danielyan

TRUF (2024 — Present) — Business management platform integrating Tochka Bank API and 1C accounting. NestJS backend with PostgreSQL, a Go microservice for bank integration, and a Next.js frontend. 400+ commits. RYAB (2023 — Present) — E-commerce platform with Ozon marketplace integration. NestJS/GraphQL backend, MySQL database, React Native mobile app, and Strapi CMS dashboard. AHVE (2025 — Present) — AI-powered church management system using LangChain and LangGraph agents with a Telegram bot interface. NestJS backend with MongoDB.

Nebo Digital — a large-scale outdoor advertising management platform handling campaigns, media planning, reservations, payments, and reporting for Russia's leading outdoor advertising company. - Became the **#1 contributor among 57 developers** with 12,860 commits and 2.7M lines changed, establishing ownership of core backend modules - Architected and maintained a NestJS/GraphQL backend backed by both MongoDB and PostgreSQL, with Redis caching, RabbitMQ messaging, and Elasticsearch for search - Authored **1,943 test-related commits**, building out the project's automated test infrastructure using Jest and Supertest - Set up production observability with Prometheus, Grafana, and Sentry; managed deployments via Docker and PM2 - Integrated with AWS S3 for media asset storage and implemented campaign reporting pipelines processing high-volume advertising data

Software consulting company. Lead backend developer across 8 client projects, contributing 3,350+ commits and 3.5M lines changed. Mosaic (2018–2025) — Educational SaaS for shared-space teaching in K-12 schools - Served as lead backend developer for the company's largest engagement (1,818 commits, 2.1M lines), building the NestJS/GraphQL API with PostgreSQL and TypeORM - Implemented SAML-based SSO for school district authentication and integrated Google Sheets/Docs APIs for curriculum content management - Designed the real-time notification system using Firebase Cloud Messaging Workbook / WMS (2023–2026) — Warehouse Management System - Built the NestJS backend and React Native mobile app for barcode-driven warehouse operations, processing inventory workflows through BullMQ job queues - Delivered 505 commits covering picking, packing, shipping, and inventory reconciliation features Intermodal / Port24 (2022–2025) — Multimodal Logistics Platform - Developed NestJS backend with event-driven architecture using Google Cloud Pub/Sub, supporting a React Native mobile app and Next.js web portal - Integrated Keycloak for identity management and Firebase for push notifications across mobile clients Leafythings (2021–2024) — Cannabis Business Directory - Built ETL crawlers and data pipelines for business listing aggregation, with Redis caching on AWS infrastructure - Developed the NestJS/GraphQL API layer over MySQL with full-text search capabilities Psybil (2024) — Psychology & Data Analytics Platform - Designed a serverless NestJS backend on AWS Lambda with Elasticsearch for complex query patterns and automated PDF report generation Gilbarco (2025) — POS Loyalty Microservice for Gas Stations - Built a standalone NestJS microservice with MongoDB, BullMQ job processing, and Redis for session/cache management in a high-throughput retail environment Solana Trading Bot (2026) — DEX Copy-Trading System - Developed a NestJS backend integrating with the Solana blockchain for automated copy-trading across decentralized exchanges

- Delivered web applications for various clients C#, JavaScript, and Python, building full-stack solutions from requirements through deployment