About Me
I didn’t start my career in data - I began in customer support, continued in software development, where I learned how important it is to connect technical solutions with real people’s needs. Over time, I found myself drawn to data, because it tells the story behind every decision, every customer, and every outcome.
One of my recent projects was with an automotive client. I built a custom app that brought together parts and expense tracking, saving the team hours of manual work. I also took on financial reporting, streamlined the way we sourced auto parts, and launched marketing campaigns that helped cars sell faster. Seeing those changes make a measurable difference, like cutting costs and speeding up sales, showed me the impact data can have when it’s put into action.
Today, I use tools like SQL, Python, Tableau, and Excel to bring structure to messy datasets and uncover insights that drive real results. This portfolio is a collection of the projects I’ve enjoyed most - each one a step in my journey of combining technical skills, problem-solving, and storytelling with data.
I’m excited about opportunities where I can bridge technical data work with business strategy, helping organizations turn raw information into meaningful growth.
Anna Kostyrka
Experience
Data Analyst - Freelance
I work with an automotive client to optimize operations, sales strategies, and inventory management through data-driven insights. I collect and analyze market data to understand demand and support smarter business decisions. As part of this work, I developed a unified cost-calculating app using React, Python, and SQL, which streamlined calculations of the potential car expenses and improved operational efficiency by 30%. I also managed financial reporting, optimized parts procurement, and ran marketing campaigns that accelerated car sales by 25%.
Front-End Developer - SoftServe
At SoftServe, I worked on several projects for the leading companies in their industries. I played a key role in designing and developing user-friendly components that improved software functionality and user experience. Throughout the projects, I collaborated with the teams to address performance issues, enhance the softwares' reliability, and meet deadlines.
Front-End Developer - Upwork
I worked on a project for a client that involved transforming Photoshop designs into responsive and visually engaging HTML template. I developed modular templates that were adaptable, easy to update and reuse, giving the client flexibility for future customizations. The template became a hit, contributing to a 20% increase in revenue for the client through multiple sales. https://themeforest.net/item/cryptoki-html-template-for-nft-and-digital-marketplace/34741893
Customer Support Representative - Crumina
I worked for a company developing reusable WordPress templates for customers' websites. My main role was to improve customer support service, customer retention, and satisfaction. I analyzed Google Analytics traffic to track sales funnel, user behavior, and customer attribution, driving a 30% increase in new customers. Also, I analyzed customer support data to identify common issues, reducing resolution time by 30% through improved documentation and automated responses. Additonally, I maintained frontend UI components, ensuring data consistency and accessibility across multiple platforms, improving customer interactions by 20%.
Portfolio
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