Portfolio – Freelance Web Developer. Real Projects, Measurable Results
As an independent freelance web developer, I work both on my own digital products and as a technical contributor for companies and agencies across various projects.
My portfolio is structured around two complementary areas: complete personal projects that I independently design, develop, and maintain, and targeted technical contributions delivered for professional clients — including integrations, specific feature development, optimizations, and team support.
Outside of my personal projects, I have collaborated with various companies and digital agencies on focused technical assignments: developing specific features, integrating components, improving performance, fixing issues, and supporting ongoing development on existing projects. These interventions do not represent fully authored standalone projects under my name, as they are integrated into existing systems. However, they demonstrate my ability to quickly adapt to different technical environments, work within teams or independently, and deliver precise results within defined deadlines.
These three platforms are fully built and maintained by TattooNumeric. From initial design to production deployment, including SEO, security, and ongoing maintenance.
Crypto Cloud Mining Platform | SaaS Fintech
MiningNumeric is a cloud mining cryptocurrency platform that I fully designed and developed. It allows users to participate in Bitcoin and other cryptocurrency mining in a simple, secure, and profitable way, without the need for specialized hardware.
The project includes an authentication system, a real-time user dashboard, investment plan management, and a cloud infrastructure optimized for performance and security. The interface is designed to be accessible for beginners while meeting the needs of advanced users.
Stack & skills: Full-stack development, UX/UI design, crypto API integration, web security, technical SEO, cloud hosting.
Adult Online Community | Niche Social Network
JugarFantasia is an inclusive and secure community platform for adults, focused on freedom of expression, exploration, and connections between people with shared interests. The website was built to provide a welcoming, modern space while respecting user privacy.
I managed the entire project lifecycle: technical architecture, interface design, user registration and profile system, moderation, legal compliance, and SEO optimization for a competitive Spanish-speaking niche.
Stack & skills: Full-stack development, community management, Spanish SEO, privacy & GDPR compliance, UI/UX design.
Bill Payment Service in Paraguay | Local Fintech
PayBillsParaguay is a fintech solution I developed to address a real and underserved need in Paraguay: enabling anyone, including users without a Paraguayan ID (cédula), to pay their bills (ANDE, ESSAP, Tigo, Claro, Personal) online quickly and securely.
This project primarily targets expatriates, tourists, and foreign residents who face local administrative barriers. It demonstrates my ability to identify a market opportunity, design a suitable product, and independently bring it to production.
Stack & skills: Web development, payment integration, conversion-focused UX, local SEO (Paraguay), regulatory compliance.
Frequently Asked Questions
What is TattooNumeric and what services does it offer?
TattooNumeric is the brand name of a Canadian freelance full-stack web developer based in Paraguay. It specializes in custom website development, web applications, and SaaS platforms with a strong focus on performance, SEO optimization, and user experience.
What types of web development projects does TattooNumeric build?
TattooNumeric develops business websites, SaaS platforms, fintech applications, online communities, API integrations, and SEO-optimized web systems designed for scalability, performance, and conversion optimization.
What is TattooNumeric’s approach to SEO and AI optimization?
TattooNumeric uses a combined strategy of SEO (Search Engine Optimization), AEO (Answer Engine Optimization), and GEO (Generative Engine Optimization) to improve visibility on Google and AI-powered search engines.
Does TattooNumeric provide website maintenance and support?
Yes, all projects include ongoing maintenance such as security updates, performance optimization, bug fixes, and scalability improvements to ensure long-term stability.
Does TattooNumeric work with international clients?
Yes, TattooNumeric works with clients worldwide including North America, Europe, and Latin America, delivering remote web development services adapted to different markets and business needs.
Does TattooNumeric build personal SaaS projects?
Yes, in addition to freelance work, TattooNumeric builds personal SaaS platforms, fintech systems, and web applications to test real-world ideas and demonstrate advanced technical expertise.