Elias
Frehner
Started as a precision mechanic obsessed with tolerances measured in microns. That mindset carried into a career focused on cyber security, infrastructure, and engineering at scale. Professionally, I work across secure networks, systems engineering, and security operations in ciritical infrastructure. Alongside that, I build software with a strong focus on clean architecture and user experience. My development experience spans full-stack applications, security tooling, and low-level analysis. Currently studying Computer Science, contributing to open source, and diving deep into reverse engineering across different architectures and platforms.
Code that ships.
KeyBridge
A client–server platform to securely access applications in untrusted environments.
Plexer
A lightweight web app for retrieving original media files from Plex shares, even when direct downloads are restricted.
Flytics
A social platform and analytics hub for pilots to share flights, track statistics, and connect with peers.
KNOWLI
Your notes. Instant flashcards.
LEVA
All 8 areas of your life. One app.
SOSIFY
Your silent guardian in every moment.
CONSPIRACY
The social deduction game you play in real life.
BILLO
Swiss invoices, done right.
LOKADO
Know where everything is.
VOCABOLY
Vocabulary that sticks.
Building in the real world.
KWO (Kraftwerke Oberhasli), Switzerland
3 positions
Cyber Security Specialist
Mar 2024 - Present · 2 yrs 3 moResponsible for securing operational technology (OT) and IT networks, performing vulnerability assessments, and implementing security measures in the energy production environment. Also leading security-related projects
Junior Cyber Security Specialist
Jan 2023 - Feb 2024 · 1 yr 2 moTook over a permanent role after the internship and supporting OT/IT security operations, hardening systems, and contributing to vulnerability management across the energy production environment.
Cyber Security Intern
Aug 2022 - Dec 2022 · 5 moStarted as an intern in the Cyber Security team learning the operational technology landscape, supporting security assessments, and assisting with day-to-day defensive work.
*Redacted organization
*Redacted
I completed an advanced cyber training program in a redacted environment, focused on threat modeling, adversary analysis, penetration testing, and digital forensics. The curriculum emphasized incident response, risk assessment, and the application of offensive and defensive techniques in high-assurance, mission-critical systems.
fmi Spitäler AG, Switzerland
Service Desk
First point of contact for hospital staff IT issues. Ttroubleshooting workstations, accounts, peripherals, and clinical software. Triaged and escalated incidents while keeping day-to-day operations running. Also did some development work on internal tools and automation to improve efficiency in the service desk.
Logistikbasis der Armee (LBA), Switzerland
Polymechanic (EFZ)
Worked as a skilled polymechanic, performing precision mechanical work, assembly, and maintenance of technical systems in an industrial environment.
The full stack of expertise.
Honestly, I'm not a fan of rating skills with percentages. A bar chart can't really capture what you can build with someone, and the number says more about confidence than competence.
A better signal? Take a look at the projects or Benavo — and even better, let's talk. Not all of my work is open source, so a conversation says more than any chart.
That said — if you came here for the chart, it's yours.
Always learning.
Bachelor of Science in Cyber Security
2025 - 2029FFHS (Switzerland)
Advanced Federal Diploma of Higher Education in Computer Science, specialization in Software Development
2022 - 2025gibb Bern (Switzerland)
Federal Diploma of Vocational Education and Training (VET) in Polymechanics
2017 - 2021BZI (Switzerland)
Lower Secondary School (Sekundarstufe)
2014 - 2017Oberstufenzentrum Oberhasli (Switzerland)
Primary School
2008 - 2014Schule Hausen (Switzerland)
Verified expertise.
Tenable OT Security
Indegy Tenable
Microsoft 365 Certified: Fundamentals
Microsoft