Andrii Kulyzhskyi

Software Engineer — AI, Cloud & Security

Warsaw, Poland

About

Engineer and cybersecurity-focused computer science graduate building AI, cloud, and education technology systems. Co-founded Mentor Lumen, where he designed a personalized learning platform, multi-service architecture, secure AWS infrastructure, and AI-assisted development workflows. Experienced across distributed systems, cloud infrastructure, payment infrastructure, observability, applied AI automation, open-source AI products, and quantum computing research.

Skills & Expertise

Leadership

Agile Planning Mentoring

Strategy

Resource Optimisation Cross-Team Collaboration

Engineering

Distributed systems Microservices API design Payment integrations Async queues Idempotency Reconciliation Fault tolerance Observability

Cloud & DevOps

AWS Azure GCP Linux Docker Kubernetes Terraform GitHub Actions GitLab CI AI-Augmented Development

Observability

Prometheus Grafana Distributed tracing Alerting On-call/incident response

Databases

PostgreSQL MySQL MongoDB Redis

AI & Research

LangGraph LangChain AWS AgentCore RAG Embeddings pgvector Prompt engineering Guardrails/human-in-the-loop Quantum machine learning Quantum circuit optimization Post-quantum cryptography

Security

Web exploitation Reverse engineering Cryptography Attack & Defense infrastructure CTF design

Programming

Java Python Node.js JavaScript/TypeScript Bash SQL

Work Experience

Mentor Lumen Full-time
Aug 2025 – Present

Co-Founder & Lead Engineer · Warsaw, Poland

  • Designed and built a personalized education platform (Java/Spring Boot on AWS) generating learning materials via RAG (embeddings + pgvector) over curated content.
  • Designed a multi-service architecture with bounded responsibilities and end-to-end tracing/observability.
  • Configured an AI-assisted dev harness compressing idea-to-PoC from weeks to days while preserving security, observability, and architecture standards.
  • Architected and provisioned secure AWS infrastructure from scratch, cutting running costs by 70%.
  • Built a real-time voice agent (Gemini Live API) streaming audio over WebSocket, benchmarked at ~1,000 simultaneous connections.
  • Implemented a lead generation agent on AWS AgentCore (LangGraph: tools, planner, memory) with input validation and human review, driving 100+ qualified candidates/day at 11% conversion.
Unicheck Remote
Jul 2025 – Aug 2025

Software Engineer · Ukraine, Remote

  • Unified 4 payment gateways and Nova Poshta logistics behind a single API; 30+ Ukrainian merchants live with zero custom storefront integrations.
  • Implemented Redis idempotency and async retry queues for reliable payment delivery through outages and rate-limit spikes.
  • Shipped sub-1-second checkout widgets across Shopify, Webflow, and WIX with zero theme conflicts, saving merchants a $15,000/yr certification fee.
  • Held 99.9% uptime with Grafana + Telegram alerting on payment failure rates, cutting MTTD for revenue-impacting incidents.
Freelance Remote
Oct 2024 – Jul 2025

DevOps Engineer & CTF Creator · Ukraine, Remote

  • Developed 40+ advanced CTF challenges spanning web exploitation, reverse engineering, and cryptography, with 93.4% positive feedback.
  • Engineered Attack & Defense scenarios with vulnerable microservices and automated scoring scripts.
  • Designed competition infrastructure supporting 200+ concurrent connections with zero downtime.
AI Quantum Tech Full-time
May 2024 – Present

Co-Founder & Lead Researcher · Warsaw, Poland

  • Co-founded and led a student research group turning AI/quantum research into optimization prototypes with professors across multiple universities.
  • Mentored junior researchers from quantum fundamentals to production-minded QML experiments.
  • Built a quantum European options pricing prototype demonstrating a quadratic speedup path over classical Monte Carlo.
  • Led an AI-assisted quantum circuit optimization pipeline, compressing manual backend tuning from weeks to minutes.
  • Contributed to a post-quantum authentication microservice (Kyber, Dilithium).
  • Delivered technical workshops on secure engineering, research tooling, and software delivery practices.

Projects

AI Neuro-Marketing Validator

Full-stack app analyzing marketing videos via TRIBE v2 neural response prediction and Claude-generated recommendations. React + TypeScript frontend, FastAPI backend, Modal.com deployment.

React TypeScript FastAPI AI

Meal Bot

AI-powered Telegram bot turning quick video notes into structured meal logs using Gemini video understanding, with Notion logging and Docker deployment.

Telegram Gemini Docker Automation

Education

Master's Degree, Data Science March 2026 – 2027

Polish-Japanese Academy of Information Technology, Warsaw, Poland

Bachelor's Degree, Computer Science — Cybersecurity Specialization Oct 2022 – Feb 2026

Polish-Japanese Academy of Information Technology, Warsaw, Poland

  • Final grade 5.
  • Rector's Scholarship for all 3.5 years of undergraduate study.
  • Created the subject "Introduction to Quantum Computing," launching Winter 2026/2027.

Languages

English C1 Polish B2 Ukrainian Native Russian Native

Interests

Mountain climbing (Tatra Mountains peaks, progressing to technical routes) Running (10K under 50 minutes) Tennis (regular player)