Functions: \- Collaborate in leading the design of architectures for critical systems. \- Make strategic technical decisions. \- Optimize performance of transactional systems. \- Implement high availability solutions. \- Collaborate with architects on standards. \- Research and implement new technologies. \- Negotiate technical vs. business requirements. \- Manage technical debt. Requirements: \- Bachelor's degree or professional title in Systems Engineering or related fields, with at least 5 years of experience in frontend development, including a minimum of 3 years in the banking sector. \- Advanced proficiency in JavaScript and TypeScript, as well as solid experience with React and/or Angular. The candidate must have deep knowledge of modern frontend architecture (micro\-frontends, JAMstack), advanced patterns (Server Components, SSR, ISR), and complex state management. Must have experience in: \- Design systems, component libraries, and build/bundling tools. \- Advanced testing (E2E, integration). \- Performance optimization, loading, strategic caching, and streaming rendering. \- Internationalization, localization, and accessibility (ADA, WCAG 2\.1 compliance). \- PWA applications with offline/online synchronization. \- Visualization of complex financial data. Regarding security, experience is required in: \- Advanced authentication and code auditing. \- Protection against attacks, security in local/session storage, and client-side encryption. \- Implementation of Content Security Policy (CSP) directives. \- Regulatory compliance in security for the financial sector (GDPR, CCPA). Additionally, must have experience in: \- Frontend performance monitoring (Web Vitals). \- Observability tools such as New Relic, Dynatrace, and Sentry. \- Development methodologies such as Agile and DevOps. Job type: Temporary Contract duration: 3 months Application question(s): * What is your salary range? * Can you work onsite in San Isidro? * Do you have advanced proficiency in JavaScript and TypeScript, and solid experience working with React or Angular in modern architecture projects (such as micro\-frontends, SSR, or JAMstack)? * Have you worked on frontend applications requiring high performance, advanced security (such as authentication, encryption, CSP), and regulatory compliance (GDPR, CCPA, WCAG)? * Do you authorize the use of your personal data according to Law No. 29733 to include you in our database and consider you for future selection processes and job opportunities? Workplace: Onsite employment