Principal Software Engineer & Architect. I build AI-first MVPs and the boring-but-critical plumbing that keeps them alive in production — queues, webhooks, API gateways, and observability that doesn't wake you at 2am. Working from Porto San Giorgio, Italy since 2022; most mornings start with espresso and a paper notebook. Let’s talk →

• SOLVE — AI-first systems and distributed tech: Design and ship AI-first MVPs, RAG/agent pipelines with schemas and guardrails, real-time/event-driven systems, and untangle legacy APIs/data models so teams can stop tiptoeing around them
• OWN — End-to-end delivery: Take scope → architecture → implementation → infra → observability, build API platforms and data contracts teams can ship against, ship weekly slices, favor simple/proven patterns, and use AI tools to compress delivery
• DE-RISK — Make it maintainable: Align early, communicate often, document decisions (ADRs/RFCs), bake in CI/CD, IaC, and telemetry, and leave clean handoffs teams can maintain after I leave

• Clarity & scope: A clear problem brief, prioritized backlog, risk list, and success metrics we’re aligned on
• Architecture & plan: A concise architecture doc and a realistic delivery plan the team can execute
• MVP in production: A functional MVP live in 4–8 weeks — production-ready, observable, and ready for early users
• Ops & handoff: CI/CD and preview environments in place, with ADRs and handoff docs so your team can move fast independently

"Konstantin is the steady technical hand every early-stage team hopes to find... avoids mountains of technical debt while keeping the team moving fast." — Azad A., Head of Product

"His specialty is infrastructure and architectural design... always up to date on bleeding-edge tech." — Kavin P., Founder & COO

• AI-driven property platform: Rebuilt evaluation + CRM flow; cut agent prep time in half and increased conversion by tightening data quality and alerts.
• Real-time co-sell dashboard: Aggregated B2B pipelines and live partner signals; teams closed deals ~30% faster with shared visibility.

• React Starter Kit — full-stack SaaS template used by hundreds of teams, cutting MVP build time by ~70%
• WS-Kit — type-safe WebSocket RPC framework that ships real-time features faster and safer than hand-rolled sockets
• SyncGuard — type-safe real-time sync for multi-client apps without writing conflict logic

• Prefer async communication (email/docs/tickets) over meetings; Linear beats Jira.
• Thrive in small, focused teams (1–5 engineers) and remote setups.
• Enjoy mentoring and code reviews; less excited about people management overhead.
• Obsess over code quality, testing, maintainability, plus clear UX.
• Early adopter who sticks to proven tools once they earn trust.

• Domains: Distributed and real-time systems; event-driven architecture; API platforms; RAG pipelines and AI agents; observability and reliability; infra automation
• Backend/infra: TypeScript; Bun/Node.js; PostgreSQL; Redis; Cloudflare; GCP; Terraform; Docker; Cloud Run; GitHub Actions
• Frontend: React; Next.js; Vite; TanStack; Tailwind; shadcn/ui
• AI: Vertex AI; Gemini; Claude/Claude Code; LangChain/LlamaIndex; eval pipelines

• Book a session: https://cal.com/koistya
• Connect on LinkedIn: https://linkedin.com/in/koistya
• Ask a question: open an issue or join Discord

Off the clock: VR table tennis, strong espresso, wandering Italy.