Francisco Silva

Skills: Front-End Development · Back-End Web Development

Built the merchant checkout platform (Next.js, React, Tailwind CSS), embedded in 400+ stores; processed over €60M/month with 99.99% uptime and <150ms response times. Developed consumer onboarding portal (Vue 3, Pinia, Node.js) with async ID upload and status polling - reduced sign-up time from 8 to 4.3 minutes and improved KYC success by 30%. Engineered real-time fraud scoring microservices (NestJS, Redis Streams, PostgreSQL), analyzing 300K+ transactions/day - lowered manual review workload by 28%. Built and maintained loan scoring and risk APIs (Node.js, Express, PHP 7, PostgreSQL), supporting dynamic credit rules and historical audit trails across 3 markets. Created GraphQL API gateway (Apollo, NestJS, Redis) to unify finance, cart, and product services-reduced client-side calls by 40% and improved API observability. Implemented compliance admin panel (Angular 14, NestJS) for legal teams to manage onboarding rules and disclaimers-used across Sweden, Finland, and Norway. Contributed to legacy platform modernization (.NET Core → Node.js + PHP + NestJS), migrating 3 services to TypeScript with 85% test coverage and 40ms faster response times. Delivered features in Agile squads (Jira, GitHub Actions, Docker) with QA, PMs, and designers-shortened cycle time by 35% and improved stakeholder sign-off predictability. Integrated Strapi CMS to manage marketing pages and legal content dynamically-enabled non-tech teams to update 50+ customer-facing assets without developer support.

Developed core loan origination logic (Java Spring Boot, PostgreSQL), supporting ID checks, eligibility scoring, and submission flows used by 150K+ customers. Built backend services for SEPA transfers and balance tracking (PHP 7, REST APIs), enabling same-day bank disbursements with automated reconciliation. Created account management dashboard (React.js, Redux, SCSS) for end-users to view statements, schedule repayments, and manage support requests. Integrated real-time alert system (Java, RabbitMQ) for transactional SMS/email messages-scaled to 2M+ monthly notifications with error monitoring. Implemented secure authentication flow (OAuth2, JWT), reducing session-related support tickets by 40% and meeting GDPR audit standards. Led backlog grooming and sprint planning (Jira, GitLab CI) for risk-focused APIs-reduced blocker resolution time by 35% and improved release quality.

Developed core modules for shop management (PHP, MySQL, JavaScript), including product catalogs, inventory tools, and shipping settings. Built and optimized the checkout engine (PHP, jQuery), improving load speed by 28% and reducing abandoned carts during peak campaigns. Created responsive storefront templates (SCSS, Bootstrap), delivering 10+ mobile-optimized themes with built-in localization (EN, ES, FR). Improved payment gateway reliability (REST APIs, PayPal, Stripe), cutting failed transactions by 30% through retry and fallback logic. Worked in 2-week sprint cycles with QA and product to deliver tested shop features; supported over 40 stable production releases.