Rostyslav Chernychenko

Job Summary:The Director of DevOps is responsible for developing and executing strategic initiatives to enhance the reliability, scalability, and efficiency of the company's infrastructure. This role requires deep technical expertise, leadership to drive critical projects, and the ability to manage vendor partnerships to optimize costs and integrate cutting-edge solutions.

Key Responsibilities:

• Lead strategic initiatives to centralize and standardize infrastructure pipelines across all product teams to reduce deployment times.
• Ensure and maintain high-availability targets (99.995% uptime) for core business services.
• Champion and drive the adoption of a fully automated "Infrastructure as Code" (IaC) strategy using Terraform and Kubernetes to reduce resource provisioning time.
• Negotiate and manage key partnerships with external cloud and tooling providers.
• Integrate and manage logging and monitoring solutions to deliver organization-wide observability.
• Optimize licensing and operational costs associated with third-party tools and cloud services.
• Lead complex migration projects, such as the transition to a multi-cloud environment (GCP, AWS), to provide critical disaster recovery capabilities and vendor diversification.
• Establish, implement, and monitor key Service Level Objectives (SLOs) and Service Level Indicators (SLIs) to drive an organization-wide focus on reliability and performance.

Senior Engineering Manager, Platform / Infrastructure

• I led, hired, mentored, and managed a team of skilled software and infrastructure engineers, fostering their career growth and technical development.
• I cultivated a strong engineering culture of ownership, operational excellence, and continuous improvement within my team.
• I oversaw the execution of strategic projects, such as the centralization of infrastructure pipelines to reduce deployment times and improve developer efficiency.
• I drove the implementation of an "Infrastructure as Code" (IaC) strategy using technologies like Terraform and Kubernetes to automate and streamline resource management.
• I managed the planning and delivery of complex initiatives, including a multi-cloud migration to GCP and AWS to enhance disaster recovery and vendor diversification.
• I empowered my team to achieve and maintain stringent reliability targets, such as 99.995% uptime, by establishing and tracking key SLOs and SLIs.
• I guided the team in selecting and integrating robust monitoring and observability solutions, ensuring organization-wide visibility while managing vendor costs.
• I partnered with product managers, architects, and other engineering leaders to define the platform roadmap and managed technical relationships with key cloud and tooling providers.

Head of DevOps

• I defined and owned the company-wide vision for a unified, scalable, and resilient platform, driving the strategy for infrastructure, CI/CD, and site reliability.
• I established "Infrastructure as Code" (IaC) and automation as core principles across all engineering teams to maximize efficiency and consistency.
• I led the long-term architectural direction, sponsoring and directing critical initiatives such as the strategic migration to a multi-cloud architecture (GCP, AWS) to ensure business continuity.
• I owned the technology vendor strategy, managing executive relationships and negotiations to align our tooling with strategic needs and budgets.
• I drove financial accountability for the DevOps function, leading initiatives that optimized cloud and licensing costs, achieving a 20% cost reduction in observability tooling.
• I championed a data-driven culture of reliability and performance across the engineering organization by instituting SLOs and SLIs as primary measures of success.
• I represented the DevOps function at the executive level, effectively communicating strategy, risks, and business impact to senior leadership.
• I developed and scaled a world-class DevOps organization through mentorship, strategic hiring, and by fostering a culture of technical excellence.

• I designed, built, and maintained automated CI/CD pipelines (using Jenkins/GitLab CI) for deploying cloud-native applications and services.
• I managed the deployment of containerized applications using Docker and Kubernetes (k0s), ensuring consistent environments from development through to production.
• I authored and maintained Infrastructure as Code (IaC) scripts using Terraform, Puppet, Salt-Stack to automate resource provisioning in a multi-cloud environment (AWS, GCP), reducing infrastructure setup time from days to minutes.
• I implemented and managed zero-downtime deployment strategies, including Blue-Green and Canary, which was a key factor in achieving 99.995% uptime for the core Mirantis platform.
• I integrated and configured new monitoring and logging solutions (like Prometheus, Grafana) to provide full observability into our containerized workloads, in alignment with established SLOs and SLIs.
• I was an active contributor to the multi-cloud migration project, responsible for creating and validating deployment scripts to ensure a seamless transition.

Key Responsibilities & Achievements

As a highly experienced Remote System Administrator, I specialize in ensuring the 24/7 reliability and performance of diverse server environments, including both Linux and Windows systems. I have a proven track record of deep system optimization, custom Linux OS development, and automation scripting. My expertise spans a wide range of technologies, from high-availability web stacks and databases to modern cloud and containerization platforms.

• I administered, secured, and maintained a mixed environment of remote Linux and Windows servers, providing 24/7 operational support to ensure maximum uptime and performance.
• I designed and built several custom Linux OS distributions from the ground up, tailored to specific hardware and application needs for enhanced stability and efficiency.
• I utilized my deep expertise in web technologies (Apache, NGINX, HAProxy), high-availability clustering, and a wide range of databases (MySQL, PostgreSQL, MongoDB, Redis) to architect and support robust solutions.
• Leveraging BPF, I successfully analyzed and optimized critical system bottlenecks, achieving performance gains of up to 40%.
• I developed custom automation scripts and system utilities in Perl, Python, and Haskell to streamline administrative tasks, automate deployments, and improve overall system reliability.
• I managed virtualized and cloud environments using Docker, OpenStack, and Eucalyptus, handling everything from deployment to daily operations.
• As a subject matter expert, I was invited to speak at a Security Conference, where I presented my findings on system hardening and performance optimization.

As a Computer Equipment Sales Consultant, I specialized in identifying and providing optimal technology solutions for both individual and corporate clients. I successfully combined deep product knowledge with a customer-centric approach to consistently meet and exceed sales targets.

Key Responsibilities & Achievements:

• I consulted with clients to assess their specific needs for hardware, software, and networking solutions.
• I designed and recommended custom configurations for PCs, laptops, servers, and peripherals that aligned with client budgets and objectives.
• I conducted product demonstrations, translating complex technical specifications into clear, understandable benefits.
• I consistently exceeded monthly sales targets by an average of 15-20%.
• I prepared detailed sales proposals and quotes, and managed the order fulfillment process from sale to delivery.
• I provided post-sales support, troubleshooting technical issues to ensure high levels of customer satisfaction and encourage repeat business.