Personal Resume (LaTeX)

resume.tex

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% author: John Mertz
% last updated: 2026-05-07
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{\Huge \color{Accent} \textbf{John Mertz}} \hfill \textit{\Huge Senior Linux System Engineer}

\begin{center}
\raisebox{-0.3\height}{\includegraphics[alt='Location',height=1.4em]{home.png}} Edmonton, AB |
\raisebox{-0.3\height}{\includegraphics[alt='Phone',height=1.4em]{phone.png}} (780) 680-2697 |
\raisebox{-0.3\height}{\includegraphics[alt='Email',height=1.4em]{email.png}} \href{mailto:mail@john.me.tz}{mail@john.me.tz} |
\raisebox{-0.3\height}{\includegraphics[alt='Website',height=1.4em]{website.png}} \href{https://mer.tz}{mer.tz} |
\raisebox{-0.3\height}{\includegraphics[alt='GitHub',height=1.4em]{github.png}} \href{https://github.com/JohnMertz}{JohnMertz} |
\raisebox{-0.3\height}{\includegraphics[alt='LinkedIn',height=1.4em]{linkedin.png}} \href{https://linkedin.com/in/mertzjohn}{mertzjohn}
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% ==================== ABOUT ====================
\Section{Summary}
Senior Software Engineer and Linux System Administrator with 10+ years of experience building and maintaining security email systems.

% ==================== SKILLS ====================
\Section{Technical Skills}

\textbf{Administration:} Debian, RHEL, and FreeBSD systems, Networking, LDAP, SQL, DNS, Email, Clusters.\\
\textbf{Development:} Proficient in Perl, Bash, Python, PHP, HTML5, Git, Containers, VMs, CI/CD, DevOps.\\
\textbf{Other Interests:} Encryption and Cryptographic Signing, Immutable Systems, Web Development, VoIP.

% ==================== EXPERIENCE ====================
\Section{Work Experience}

\textbf{Development and Support Contracting} \hfill \textit{Freelance}\\
\textit{April 2025 -- Present} \hfill \textit{Edmonton, AB}
\begin{itemize}
\item Providing ongoing support for MailCleaner customers  while developing a
  \href{https://spamtagger.org/#spamtagger}{new iteration} of the product.
\item Implementing cutting-edge technology including immutable image-based VMs
  CI/CD pipelines, process isolation, microservices, and industry-leading
  encryption standards.
\end{itemize}

\vspace{3pt}

\textbf{Head of Development, MailCleaner} \hfill \textit{Alinto}\\
\textit{September 2022 -- April 2025} \hfill \textit{Lyon, France (Remote)}
\begin{itemize}
\item Led development of a \href{https://github.com/MailCleaner/MailCleaner-Next/graphs/contributors}{next-generation}
  security gateway, with updated architecture and modernized core systems.
\item Continued responsibilities from Fastnet AG role following the company's
  successful acquisition, while overseeing a consolidated team and taking on additional
  internal administration duties.
\end{itemize}

\vspace{3pt}

\textbf{Senior Developer} then \textbf{Head of Development} \hfill \textit{Fastnet AG}\\
\textit{September 2018 -- September 2022} \hfill \textit{St-Sulpice, Switzerland (Remote)} 
\begin{itemize}
\item Led development of the
  \href{https://github.com/MailCleaner/MailCleaner8/graphs/contributors}{MailCleaner}
  email security gateway product with tens of thousands of deployments globally. Took over as Head of Development in 2021.
\item Administered our cloud platfrom, dozens of internal servers, VMs and containers, as well providing proactive and on-demand maintanence of hundreds of client clusters.
\item Provided Level 2 and 3 support for enterprise customers, including live-patching OSes and application code.
\end{itemize}

\vspace{3pt}

\textbf{Software and Sales Engineer} \hfill \textit{Roaring Penguin Software} then \textit{AppRiver}\\
\textit{June 2015 -- September 2018} \hfill \textit{Ottawa, ON} 
\begin{itemize}
\item Started in a support role but quickly advanced to system administration
  and light software development duties using PHP, PostgreSQL, and Sendmail in
  a Debian appliance environment.
\item Supported the onboarding of dozens of partners and thousands of
  individual domains.
\item Presented technical demos in one-on-one and conference environments.
\end{itemize}

% ==================== EDUCATION ====================
\Section{Education}

\textbf{University of Windsor} \hfill \textit{2010 -- 2013}\\
Honours B.A. Psychology, Minor in Applied Information Technology

% ==================== PROJECTS ====================
\Section{Additional Work}
\begin{itemize}
\item \href{https://spamtagger.org}{SpamTagger}: Open source email security gateway (spamtagger.org).
\item Active contributor on \href{https://github.com/JohnMertz}{GitHub}, CPAN, Exercism, and others.
\item Operate and maintain dozens of production services across cloud and personal infrastructure environments.
\end{itemize}

% ==================== FOOTER ====================
\vfill
References available upon request \hfill \href{https://gist.github.com/JohnMertz/e8c8292e5dee3bc92ca2df027a422ac7}{Source} (gist.github.com/JohnMertz/e8c8292e5dee3bc92ca2df027a422ac7)

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