Nicolai Calinin

- Lead frontend engineering across three core products, a fourth product in development, and several supporting web applications, managing a team of 3 frontend engineers.
- Lead frontend architecture for a large internal CRM spanning ~50 route-level screens, 15 product domains, and ~200 API operations.
- Introduced a Codex-based development workflow across the frontend team, with repository-level

- Designed a configuration-driven multi-tenant frontend platform with an isolated core/demo environment and two branded tenants, using shared client and admin applications with route-level UI variations, feature flags, and role-based access.
- Built the frontend of a real-time video platform from scratch with one backend engineer using Amazon Chime SDK, including client-side state synchronization

- Led frontend development for an AI-powered e-commerce image production tool, working with a junior frontend engineer and closely with design, backend, ML, QA, DevOps, and the founder.
- Designed and built a multi-layer scene editor with Fabric.js, supporting object transforms, layer management, crop, undo/redo, and automatic repositioning of scene elements across different canvas sizes and aspec

- Developed a large-scale e-commerce fulfillment platform to streamline order processing, logistics, and distribution workflows.
- Designed and implemented a Warehouse Management System (WMS) with integrated barcode scanning, improving inventory tracking and operational efficiency.
- Built an embeddable checkout widget for integration into third-party websites, enabling seamless purchasing flows a

Developed a CRM system for messenger marketing, which included the creation of custom embedded widgets and chatbots to enhance user engagement and automation.

Developed a marketplace for applications, enabling users to make purchases using various cryptocurrencies.

Worked as Middle / Junior Frontend Developer at Other projects and freelance.

Nov 2024

Nov 2017