustand.

Database Design and Optimization: Manage Microsoft SQL Server environments, including database schema design, data persistence, complex stored procedures, indexing strategies, and query performance optimization.

Cloud and DevOps Integration: Implement and maintain automated testing processes and CI/CD pipelines within cloud-native environments, primarily using Microsoft Azure, while following modern Git workflows and deployment practices.

Technical Quality and Architecture: Ensure application performance, scalability, maintainability, and security while proactively identifying technical debt and contributing to architectural improvements.

Code Reviews and Documentation: Conduct constructive code reviews, establish engineering best practices, and create clear technical documentation to support sustainable development.

Technical Leadership and Mentoring: Support and mentor junior and mid-level developers, sharing technical knowledge and promoting collaboration within distributed, agile engineering teams.

Client Collaboration: Work closely with US-based client stakeholders and engineering teams to understand business requirements, align technical solutions with project objectives, and ensure successful delivery.

Requirements

~2 min read

At least 5 years of professional experience in fullstack software development, with a proven track record of building, maintaining, and scaling web applications in fast-paced startup, consulting, or nearshore environments.

Backend Development: Advanced proficiency in C#, .NET Core/.NET 5+, and ASP.NET Web API, with strong experience designing and developing scalable backend architectures and RESTful services.

Frontend Development: Strong expertise in React.js, TypeScript, modern JavaScript, React Hooks, Context API, and frontend state management tools such as Redux or Zustand.

Database Expertise: Hands-on experience with Microsoft SQL Server, including complex database schema design, indexing, stored procedures, query optimization, and performance tuning.

Cloud and DevOps: Solid understanding of Git, automated CI/CD pipelines, software testing, and cloud-native development environments. Experience with Microsoft Azure is preferred, while AWS or Google Cloud Platform experience is also valuable.

Software Engineering Best Practices: Strong knowledge of software architecture, clean code principles, application performance optimization, automated testing, and technical documentation.

Technical Ownership: A proactive and autonomous mindset, with the ability to take responsibility for technical decisions, troubleshoot complex issues, manage technical debt, and navigate unfamiliar codebases independently.

Leadership and Collaboration: Experience participating in code reviews, mentoring other developers, and collaborating effectively within distributed, cross-functional engineering teams.

Communication Skills: Advanced written and spoken English proficiency is mandatory, with the ability to communicate confidently and collaborate in real time with US-based clients, engineering teams, and leadership.

Location: Currently based in Latin America and available for a fully remote engagement aligned with US-based teams.

What We Offer

~2 min read

100% Remote Work: Fully remote working arrangement for professionals based anywhere in Latin America.

Competitive Compensation: Attractive compensation in USD under a US contractor engagement.

Paid Time Off: Holidays off and paid time off (PTO).

Health Insurance Support: Access to a health insurance assistance program.

International Client Exposure: Opportunity to collaborate directly with high-growth US-based companies and experienced technology teams.

Modern Technology: Work with cutting-edge technologies, modern engineering practices, and challenging enterprise development projects.

Continuous Learning and Development: Access to AI-powered engineering tools, specialized training, Coursera Enterprise, and hands-on technical practice opportunities.

Long-Term Career Opportunities: Continuous project opportunities and the possibility of building a long-term professional career beyond individual assignments.

Career Development Framework: Structured professional growth opportunities through a comprehensive engineering career framework.

Collaborative Environment: High-touch onboarding, transparent leadership communication, professional recognition, and a culture that values trust, autonomy, and psychological safety.

How Jobgether works:

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

Why Apply Through Jobgether?

Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.

#LI-CL1

✓100% Remote Work: Fully remote working arrangement for professionals based anywhere in Latin America.

✓Competitive Compensation: Attractive compensation in USD under a US contractor engagement.

✓Paid Time Off: Holidays off and paid time off (PTO).

✓Health Insurance Support: Access to a health insurance assistance program.

✓International Client Exposure: Opportunity to collaborate directly with high-growth US-based companies and experienced technology teams.

✓Modern Technology: Work with cutting-edge technologies, modern engineering practices, and challenging enterprise development projects.

✓Continuous Learning and Development: Access to AI-powered engineering tools, specialized training, Coursera Enterprise, and hands-on technical practice opportunities.

✓Long-Term Career Opportunities: Continuous project opportunities and the possibility of building a long-term professional career beyond individual assignments.

✓Career Development Framework: Structured professional growth opportunities through a comprehensive engineering career framework.

✓Collaborative Environment: High-touch onboarding, transparent leadership communication, professional recognition, and a culture that values trust, autonomy, and psychological safety.