Terminal command line interface with Linux system code
Available for Hire

vedran jakovac

LINUX GURU / AWS EXPERT
DEVOPS & SECURITY ENGINEER

I cut AWS bills, stop DDoS attacks, and make infrastructure fast and resilient. From bare-metal Linux to Kubernetes, Cloudflare to HAProxy — I tune systems that run your business.

76M
Requests/hr mitigated
64%
AWS cost reduction
15+
Years experience
GET IN TOUCH VIEW SERVICES
What I Do

CORE EXPERTISE

Full-stack infrastructure consulting. From kernel tuning to edge security, I optimize every layer of your stack.

Linux Administration

LINUX SYSTEMS

Deep OS-level expertise across Ubuntu, CentOS, RHEL, and Debian. Kernel tuning, performance optimization, and production hardening.

Ubuntu CentOS RHEL Debian Kernel Tuning
Cloud & AWS

AWS OPTIMIZATION

Architecture reviews, cost reduction strategies, and performance tuning. EC2, ECS, RDS, CloudFront, Shield Advanced, and more.

EC2 ECS RDS CloudFront Cost Optimization
DDoS Mitigation

DDOS DEFENSE

Layer-7 attack mitigation, HTTP/2 Rapid Reset defense, bot flood containment. Emergency response within hours.

Cloudflare WAF L7 Attacks Bot Management Rate Limiting
Web Servers

NGINX & HAPROXY

High-performance web server configuration, load balancing, SSL termination, reverse proxy setups for high-traffic sites.

Nginx HAProxy Apache SSL/TLS Load Balancing
DevOps

DOCKER & DEVOPS

Containerization, CI/CD pipelines, infrastructure as code. Streamlined deployments from staging to production.

Docker Kubernetes CI/CD Terraform Ansible
E-Commerce

WEB PERFORMANCE

WordPress, Magento, and custom CMS optimization. Cache strategies, CDN tuning, and database performance for high-traffic stores.

WordPress Magento MySQL Redis CDN
40+
Clients served
87%
Attack RPS reduction
0.3%
Error rate achieved
4HR
Emergency response
Pricing

ENGAGEMENT OPTIONS

Fixed-fee packages. No hourly billing surprises. If mitigation targets aren't met, fees are refunded.

$1,000
Fixed Fee

EMERGENCY CONTAINMENT

Active DDoS attack? I start containment within hours.

  • Traffic analysis & attack profiling
  • WAF rule deployment
  • Rate limiting & bot blocks
  • Origin protection
  • Post-incident report
$1,800
2-Week Sprint

INFRASTRUCTURE HARDENING

Proactive security audit and full-stack optimization.

  • Complete infrastructure audit
  • Cloudflare/AWS optimization
  • Bot management setup
  • Performance tuning
  • Monitoring & alerting
  • Team runbook & training
$2,700
Monthly Retainer

ON-CALL COVER

Ongoing incident response and infrastructure management.

  • 24/7 incident response
  • Continuous rule tuning
  • Monthly security reviews
  • Performance monitoring
  • Cost optimization
  • Priority support
Proven Results

RECENT CLIENT OUTCOMES

Anonymized results from real engagements. Metrics verified by clients.

87%
Fintech API

Cut malicious RPS by 87% in 23 minutes. 5xx error rate dropped from 12% to 0.3%.

76M
E-commerce

Mitigated 76 million requests/hour in real-time. Competitor-driven attack. Zero sales impact.

64%
AWS Cost Reduction

Reduced AWS egress costs 64% through cache & WAF tuning during Black Friday sale.

Client Reviews

WHAT CLIENTS SAY

Verified 5-star reviews from Upwork clients.

★★★★★

When working with Vedran it was immediately apparent that he knew his stuff inside and out! We will very likely hook him in the future. 100% recommend.

Verified Upwork Client
★★★★★

Vedran was fantastic to work with and is a talented developer. He helped us get a site up at a critical time after a security issue. Highly recommend.

Verified Upwork Client
★★★★★

Quickly helped us defend against DDoS attack and resolved new attacks very quickly. If we ever need help again, I know where to find the guy who can protect us!

Verified Upwork Client
★★★★★

Great to work with, excellent skills and turnaround time. Solved our issues.

Verified Upwork Client

View all reviews on Upwork →

Technologies

TOOLS & PLATFORMS

Linux Ubuntu CentOS RHEL Debian AWS EC2 CloudFront RDS AWS Shield Cloudflare WAF Nginx HAProxy Apache Docker Kubernetes Terraform Ansible CI/CD MySQL PostgreSQL Redis WordPress Magento Git Bash Python Fastly DigitalOcean
How I Work

ENGAGEMENT PROCESS

01

ASSESS

Logs, traffic patterns, infra map, attack vectors. Full situational awareness.

02

STABILIZE

Path/method rules, rate limits, cache shields. Stop the bleeding fast.

03

HARDEN

Bot management, origin protection, monitoring alerts. Long-term resilience.

04

HAND-OFF

Runbook, dashboards, team training. You own the knowledge.

FAQ

COMMON QUESTIONS

CAN YOU HELP RIGHT NOW?
Yes. Use the contact form marked urgent. I'll triage and start containment immediately after access is granted.
WHAT ACCESS DO YOU NEED?
Temporary access to your edge/WAF (Cloudflare/AWS/other), read-only app logs, and someone from your team for context. I work under NDA.
WILL YOU REPLACE CLOUDFLARE/AWS SHIELD?
No. I tune and augment them with targeted rules and origin hardening so they block more and break less.
DO YOU HANDLE NON-DDOS WORK?
Absolutely. AWS cost optimization, server migrations, Nginx/HAProxy tuning, Docker setups, WordPress/Magento performance — full-stack Linux infrastructure is my domain.
WHAT IF TARGETS AREN'T MET?
If mitigation or optimization targets aren't met within the agreed timeframe, consultation fees are refunded. Results-focused approach.
DO YOU SIGN NDAS?
Yes. I sign NDA/DPA agreements. I only access what's required and provide a data-handling summary in the runbook.
About

VEDRAN JAKOVAC

I'm a hands-on infrastructure engineer with 15+ years in Linux systems, cloud architecture, and security. I combine deep OS-level knowledge with modern DevOps practices to build systems that are fast, secure, and cost-efficient.

My specialty is making existing infrastructure work harder — whether that's cutting your AWS bill in half, stopping a DDoS attack mid-flight, or getting your Nginx config to handle 10x more traffic. I don't sell software. I tune what you already have.

Based in Croatia (CET/CEST timezone). Available globally for remote engagements and emergency response.

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Let's Talk

GET IN TOUCH

Share details about your infrastructure challenges. Whether it's an active DDoS attack, AWS cost review, or server optimization — I'll respond within 24 hours.

Response: Within 24 hours (4hr for emergencies)
Timezone: CET/CEST (Central European)
Availability: Remote, global engagements
NDA: Available on request