
Resilient IT Infrastructure & System Administration
Calm, production-tested systems engineering for startups, SMEs, and enterprises. 15+ years architecting Proxmox virtualization, hardening Linux environments, and eliminating costly downtime.
Bottlenecks We Eliminate
The recurring failure modes we see across production environments — and remove at the root.
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System Downtime & Outages
Unplanned server crashes and network freezes that disrupt customer transactions and operations.
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Absence of Senior DevOps
Lacking dedicated senior infrastructure engineers to design resilient architectures and fix edge bugs.
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Unpredictable Cloud Costs
Spiraling AWS, GCP, or Azure bills caused by poor sizing, unoptimized bandwidth, and idle instances.
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Slow Incident Resolution
Waiting hours or days for generic support tickets while your mission-critical applications remain offline.
Engineered for Reliability and Scale
Expert systems administration, automated disaster recovery, and perimeter security designed to keep your infrastructure resilient.
Rapid Incident Response
Targeted troubleshooting to mitigate critical outages, restore services, and prevent regression.
Proactive Security Audits
CIS benchmark audits, kernel CVE patching, and strict perimeter zero-trust ingress policies.
On-Demand Consultation
Pay for senior engineering expertise only when you need it. No rigid long-term retainers.
Battle-Tested Architectures
Enterprise virtualization, automated ZFS snapshots, and multi-cloud resilience proven in production.
Production-Grade Infrastructure Services
Hands-on systems administration, cloud engineering, and cybersecurity services to eliminate outages, protect critical assets, and scale smoothly.
Linux & Virtualization (Proxmox)
Enterprise Proxmox VE hypervisor setup, HA clustering, storage pooling with ZFS, and live migration architectures.
Networking & Zero Trust
Cloudflare Zero Trust tunnels, Tailscale mesh networks, VLAN segmentation, and edge gateway firewall policies.
Infrastructure Security & Hardening
CIS benchmark audits, hypervisor CVE remediation, SSH key governance, and automated intrusion prevention.
Physical Infrastructure & CCTV
Server rack cabling, network switch deployment, and enterprise IP camera surveillance systems.
On-Demand DevOps & SysAdmin
Flexible, ticket-based or sprint-based troubleshooting for complex production errors and system tune-ups.
Cloud Migration & Cost Optimization
Migrating on-premise workloads to cost-efficient cloud providers, eliminating idle resources and trimming bills.
Verified Client Outcomes
Real feedback from engineering leaders, operation managers, and founders who trust DoWithSudo.
“Danu architected our Proxmox cluster and ZFS backup pipeline with zero downtime. Easily one of the most reliable engineers we have worked with.”
Budi Santoso
Technical Lead, PT. Niaga Dharma Selaras
“Server infrastructure became much more stable after the migration. Response time for incidents dropped from hours to minutes.”
Mr. Yayan Arwinda
Operation Manager, PT. Kreatif Warna Media
“Professional approach to network security. The audit uncovered vulnerabilities we did not even know existed, and the remediation was seamless.”
Ms. Dinda Lestari
Founder & Managing Director, PT. Madani Data Sarana
Free Engineering Tools for Sysadmins
Handy utilities for network engineers, DevOps specialists, and Linux administrators. 100% free and executed locally in your browser.
A Reliable Partner for Critical Infrastructure
Practical, dependable, and seasoned systems engineering tailored to the exact requirements of your business.
- 15+
- Years in production
- 8
- Service disciplines
- 24/7
- Incident availability
- 0
- Vendor lock-in
Rapid Response Time
Get prompt incident remediation when critical services fail. Direct communication without ticket queue bureaucracy.
15+ Years Hands-on Depth
Battle-hardened expertise across production Linux distributions, bare-metal hypervisors, and distributed networks.
Flexible Engagement Models
Engage on a per-incident, monthly retainer, or discrete project basis. Zero locked-in contracts.
Direct Senior Engineering
Work directly with Danu, a seasoned infrastructure architect, rather than junior account managers.
Latest Production Case Studies
In-depth runbooks, incident troubleshooting reports, and architecture guides written from real production experience.

Cloudflare Tunnel SSH via Web Browser and Cloudflared Client
Secure your infrastructure by exposing SSH through Cloudflare Tunnel. Configure zero-trust access policies, web rendering, and native CLI proxy.
How We Work Together
A structured, transparent consulting workflow designed to resolve issues rapidly and deliver lasting stability.
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Discovery & Triage
Reach out via our inquiry form or direct call. We examine your current architecture, bottlenecks, or outage reports.
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Technical Assessment
Receive an actionable scope of work, clear timeline, and transparent pricing tailored to your requirements.
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Execution & Hardening
Implementation with minimal or zero downtime. We conduct thorough validation tests before going live.
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Documentation & Handoff
Complete runbooks, operational diagrams, and post-service follow-up so your internal team is fully empowered.
Clear Answers to Common Inquiries
Everything you need to know about our infrastructure consulting, response SLA, and engagement terms.
Have a different question? Ask me directly.
Ask a QuestionWhat IT infrastructure services do you offer?
Server setup and maintenance, network design and configuration, cloud infrastructure management, IT security audits, firewall configuration, CCTV systems, and on-demand IT support for businesses of all sizes.
How fast is your response time for IT support?
We prioritize quick response times to minimize business downtime. Most urgent issues are addressed within hours, not days.
Do you offer on-demand IT support without contracts?
Yes. We offer flexible on-demand IT support with no long-term contracts. Pay only when you need help, with options for project-based, monthly, or per-incident pricing.
What areas do you serve for on-site IT support?
We provide both remote IT support and on-site services. Contact us to discuss your location and support needs.
Ready to Stabilize Your Infrastructure?
Schedule a no-obligation technical consultation. Let us discuss your virtualization, Linux systems, network security, or cloud architecture.
