Leonid Kuznetsov

Enterprise generative AI platform used by large companies for AI-assisted work.

• Build core product features for Writer’s agent platform, structuring how autonomous multi-step AI workflows are created, executed, and supervised.
• Engineered OAuth-based knowledge connectors that ground AI output in customers’ own data sources.
• Designed and built SSO, SCIM, and IdP provisioning flows for enterprise identity, with end-to-end test coverage.
• Architected frontend systems for users, teams, roles, and billing across the platform.
• Built centralized reporting and analytics tooling spanning frontend and server-side logic.
• Drive performance and refactoring work across the Writer app and its Chrome extension.

Motion design platform whose plugins bring Lottie animations into design, IDE, and CMS tools.

• Built and maintained production plugins across Figma, Adobe After Effects and Animate, Canva, VS Code, WordPress, and ChatGPT ecosystems.
• Implemented OAuth and token handling, secure storage, and host-specific permission flows for each platform’s constraints.
• Delivered import/export workflows and file-conversion pipelines for animation formats.
• Integrated the LottieFiles API and Lottie Player with focused memory, bundle, and caching optimization for large animation workloads.

Volvo Cars’ autonomous-driving software subsidiary.

• Built WebGL and D3 dashboards for scenario playback and validation of autonomous-driving behavior.
• Engineered UIs for high-frequency telemetry streams that stay responsive under heavy load.
• Aligned frontend tooling with backend and hardware testing pipelines alongside simulation engineers.

SASE network-security platform; admin consoles used by global operations teams.

• Built mission-critical admin screens for managing networks, people, companies, certificates, and security operations.
• Modernized legacy UI infrastructure to make security configuration panels more resilient.
• Worked independently in unfamiliar legacy code to deliver fixes and harden infrastructure-adjacent components.

Selected contract work across wallet, DEX, and analytics products: CTRL (formerly XDEFI), Unizen, OneArt, and HookRank (via IdeaSoft).

• Built a multichain wallet browser extension and NFT product flows across EVM chains (CTRL).
• Implemented multi-chain wallet connectivity and swap UX for a cross-chain DEX aggregator (Unizen).
• Built wallet-extension transaction flows and real-time balance features (OneArt).
• Built Uniswap v4 hook analytics with subgraph-backed filtering (HookRank, via IdeaSoft).

Mobile in-app advertising platform.

• Built scalable ad-creation tooling for mobile game teams.
• Shipped architecture improvements for analytics-aware campaign workflows.

One of the largest OTT streaming services in Eastern Europe: live TV, VOD, and sports broadcasting.

• Led the frontend engineering organization across web, Smart TV, mobile web, and console platforms.
• Owned player and application delivery for high-traffic live and VOD broadcasting.
• Raised release quality and operational reliability for major live broadcast events.
• Hired, mentored, and grew engineers while keeping delivery predictable.