Welcome! I'm Paweł Hulek, a passionate Senior Software Engineer with over 10 years of experience crafting scalable, high-performance applications that make a real difference.
When I'm not coding, you'll find me dancing Bachata, automating my smart home, or creating memories with my three amazing children. Fueled by endless coffee and a love for clean, elegant code.

My professional journey and expertise
Specialized in data analysis, statistical modeling, and software development. Focused on econometric methods and their application in business intelligence systems.
Comprehensive foundation in computer science, mathematics, and economics. Developed strong analytical skills and understanding of business processes.
Building a new data platform service from scratch. Developing tooling that enables teams to proactively discover and monitor data quality—identifying stale, broken, or inconsistent datasets to ensure data reliability across the organization.
Leading the modernization of a legacy ecommerce platform serving the European automotive spare parts market, transforming outdated monolithic architecture into scalable, cloud-native solutions. Driving backend development initiatives with a focus on microservices, containerization, and modern DevOps practices. Championing software engineering excellence by introducing comprehensive testing strategies, including end-to-end backend testing, and promoting functional programming principles and thread-safe immutable designs. Establishing backend tribes and mentoring teams to foster technical growth and knowledge sharing across the organization.
Leading development of mission-critical applications for highly automated warehouses serving the online grocery market. Architecting solutions using modern Java 17, functional programming with Vavr, and Hexagonal architecture patterns. Working with DynamoDB for high-performance data storage and implementing event-driven microservices.
Transitioned from contractor to full-time employee, continuing work on high-frequency trading systems. Focused on business feature development, performance optimization, and system modernization. Created proof-of-concepts for containerization and Apache Flink migration to improve system scalability.
Developed high-performance trade settlement systems for investment banking. Collaborated with 50+ international developers on subscription-based platforms with in-memory distributed caching. Implemented new business flows and market integrations with strong emphasis on comprehensive testing.
Built multiple applications for broker front-office systems, gaining experience across various architectures from monolithic to microservices. Implemented real-time data streaming with WebSockets and subscription-based communication patterns for financial trading platforms.
Explore my web applications and open-source contributions
A platform that helps people get out of jobs they're done with. Features career guidance, job search tools, and resources for professional transitions. Built with Next.js and deployed on Vercel.
Visit WebsiteA collection of useful online calculators and utility tools. Fast, responsive, and built with modern web technologies for everyday calculations.
Visit WebsiteMy personal digital hub: a sleek portfolio website showcasing my skills, projects, and contact information. Built with Next.js, TypeScript, and Tailwind CSS.
Visit WebsiteA friendly, informative website for a local kindergarten in Tenczynek. Features engaging visuals, parent-friendly navigation, mobile optimization, and a warm design.
Visit WebsiteA Home Assistant custom sensor that gathers gas usage data from PGNIG (Polish gas provider). Features automatic data fetching, energy tracking, and integration with Home Assistant dashboards. 51 GitHub stars.
View on GitHubA Home Assistant integration that aggregates all your bank balances from the Kontomierz financial app. Provides a unified view of your finances across multiple banks with real-time updates.
View on GitHubA Home Assistant custom sensor for tracking water consumption from Polish water utility providers. Enables monitoring and visualization of water usage patterns.
View on GitHubContributed to the popular waste_collection_schedule Home Assistant integration, adding support for the Polish EcoHarmonogram waste collection service.
View on GitHubI'm always excited to discuss new opportunities, innovative projects, or just have a great conversation about technology. Whether you're looking for a senior developer, need consulting on your next project, or want to chat about the latest in software engineering - I'd love to hear from you!