Hire the Best Certified Linux Engineers

Networks look like a puzzle to most people. To me, they're just a problem I know how to solve. What I deliver: Network audits & optimization Design & migration - new builds, office expansion, hybrid/cloud Security hardening - ACLs, segmentation, firewall policies, VPNs Troubleshooting escalations - when your team is stuck, I step in. Root causes, not symptoms. Mentoring / on-call - fractional architect for teams without a full-time role Technical depth: Areas and stack: Routing & switching - Multi-vendor. Security - PFSense, OPNSense, Fortinet, Palo Alto, Cisco ASA/FTD, VPNs, segmentation Linux - Any distro, bash scripting, performance tuning Virtualization - Proxmox, VMware, Hyper-V, KVM Automation - Ansible, Terraform Observability - Zabbix, Splunk, SNMP, syslog Background: 30+ years in the field, 7 as a Cisco Networking Academy Manager and Instructor. I've designed large-scale enterprise networks for government, healthcare, and finance — example a maternity center where downtime isn't an option, campus networks for universities, and an airport-wide wireless solution. I've delivered security projects following both international best practices and local regulatory standards. I've trained and worked alongside engineers across Australia, New Zealand, the US, and beyond, and I learn as much from them as they do from me. I work self-paced, lead or go solo, and I'm still adding tools: Proxmox and Splunk a few years ago, Ansible and Terraform last year. This year I'm diving into AI infrastructure — GPU clusters, distributed training, high-throughput data pipelines. I'm also building deeper into Python and scripting to support automation and development from the ground up. How I work: Clear communication, no jargon. English fluent. Documentation-driven: diagrams, runbooks, handoff notes. Available 20–40 hrs/week. Fixed-price or hourly — whatever fits. Ready to solve your network puzzle? Send me an invite.

⭐ 100% Job Success | 🌟 Rising Talent | 🚀 Linux & DevOps Engineer I help founders and developers deploy, fix, and scale their infrastructure. From broken Docker containers and Nginx issues to full VPS deployments with SSL and CI/CD — I focus on solving real infrastructure problems fast and cleanly. What I work with: • Docker & Docker Compose • Linux / Ubuntu servers • Nginx & reverse proxies • CI/CD pipelines • Cloud & VPS deployments • FastAPI & PostgreSQL • Kubernetes basics • Infrastructure troubleshooting I already have hands-on experience maintaining Linux infrastructure, deploying web services, configuring SSL, and troubleshooting production issues. If your app needs deployment, debugging, or a stable server setup — I can help.

I'm a self-employed, freelance, Linux and networks Engineer, providing IT consultancy services as Data Raven Ltd (registered in England and Wales, company number 14811317, VAT registration 438-8088-55). All of my work, in all territories, is covered by Professional Indemnity Insurance. I am a Certified Zabbix Specialist. I have ten years of experience managing the infrastructure of massively multiplayer online games. I am detail oriented, and results driven. I am a proud Member of the British Computer Society (The Chartered Institute for IT). I look forward to working with you!

Struggling with unreliable infrastructure, VMware licensing costs, or a stalled cloud migration? I'm a DevOps & Cloud Engineer who builds and stabilizes production environments across AWS, Azure, Proxmox, and Ceph — with a focus on uptime and automation. Most DevOps engineers specialize in either cloud or on-prem infrastructure. I do both: I've run production Proxmox VE clusters with Ceph storage alongside AWS, Azure, and GCP deployments, and I handle VMware-to-Proxmox migrations end-to-end — a combination few freelancers on Upwork cover with hands-on production experience. Here's how I typically help clients: ✔ Design and deploy cloud infrastructure on AWS, Azure, or GCP ✔ Build and troubleshoot Proxmox clusters, including VMware-to-Proxmox migrations ✔ Optimize and recover Ceph storage clusters ✔ Set up Docker and Kubernetes environments with CI/CD pipelines ✔ Implement monitoring with Zabbix and Grafana ✔ Plan and test backup and disaster recovery strategies ✔ Secure infrastructure with VPNs, firewalls, and Zero Trust practices Top Rated Plus on Upwork with a 4.98 rating across 51 completed jobs and over 2,870 hours worked. AWS Cloud Practitioner Essentials certified. Clients include startups, MSPs, SaaS companies, and enterprise teams relying on me for production-grade infrastructure. Send me a message with what you're working on and I'll respond with next steps within a few hours.

⭐ Golden Kubestronaut and Multi-cloud certified expert 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬 Golden Kubestronaut CKA: Certified Kubernetes Administrator CKS: Certified Kubernetes Security Specialist CKAD: Certified Kubernetes Application Developer CAPA: Certified Argo Project Associate PCA: Prometheus Certified Associate ICA: Istio Certified Associate OTCA: OpenTelemetry Certified Associate CGOA: Certified GitOps Associate CCA: Cilium Certified Associate KCA: Kyverno Certified Associate CBA: Certified Backstage Associate LFCS: Linux Foundation Certified Systems Administrator 𝐀𝐖𝐒 AWS Certified Solutions Architect – Professional AWS Certified DevOps Engineer – Professional AWS Certified Security – Specialty AWS Certified Advanced Networking – Specialty 𝐆𝐨𝐨𝐠𝐥𝐞 Professional Cloud Architect Certification Professional Cloud DevOps Engineer Certification Professional Cloud Network Engineer Certification Professional Cloud Security Engineer Certification 𝐀𝐳𝐮𝐫𝐞 Microsoft Certified: DevOps Engineer Expert ⭐ Total of 10+ years of mixed experience in DevOps, Cloud Migration and infrastructure design Battle-tested DevOps engineer with more than 10 years specializing in bare-metal servers, virtualization /containerization environments (OpenStack, OpenShift), and public cloud providers (AWS, Google Cloud, Azure). I have helped my clients achieve the following: ■ 75% reduction in lead time for changes ■ 70% reduction in change failure rate ■ 80% increase in deployment frequency ■ 70% reduction in mean time to recovery ■ Setting up and managing production Kubernetes clusters with excellent API responsiveness (99% of all API calls return in less than 1 second) and Pod startup time (99% of pods start within 5 seconds) Top-notched in-depth knowledge and hands-on experiences in Kubernetes ecosystem and containerization world. Certified by Cloud Native Computing Foundation (CNCF) in various certification programs: Golden Kubestronaut Familiar with DevOps tools and software: Terraform, Jenkins, CircleCI, GitlabCI, ArgoCD, Ansible, Vault, SonarQube, Nexus, Jfrog, Kafka, Zookeeper, ELK, Datadog, Grafana, Prometheus, Istio, Cillium, Alert Manager, Checkpoint I work as the lead infrastructure engineer at Bao Viet Holdings, the largest Vietnamese insurance company, and Vietnam's seventh-largest listed company by market capitalization. Given that the organization is publicly traded (HOSE: BVH), it mandates the highest security level measures. One of my core duties is to manage the whole infrastructure and servers, ensuring full operational capacity, functionality, and security, as below: ■ Optimizing test automation, trunk-based development, and working in small batches ■ Consciously tracking and reporting on change failure rates ■ Implementing an automated deployment pipeline that incorporates automated testing and feedback mechanisms ■ Continuously monitoring system health and alerting operations staff in the event of a failure ■ Equipping operations staff with the necessary processes, tools, and permissions to resolve incidents Need a similar secured infrastructure and CI/CD pipeline setup for your team? Let's have a quick chat 💬

I am highly skilled and certified in the AWS environment. I have been working with AWS for 10+ years now and run multiple production workloads across many AWS services. I currently have all eight AWS certifications (You can verify those certifications below in my portfolio) I attend the AWS re:Invent conference every year and stay current with their latest services and offerings. I am also a member of the AWS Partner Network. I have worked with the following AWS Services: IAM RDS (MySQL, SQL Server, Aurora) Elasticache (memcached, redis) CloudFront S3/Glacier ELB/ALB EC2 AutoScaling SNS SQS CloudWatch (Events, Logs, Alarms) CloudFormation CloudTrail VPN VPC Route53 DirectConnect Lambda (mostly python) API Gateway IoT CodeDeploy CodePipeline Amazon ECS/ECR (Docker) WAF EMR Kinesis DynamoDB ECS EKR These aren't just acronyms of services I've heard of, I actually work with them every day. If you are serious about finding a real engineer with real-life AWS experience building highly-scalable, fault-tolerant applications while following AWS best practices then look no further. I eat, sleep and breathe AWS architecture and work with it every day.