В'ячеслав

Viacheslav Pieshko Devops Engineer
Phone: [відкрити контакти](див. вище в блоці «контактна інформація») | Email: [відкрити контакти](див. вище в блоці «контактна інформація») | Location: Kyiv, Ukraine
DevOps Engineer with strong expertise in AWS, GCP, Kubernetes, and Infrastructure as Code. Proven track record building scalable
platforms, implementing GitOps with Flux v2, optimizing traffic via HAProxy/NGINX and Istio, and deploying OpenSearch in k8s
(including migrations from Elasticsearch). Background in Problem Management and Customer Support (QC and operator training)
gives a solid mix of technical depth and operational excellence.

SKILS
• Cloud: AWS (EKS, ALB/NLB, ACM, KMS, Route 53, MSK), GCP
• IaC: Terraform, Terragrunt (reusable modules, multi-env patterns)
• Kubernetes: EKS, Istio (gateways, traffic split), Flux v2 (GitOps), Helm, Kustomize
• Search/Logging: OpenSearch Operator, migration from Elasticsearch
• Traffic & Proxies: HAProxy, NGINX/OpenResty (Lua header/body rewrite), CNAME masking, TLS
• CDN & Caching: S3 + Cloudflare caching; NGINX in k8s caching S3 to reduce network load
• Monitoring/Observability: Prometheus, VictoriaMetrics, Alertmanager, Grafana OnCall, Vector
• Reliability: On-call rotations, incident response, troubleshooting
• Problem Management: RCA, post-mortems, preventive actions
• Collaboration: Cross-team coordination (Dev, QA, Business), documentation, training
PROFESSIONAL EXPERIENCE
DevOps Engineer | 2023 - Present
GR8 TECH
Designed and operated multi-cloud infrastructure in AWS and GCP with Terraform/Terragrunt, building reusable modules that
cut environment setup time.
Rolled out OpenSearch on Kubernetes via Operator and managed migration from Elasticsearch, ensuring zero log loss.
Migrated EKS node scaling from Cluster Autoscaler to Karpenter, which improved scaling speed and reduced compute costs.
Built flexible traffic management using HAProxy and NGINX/OpenResty (Lua rewrites, TLS, CNAME masking) to simplify
routing and CDN integration.
Strengthened observability by deploying Prometheus, VictoriaMetrics, Alertmanager, Grafana OnCall, Vector, reducing mean-
time-to-detect for incidents.
Regularly took part in the on-call rotation, handling production incidents and coordinating fixes
DevOps Engineer | 2022 - 2023
PARIMATCH TECH
Built and supported cloud infrastructure in AWS with Terraform; introduced reusable IaC patterns for faster rollout.
Researched and deployed a custom Web UI for managing images in S3, simplifying daily operations for internal teams.
Adopted Flux v2 to bring GitOps practices into Kubernetes, improving change visibility and deployment reliability.
Re-architected traffic routing with AWS ALB + Istio Gateways, separating frontend and backend flows for better performance.
Migrated static content to S3 with Cloudflare CDN, cutting page load times and reducing cluster bandwidth usage.
Deployed NGINX cache in Kubernetes to offload S3 requests, improving latency for frequently accessed data.
Helped troubleshoot infrastructure issues, ensuring stable operations.
Participated in on-call schedules, resolving incidents and documenting fixes.

Problem Manager| 2020 - 2022
PARIMATCH TECH
Drove the Problem Management process: led RCAs, coordinated fixes, and tracked follow-up actions.
Partnered with DevOps, QA, and Development teams to identify recurring patterns and implement long-term preventive
solutions.
Delivered clear post-mortems to stakeholders, balancing technical detail with business impact.
Reduced incident recurrence rate by implementing preventive actions and knowledge-sharing practices.
L1 Technical Support Engineer| 2019 - 2020

PARIMATCH TECH

Delivered first-line technical support for applications, networking, and infrastructure issues.
Handled ticket triage, prioritized urgent cases, and escalated when necessary.
Monitored systems and performed routine checks to keep services stable.
Gained strong troubleshooting skills and incident response experience that became the basis
for DevOps work

L1 Technical Support Engineer| 2019 - 2020

PARIMATCH TECH

Delivered first-line technical support for applications, networking, and infrastructure issues.
Handled ticket triage, prioritized urgent cases, and escalated when necessary.
Monitored systems and performed routine checks to keep services stable.
Gained strong troubleshooting skills and incident response experience that became the basis
for DevOps work

Quality Control Manager in Customer Support Service| 2016-2019

PARIMATCH TECH

Monitored and improved the quality of support interactions, auditing tickets for accuracy and
professionalism.
Designed and ran training programs for the team, boosting both speed and customer
satisfaction scores.
Onboarded and coached new operators, helping them adapt quickly and maintain high
standards.
Used KPIs and customer feedback to spot weak points and introduce improvements.
Collaborated with Support, Product, and Operations teams to raise the overall customer
experience.

Support Service Operator| 2015-2016

PARIMATCH TECH

Provided front-line support via phone, chat, and email, solving common issues and escalating
complex ones.
Logged tickets and tracked follow-ups to ensure customers got timely answers.
Maintained strong customer satisfaction thanks to clear communication and patience.
Documented recurring issues and contributed to FAQ content.

EDUCATION

Kyiv National University of Technologies and Design| 2010-2014

Master, Equipment of Light and Service industries

LANGUAGE

• Ukrainian: Native
• English: Upper Intermediate