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Full Stack Software Developer with 14 years of experience delivering web and mobile applications across Fin Tech, Learning Management Systems, Internet Marketing, Chat bots, and Real Estate. Contributed to 30+ projects from concept to deployment, with a strong focus on clean architecture, performance, and user experience.…

Ilia

Full Stack Developer, AI Prompt Engineer

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Full Stack Software Developer with 14 years of experience delivering web and mobile applications across Fin Tech, Learning Management Systems, Internet Marketing, Chat bots, and Real Estate. Contributed to 30+ projects from concept to deployment, with a strong focus on clean architecture, performance, and user experience.…

Available to hire

Full Stack Software Developer with 14 years of experience delivering web and mobile applications across Fin Tech, Learning
Management Systems, Internet Marketing, Chat bots, and Real Estate. Contributed to 30+ projects from concept to
deployment, with a strong focus on clean architecture, performance, and user experience.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Beginner

Language

English

Advanced

Spanish; Castilian

Beginner

Russian

Fluent

Work Experience

Frontend Developer at Invent.us (Integrated Digital Ecosystem Solutions)

May 1, 2024 - Present

Remote / On-site: Maintained a large-scale enterprise codebase, reducing technical debt and improving system stability. Delivered complex user interfaces in collaboration with designers, boosting client satisfaction. Built a UI kit and platform features, cutting design-to-development turnaround by 30%. Implemented high-complexity features previously postponed, accelerating product roadmap progress. Built a proof-of-concept mobile app (React Native + Expo) enabling future mobile product expansion.

Full Stack Developer at Pleeco (FinTech and Low-Code Platform)

April 30, 2024 - September 19, 2025

Contributed to the development of a low-code platform. Built and integrated a reusable component library and design system, reducing UI development time by 40%. Developed and maintained a widget library used in 80% of client apps, saving engineering hours. Enhanced scalability and reporting by embedding real-time data visualization (D3.js, Vega/Vega-Lite). Authored custom Babel and PostCSS plugins.

Full Stack Developer at Finalem

May 31, 2017 - September 19, 2025

Developed a React Native driving exam app with 5,000+ downloads and strong user engagement. Built and deployed a Slack chatbot used by 10,000+ users, extending company reach into conversational platforms. Set up CI/CD pipelines, reducing release cycle times by 30% and cutting deployment errors by 50%. Contributed to system design and backend development across 4 startup products, supporting rapid MVP launches.

Web Developer at Advantika (Digital Marketing and Web Development Agency)

February 28, 2015 - September 19, 2025

On-site: Maintained and optimized 40+ e-commerce websites, ensuring 99.9% uptime. Improved organic traffic for clients by 60% through SEO and performance optimization. Managed IT infrastructure, reducing system downtime by 40% via proactive administration.