Iaroslav Fedorenco
Full-stack developer, devivering quality projects in time
New to Contra
Iaroslav is ready for their next project!
Building Blockchain Infrastructure and SEO-Driven Web Platforms at ConstructKoin
Working as a Senior Blockchain Engineer at ConstructKoin gave me the opportunity to build both blockchain infrastructure and scalable web systems in the Web3 and real-estate finance space.
ConstructKoin is building an AI-powered real-estate backed blockchain finance ecosystem, combining tokenized finance with real-world asset-backed lending. ()
My role covered smart contract architecture, presale systems, dashboard development, and SEO-focused web platforms.
Built and deployed the token presale smart contract, handling token distribution logic, purchase validation, and secure presale workflows.
Designed the blockchain transaction flow for investor participation, wallet integrations, and token claiming systems.
Developed the admin panel for managing users, token sales, analytics, and platform operations.
Built the user dashboard where investors could track purchases, manage allocations, and monitor token-related activity.
Developed backend systems using Node.js for secure API management, user authentication, transaction tracking, and dashboard operations.
Built frontend systems using React.js to create fast, scalable, and user-friendly investor experiences.
Integrated wallet connection systems and payment workflows for seamless token purchases.
Worked on blockchain logic optimization, contract interaction handling, and transaction reliability improvements.
Built and optimized WordPress websites for marketing and organic growth with strong technical SEO foundations.
Improved SEO performance through optimized architecture, Core Web Vitals improvements, structured data, metadata systems, and search indexing optimization.
Implemented scalable content structures and conversion-focused landing pages to support token marketing campaigns.
This experience allowed me to combine blockchain engineering with product development and SEO strategy, building systems that were both technically strong and growth-focused.
Working across smart contracts, backend systems, frontend dashboards, and SEO-focused web platforms strengthened my expertise in full-cycle Web3 product development.
Blockchain products are not only about smart contracts — they need strong infrastructure, seamless user experiences, and scalable growth systems to succeed.
ConstructKoin was a great example of building all of those together.
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Building SEO-Driven WordPress & Shopify Systems at Absolute Digital
Working as a Senior Engineer at Absolute Digital gave me the opportunity to build and optimize high-performance SEO-focused digital platforms across WordPress and Shopify for multiple industries.
My role was focused on bridging technical development with SEO strategy, ensuring every project was built not only for performance and user experience, but also for long-term search visibility and organic growth.
Developed and optimized custom WordPress and Shopify websites with SEO-first architecture.
Built scalable theme systems and custom features focused on speed, flexibility, and conversion.
Improved Core Web Vitals by optimizing rendering performance, lazy loading, asset delivery, and server response times.
Implemented advanced technical SEO structures including schema markup, metadata systems, XML sitemaps, canonical structures, and crawl optimization.
Worked on Shopify storefront optimization, custom Liquid development, app integrations, and conversion-focused UX improvements.
Built custom WordPress themes and plugin solutions tailored for content-heavy SEO campaigns.
Optimized page speed, mobile responsiveness, and frontend performance to improve rankings and user retention.
Handled SEO migration projects including platform migrations, URL mapping, redirect systems, and indexing preservation.
Integrated analytics systems such as GA4, Google Tag Manager, Search Console, and custom event tracking.
Collaborated closely with SEO strategists to align development decisions with ranking goals, content strategy, and technical audits.
One of the most valuable parts of this experience was understanding how engineering decisions directly impact SEO performance, traffic growth, and conversion rates.
SEO is no longer just content and backlinks. Strong technical foundations, fast loading systems, clean architecture, and user-focused experiences are now critical ranking factors.
Working across multiple client projects helped me sharpen my ability to build websites that perform well technically, rank effectively, and scale efficiently.
This experience strengthened my expertise in technical SEO, WordPress engineering, Shopify development, performance optimization, and scalable web architecture.
Building for search visibility starts with building correctly from the foundation.
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Mawahib(AI 3D avatar)
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