Oleksandr

📍 Krakow, Poland (Open to
Oleksandr Boiko Remote) | ✈️ Relocation: Open

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Software Engineer | Backend & Database Architecture | AI Integration 💬 Telegram: @Rainsicks

EXPERIENCE TECH SKILLS
​Backend & Databases: SQL,
Lead Backend Engineer & AI Integrator – SCS / LogistOffice • PL/SQL, Oracle RDBMS,
Kyiv (Remote) RESTful Web Services, JSON,
December 2022 – Present JavaScript, Python, Node.js
Engineered and deployed AI-driven agents within the Oracle ecosystem (Basic/Learning).
(APEX AI) to automate logistics support, data processing, and user request
​
handling.
​AI & Automation: AI Agent
Development
Designed and integrated complex conversational chatbots using n8n and (DBMS_CLOUD_AI, Oracle APEX
Smart Sender, connecting them via REST APIs to enterprise databases for AI), Google Antigravity, Cursor,
real-time data retrieval. Prompt Engineering, LLM
Integration (Gemini, ChatGPT),
n8n workflow automation,
Developed robust prompt engineering frameworks and fine-tuned LLMs to Smart Sender (Chatbots).
improve automated content generation and customer service interactions.
​

​Tools: Git/Git Bash, Postman,
Led the discussion, architecture design, and writing of technical Jira, Trello, ARC.
specifications for new enterprise projects.
​

​Soft Skills: Agile
Developed specific backend functionality for unique client business Methodologies, System
processes, optimizing database elements for faster system operation. Architecture Design, Team
Mentorship, Technical
Documentation, Autonomous
Trained new employees and coordinated tasks across the development Problem-Solving.
team.

LANGUAGES
Deep PL/SQL Expertise: Architected and managed the entire spectrum of
Oracle database objects, including complex PL/SQL packages, dynamic SQL,
Ukrainian: Native
compound triggers, materialized views, and collections.

Russian: Native

High-Performance Processing: Implemented bulk data processing (BULK
COLLECT / FORALL) and advanced indexing strategies to handle millions of English: Intermediate (B1) /
rows with minimal latency. Strong Technical Reading &
Writing
Advanced Analytics: Designed complex analytical queries using Oracle
Window Functions and CTEs (Common Table Expressions) for heavy
reporting and data extraction.

Database-Level Integrations: Built seamless API integrations directly from
the database level using APEX_WEB_SERVICE, ORDS (Oracle REST Data
Services), and custom JSON parsing inside PL/SQL.

Oracle Developer – SCS / Logisticon • Kyiv
September 2020 – December 2022

Architected and managed large-scale database structures (tables, jobs,
packages, procedures, and functions).

Created RESTful web services for seamless integration with external client
systems and third-party APIs.

Processed complex client requests, troubleshooting and fixing deep-level
system bugs.

Optimized complex SQL queries, significantly reducing server load and
improving response times for high-load applications.

Wrote detailed technical documentation for both developers and end-users.

Oracle Developer – LogistOffice • Kyiv
June 2020 – September 2023

Maintained and developed core backend features for a high-traffic logistics
tender platform based on Oracle APEX.

Conducted end-to-end testing of new functionality based on customer
requirements.

Provided critical support for database migrations and data integrity
maintenance.

Junior Development Specialist – Sistematika Ukraina • Kyiv
August 2019 – May 2020

Assisted in the backend development of a major B2B portal.

Built web application modules using Oracle APEX.
Designed the initial API structure for B2B portal integrations.

EDUCATION

National Aviation University, Kyiv
Sep 2016 – Jun 2018

Unfinished Higher Education "Cybersecurity"

College of Computer Technologies and Economics, Kyiv
Sep 2012 – Jun 2016

Junior Specialist "Maintenance of computer systems and networks"

KEY PROJECTS & ARCHITECTURE

Enterprise AI Agent: – Developed an intelligent agent
integrating LLMs with database architecture for automated data
processing.
L1/L2 Tech Support Chatbot: Engineered automated customer support flows
using n8n and Smart Sender with REST API database integrations.

Logistics & Supply Chain (SaaS): –High-load bidding and
freight management system.
YMS (Yard Management System): Automated vehicle traffic and dock
scheduling for warehouse facilities.

WMS & 3PL Systems: Lightweight Warehouse Management System and
Third-Party Logistics billing/fulfillment architecture.

Keg Tracking System: Full-cycle return logistics and accounting system for
beverage containers.

Enterprise & B2B Solutions:: – Core business logic and data
consolidation for enterprise resource planning.
B2B Client Portal: Secure web platform for business partners, order
management, and API integrations.

Executive Analytics Dashboards: Real-time data visualization, KPI
monitoring, and complex SQL reporting (using CTEs and Window
Functions).