About Sergio
Spanish
Native or bilingual
English
Fluent
Experience
- INNOCV SolutionsFrontend Lead - Donation and Parish Management Platform (dona+CIVIC AND SOCIAL ORGANIZATIONSJanuary 2025 - May 2026 (1 year and 4 months)Madrid, SpainLed from the Frontend area the integral development of dona+, a digital ecosystem designed to modernize donation collection, optimize parish administration, and automate tax benefits for users.Multi-role SPA Architecture (React): Design and development of the main management application in React (consuming ASP.NET services). I structured the platform into two main areas within the same SPA: a global dashboard for administrators and a dedicated portal for parish priests.Parish and Tax Management (UX/UI): Implementation of interfaces for parish priests to manage their churches, register new parishes, monitor donations, and execute core functionality: the generation and automated tax relief for tax certificates each fiscal year.Security and Authentication: Implementation of the client-side security layer. During the development cycle, I executed the adaptation and migration of the authentication system from Azure MSAL to the new Microsoft Entra ID standard, managing both integrations to ensure a secure and frictionless transition for users.Donor Ecosystem (KMP): Coordination of the web platform with the mobile application for end-users (donors), developed in Kotlin Multiplatform (KMP), ensuring a consistent experience throughout the donation cycle.Performance and Fundraising (Astro & Next.js): Development of the public web strategy. Initially, I implemented a high-conversion and high-performance landing page in Astro. Later, to scale the project, I led the migration to a headless architecture using Next.js integrated with Magnolia CMS in serverless format, giving full autonomy to the content team.
- INNOCV SolutionsFrontend LeadLOGISTICS AND SUPPLY CHAINSeptember 2024 - January 2025 (4 months)Madrid, SpainLed from the Frontend area the development of the main CMS for Linde's logistics management, a key platform designed to centralize and optimize the control of transports, users, and delivery notes.CMS Architecture: Design and development of the web platform (SPA) using React, ensuring seamless integration with the business logic in ASP.NET.Management Dashboards and Roles: Building dynamic and secure role-based interfaces for comprehensive management of the transport cycle, from shipment creation to user management and delivery note control.Cross-Platform Integration (KMP): Coordinated the coexistence of the CMS with the transporters' application (Kotlin Multiplatform). We replicated the app's functionalities within the web environment itself, allowing drivers to operate seamlessly both from the downloadable mobile app and from the browser.Traceability and Visibility (UX): Designed and implemented the views that solved the company's traceability problem. The CMS allows real-time monitoring of the status and location of goods, also integrating the standard barcode reading flow from warehouses.Security and Infrastructure: Integration of enterprise authentication using Azure MSAL on the client side, working on a highly scalable and Dockerized deployment environment.
- INNOCV SolutionsSenior Frontend Developer - Strategic Projects (EVO Banco)BANKING AND INSURANCEMarch 2022 - September 2024 (2 years and 6 months)Madrid, SpainAs the frontend lead for the team, I executed the implementation of high-priority digital products for the institution:Conversion Funnels: Developed custom applications with Angular for the acquisition of investment products (deposits) and financing (pre-approved loans), optimizing the bank's digital sales funnels.Web Ecosystem: Maintenance and creation of digital assets on OpenCMS, using Vanilla JS and solid CSS architecture to ensure minimal loading times on the corporate website.Senior Integration: Worked closely with backend and product areas to translate banking business requirements into functional, robust, and secure interfaces.
Recommendations
Be the first to recommend Sergio
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Productivity Tricks for Programmers Certificate of completionClaude Platform 101Trucos de productividad para programadores Certificate of completion
- Certificate of completionClaude 101Certificate of completion