International job opportunity!!English – Fluent/NativeSenior Tec-Lead (C#,.Net,React) R$ 25.000,00 como PJ ( US 5k ) Project Duration =12_PlusRequired English – Fluent/Native 02+ Tec-Lead 10+ C#, .NET 08+ Years React10+ years of professional software development experience Strong expertise in C#, .NET, and Web API development Solid frontend experience with React, JavaScript, HTML, and CSS Proven ability to work effectively across the full stack Experience with relational databases (SQL Server, MySQL, PostgreSQL) and ORM frameworks (e.g., Entity Framework) Experience developing and operating applications in cloud environments Demonstrated leadership skills, such as mentoring engineers, leading technical discussions, or owning key technical initiatives Strong problem‐solving and communication skills Ability to work collaboratively in a cross‐functional team Bachelor's degree in Computer Science, Engineering, or related field or equivalent work experienceDescription Role:Senior Full-Stack Developer (C#, .NET, React) with Lead Skills Location:Latin America (Only Argentina, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Peru, or Puerto Rico.) Reporting to:Director of Engineering Contract type:Employee of Record (EOR)Position Overview We're looking for a Senior Software Engineer with strong full‐stack experience to help design, build, and scale our web applications. This is a hands‐on senior individual contributor role, but one that requires demonstrated leadership capabilities and engineering maturity. This role is ideal for an experienced engineer who: Thrives with end‐to‐end ownership of features and systems Has previous experience leading or mentoring other engineers Is motivated to grow into or continue in a technical leadership role, helping guide engineering standards, architecture, and team executionYou will be hired first and foremost for your ability to deliver high‐quality software end‐to‐end. At the same time, we expect senior engineers at Smartwyre to bring technical leadership—setting a high bar for code quality, design, collaboration, and ownership. While leadership responsibilities may not be required immediately, this role is well‐suited to someone who is comfortable stepping into leadership as opportunity arises, and whose experience positions them to do so effectively.Responsibilities Design, develop, and maintain scalable, secure, and reliablefull‐stack web applicationsusing C#, .NET, and React Own technical solutions end‐to‐end, spanning backend services, APIs, frontend interfaces, and data persistence Collaborate with product managers and stakeholders to translate business requirements into sound technical designs Contribute to architectural decisions and system design with a focus on long‐term maintainability and scalability Write clean, well‐tested, and maintainable code aligned with engineering best practices Review code and provide constructive feedback, helping uphold a high standard across the team Troubleshoot and resolve issues across the stack in a timely and thoughtful manner Participate actively in agile development processes, including sprint planning and retrospectives Provide mentorship, guidance, and technical leadership to other engineersas situations arisePreferred Qualifications Prior experience acting as a technical lead, project lead, or senior engineer with team‐level influence Comfortable providing technical direction and guidance without formal people‐management responsibility Proficiency with Azure cloud services Experience with DevOps practices, CI/CD pipelines, and automation Familiarity with containerization technologies such as Docker Working knowledge of PostgreSQL, including performance tuning Exposure to modern data platforms and analytics solutions (Snowflake preferred)Benefits Competitive salary Self‐directed PTO Flexible work location Flexible working hours Occasional international travel