Serhii Smovzh
From: Ukraine
Location: Stuttgart, DE
On Useme since 11 October 2026
About me
Senior Full Stack Engineer and former Frontend Team Lead with nearly six years of experience building B2B SaaS, real-time trading, and high-traffic applications. My stack includes TypeScript, Node.js/NestJS, React/Next.js, PostgreSQL, Redis, and REST/GraphQL/gRPC. I own delivery from architecture to production.
I led development of a crypto trading interface serving 17,000–20,000 users on its first production day. Earlier work also included optimizing data-intensive processes, cutting 50-page scraping from 10–12 minutes to 2 minutes and database seeding from 5 minutes to 18 seconds.
Recently, for a restaurant SaaS platform, I built offline-first inventory workflows, worked on AI voice ordering, and developed wholesaler analytics: revenue and order forecasting, customer-specific pricing simulations, and analysis of product demand correlations. I combine hands-on engineering, technical leadership, mentoring, and a focus on measurable outcomes.
CV / Résumé
Oct 2025 - Now
Senior Software Engineer
German B2B SaaS platform for restaurants
Owned AI voice ordering, offline-first inventory, wholesaler forecasting, and notifications for a B2B platform connecting ~1,200 vendors. Optimized MongoDB and RPC workloads on GCP/Kubernetes, accelerating order, cart, and product requests 1.5–4x.
Mar 2025 - May 2026
Frontend Team Lead
Sumex.io
Led four frontend engineers through a crypto trading platform relaunch. Reworked frontend architecture and built multi-account trading, TradingView analytics, and TP/SL workflows. Cut initial trading-page JavaScript ~5x; launch served 17–20K users.
Feb 2024 - Jul 2025
Software Engineer
ScaleFinal
Built media-buyer infrastructure automating domains, servers, DNS, Cloudflare, and campaigns. Developed Jira-triggered support/CI tools; migrated email services from Go to NestJS; optimized caching and bulk operations; helped teams adopt a monorepo.
Jul 2023 - Feb 2026
Software Engineer
TogetherNetworks
Built critical registration, resale, RTB, and event-tracking services for social-discovery products with millions of monthly users. Delivered event-driven flows and B2B integrations, investigated incidents, and optimized Kafka/Redis pipelines.
Jan 2021 - Jun 2023
Junior/Middle Software Engineer
CodeBridge Technology, Inc.
Delivered Node.js/NestJS/React features across retail, e-commerce, geospatial, and B2B projects, including Shopify API and OAuth integrations. Optimized JSON/CSV-to-PostgreSQL migrations and scheduled jobs, reducing database seed time by ~94%.