Ionut Claudiu Trohonel

Senior Full Stack Developer at Pell Software

Owned end-to-end delivery of custom business software platforms using React, Next.js, and TypeScript, enabling clients to replace spreadsheet-driven processes with scalable, web-based workflows and reducing manual effort by 45%. Led frontend architecture for highly configurable forms, approval workflows, and role-based dashboards, improving reuse across client implementations and reducing UI duplication. Defined frontend state management, data-fetching, and component patterns to support complex, data-driven user experiences at scale. Integrated secure authentication and authorization flows using Auth0, OAuth 2.0, and JWTs, delivering seamless multi-tenant experiences while reducing access-related defects by 40%. Coordinated API interactions with backend teams and supported CI/CD pipelines, contributing to release reliability and performance improvements.

Senior Frontend Developer at Events Smarter

Led frontend delivery for a high-traffic event ticketing and discovery platform serving 200,000+ monthly users. Owned frontend architecture with React and Next.js (SSR), delivering fast, SEO-friendly interfaces. Designed frontend data-fetching strategies and UI state management aligned with REST and GraphQL APIs, reducing client-side defects by 60%, and improving end-to-end latency by 45%. Implemented advanced UI patterns for pricing, availability, and inventory views, ensuring accurate real-time updates during peak traffic and on-sale events. Integrated Algolia-powered search on the frontend with custom ranking, faceted filtering, and type-ahead suggestions, increasing event discoverability and conversion rates by 27%. Built secure authentication flows and Stripe integration, delivering reliable transactions and multi-tenant experiences.

Senior Frontend Developer at SIG Europe

Led frontend architecture and UI development of Celero One, a cloud-based workforce management and CRM platform used across 24 European markets, modernising modules with React, TypeScript, and component-driven design to improve maintainability and reduce UI bugs by 45%. Implemented responsive dashboards with React, Redux, and D3.js; collaborated on GraphQL API design and schema evolution; designed reusable design system components with Storybook; improved accessibility and localisations across 20+ languages; introduced feature flags and A/B testing patterns.

Junior Frontend Engineer at PODTECH

Collaborated with cross-functional teams to implement responsive UIs for enterprise applications using React and HTML5/CSS3; built reusable components and state management with React Hooks and Redux; integrated frontend modules with backend REST APIs; participated in legacy modernization by converting pages to component-based React views; contributed to agile ceremonies and ensured accessibility.