Empowering Digital & Business Transformation
Technology & business consulting for Telcos, Large Enterprises, and IT leaders
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Introduction.
Proximus Consulting brings deep domain expertise across telecom solutions, cybersecurity, and business transformation. We partner with clients to streamline operations, secure infrastructure, and scale with confidence.
From strategy to execution, we deliver tailored consulting that bridges technology and business—helping organizations navigate complexity and achieve sustainable growth.
Meet The Founder
Costa Mitsios, the founder of Proximus Consulting, brings over 25 years of senior leadership experience in technology and business operations. With a strong foundation in service delivery, telecom infrastructure, cybersecurity, and operational excellence, he has held pivotal roles in top-tier companies in Greece and Europe.
Costa Mitsios holds a series of globally recognized certifications that reflect his deep technical knowledge and commitment to excellence:
- PMP® Certification
- ITIL v4 Certificate
- Six Sigma Black Belt
- CISA Certification
- CISSP Certification
- CISM Certification
Our Core Values
At Proximus Consulting, our values are the foundation of every engagement. They guide our actions, shape our culture, and define how we deliver results. We believe that lasting client relationships are built on trust, excellence, and a shared commitment to continuous improvement.
Optimize. Align. Grow.
Turn operational complexity into streamlined performance with data-driven process improvement and strategic consulting.
“Empower your business with smarter processes and agile execution—start your transformation with ProXimus.”
Automate Voice. Strengthen Security. Drive Resilience.
We help complex enterprises and telecom operators modernize their infrastructure and defend their digital assets through advanced automation, voice service engineering, and proactive cybersecurity strategies.
Think like an attacker to protect like a leader.
We offer advanced red teaming, penetration testing, and adversary simulation consultancy to expose real-world vulnerabilities across your digital footprint. Our offensive cybersecurity approach helps you validate your security posture, prioritize remediation, and prepare for real attacks—not just theoretical ones. Any time you want. Every time you want
Clarity in Complexity. Confidence in Execution
We guide organizations through high-stakes digital initiatives with expert consulting that bridges technology and business. No jargon—just results.
