Roman
Shulgin.
I build full-stack systems end to end — turning legacy code into 10× faster, cloud-native architecture, and shipping AI-driven products. Most recently worked at Riskified, Tel Aviv.
Full-stack range, product instinct, and an AI edge.
12+ years across the stack — high-load systems, cloud infrastructure, and AI integrations. I have a proven track record of optimizing legacy codebases for 10× performance and leading end-to-end product development.
I'm at my best bridging complex business requirements with scalable architecture — modern stacks, microservices, and custom AI agents that drive real operational efficiency.
BANK CLIENTS
FULL-STACK
Things I've built.
A mix of personal projects and enterprise systems. Much of my recent work is under NDA — outlined here without confidential detail.
iHousing
Full-stack SaaS rental-housing platform. Architected end to end — Next.js frontend, 10 NestJS microservices, GraphQL, and automated Docker delivery.
GiveMeClassic
A side project for discovering and comparing classical-music recordings — built to scratch a personal itch and explore clean web architecture.
Observe the Sun
A companion for tracking real-time solar activity and observation conditions — a playground for live data and responsive UI.
E-commerce fraud-prevention platform. Full-stack work across a NestJS, React & Angular stack — cut a legacy linking-table data layer from 10–20s to 0.7–1.8s, built custom AI agents (Mastra + Anthropic) with Golden Dataset evals and Langfuse-based troubleshooting, and architected a JWT→HMAC traffic proxy and request-audit library for strict security compliance.
Banking credit-risk platform. Engineered a front-end risk-monitoring system on a NestJS microservices backend processing high-throughput data via Kafka & RabbitMQ, and built an internal React UI library that unified design standards across teams.
Where I've worked.
Software Developer / AI Platform Engineer
RiskifiedWorked in a full-stack capacity across a NestJS, React and Angular stack. Optimized a legacy linking-table data layer in a SaaS-based enterprise AI agent, cutting processing time from 10–20s to 0.7–1.8s via Elasticsearch, caching and query reduction; used Claude Code to analyze and restructure the legacy logic. Built and deployed custom AI agents (Mastra + Anthropic), owning prompt engineering, Golden Dataset preparation and evaluation frameworks, and used Langfuse to investigate and resolve AI chat-session issues. Architected a JWT→HMAC traffic proxy and request-audit library, and ran microservices on AWS, Auth0, Kubernetes, Terraform, Groundcover and ArgoCD (including SSO, EKS and subnet configuration) with 24/7 on-call ownership.
Lead Developer
iHousing (Startup)Architected and developed a full-stack SaaS rental-housing platform — Next.js (TypeScript) SSR frontend with 10 NestJS microservices (MongoDB, GraphQL, RabbitMQ). Established GitLab CI/CD for automated Docker deployments and integrated third-party systems including CRMs and Telegram Bot APIs.
Lead, Senior Frontend Developer
LuxoftRelocated to Serbia for this engagement. Migrated a portfolio of critical business applications off a legacy proprietary hosting platform onto open-source, cloud-ready architecture, and built an internal UI library that unified application design with highly efficient universal components.
Led a full-stack team building React + TypeScript front-ends with Redux-Saga and micro-frontends (module federation) on a NestJS / PostgreSQL backend with RabbitMQ, Kafka and Apigee. Ran SCRUM ceremonies, risk assessment, people management and code review, with Jenkins CI/CD.
Tech-led OLIMP — a bank platform for credit-risk management and monitoring. Built a React + TypeScript front-end (Redux-Saga local store, Apollo Client server store) over a GraphQL API, partnering with Java developers on service architecture.
Senior Full-Stack Developer
ProscomFull-stack delivery across MedTech, EdTech and gov-tech products — React / Angular front-ends with NodeJS (Express, NestJS) and PostgreSQL back-ends, plus GraphQL, SOAP/XSLT integrations and React Native / Cordova hybrid apps. Clients included Moscow’s EMIAS unified medical system and the Russian Ministry of Education.
Full-Stack Developer & Project Manager
LemierBuilt a museum experience that surfaces content from Bluetooth-LE positioning and a barcode product-management app with content and access-rights admin — Android (Java) and iOS (Swift) clients, AngularJS front-ends and a NodeJS/Express + Socket.io backend. As PM: wrote specs, hired and coordinated developers, ran code reviews and set up TeamCity CI/CD.
Full-Stack Developer & Tech Lead
EmmtechTech-led real-time products on AngularJS + NodeJS/Express + Socket.io — a distance-learning platform with chat, scheduling and recorded video broadcasting, and an online-auction system with live video and chat (Redis for sessions, PostgreSQL for data), plus a social network with an online store.
Full-Stack Developer
VkostumeBuilt a made-to-order carnival-costume e-commerce store with delivery — order administration, live inventory tracking and dispatch to delivery services. PHP (CodeIgniter) backend, MySQL with Memcached caching, a jQuery / Bootstrap front-end, and REST/SOAP integrations with delivery, analytics and ad platforms.
The toolkit.
Frontend
Backend
DevOps & Cloud
AI & Architecture
Where I push code.
Open contributions on GitHub and GitLab — plus the languages I reach for most across personal and client work.
Where a lot of my professional work lives — GitLab CI/CD pipelines, Docker delivery and private client repositories from startup and enterprise engagements.
Languages by usage
Let's build
something.
Open to senior full-stack roles — on-site / hybrid in Israel, or remotely from Israel with strong global product teams.