Our team

Meet the team

Senior practitioners across penetration testing, cloud security, and security leadership.

Kelvin O. Medina, Founder & Managing Principal

Kelvin O. Medina

Founder & Managing Principal

CISSP · GCIH · CISA · ITIL · AWS Security & Architecture certifications · Former QSA

Through ControlSolid, Kelvin provides virtual and fractional CISO services and security advisory, helping leaders turn security strategy, governance and risk priorities into prioritized roadmaps.

Kelvin began his career with the U.S. Navy. Previously, he was an AWS Senior Security Engineer & Global Program Owner and served as Security Manager at Trustwave. His technical background spans cloud, application and payment security.

Kelvin O. Medina on LinkedIn →
Roberto Maldonado, Principal Penetration Tester

Roberto Maldonado

Principal Penetration Tester

OSCP · GXPN · CISSP · PE (licensed Professional Engineer) · Security+ · Linux+

Roberto brings more than a decade of offensive security and security engineering experience in U.S. federal and defense environments. He has led penetration tests across Federal Aviation Administration (FAA) National Airspace System networks, applications and industrial control systems (ICS/SCADA) infrastructure, and ran red team and adversarial assessments, including serving as the opposing force in Cyber Table Top exercises, at the Naval Surface Warfare Center Dahlgren Division.

His earlier work as a Navy hardware and embedded security engineer gives him rare depth in hardware, firmware and ICS testing. Roberto is a licensed Professional Engineer, holds a BS in Electrical Engineering (magna cum laude) from the University of Puerto Rico, and is bilingual in English and Spanish.

  • Network & web application testing
  • Red teaming
  • ICS/SCADA
  • Hardware & embedded security
  • Exploit research
Michael O'Brien, Senior Cloud & Data Engineer

Michael O'Brien

Senior Cloud & Data Engineer

CompTIA Network+

Michael brings a decade of data and cloud engineering experience in regulated industries, including healthcare and financial services. At Janus Henderson Investors he led the move of legacy on-premise trading infrastructure to AWS and built high-performance Snowflake data pipelines. At Centene, one of the nation's largest Medicaid and Medicare managed care organizations, he directed an enterprise analytics platform spanning Snowflake, Oracle and Teradata, modernized with CI/CD automation.

Earlier roles at Anheuser-Busch, Goldman Sachs and BNY Mellon included a national partner portal rollout on Microsoft Azure and KYC and anti-money-laundering due diligence. Michael is also the founder of Syfer Labs, a custom software and hardware firm, and works professionally in English, Spanish and French.

  • Cloud data platforms (AWS, Azure, Snowflake)
  • Data engineering & pipelines
  • Regulated data (healthcare, financial services)
  • Analytics & reporting
Michael O'Brien on LinkedIn →
Background

Industries our team has worked in

Experience gained across our team's careers, before and through ControlSolid.

  • Government (federal, state & local)
  • Aviation & transportation
  • Critical infrastructure & industrial control
  • Cloud & SaaS
  • Payments & fintech
  • Software & payment application vendors
  • Retail & e-commerce
  • Hospitality
  • Healthcare, hospitals & health insurance
  • Financial services & trading
  • Higher education
Credentials

Team certifications

Offensive security

  • OSCP
  • GXPN
  • GCIH

Governance, risk & audit

  • CISSP
  • CISA
  • ITIL
  • Former PCI QSA

Cloud & infrastructure

  • AWS certifications
  • CompTIA Security+
  • CompTIA Linux+
  • CompTIA Network+

Engineering

  • Professional Engineer (PE)
Next step

Talk directly with the people who'll do the work

Book a call and you'll speak with a senior practitioner, not a sales rep. We'll scope what you need and tell you plainly if we're not the right fit.

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