Serhii Makarov

• Stakeholder & Business Alignment: Close collaboration with stakeholders and product owners to define, refine, and prioritize requirements, translating business requirements into scalable frontend architecture decisions.
• Enterprise-Grade Delivery & Ownership: End-to-end responsibility for building an enterprise-grade SaaS application supporting mission-critical workflows and professional users.
• Architectural Decisions & Standards: Contribution to key architectural decisions; led the migration to a Turbo Monorepo, establishing best practices, patterns, and modular design systems for a maintainable frontend ecosystem.
• Data-Intensive UI & Complexity: Handled data-intensive applications with complex UI logic (e.g., visual editor using @dnd-kit) and global state management (Zustand) for real-time data synchronization and high-performance UI rendering.
• API & Backend Integration: Integration of complex REST and GraphQL APIs, handling asynchronous data flows and secure backend communication (Stripe, Google Calendar OAuth).

• Consulting & Interface: Acting as the primary interface between business stakeholders and cross-functional agile teams. Led requirement engineering, backlog refinement, and solution design.
• Scalable Architecture & Mentorship: Driving architectural decisions for scalable frontend ecosystems. Designed modular, reusable, and extensible UI systems while ensuring delivery accountability across a team of 10 developers.
• Prototyping & Product Discovery: Creation of UI concepts and rapid prototypes for complex frontend applications, translating abstract requirements into tangible UI solutions to support early-stage product development.
• AI Integration: Built custom AI Skill Agents and workflows to automate internal review processes and integrate intelligent features into the client platform.
• Mentorship & Quality: Conducted regular code reviews to foster engineering excellence, clean code practices, and mentored junior and mid-level developers.

• Web Development: Engineered 20+ responsive, data-intensive applications, focusing on workflow-oriented UI logic and advanced data synchronization, significantly improving user decision-making processes.
• Business-Critical Systems: Development of complex, large-scale frontend systems with advanced data flows, filtering, aggregation, and interaction flows for diverse B2B clients.
• Performance Engineering: Focused on frontend performance optimization and rendering efficiency, achieving perfect Lighthouse scores and significant Core Web Vitals improvements.
• Quality Assurance: Implementation of comprehensive testing strategies (unit, integration) and ensuring inclusive, accessible frontend solutions (WCAG compliance).

Enabled informed decision-making through technical consulting and structured solution design, delivering customized, scalable web architectures for cross-industry clients utilizing modern CMS platforms and web technologies.