**Role purpose** You will be part of an interdisciplinary, international development team building scalable digital products for end customers, supply partners, and internal operations across 77 countries. As a Senior Full Stack Developer, you will play a key role translating business and customer needs into robust, scalable, and high\-performing applications, influencing both technical decisions and best practices. **Key activities \& responsibilities** * Design, develop, and maintain back\-end services and front\-end applications, leveraging modern frameworks and cloud\-native architectures. * Build and consume APIs and RESTful services, ensuring scalability, security, and performance. * Develop and optimize microservices\-based architectures using CI/CD practices. * Continuously improve existing applications by enhancing performance, reducing response times, and modernizing the tech stack. * Integrate third\-party platforms and services, ensuring proper alignment with integration, maintenance, and enhancement standards. * Write clean, maintainable, and well\-documented code across front\-end and back\-end. * Participate in architectural discussions, code reviews, and knowledge sharing to improve system consistency and code quality. * Ensure cross\-platform compatibility, responsiveness, and accessibility. * Write and execute unit and integration tests, maintaining high engineering standards. **Required competenciesTechnical \& functional** * Strong understanding of MACH architecture. * Solid experience with Clean Architecture, RESTful design patterns, and enterprise\-grade development. * Expertise in: * JavaScript (ES6\+) – TypeScript is a plus * React / ReactJS and Node.js * GraphQL * Python and/or Java * PostgreSQL, Elastic * Docker, Kubernetes (K8s), AWS * Kafka * DevOps practices and Headless architectures * Experience with Salesforce is a plus * Background in enterprise\-level software development and e\-commerce environments. **Soft skills** * Team player with strong collaboration skills. * Customer\-centric mindset and problem\-solving approach. * Clear communicator (technical and non\-technical stakeholders). * Self\-driven, proactive, and continuously learning. **Required experience** * 6\+ years developing user\-friendly, scalable applications across multiple devices. * 3\+ years working in Agile teams at scale. * Bachelor’s or Master’s degree in Information Technologies or related field. **Performance indicators** * Quality and scalability of delivered applications. * Clean, maintainable code. * Code quality and documentation standards. **Contract \& working conditions** * Contract type: Contractor / honorarios (project\-based, with strong possibility of renewal or extension). * Work schedule: Monday to Saturday, 10:00 a.m. – 6:00 p.m. * Workload: Full\-time (48 hours/week). * Compensation: $45,000 MXN net per month (contractor) This role is ideal for Senior developers seeking stability in a long\-term project while maintaining contractor flexibility. **Growth \& additional benefits** *(Applicable during extended contracts or transitions to longer\-term engagement)* * Continuous training and professional growth opportunities. * English classes fully paid by the company. * Financial support for professional certifications. **Mandatory requirements** * Personal computer equipment. * Stable, high\-speed internet connection (essential for daily video calls). * Active contact phone number. Job Types: Full\-time, Temporary Contract length: 6 months Pay: $45,000\.00 per month Experience: * developing full\-stack applications in production: 5 years (Required) Work Location: Remote