
Örs-Krisztián Patakfalvi
Verified Expert in Engineering
Full-stack Developer
Krisztián has been working as a full-stack developer for over five years. He took part in various challenging projects in the telecommunications, safety, IoT, and mobile industries, handling engineering requirements, solutions architecture, DevOps, and back- and front-end development. Krisztián is an open-minded, well-organized person and a problem solver with great attention to detail who can successfully move big ideas from design to implementation.
Portfolio
Experience
Availability
Preferred Environment
Windows, IntelliJ IDEA, Linux, Git, Visual Studio Code (VS Code)
The most amazing...
...solution I've worked on is a microservice capable of processing and analyzing a tremendous amount of data from telecommunication sites all over the country.
Work Experience
Full-Stack Developer and DevOps Engineer
Codespring
- Took part in planning and designing various projects based on the requirements. Designed and built microservice systems capable of handling tens of thousands of events per second. Owned features, epics, and subprojects.
- Developed UI features like managing various domain-specific entities, handling authentication and notifications, and displaying blueprints of factories with objects moving in real time.
- Created tools for performing large-scale load tests and validations on a distributed microservice solution. Based on those results, optimized the processing, ingestion, and reading performance of the IoT events by several folds.
- Developed back-end features such as API endpoints, authentication, authorization, data manipulation and processing.
- Dealt with continuous integration and delivery (CI/CD) solutions and built up and maintained the deployment of several projects in Kubernetes.
- Mentored bachelor and master's students during internships by leading their projects.
Intern | R&D Engineer
Nokia
- Worked on a web-based tool for speeding up the configuration of the telecommunication servers.
- Developed a custom in-browser spreadsheet library capable of handling millions of rows and thousands of columns by virtualization.
- Built most of the user interface, keeping in mind the user experience and the site responsivity.
Experience
CSP | IPM Project
EmSite
https://youtu.be/rDSOhLRJtmgEmSafe and EmTrace
https://youtu.be/HkPxiCF62vwOnline Freelance Marketplace
Skills
Languages
JavaScript, Python, HTML, CSS, Java
Frameworks
Express.js, MUI (Material UI), Spring, Swagger, Spring Boot, gRPC
Libraries/APIs
API Development, React, Node.js, REST APIs
Tools
GitLab, GitLab CI/CD, Docker Compose, Git, NGINX, MQTT, SendGrid, Firebase Cloud Messaging (FCM), Kafka Streams, OpenVPN, Grafana, IntelliJ IDEA
Paradigms
Microservices, DevOps, Design Patterns, Mobile Development, Software Testing, Agile, Parallel Programming, Kanban
Platforms
Docker, Kubernetes, Apache Kafka, Windows, Visual Studio Code (VS Code), Linux, Rancher, DigitalOcean, Azure
Other
Web Development, Software Engineering, Data Modeling, Algorithms, Data Structures, TimescaleDB, Single-page Applications (SPA), Networking, Artificial Intelligence (AI), Data Analysis, Machine Learning, Data Mining, Robotics, Information Retrieval, Monte Carlo Simulations, Natural Language Processing (NLP), Performance Engineering, OAuth, Sprints, Stream Processing, Protocol Buffers, Cloud, Cloud Security, Cloud Storage, Cloud Services, GPT, Generative Pre-trained Transformers (GPT)
Storage
Databases, MongoDB, PostgreSQL, Redis
Education
Master's Degree in Data Analysis and Modelling
Babeș-Bolyai University | UBB - Cluj-Napoca, Romania
Bachelor's Degree in Computer Science
Babeș-Bolyai University | UBB - Cluj-Napoca, Romania
Certifications
Azure Fundamentals
Microsoft