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Location

Poland

Rate

$8  / per hour

Years of experience

5+

About

As a senior Java software developer, I have extensive experience in delivering scalable systems across various industries. My proficiency spans a wide range of languages, frameworks, and tools, ensuring a solid grasp of software development principles and methodologies. Currently based in Poland, I am fluent in English, Polish, and Russian, and possess expertise in Java, J2EE, JavaScript/TypeScript, HTML, CSS/SCSS, and Groovy. I am adept at using frameworks like Spring Boot, Angular, and Docker, and have substantial experience with ORMs, message brokers, and databases. My skillset also includes proficiency in testing tools, issue tracking systems, cloud platforms, and DevOps practices, with a comprehensive understanding of software architectures and agile methodologies. In my current role as a Senior Software Engineer, I have successfully constructed an advanced system from scratch, enhancing support efficiency by 35% and reducing resolution times by 90%. My work involves integrating data from diverse subsystems into a centralized management system, ensuring data accuracy, and implementing robust GDPR-compliant data erasure features. Previously, at Tesco Technology, I improved customer satisfaction by 30% through the development of high-quality address data systems and APIs. My freelance projects have honed my ability to analyze technical and business requirements, develop new applications, and configure AWS infrastructure. My experience at GE HealthCare and Exposit further solidified my skills in delivering high-performance, reliable systems and collaborating effectively across teams. My education includes a Bachelor's and a Master's degree in technical and economic systems from Yanka Kupala State University of Grodno.

Tech Stack

Java, Apache, CSS, Docker, Git, GraphQL, Groovy, HTML, JavaScript, NestJS, Node.js, SQL, WebLogic

Experience

  • Successfully constructed an advanced system from the ground up, boosting support efficiency by 35% and ensuring 99.9% uptime.
  • Merged data from diverse subsystems into one centralized management system, enhancing data accuracy and streamlining data practices.
  • Integrated self-service abilities for merchants, significantly reducing support tickets by 90% and improving overall system efficiency.
  • Ensured system reliability with 99.9% uptime and rapid server responses, essential for handling growing data volumes and maintaining continuous service.
  • Built and maintained modern infrastructure using Azure-native solutions, following best practices to handle extensive and increasing data traffic efficiently.
  • Developed and integrated APIs to manage address data for Tesco Technology, improving customer satisfaction by 30% and reducing support tickets by 15%.
  • Configured and set up AWS infrastructure from scratch, leading to a 25% decrease in server downtime and 50% cost savings for clients during freelance projects.

Employment history

Senior Software Engineer, ITOM July 2022 - Present

• Constructing an advanced system from ground zero, boosting support efficiency by 35%.
• Merging data from diverse subsystems into one centralized management system, enhancing data accuracy
• Refined handling and prioritizing of merchant issues, dramatically reducing resolution times by 90%.
• Incorporating self-service abilities for merchants, contributing to a 90% reduction in support tickets.
• Assuring 99.9% uptime, securing uninterrupted service and building merchant trust.
• Streamlining data practices to reduce redundancy and augment consistency across subsystems.
• Implementing robust GDPR-compliant data erasure features, bolstering data privacy and compliance.
• Integrating self-service abilities with other systems, lessening merchant support dependency by 50%.

Software Development Engineer, Tesco Technology March 2021 - July 2022

• Gathered and reveal address data of the highest quality across all countries where Tesco operates, resulting in a 30% improvement in customer satisfaction.
• Collaborated with a robust system for customers to manage their address book, including addresses for grocery delivery and phone numbers, enabling more efficient and accurate deliveries.
• Integrated with data providers in each country to gather data and Ensured that all downstream systems were aware of customers’ saved addresses and made them available through APIs, resulting in a more seamless customer experience.
• Ensured that all downstream systems were aware of customer’s saved addresses and exposed those through APIs, resulting in a more seamless customer experience and a 15% decrease in customer support tickets.
• Maintained system availability at 24/7 as address data is vital for a lot of customer journeys, resulting in no interruption of service and 99.9% uptime.
• Analyzed and updated a large database on a daily basis, resulting in a more accurate and up-to-date database with 95% data accuracy.

Senior Software Engineer / Freelancer, Transport/Enterteiment November 2019 - January 2022

• Analyzing technical and business requirements, making suggestions and recommendations for architecture, technology stack, and business logic, and creating ADR documents.
• Developing a new version of an application that communicates with an AI server from scratch.
• Engaged in new features, resolved bugs, and wrote unit and integration tests, resulting in a 20% decrease in bugs reported by users.
• Configured and set up AWS infrastructure from the ground up, migrated away from a client Linux server, resulting in a 25% decrease in server downtime and 50% cost savings.
• Take part in design discussions, experienced in identifying and documenting problems, and evaluating the effort required to solve them, resulting in a 15% increase in project completion rate.

Sr. Enterprise Application Engineer, GE HealthCare September 2018 - February 2021

• Administrates for delivering a service or integration of services with a 99% on-time delivery rate.
• Contributes to design discussions and is skilled in breaking down problems, documenting problem statements, and estimating efforts with 80% of projects completed within the estimated time frame.
• Analyse the impact of technology, frameworks, or library choices and make recommendations resulting in a 20% increase in system performance.
• Demonstrates initiative to explore alternate technology and approaches to solving problems resulting in a 25% increase in innovation within the team.
• Skilled in the development of programmatic capabilities for all aspects of service operability, resulting in a 30% increase in automation.
• Shares information across the team, to the right audience, with the appropriate level of detail and timeliness resulting in a 15% decrease in miscommunication.
• Investigate, fix, and implement new features and ability to take ownership of small and medium-sized tasks and deliver while mentoring and helping team members resulting in a 10% increase in team member productivity.
• Provides an upgrade plan for the Weblogic server for the first 10 years.
• Works independently and contributes to the immediate team and to other teams across the business resulting in a 25% increase in cross-functional collaboration.
• Expert in installing and configuring enterprise applications that meet standards and deliver desired functionality with a 95% success rate

Software Developer, Exposit July 2017 - February 2018

• Got working experience in team development.
• Used tools like Gitlab, Jira, and Confluence to manage projects.
• Explored and applied technologies such as Python/Django, Wagtail, Angular4, and Docker.
• Learned how to effectively manage my time to complete various tasks.

Internship Java Web Application Development, EPAM Systems February 2017 - May 2017

• Got an experience in single development for backend services
• Studied and applied PostgresSQL, Maven, Spring Framework, JDBC, Redis, Log4J, and Junit in practice
• Acquired deep knowledge of REST architecture, including how to create and configure it, configure spring using “XML” files, create custom object mappers, and use caching with the Redis framework
• Completed all assigned tasks for the project and designed additional tasks such as caching search results, authorization, implementing CRUD methods, and creating a load balancer.

Education history

Yanka Kupala State University of Grodno 2015 Bachelor's degree, Faculty of Mathematics and Informatics, Information Resourses
Management
Yanka Kupala State University of Grodno 2016 Master of Engineering and Technology, Methods of Analysis and Management in
Technical and Economic Systems
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