About Me
I’m Oleksandr. Right now I’m building Signus.ai, an AI-native contract intelligence platform powered by Sigi, an AI legal agent for generating, signing, analyzing, and tracking agreements at scale.
Before Signus, I spent 15+ years as a backend architect and full-stack engineer — designing cloud infrastructure and microservices on AWS across SaaS, e-commerce, finance, and telecom, most recently leading backend architecture at UserWay (~10k req/s across 15+ services).
I’m based in Geneva, NY, where I hike, rollerblade, and watch too much Kill Tony.
What I Do
- AI Product Engineering: Building AI-native products — LLM agents and contract intelligence.
- Backend Architecture: Scalable, resilient services in Java, Node.js, Spring, and Nest.js.
- Cloud Infrastructure: AWS at scale — ECS, Lambda, RDS, Redis — and microservices under heavy traffic.
- DevOps & CI/CD: Deployment automation and pipelines that ship safely and often.
- Technical Leadership: Leading cross-functional teams from idea to production.
SpecCraft open source
I maintain and contribute to SpecCraft — a semantic concept-mapping tool for learning and research. You build a graph of concepts and relations; AI agents (over MCP, or in-app chat) do the routine work — discovery, expanding ideas, finding associations, explaining — so you can focus on actually understanding a domain.
The idea: not a design canvas, not a notes app, but a thinking tool where the agent is a first-class collaborator on a shared semantic graph. Built with NestJS, Next.js, Postgres, and a remote MCP server.
Temporal & Durable Execution
I’m a firm believer in Temporal. After ~1 year building on it, I’m convinced workflows-as-code is the right default for anything that has to survive crashes, retries, and long waits — it turns brittle distributed flows into something you can actually reason about.
Building Temporal-related tooling is my current priority — alongside going deep on Go, the language at the heart of Temporal’s ecosystem.