Roman Ветеран

Roman Koshovyi
Software Engineer (Python / AI)

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Summary
Results-driven Software Engineer (Python / AI) with over 8 years of experience (including extensive full-stack
freelance and corporate engineering) designing, scaling, and deploying enterprise web applications and intelligent
systems. Proven track record in orchestrating autonomous AI planning agents using LangChain, training text
embeddings via PostgreSQL (pgvector), and building high-performance architectures with FastAPI and Django. Adept
at implementing cross-platform solutions across Linux and Windows environments, managing multi-tenant
infrastructure with robust CI/CD pipelines, and delivering responsive front-ends using Vue.js and React. A proactive
technical leader with strong self-management skills, specializing in bridging the gap between core back-end systems
and cutting-edge Agentic AI workflows.

Technical Skills
Programming Languages: Python, JavaScript, TypeScript, HTML, CSS, PHP, RegEx.
AI & Intelligent Systems: AI Agent Orchestration, LangChain, Anthropic Claude (Sonnet), OpenAI API (GPT-4o/4o-
mini), Text Embeddings, Semantic Search.
Backend Frameworks & Tools: FastAPI, Pydantic, Django, Django REST Framework (DRF), SQLAlchemy, Celery,
Pytest, uv, pipenv.
Frontend Libraries & Frameworks: Vue.js, React, Node.js, Bootstrap, jQuery.
Databases, NoSQL & Storage: PostgreSQL (pgvector), MySQL, MSSQL, Redis (In-memory/NoSQL), SQLite.
DevOps, Infrastructure & OS: Linux, Windows, Docker, Kubernetes (K8s), CI/CD Pipelines, GitHub Actions, GitLab
CI, CircleCI, Conda, Git.
Tools & Productivity: Postman, Logfire, DBeaver, WinSCP, Windsurf, PyCharm, VS Code, Jira, Slack, Agile/Scrum.

Relevant Experience
2024 – 2026
Software Engineer @ Itera Research
 Engineered and scaled enterprise web applications, drove core R&D initiatives, and implemented cloud
solutions using Python, FastAPI, Django, and DRF on the back-end, combined with modern Agentic AI
frameworks and Vue.js on the front-end.
 AI-Powered Day & Weekend Itinerary Application: Engineered a robust REST API backend using FastAPI
and LangChain to orchestrate autonomous AI planning agents, integrating OpenAI GPT-4o-mini and
PostgreSQL (pgvector) text embeddings for advanced semantic search and personalized itinerary generation;
implemented real-time data streaming via Server-Sent Events (SSE) and seamlessly connected critical third-
party ecosystems including Google Cloud Platform (Google Places API), Uploadcare, RevenueCat, and
SendGrid.
 Real Estate Developer Platform: Engineered a secure RESTful API backend using FastAPI paired with an
optimized PostgreSQL database for a property developer specializing in luxury villa sales; successfully
integrated the platform with Salesforce CRM to automate lead management, track customer journeys, and
ensure real-time sales synchronization for the US market.
 Travel Aggregator Dashboard & Booking Engine: Delivered full-stack development for an automated package
tour booking system and loyalty dashboard, building the backend with Django/DRF and the frontend with
Vue.js; integrated Stripe for secure global payment processing and engineered synchronization pipelines for
real-time flight and bus transit reservations.
2021 – 2023
Software Engineer @ Universium
  Maintained core e-commerce products and drove R&D initiatives to optimize database architecture, system
scalability, and backend performance using Python and Django.
 Engineered high-throughput integration pipelines with global marketplaces (Amazon, eBay, AliExpress) and
marketing platforms (Google, Facebook API) using Python/Django, while delivering responsive frontend
interfaces built with Vue.js, React, and Bootstrap to enable seamless multi-channel product synchronization
and order management.
2013 – 2021
Full-stack developer (freelancer) @ Upwork
 Maintained a 92% Job Success Score on Upwork, delivering tailored full-stack solutions (Python/Django, PHP,
JS) and solving critical architectural issues for diverse international clients.
 E-Democracy Platform (Lviv City Council): Architected and developed an e-petition service for the Lviv City
Council using PHP, JS, and Bootstrap; the platform won the Odessa Hackathon in 2013 and served as the
historical prototype for modern e-democracy systems in Ukraine.
 Crowdfunding Platform "Lvivska Kasa": Developed a custom crowdfunding web application to streamline and
secure online donations for the First Lviv Foundation.

Education
School of AI (online)
Certified Master in Agentic AI: A 52-Week Applied Program:
 Building Agentic AI: Fundamentals, Reasoning Strategies, and Core Frameworks (LangChain, LangGraph,
CrewAI, AutoGPT, BabyAGI, LlamaIndex),
 Multi-Agent Systems: Task Delegation, Communication Protocols, and Complex Workflows,
 Knowledge & Integration: Advanced RAG with Vector DBs (FAISS, Pinecone, Chroma), Enterprise APIs,
Cloud Platforms, and IoT,
 Governance & Performance: AI Safety, Human-in-the-Loop, Guardrails, and Latency/Cost Optimization
University of Michigan (online)
Specialization “Python for Everybody”:
 Python Data Structures,
 Using Python to Access Web Data,
 Using Databases with Python,
 Retrieving, Processing, and Visualizing Data with Python
University of Wroclaw (Poland)
Faculty of Law, Management and Economics. Graduated master's "Mechanisms of preparation and application of the
statutes of communes and Strategic plans for the development of communes: the Polish experience for Ukraine."
L'viv Polithecnik Institute (Ukraine)
Electronic engineering. Engineer's degree.

Languages
 Ukrainian – native
 Russian – fluent
 Polish – fluent
 English – intermediate+

Interests
Active Tourism: climbing, mountain hiking.
Music: rock, metal, and folk music.
Intellectual Pursuits: philosophy, world history.