About Santiago Agustin
Spanish
Native or bilingual
English
Fluent
Italian
Fluent
Experience
- Quickstack.proFreelance Backend Developer & SaaS Solutions ArchitectSOFTWARE PUBLISHINGDecember 2024 - Today (1 year and 6 months)Madrid, SpainComprehensive development of backend and SaaS solutions for clients and startups in Europe.• Design and construction of scalable architectures using FastAPI, PostgreSQL, and cloud systems (Vercel, Docker).• Creation of custom SaaS platforms for user management, subscriptions, dashboards, and secure APIs.• Development of ClientPortal, a private platform for creative agencies that optimizes project delivery, manages client feedback, and enhances professional image.• Integration of automated workflows for continuous deployment (CI/CD) with GitHub Actions.• Focus on end-user experience to reduce support costs and facilitate adoption.Currently offering flexible solutions for startups, agencies, and businesses across Europe looking to scale their digital operations.
- Quickstack.proFreelance Backend Developer | SaaS & API SolutionsSOFTWARE PUBLISHINGMarch 2024 - Today (2 years and 3 months)Barcelona, SpainComprehensive development of a SaaS solution for internal process automation in medium-sized companies.🔹 Design and construction of a scalable backend with Python (FastAPI) and PostgreSQL, ensuring speed and security.🔹 Implementation of a public RESTful API for clients to easily integrate the service into their own platforms.🔹 Development of a web Dashboard (Next.js + Vercel) for managing users, subscriptions, and real-time reports.🔹 Integration of payment system via Stripe API to automate user sign-ups and renewals.🔹 Automatic deployment to production environments using Vercel + GitHub Actions for CI/CD.🔹 Complete technical documentation + post-launch support to ensure service continuity.Result → SaaS platform operational in production with real users, allowing the client company to save +60% of time on administrative tasks.Currently offering similar services for startups, agencies, and companies in Europe seeking custom backend or SaaS solutions.
- Quickstack.proFreelance Backend Developer — QuoteBuilder Web AppSOFTWARE PUBLISHINGDecember 2023 - March 2024 (3 months)Barcelona, SpainComprehensive development of QuoteBuilder, a web application for generating real-time custom quotes.• Design and development of the backend using Python (FastAPI) for dynamic quote generation logic.• Data modeling in PostgreSQL for managing templates, pricing rules, and clients.• Development of an administration panel for managing templates and users with restricted access.• Integration with a lightweight frontend for quick quote visualization and export.• Implementation of automatic deployment to production using Vercel + GitHub Actions.• Result → Reduced quote creation time from 40 minutes to less than 5 minutes, significantly increasing sales closing rates.
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Education
- IT Automation with PythonGoogle / Coursera2025Automatización de tareas, desarrollo de scripts, gestión de sistemas, uso de APIs.