![Seif Sendi](https://jobicy.com/react/themes/app/images/avatar.jpg) Seif Sendi # Senior Full-Stack Developer | Fintech & Payments Specialist Open to offers · Member since 28 Jul 2026 [Message](https://jobicy.com/enter4715.php.md) ShareLocationTunis, TunisiaDesired salaryUnspecifiedWork preferenceRemote Only / Part Time, FreelanceExperience levelSenior * [Overview](#overview) * [Portfolio 0](#portfolio) * [Services 0](#services) ## About Professional summaryI am a Senior Full-Stack and Mobile Developer with more than eight years of experience building fintech platforms, secure payment systems, and cross-platform mobile applications. I specialize in designing and delivering end-to-end payment products, including digital wallets, KYC and compliance integrations, payment gateway flows, card processing, cash-in/cash-out operations, transaction settlement, reconciliation, and invoicing. My core technical expertise includes PHP, Laravel, JavaScript, React Native, REST API architecture, MySQL, PostgreSQL, Redis, Docker, and CI/CD practices. I have also worked with Symfony, Zend Framework, Expo, Swagger/OpenAPI, and mobile deployment for Android and iOS. I have led backend engineering teams and delivered production banking and payment products, including integrations with Treezor, Stripe, Mastercard, and Ingenico. I am comfortable owning technical architecture, backend development, API integration, deployment, maintenance, and release management. As the founder and sole developer of Saveet, I independently manage the complete lifecycle of a personal finance application, from product development and cloud synchronization to App Store and Google Play publishing, SEO, ASO, subscriptions, and multilingual support. I am an independent, product-minded engineer who combines hands-on development experience with fintech domain knowledge and team leadership capabilities. ## Skills 25 capabilities[API Integration](https://jobicy.com/talent/api-integration.md)[ASO](https://jobicy.com/talent/aso.md)[Backend Development](https://jobicy.com/talent/backend-development.md)[Card Processing](https://jobicy.com/talent/card-processing.md)[Compliance](https://jobicy.com/talent/compliance.md)[Fintech](https://jobicy.com/talent/fintech.md)[Frontend Development](https://jobicy.com/talent/frontend-development.md)[Invoicing](https://jobicy.com/talent/invoicing.md)[JavaScript](https://jobicy.com/talent/javascript.md)[KYC](https://jobicy.com/talent/kyc.md)[Laravel](https://jobicy.com/talent/laravel.md)[Mentoring](https://jobicy.com/talent/mentoring.md)[Mobile Development](https://jobicy.com/talent/mobile-development.md)[Organic Growth](https://jobicy.com/talent/organic-growth.md)[Payment Processing](https://jobicy.com/talent/payment-processing.md)[Payment Systems](https://jobicy.com/talent/payment-systems.md)[PHP](https://jobicy.com/talent/php.md)[Product Architecture](https://jobicy.com/talent/product-architecture.md)[React Native](https://jobicy.com/talent/react-native.md)[Release Management](https://jobicy.com/talent/release-management.md)[SEO](https://jobicy.com/talent/seo.md)[Subscription Management](https://jobicy.com/talent/subscription-management.md)[Symfony](https://jobicy.com/talent/symfony.md)[Team Leadership](https://jobicy.com/talent/team-leadership.md)[Zend Framework](https://jobicy.com/talent/zend-framework.md) ## Tech stack & tools Working toolkit ### Application Hosting [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/redis/redis-original.svg) Redis](https://jobicy.com/talent?tool=redis.md) ### Application Utilities [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/openapi/openapi-original.svg) OpenAPI](https://jobicy.com/talent?tool=openapi.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/swagger/swagger-original.svg) Swagger](https://jobicy.com/talent?tool=swagger.md) ### Data Stores [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/mysql/mysql-original.svg) MySQL](https://jobicy.com/talent?tool=mysql.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/postgresql/postgresql-original.svg) PostgreSQL](https://jobicy.com/talent?tool=postgresql.md) ### Development [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/docker/docker-original.svg) Docker](https://jobicy.com/talent?tool=docker.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/git/git-original.svg) Git](https://jobicy.com/talent?tool=git.md) ### Languages & Frameworks [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/expo/expo-original.svg) Expo](https://jobicy.com/talent?tool=expo.md) ## Experience Career history ### Founder & Solo Developer (Part-time) · Saveet Oct 2025 – PresentI independently design, build, and maintain Saveet, a cross-platform personal finance and budgeting application. I own the product, backend, mobile application, and release process as the sole developer. I implemented secure payment-management capabilities, cloud data synchronization, multilingual support in four languages including Tunisian dialect, dark mode, and subscription handling. I also manage App Store and Google Play publishing, SEO, ASO, and organic growth activities. ### Freelance Full-Stack Developer · PSP Client Project Oct 2025 – PresentI serve as the sole developer for a major freelance client operating a Payment Service Provider platform. I manage payment gateway integrations, transaction settlement, invoicing, and related fintech platform capabilities. I own the technical work end-to-end, including architecture, API integration, payment-processing flows, reconciliation, reporting, deployment, and ongoing maintenance. ### Team Leader, Backend Development · Hamtel Sobflous Apr 2022 – Oct 2025I led backend development for the Sobflous payment platform, a production fintech system supporting wallet and transaction operations. I designed and delivered ForTun, a banking product built on the Treezor platform. The product integrated KYC verification, digital-wallet management, and core banking APIs. ### Full-Stack Developer · Centurion & Co Apr 2020 – Mar 2022I built and maintained fintech platforms with third-party payment-provider integrations, including Stripe, Mastercard, and Ingenico. I developed merchant-facing dashboards and crypto-to-fiat conversion features for payment-processing clients. ### Web Developer · Mobiblanc Oct 2019 – Apr 2020I maintained and optimized the AMDIE platform as a web developer. My work focused on improving the platform's reliability and performance. ### Web Developer · Hamtel Sobflous May 2018 – Oct 2019I worked on the Sobflous platform as a web developer. I migrated the platform to Zend Framework 2, improving its maintainability and performance. ## Education Learning history ### ISAMM 2016 – 2018Master's, Business Intelligence Master's degree in Business Intelligence. ### ISAMM 2013 – 2016Bachelor's, Computer Science & Multimedia Bachelor's degree in Computer Science and Multimedia. This professional hasn’t added portfolio projects yet. 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