Senior Fullstack Developer | Remote

Description

nstech is the largest technology and software platform for logistics and supply chain in Latin America. It connects the entire transportation chain — shippers, carriers, brokers, and drivers — within a single digital ecosystem to make operations more efficient, secure, and cost-effective. KMM is part of this ecosystem, offering solutions focused on transportation management, logistics operations, and process integration, helping companies gain efficiency, control, and predictability. Here, we seek people who want to learn, build, and create impact in a market essential to the country. We are looking for a **Senior Fullstack Developer** to join our team and contribute to the evolution of our **TMS (Transportation Management System)**. In this role, you will be responsible for developing new features and maintaining critical capabilities that optimize our customers’ logistics and transportation operations. The challenge involves working in an environment with robust business rules and complex operational workflows. We seek a professional with solid backend development experience using **C#/.NET**, as well as experience with modern frontend technologies — always prioritizing performance, stability, and quality in a system essential to our customers’ operations. Responsibilities and Duties * Develop new features for the TMS. * Perform maintenance and enhancement of existing features. * Build and maintain REST APIs. * Develop solutions focused on stability, performance, and scalability. * Analyze, identify, and resolve complex software issues. * Contribute to continuous improvement of code quality and maintainability. Mandatory Requirements * Solid experience with **C#** and the **.NET** ecosystem, including **WebAPI** and **MVC**. * Advanced knowledge of **JavaScript**, and experience with mainstream frameworks such as **Knockout.js, Vue.js, React**, or **Angular**. + We currently use **Knockout.js**. If you lack direct experience with this technology, a strong foundational background enabling rapid adaptation is essential. * Experience with **SQL Server**, including writing queries, stored procedures, and relational database modeling. * Solid knowledge of **HTML5, CSS3**, and **DOM** manipulation. * Experience building and consuming **REST APIs**. * Proficiency with **Git** for source code versioning. * Ability to investigate, debug, and resolve complex technical issues. Desirable Requirements * Experience using Artificial Intelligence tools for development — such as **GitHub Copilot, Cursor, ChatGPT, Gemini**, or **Claude** — to enhance productivity, refactor code, and solve problems. * Experience in logistics companies or projects, especially involving **TMS**, **ERP**, or fleet and warehouse management systems. * Knowledge of the **MVVM** architectural pattern. * Experience with messaging systems (**RabbitMQ**) and third-party Web Services integrations. * Understanding and application of **Clean Code** principles. Behavioral Competencies * Analytical and solution-oriented mindset. * Ability to thrive in environments with complex business rules. * Capacity to propose efficient and sustainable solutions. * Commitment to application quality, stability, and performance. * Ability to learn quickly and adapt to new technologies. ### **Differentiators** * Prior experience with logistics and transportation systems. * Hands-on experience with **Knockout.js**. * Familiarity with modern development practices supported by Artificial Intelligence tools. **Benefits** * Health insurance plan with co-payment and possibility of including dependents, per current policy. * Dental plan, with free choice among available options. * Meal voucher. * Wellhub/Gympass. * Zenklub: two monthly consultations at no cost. * Life insurance at no cost. * Funeral assistance at no cost.