Wiktor Kisielewski

A self-taught DevOps Engineer with an curiosity for discovering new technologies and methodologies. Passionate about working with distributed computer systems, analyzing metrics, and implementing robust monitoring solutions. In free time I'm developing complex trading ecosystems and try to capture stunning aerial photos using my drone. As a firm believer in GitOps principles, I strive to ensure efficient and streamlined development processes.

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Experience

DevOps @ Oper Credits

September 2023 - Present | Gdańsk

  • Served as the main DevOps engineer, leading infrastructure management and optimization
  • Implemented GitOps workflows to streamline development processes
  • Designed and set centralized up monitoring solutions to enhance developer productivity and system reliability
  • Migrated infrastructure from AWS to GCP, improving cost efficiency and scalability
  • Automated infrastructure provisioning and deployment using Terraform and Ansible
  • Ensured high availability and reliability of systems through (not-only) Kubernetes orchestration
  • Worked on LLM/AI integrations
  • Developed an internal "ChatOps" platform to simplify workflows for developers and testers

Notable achievements:

  • Ensured ISO 27001 certification
  • Streamlined QA/TEST stage deployments, offloading the DevOps team by passing cyclical deployments to the QA team
  • Optimized workloads by migrating some services away from Kubernetes
  • Introduced a git-tag based release process

DevOps / AI Infrastructure Engineer @ SentiOne

November 2023 - September 2023 | Gdańsk

  • Played a key role as a DevOps engineer, responsible for optimizing and automating software development and deployment processes [CI/CD]
  • Collaborated with cross-functional teams to ensure smooth integration of development and operations, fostering a culture of DevOps practices
  • Provided expertise in designing, implementing, and managing on-premise and cloud-based infrastructure, both in public and private environments
  • Utilized configuration management tools, such as Ansible and Terraform, to automate infrastructure provisioning and deployment
  • Implemented continuous integration and continuous deployment (CI/CD) pipelines to enable efficient software delivery
  • Ensured high availability and scalability of systems by employing containerization and orchestration tools - Kubernetes (Vanilla/OKD/Rancher/k3s)
  • Collaborated with development teams to implement monitoring and logging solutions, enabling effective troubleshooting and proactive issue detection
  • Maintained strong focus on security, implementing robust access controls, monitoring security threats, and ensuring compliance with industry standards

Notable achievements:

  • Implemented a "self-healing" system for reducing on-call engineers' fatique
  • Created a terraform for setting up the whole environment (reducing the time needed from days to minutes)
  • Introduced a GitOps approach with ArgoCD

Junior Cloud Engineer @ Allegro Pay

August 2022 - November 2022 | Warsaw

  • Gained valuable experience working as a Junior Cloud Engineer at one of the largest Polish fintech companies
  • Managed Azure and .NET environments, ensuring optimal performance and scalability while controlling costs
  • Provided dedicated support to testers and developers, facilitating their daily work and maintaining efficient staging environments
  • Took the initiative in creating CI/CD pipelines and automating processes to improve efficiency and reliability
  • Successfully connected on-prem infrastructure with Azure Cloud resources, enabling seamless integration and data transfer
  • Played a vital role in developing and maintaining monitoring systems using infrastructure-as-code (IaC) principles, encompassing alerts, dashboards, and databases

Notable achievements:

  • Created a "self-service" pipelines to allow non-DevOps engineers to perform repetitive tasks without absorbing DevOps
  • Developed a system for keeping the DNS records and private links in Azure aligned between different regions at all times (Azure Pipelines and Powershell)

Junior DevOps @ SentiOne

July 2021 - July 2022 | Gdańsk

  • Provided dedicated support to testers and developers, ensuring smooth operations and maintaining efficient staging environments
  • Took responsibility for on-premise deployments across various client clouds and data centers
  • Developed a monitoring system using infrastructure-as-code (IaC) principles, enabling proactive issue detection and resolution
  • Handled 24/7 on-call shifts as part of the Site Reliability Engineering (SRE) team, ensuring system reliability and availability
  • Maintained core company tools, including email, chat, and Jira systems, serving as an all-around administrator, including hardware administration tasks
  • Ensured optimal performance and data integrity by keeping databases responsive, consistently backed up, and implementing robust security measures

Notable achievements:

  • Unified monitoring systems, while reducing the technical debt
  • Improved and made helm charts more consistent
  • Maintained an elasticsearch cluster with terabytes of data
  • Created, standardized, and simplified the way of provisioning bare-metal Kubernetes clusters (with docker and ansible)

IT/DC Operator @ Wirtualna Polska

February 2020 - June 2020 | Gdańsk

  • Assumed responsibility for standing on-call shifts in WP's Data Centers, promptly addressing and resolving issues
  • Developed and maintained monitoring systems to ensure smooth operations and proactive issue detection
  • Managed hardware issues in thousands of data racks, ensuring optimal performance and reliability

Education

CODE:ME - Gdansk

Front-End Course

01.2018 - 06.2019 | Gdańsk

Nine months course from basics of HTML/CSS to working in Javascript React.JS framework. Basics of SEO