I help organizations modernize, secure and operate mission-critical Linux environments.

With more than two decades of experience in enterprise infrastructure, I specialize in Linux architecture, reverse proxies, messaging systems, automation and security hardening. My goal is simple: build reliable systems that are easy to operate, secure by design and prepared for future growth.

About Me

I'm an independent Linux Infrastructure & Security Consultant with extensive experience designing and operating enterprise Linux environments.

Over the past 20+ years, I have supported public sector organizations, enterprise customers and managed service providers in planning, implementing and maintaining secure, highly available Linux platforms.

Rather than focusing on individual technologies, I focus on designing complete infrastructure solutions that combine reliability, automation and security.

My consulting philosophy is pragmatic: understand the business requirements first, then implement the simplest solution that reliably solves the problem.

Core Competencies

Enterprise Linux

• Debian

• Red Hat Enterprise Linux

• AlmaLinux

• Rocky Linux

• Ubuntu Server

• SUSE Linux Enterprise

Infrastructure Architecture

• High Availability

• Reverse Proxy

• Load Balancing

• Web Infrastructure

• Network Services

• Virtualization

• Infrastructure Design

• Performance Optimization

Security

• Apache HTTP Server

• Squid Proxy

• TLS / SSL

• PKI

• Security Hardening

• Authentication

• Access Control

• Security Reviews

• Best Practices

Messaging

• Postfix

• Dovecot

• SMTP

• Mail Security

• Spam Protection

• TLS Encryption

• High Availability

Automation

• Bash

• POSIX Shell

• Ansible

• Git

• System Automation

• Monitoring

• Configuration Management

Professional Highlights

Enterprise Linux Architecture

Designed and implemented Linux infrastructures for enterprise customers with a strong focus on stability, security and maintainability.

Migration Projects

Planned and executed numerous Linux migration projects while minimizing operational downtime and business impact.

Reverse Proxy & Web Security

Designed highly available Apache and Squid proxy environments supporting secure access to business-critical applications.

Messaging Infrastructure

Implemented secure Postfix and Dovecot environments with modern authentication and encryption standards.

Automation

Reduced operational effort through automation of provisioning, deployment, maintenance and monitoring using Ansible and Bash.

Security Consulting

Performed security reviews, infrastructure hardening and operational improvements based on industry best practices.

Professional Experience

Founder & Senior Linux Infrastructure Consultant

Kesinlik Ltd.

2002 – Present

Providing consulting services in

• Linux Infrastructure

• Enterprise Architecture

• Security

• Automation

• Reverse Proxy

• Messaging

• High Availability

• Performance Optimization

• Infrastructure Modernization

Supporting organizations throughout the entire lifecycle—from architecture and planning to implementation, migration and long-term operations.

Earlier Career

Before founding Kesinlik Ltd., I gained extensive practical experience in Linux administration, ISP operations and enterprise infrastructure.

These early positions established the technical foundation for my current consulting work in enterprise architecture and security.

Selected Technologies

Operating Systems

Debian • RHEL • AlmaLinux • Rocky Linux • Ubuntu • SUSE

Web Infrastructure

Apache HTTP Server • Squid • HAProxy • Nginx

Messaging

Postfix • Dovecot • SMTP • IMAP

Automation

Ansible • Bash • Git

Security

TLS • PKI • Reverse Proxy • Hardening • Authentication

Monitoring

Nagios • Check_MK

Consulting Focus

✔ Enterprise Linux Architecture

✔ Infrastructure Modernization

✔ Security Hardening

✔ Reverse Proxy Platforms

✔ Messaging Solutions

✔ Linux Automation

✔ High Availability

✔ Performance Optimization

✔ Technical Consulting

Certifications

Rather than collecting certificates, I continuously invest in practical knowledge and real-world project experience.

Professional development includes Linux, Microsoft, VMware and various infrastructure and security technologies accumulated throughout more than two decades of consulting.

Philosophy

Technology should simplify business—not complicate it.

I believe good infrastructure is largely invisible: secure, stable, automated and easy to operate. My objective is to deliver solutions that remain maintainable and reliable long after the project has been completed.

Contact

Let's build reliable Linux infrastructures together.

If you're looking for an experienced Linux Infrastructure Architect or Security Consultant, I'd be happy to discuss your next project.