Vadym Mariiechko

Data Engineer

Warsaw, Mazowieckie, Poland4 yrs 7 mos experience

Highly StableAI ML Practitioner

Key Highlights

Expert in Data Engineering and AI solutions.
Proven track record in developing impactful software applications.
Strong collaboration and continuous learning mindset.

Stackforce AI infers this person is a Data Engineer specializing in AI and data solutions for the transportation and retail industries.

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Skills

Core Skills

Data EngineeringLlm & Ai-powered SolutionsPython & Backend Development

Other Skills

DatabricksFastAPIMongoDBOpenAI APIAWS BedrockDockerPredictive analyticsAutomated notificationsLangChainAWS CloudETLPostgreSQLDjangoReactBigQuery

About

🎯 I create software and technology solutions that make people’s lives more efficient and comfortable. With over 3 years of professional experience and 6 years in programming, I've built a diverse range of applications — from full-stack web and cross-platform desktop apps to data platforms, data engineering solutions, and LLM-powered chatbots. My journey has led me to Data Engineering, where I design systems that structure and deliver data where it’s needed most. What drives me? 🔹 Purpose-driven design – building solutions that solve real problems and drive impact. 🔹 Collaboration – working closely with teams and stakeholders to align technology with real-world needs. 🔹 Continuous learning – exploring new technologies, understanding systems deeply, and embracing challenges. Outside of work, I enjoy sports (yoga, calisthenics, tennis, skating — you name it!) and love to cook — especially cheesecakes, and while I won’t claim they’re the best, they tend to disappear quickly 🍰 Core Skills: 🏗 Data Engineering & Architecture (ETL, data modeling, processing) 📊 Big Data & Cloud Technologies (Databricks, Spark, AWS/GCP) 🗄️ SQL & Database Design (PostgreSQL, BigQuery, MongoDB) 🚀 Python & Backend Development (FastAPI, Django, Flask) 🤖 LLM & AI-powered Solutions (LangChain, OpenAI API, RAG-based AI)

Experience

4 yrs 7 mos

Total Experience

4 yrs 7 mos

Average Tenure

4 yrs 7 mos

Current Experience

Addepto

3 roles

Data Engineer

Promoted

Feb 2024 – Present · 2 yrs 3 mos · Warsaw, Mazowieckie, Poland

Developing a multi-modal data collaboration platform to facilitate real-time data exchange between airports, airlines, and other transportation providers. Enables consolidated schedules, predictive analytics, and automated operator notifications for optimized resource allocation and disruption management. Utilizing Databricks as the core data intelligence platform.
Designed and built an LLM-powered AI assistant to support aviation operators in creating and validating aircraft sourcing requests against predefined business rules. Integrated RAG-based free-form conversation capabilities using a knowledge database for real-time decision support. Implemented with FastAPI, MongoDB, Langchain, OpenAI API, AWS Bedrock, Beanie, and Docker.
Developed an LLM-powered content generation service to automate and personalize aircraft proposals and client communications for an aviation sales team. Ensured adherence to company guidelines while improving efficiency. Built with FastAPI, OpenAI API, AWS Cloud, and Docker.

DatabricksFastAPIMongoDBOpenAI APIAWS BedrockDocker+2

Junior Python Developer

Jan 2022 – Jan 2024 · 2 yrs · Warsaw, Mazowieckie, Poland

Engineered a Single Customer View database, developing ETL processes for data aggregation into a CRM system. Developed an analytical platform where clients could access interactive dashboards and launch targeted marketing campaigns. Developed with Dagster, PostgreSQL, Django, and React, deployed in AWS Cloud.
Enhanced an analytical platform for a futurism portal, implementing a customer consumption profiling system and a tag-based recommendation engine. Built a robust API layer with BigQuery, Flask, and Looker, leveraging GCP services for scalability.
Led the development of a cross-platform GUI application for automated image processing, incorporating Object Segmentation, Video Stitching, Inpainting, and Color Correction using PyQt5, PyTorch, and OpenCV.
Designed and built a customer data platform for retail owners, providing insights to enhance revenue, marketing strategies, and business performance. Developed with Django, DRF, and Angular, containerized with Docker, and hosted on AWS Cloud.

ETLPostgreSQLDjangoReactBigQueryFlask+3

Python Intern

Aug 2021 – Dec 2021 · 4 mos · Warsaw, Mazowieckie, Poland

Developed an AI-powered virtual assistant for business communication, integrating with collaboration tools to facilitate efficient data retrieval and updates. Built using Rasa, Sanic, Spacy, and Docker.
Assisted in developing a logistics optimization platform, improving supply chain efficiency with data-driven automation. Worked with MS SQL and Pandas for data processing and reporting.

RasaSanicSpacyDockerMS SQLPandas+1