Summary
Overview
Work History
Education
Skills
Websites
Select Achievements
Keywords
Timeline
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Hany Mahajna

Senior DevOps Engineer | Kubernetes & AWS Cloud Architect
Umm el Fahm,HA

Summary

Experienced DevOps Engineer with 8 years of expertise leading Infrastructure as Code, CI/CD, and Agile initiatives in innovative tech settings. Specializing in Kubernetes (EKS), Istio service mesh, and AWS cloud architecture, delivering flawless zero-downtime blue/green & canary deployments. Proficient in using chaos engineering to test system resilience and aligning Service Level Objectives (SLOs) with critical business KPIs. Prepared to bring innovative solutions to complex challenges, known for reliability and adaptability, with a strong focus on team collaboration and achieving results. Offering an 8-year background setting up CI and CD pipelines and scripting deployment activities, committed to proactively managing change and quickly deploying critical applications. Skilled in configuration management, Agile, Scrum, and Waterfall methodologies, dedicated to achieving demanding development objectives according to tight schedules while producing impeccable code.

Overview

13
13
years of professional experience
2014
2014
years of post-secondary education
3
3
Languages

Work History

Devops TL

PayU Enterprise
Tel Aviv
07.2024 - Current
  • Led the design and execution of enterprise-grade disaster recovery strategies across EKS clusters.
  • Drove resilience engineering through proactive chaos testing, infrastructure hardening, and continuous validation of business continuity under real-world failure scenarios.
  • Delivered major cost savings (>50%) by leading the migration from Akamai to CloudFront and implementing Karpenter-based autoscaling across production workloads.
  • Developed and maintained real-time FinOps dashboards, enabling visibility into cluster efficiency, reducing over-provisioning, and supporting data-driven scaling decisions.
  • Mentored DevOps engineers on DR, FinOps, and infrastructure best practices—embedding a culture of operational excellence, cost awareness, and automation-first thinking.
  • Self-motivated, with a strong sense of personal responsibility.
  • Excellent communication skills, both verbal and written.
  • Proven ability to learn quickly and adapt to new situations.
  • Worked well in a team setting, providing support and guidance.

Senior DevOps Engineer

PayU Enterprise
10.2015 - Current
  • Zero-Downtime Deployments: Architected GitLab CI/CD pipelines for rolling AMI updates, Kubernetes control-plane upgrades, and Istio mesh versioning—maintaining 99.99% availability.
  • Governance & Automation: Developed custom Kubernetes admission webhooks and integrated OPA policy scans into CI—automatically enforcing image, label, and resource-quota standards.
  • Disaster Recovery Simulations: Led full DR drills—restored EKS clusters from GitLab and Cassandra backups, executed automated load tests, and validated sub-15-minute failover (RTO).
  • CDN Migration & A/B Testing: Migrated from Akamai to AWS CloudFront with weighted Route 53 DNS cutovers, TTL tuning, and SSL termination—achieving 6× cost reduction and 35% cache-hit-ratio boost.
  • Compute Cost Reduction (50%+): Built Grafana dashboards for CPU/memory profiling; standardized resource requests via Helm; deployed Karpenter spot/on-demand provisioners for dynamic scaling.
  • Strategic Leadership & Communication: Presented roadmaps, SLO metrics, and ROI analyses on DR, Kubernetes upgrades, and cost optimizations to engineering leadership and product teams.
  • Team Leadership: Over the past year, led the Ops team—mentored engineers, coordinated on-call rotations, and drove cross-functional collaboration to improve operational excellence.
  • 99.99% Uptime Compliance: Maintained SLA during major infra upgrades and fault-injection tests.
  • Policy-Driven Security: Enforced compliance with OPA/Gatekeeper and admission webhooks across 100+ namespaces.
  • FinOps Excellence: Reduced monthly infrastructure spend by 60% through autoscaling and CDN re-architecture.
  • Resilience Engineering: Validated recovery objectives in full-scale DR and chaos engineering scenarios.
  • Executive Alignment: Secured stakeholder buy-in through clear ROI and SLO dashboards.

Automation Engineer

HP
11.2012 - 10.2015
  • Developed and implemented automated testing frameworks, enhancing software reliability and reducing manual testing effort.
  • Collaborated with cross-functional teams to define automation requirements, ensuring alignment with project goals and timelines.
  • Utilized tools such as Selenium and Jenkins to streamline CI/CD processes, improving deployment efficiency and software quality.
  • Conducted code reviews and provided feedback to junior engineers, fostering a culture of continuous improvement within the team.
  • Analyzed existing manual processes to identify automation opportunities, resulting in significant time savings and increased accuracy in testing workflows.

Education

B.Sc. - Computer Science

Kinneret College On The Sea of Galilee
05.2011

Skills

Kubernetes

EKS

Docker

Helm charts

Istio

AWS

Terraform

GitLab CI/CD

Blue/Green releases

Canary releases

Nodejs

JavaScript

Bash

Disaster Recovery

full-scale DR drills

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Select Achievements

  • 99.99% Uptime Compliance: Maintained SLA during major infra upgrades and fault-injection tests.
  • Policy-Driven Security: Enforced compliance with OPA/Gatekeeper and admission webhooks across 100+ namespaces.
  • FinOps Excellence: Reduced monthly infrastructure spend by 60% through autoscaling and CDN re-architecture.
  • Resilience Engineering: Validated recovery objectives in full-scale DR and chaos engineering scenarios.
  • Executive Alignment: Secured stakeholder buy-in through clear ROI and SLO dashboards.

Keywords

  • DevOps
  • Infrastructure as Code
  • CI/CD
  • GitLab CI/CD
  • Kubernetes
  • EKS
  • Istio
  • AWS
  • Chaos Engineering
  • Resilience
  • DevSecOps
  • FinOps
  • Disaster Recovery
  • Blue/Green Deployment
  • Canary Release
  • Admission Webhooks
  • Autoscaling
  • SLO/SLA

Timeline

Devops TL

PayU Enterprise
07.2024 - Current

Senior DevOps Engineer

PayU Enterprise
10.2015 - Current

Automation Engineer

HP
11.2012 - 10.2015

B.Sc. - Computer Science

Kinneret College On The Sea of Galilee

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Hany MahajnaSenior DevOps Engineer | Kubernetes & AWS Cloud Architect