Summary: Seeking a Senior Fullstack Engineer to independently lead software design and development activities in a complex environment, proactively addressing client needs. Highlights: 1. Lead software design and development activities autonomously 2. Proactively address internal/external client needs and offer advice 3. Act as a key contributor in a complex environment Aguascalientes, Guadalajara, Mexico City Senior Fullstack Engineer Required Qualifications * 5\+ years of experience in software engineering. * Experience writing code in JavaScript/TypeScript, HTML5, CSS3, or related applications. * Experience with front\-end technologies and frameworks, preferably React. * API design and development experience using NestJS and Node.js. * Experience with application, network, and cloud security. * Experience with building and architecting microservices. * Strong computer science fundamentals and problem\-solving/analytical skills. * Familiarity with version control systems (e.g., Git). * Understanding of agile software development lifecycle and DevOps principles. * Strong verbal and written communication skills, including the ability to communicate and explain technical decisions. * Good written and spoken English proficiency is required; this role involves regular communication with US\-based stakeholders via Slack, Azure DevOps, and video calls. Preferred Qualifications * Experience writing unit tests using testing frameworks such as Mocha, Jest, etc. * Understanding of SaaS (Software as a Service) product architectures, AWS/Azure/Google Cloud Stack, and networking. * Familiarity with developer tools like Claude Code. Experience with designing AI\-enhanced systems such as Model Context Protocol (MCP), Retrieval\-Augmented Generation (RAG) pipelines, and vector databases (e.g., Pinecone, Weaviate). Education Bachelor’s degree in Computer Science or equivalent work experience. Job Description Job Description \- Grade Specific Is fully competent in its own area and has a deep understanding of related programming concepts software design and software development principles. Works autonomously with minimal supervision. Able to act as a key contributor in a complex environment, lead the activities of a team for software design and software development. Acts proactively to understand internalorexternal client needs and offers advice even when not asked. Able to assess and adapt to project issues, formulate innovative solutions, work under pressure and drive team to succeed against its technical and commercial goals. Aware of profitability needs and may manage costs for specific projectorwork area. Explains difficult concepts to a variety of audiences to ensure meaning is understood. Motivates other team members and creates informal networks with key contacts outside own area. Ref. code 447822\-en\_US Posted on 30 Mar 2026 Experience level Experienced Professionals Contract type Permanent Location Aguascalientes, Guadalajara, Mexico City Business unit Other Delivery units Brand Capgemini Professional communities Software Engineering