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Location

Poland

Rate

$45  / per hour

Years of experience

10+

About

I am a highly motivated and experienced Senior Java Developer and Machine Learning Expert with a strong background in developing enterprise-grade software and advanced machine learning algorithms. With expertise in Java, Python, and Big Data technologies, I have successfully contributed to projects in diverse fields, including online fraud prevention, financial data analysis, and real-time behavioral analysis. My technical skills include working with tools like Apache Spark, Kubernetes, AWS, and Docker, allowing me to design and implement complex data lakes and Big Data pipelines. Additionally, I have a proven track record of leading teams, enforcing clean code practices, and managing projects using Agile methodologies. My academic background as an Assistant Professor further enhances my ability to approach problems analytically and deliver innovative solutions. Fluent in English and possessing strong communication and leadership skills, I am well-equipped to drive impactful results in any tech-driven environment.

Tech Stack

Java, Ansible, Apache Spark, AWS, Big Data, Hadoop, Jenkins, Kafka, Machine Learning, Power BI, Python

Experience

  • Developed and deployed machine learning algorithms for online fraud prevention and real-time behavioral analysis.
  • Led the design and implementation of enterprise-grade software in cloud environments.
  • Worked extensively with Big Data technologies, including Apache Spark, Hadoop, and Kafka, to process and analyze large datasets.
  • Managed and supervised cross-functional teams, implementing Agile methodologies to enhance project efficiency.
  • Designed and developed data lakes and Big Data pipelines to support advanced data processing needs.
  • Integrated machine learning models with existing stream processing systems to improve real-time data analysis.
  • Conducted advanced analysis of financial data, images, and text, using tools like TensorFlow and OpenCV.

Employment history

Senior Researcher, Buguroo Offensive Security S.L. November 2020 - Present

• Developing machine learning algorithms in online fraud prevention.
• Developing enterprise grade software.
• Working in cloud environment.
• Designing Data Lakes and Big Data pipelines.
• Working with Big Data, in particular financial, using Apache Spark and
Apache Hadoop.

Senior Data Science Expert, ING Bank Śląski February 2019 - October 2020

• Performing advanced analysis with multiple types of data (text, images,
etc.).
• Working on a daily basis with Apache Hive and Apache Hue.
• Designing and developing of Python based full-stack software.
• Visualization, both using custom-made software and using tools such as
Microsoft PowerBI.
• Decomposing needs expressed by business owners to requirements and
software design.
• Enforcing clean code rules along colleagues.

Senior Java Developer / Lead Machine Learning Expert, Centrum Bezpieczeństwa Cyfrowego S.A. July 2018 - February 2019

• Developing streaming applications using Apache Flink.
• Deploying streaming jobs via Mesos / DCOS / Kubernetes
• Developing real time system for behavioural analysis.
• Integrating Machine Learning algorithms with existing stream processing
system.
• Optimizing system performance by fine-tuning algorithms and stream processing workflows for real-time applications.

Project Manager / Scrum Master, Sharkbyte Systems July 2017 - July 2018

• Supervision over a group of programmers and testers (8 people in total).
• Implementation of Agile methodologies; team coaching
• Constant contact with Project Owner
• Managing project risks and issues, proactively finding solutions to keep projects on track.

Machine Learning Expert / Senior Java Developer, April 2016 - July 2017

• Design, implementation and deployment of applications for image analysis
for the recognition of license plates.
• Parameter tuning for poor lighting conditions, noise in data and uncertain
knowledge.
• Creation and implementation of algorithms to improve the quality of solutions
thanks to grouping algorithms and the data mining.
• Creating a website for streaming text analysis from LPR cameras (License
Plate Recognition), integration with existing systems.
• Real time data analysis, developing streaming algorithms.

Assistant professor, Institute of Computer Science October 2014 - September 2018

• Conducting advanced research in machine learning, focusing on grouping algorithms.
• Designing and teaching courses in Java programming and system design.
• Supervising graduate and doctoral students in their research projects, guiding them in data analysis and algorithm development.
• Publishing research findings in peer-reviewed journals.

Java developer, StorkJet.pl July 2014 - July 2017

• Research and development of software for analysis of high-volume aviation
data.
• Batch and streaming data processing.
• Creating and designing error compensation algorithms.
• Created data visualization tools to present complex data in a user-friendly and interpretable manner for stakeholders.

Assistant Teacher, Institute of Computer Science October 2010 - September 2014

• Assisting in teaching undergraduate courses in computer science.
• Providing academic support to students through tutoring sessions and laboratory work.
• Evaluating student performance through assessments and provided constructive feedback.
• Participating in curriculum development, contributing to the design of course materials.

Education history

Institute of Computer Science October 2010 - May 2014 PhD, Computer Science
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