Denis
Belevtsov

Senior Magento Frontend Architect | Hyvä Expert | Performance Engineer

10+ Years Experience

Work Experience

Magento 2 Frontend Developer | 10+ Years Experience

  • Themes Architecture

    Architected reusable, high-performance Magento 2 parent-child theme structures and built a standardized theme library deployed across all company projects. Provided frontend architectural direction, conducted code reviews, and established modern performance standards across the team—ensuring scalability, code consistency, rapid onboarding, and long-term maintainability.

  • Module Ecosystem Management

    Spearheaded integration and deep customization of complex 3rd-party modules and themes, ensuring seamless compatibility with core business logic and frontend requirements — zero breaking changes across deployments.

  • Storefront Performance Optimization

    Directed Luma and Hyvä optimization strategies for 10+ enterprise projects, owning the full lifecycle from technical auditing and issue prioritization to module refactoring and 3rd-party widget performance tuning — delivering measurable improvements in Core Web Vitals.

  • Luma to Hyvä Migration

    Planned and executed the migration of Luma UI to Hyvä across multiple projects, tracking performance deltas throughout the process to validate improvements and ensure a smooth transition with zero downtime.

Achievements

Key results and contributions to projects

  • Performance Restoration

    Led the architectural overhaul of legacy Magento 2 installations, resolving deep-seated bottlenecks and modernizing outdated frontend stacks. Migrated 5+ Luma projects to Hyvä, pulling websites out of the "red" performance zone and into the "green" — zero CLS and measurable, sustained improvement across Core Web Vitals.

  • Project Scale

    Delivered the full lifecycle of 20+ Magento 2 storefronts, from greenfield implementations to enterprise-scale platforms, successfully adapting each solution to unique business requirements.

  • Compatibility Architecture

    Engineered Hyvä compatibility modules for complex 3rd-party extensions and successfully migrated internal legacy Luma modules to the Hyvä ecosystem — eliminating compatibility blockers and ensuring feature parity.

  • Checkout Specialization

    Designed and implemented complex Magento 2 Checkout customizations, extending and refactoring core checkout flows to support sophisticated business requirements, third-party integrations, and high-conversion user experiences.

  • CMS Innovation

    Implemented advanced PageBuilder extensions and custom content types, empowering marketing teams to manage sophisticated layouts independently — eliminating developer bottleneck for content updates.

Soft Skills

Professional Soft Skills

  • Technical Leadership & Mentorship

    Spearhead architectural direction and provide technical mentorship to elevate team capabilities in Hyvä, Alpine.js, and complex backend debugging.

  • Stakeholder & Business Alignment

    Proven ability to translate complex technical metrics (Core Web Vitals, conversion rates) into clear business value for non-technical stakeholders.

  • Decision Making & Prioritization

    Skilled at evaluating technical trade-offs and prioritizing high-impact solutions, balancing business goals with engineering constraints to drive the best outcomes.

  • Ownership & Accountability

    Take full ownership of project outcomes from discovery through deployment, proactively communicating risks and ensuring alignment with business objectives.