Gabriel Kieruzel

Developer FullStack @Self-employed

✔️ ITFrontend DeveloperiOS DeveloperTech SupportData Engineer

Front-end Developer specializing in React, JavaScript, and TypeScript, creating responsive web interfaces. Experienced in iOS app development, with a focus on intuitive mobile user experiences. Collaborate with designers and UX/UI specialists using Zeplin for accurate visual design implementation. Skilled in integrating front-end with back-end systems and PostgreSQL databases via REST APIs. Utilize modern React features like function components with hooks. Employ Storybook for component management, ensuring team communication and project consistency. Proficient in Git for maintaining clean code history. Contribute to CI/CD processes, enhancing deployment efficiency. Also experienced in Android development using Java and Kotlin, showcasing versatility in mobile app development.

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Work Background

Self-employedSoftware Developer for Frontend and Mobile

May. 2022Developer in React-based front-end applications, utilizing JavaScript and TypeScript to create responsive and user-friendly web interfaces. • Experienced in developing iOS applications, demonstrating proficiency in creating intuitive and efficient mobile user experiences. • Collaboratively work with graphic designers and UX/UI specialists using Zeplin (https://zeplin.io/) for precise implementation of visual designs. • Skillfully integrate front-end systems with Java-based back-end architectures and PostgreSQL databases via REST APIs, ensuring cohesive and efficient application performance. • Utilize modern React features such as function components with hooks, enhancing application functionality and user engagement. • Employ Storybook for managing a comprehensive catalog of components, improving communication within the development team and ensuring consistency across projects. • Proficient in Git, maintaining best practices in branching, merging, rebasing, and squashing commits for a clear and organized code history. • Contribute to the CI/CD process with an in-house system for building applications, streamlining deployment and ensuring high-quality software releases. • Previous experience in Android development using Java and Kotlin, demonstrating a broad skill set and adaptability in mobile application development.

CGISenior Software Engineer

Nov. 2021 - May. 2022PolandIn my role as a System Engineer at CGI, I was responsible for managing and maintaining a diverse set of systems based on Linux and Windows (Wintel), ensuring seamless data exchange and system interoperability for Electricity and Gas companies. My key responsibilities included: • Overseeing the accurate and timely delivery of gas and electricity usage data to the billing departments of utility companies, playing a critical role in their billing processes. • Monitoring system performance using Zabbix, actively ensuring system reliability and data integrity. • Efficiently handling requests from a ticketing system in adherence to Service Level Agreements (SLAs), ensuring prompt and accurate responses. • Participating in patching and upgrading processes, maintaining system security and efficiency. • Developing a variety of tools through scripting in PowerShell for Windows environments, and Python for Linux systems, enhancing operational capabilities. • Actively monitoring systems using tools like PowerShell, Python, Zabbix, and GrayLog, ensuring continuous operation and data accuracy. • Addressing and resolving system issues promptly to minimize downtime and maintain consistent data flow for critical operations. Playing a role in the introduction of Agile methodology within the team, participating in 2-week sprints and regular retrospective meetings to continuously improve processes and team efficiency. This role required a mix of technical skills, agility, attention to detail, and th

NetCracker TechnologySystems Engineer

Mar. 2013 - Nov. 2021Katowice Area, PolandSupporting billing application for broadband communications firm across europe (Poland, Czech Republic, Hungary, Slovakia, Luxembourg, Nederlands, UK). Duties cover hotfixes to core components of the application which includes source code modifications, db updates, communication between client and other developers ( Main dev department is located in Israel). Diagnosis, analysis of variety of systems ( network, db links, web interfaces). Netchnologies in use are Windows, Unix ( Solaris ), Oracle ( Db engine), Vmware and Citrix, Weblogic.

LuxoftSystem Engineer

Aug. 2011 - Mar. 2013Maintenance and support of production environment. Involves plenty of technologies. Main focus on scripting using powershell and python scripts for maintenance tasks on virtual machines running windows operating system.Close cooperation with storage team regarding snapshots and other backup solutions. Testing components involved in production in UAT before release.

Capgemini PolskaVMware engineer

Jan. 2008 - Jul. 2011Creating and maintaining virtual environment using VMware solutions. This includes Vmware Infrastructure 3.5 series and further VSPhere suite (4.0,4.1). Virtualizing physical environments (P2V). Maintenance of storage infrastructure using NetAPP solutions. Managing backups and replication. Monitoring of performance of virtual infrastructure.

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