Nikita

Nikita Linchak
ABOUT ME CONTACT

AI Automation Engineer with a Systems Administrator foundation. Started in 📧 [open contact info](look above in the "contact info" section)
infrastructure (Linux, virtualization, networking, VPN) and moved into AI 📱 Telegram: @nikos3rd
automation when it became clear the most reliable system is the one nobody 💼 LinkedIn: [open contact info](look above in the "contact info" section)
has to run by hand. Today I work across both layers: building production AI 📍 Ukraine | Open to Remote Worldwide
agents - 96+ n8n workflows shipped, custom MCP servers, async RAG stacks
across multiple vector backends - and running the Linux/Docker LANGUAGES
infrastructure they live on. Useful for roles that need someone who can
design an autonomous agent on Monday and debug why production crashed Ukrainian: Native
on Tuesday.
Russian: Native
WORK EXPERIENCE English: B2 (Upper-Intermediate)
German - Beginner
AI Automation Engineer - Maya B LLC | Remote | Jan 2026-May2026
EDUCATION
Built a 76-node Mercado Libre listing automation pipeline across 5 LatAm
marketplaces using n8n, Gemini 2.5 Flash on Vertex AI, BigQuery, Slack alerting, Kyiv National University of Technologies and Design
(KNUTD) | Aug 2022 - 2026
and daily scheduled runs; reduced recurring manual listing preparation for the
operations team. Bachelor in Computer Science | Aug 2022 - 2026
Consolidated 3 fragmented legacy title-rewrite workflows into a single
Certification: Creation and Development of
production pipeline; implemented BigQuery MERGE-based idempotent re-runs
IT Products | Genesis Tech Academy
and a cache layer to prevent redundant Gemini calls for duplicate SKUs.
Award: "WEB-TECHNOLOGIES" Student
Designed an Amazon Marketplace BuyBox Monitor covering 14 markets; identified
Competition Diploma | KNUTD
bottlenecks in batch sizing, token caching, adaptive waits, and batched Google
Thesis: Hybrid information-retrieval system
Sheets writes, then documented a 5-10x speedup roadmap.
combining BM25, Sentence-BERT, HNSW,
Integrated Mercado Libre API, Amazon SP-API, Slack, Google Sheets, OAuth 2.0,
RRF, and a Cross-encoder, with a
BigQuery, and LLM APIs into production automation workflows.
Next.js/React web app implementation.

AI Automation Engineer & System Administrator | Kyiv, Ukraine | Jan 2024 - Present

Architected an async team-scale RAG system for an internal Full-Stack Development & Security: Led the full lifecycle of the
department of ~10 users — background-worker indexing, non- corporate website, aimed at enhancing online presence. Guided the
blocking re-embedding on document changes, retrieval orchestrated project from initial design in Figma and custom-coded prototypes
via LangChain across a multi-vector-store design (Qdrant, Pinecone, to a full-scale implementation on WordPress, utilizing Postman and
pgvector, Supabase) for backend comparison and fallback Burp Suite for API and security testing.
Deployed three production AI agents on a shared n8n + LLM Hybrid Infrastructure & Linux Administration: Managed a
orchestration layer: semantic email classification and routing, heterogeneous server environment (Windows Server clusters, Linux
automated resume screening with candidate matching, and multi- Debian/Ubuntu). Maintained virtualized infrastructure via VMware
source competitive-intelligence research — hundreds of items per ESXi/Proxmox, configured web servers (Nginx, Apache) and ensured
week across HR, sales, and management business continuity through Veeam Backup & Replication.
Shipped an 80-node multi-agent Telegram assistant (Orchestrator + Network Security & VPN Configuration: Engineered a secure
4 Sub-Agents: Research, Email, Document, Memory) with Pinecone- network stack, implementing traffic segmentation via VLANs on
backed long-term context and centralized Telegram error alerting Cisco/MikroTik equipment. Deployed secure remote access
•Implemented custom Model Context Protocol (MCP) servers for solutions using L2TP/IPsec with MS-CHAPv2 authentication,
GitHub and Docker inside n8n workflows, enabling secure bi- ensuring encrypted connectivity for distributed teams.
directional communication between Claude Desktop and production Physical Network & IT Ecosystem: Designed and deployed the
infrastructure — hand-built rather than off-the-shelf, a capability physical network topology, including structured cabling
held by a small minority of automation engineers in the market. management, patch panel termination, and hardware installation.
Built a FastAPI + PostgreSQL Lead CRM backend with Claude Haiku Oversaw centralized storage (Synology NAS) and VoIP systems
as scoring engine — RESTful API, async task processing, per-record (Grandstream).
scoring rationale stored for sales team review Web Security & Full-Stack Implementation: Led the development
•Orchestrated end-to-end multi-channel content automation via lifecycle of corporate web assets from prototyping to production on
n8n integrating 6+ GenAI APIs (OpenAI, Claude, Gemini, Grok, Kling, WordPress. Conducted rigorous API testing using Postman and
Sora) across the full content lifecycle — prompt engineering → performed security vulnerability assessments using Burp Suite.
generation → → QA scheduled publishing to LinkedIn, Instagram, and Technical Operations & Support: Provided Tier-2/3 technical
TikTok. Absorbed the generate-review-schedule loop into an support for 250+ users. Diagnosed workstation hardware issues and
automated pipeline. supported engineering software (SolidWorks) and ERP systems (1C).
 TECHNICAL STACK
AI & Automation
n8n (production, 96+ workflows), Make.com, LangChain, MCP (Model Context Protocol), RAG, Vector DBs (Qdrant, Pinecone,
pgvector, Supabase), Claude (Code, API, Skills), OpenAI API, Gemini (Vertex AI), Cursor, Prompt Engineering, Multi-Agent
Orchestration, Ollama, OpenRouter, HuggingFace
Programming
Python (FastAPI), TypeScript / JavaScript (Node.js, React, Next.js 14, Tailwind, Framer Motion), SQL, Bash, HTML, CSS
Infrastructure & DevOps
Linux (Debian, Ubuntu), Windows Server, Docker, Kubernetes, ArgoCD, VMware ESXi, Proxmox, Nginx, Apache, Veeam Backup
& Replication, Git, GitHub Actions, Google Cloud (Vertex AI, BigQuery), Synology NAS, Terraform
Networking & Security
VLAN segmentation, L2TP/IPsec VPN (MS-CHAPv2), Cisco, MikroTik, Burp Suite, Postman, Playwright
No-Code & Web
WordPress, Webflow, Framer, WeWeb + Xano, Figma
Integrations & APIs
Stripe API & webhooks, HubSpot, Airtable, Apollo.io, LemList, Twilio, Tavily, Slack, Google Sheets / Workspace, OAuth 2.0,
Firecrawl, Apify, Mercado Libre API, Amazon SP-API, Clay, HeyReach, Mailchimp
Enterprise Support
SolidWorks (CAD), 1C (ERP), Grandstream VoIP