International job opportunity!! English – Fluent/NativeSenior Tec-Lead (C#,.Net,React)R$ 25.000,00 como PJ ( US 5k )Project Duration = 12_Plus❗❗ RequiredEnglish – Fluent/Native02+ Tec-Lead10+ C#, .NET08+ Years React10+ years of professional software development experienceStrong expertise in C#, .NET, and Web API developmentSolid frontend experience with React, JavaScript, HTML, and CSSProven ability to work effectively across the full stackExperience with relational databases (SQL Server, MySQL, PostgreSQL) and ORM frameworks (e.G., Entity Framework)Experience developing and operating applications in cloud environmentsDemonstrated leadership skills, such as mentoring engineers, leading technical discussions, or owning key technical initiativesStrong problem‑solving and communication skillsAbility to work collaboratively in a cross‑functional teamBachelor’s degree in Computer Science, Engineering, or related field or equivalent work experienceDescriptionRole: Senior Full-Stack Developer (C#, .NET, React) with Lead SkillsLocation: Latin America (Only Argentina, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Peru, or Puerto Rico.)Reporting to: Director of EngineeringContract type: Employee of Record (EOR)Position OverviewWe’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 systemsHas previous experience leading or mentoring other engineersIs 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.ResponsibilitiesDesign, develop, and maintain scalable, secure, and reliable full‑stack web applications using C#, .NET, and ReactOwn technical solutions end‑to‑end, spanning backend services, APIs, frontend interfaces, and data persistenceCollaborate with product managers and stakeholders to translate business requirements into sound technical designsContribute to architectural decisions and system design with a focus on long‑term maintainability and scalabilityWrite clean, well‑tested, and maintainable code aligned with engineering best practicesReview code and provide constructive feedback, helping uphold a high standard across the teamTroubleshoot and resolve issues across the stack in a timely and thoughtful mannerParticipate actively in agile development processes, including sprint planning and retrospectivesProvide mentorship, guidance, and technical leadership to other engineers as situations arisePreferred QualificationsPrior experience acting as a technical lead, project lead, or senior engineer with team‑level influenceComfortable providing technical direction and guidance without formal people‑management responsibilityProficiency with Azure cloud servicesExperience with DevOps practices, CI/CD pipelines, and automationFamiliarity with containerization technologies such as DockerWorking knowledge of PostgreSQL, including performance tuningExposure to modern data platforms and analytics solutions (Snowflake preferred)BenefitsCompetitive salarySelf‑directed PTOFlexible work locationFlexible working hoursOccasional international travel