Matis Granger
@matisgranger
Software engineer specializing in complex systems and software security, building and auditing secure, high-performance platforms.
What I'm looking for
I’m a software engineer specializing in complex systems and software security. I create, maintain, and audit code for companies, driven by the itch to understand how everything works. After Centrale Nantes, I built a foundation through internships and then joined ServiceNow’s Platform Security team.
Over nearly 5 years at ServiceNow, I helped deliver a robust cryptographic infrastructure with the most stringent security requirements. As technical lead for a team of 10 engineers, I led stabilization across multiple products and independently audited and reverse-engineered systems to drive resolution. I also co-designed a high-throughput cryptographic gateway for sensitive data at scale and modernized ServiceNow’s FIPS-compliant architecture.
I introduced native Elliptic Curve Cryptography (ECC) by porting and extending cryptographic logic to production, and I drove PKI-based platform capabilities that unlocked downstream use cases for real-time integrations. Named inventor on US Patent 12425195 (client-side sharing of cryptographic keys), I now co-founded Devyos to help others build secure software without cutting corners or compromising on security or quality.
Experience
Work history, roles, and key accomplishments
Co-Founder
Devyos
Jan 2026 - Present (5 months)
Co-founded Devyos, a software engineering agency focused on building secure software without compromising security or quality. Leads secure engineering efforts using a TypeScript-first approach.
Software Engineer Intern
ServiceNow
Jun 2020 - Oct 2020 (4 months)
Contributed to ServiceNow Platform Security work supporting client-side sharing of cryptographic keys and robust cryptographic infrastructure. Developed in a security-focused environment with stringent requirements.
Software Engineer Intern
Ihmtek
Apr 2019 - Aug 2019 (4 months)
Built a VR arcade management application from scratch and delivered it ready for testing. Reduced mail theft issues on the domain to 0 and improved web platform stability within a few days.
Summer Intern (Eiffage)
Eiffage
Jul 2018 - Aug 2018 (1 month)
Completed road drawings in a cooperative setting, catching up with project deadlines. Demonstrated the ability to adapt quickly to areas with no prior experience.
Education
Degrees, certifications, and relevant coursework
Centrale Nantes
Engineer’s degree, Engineering
2017 - 2020
Earned an Engineer’s degree at Centrale Nantes from 2017 to 2020.
Lycée Chaptal (CPGE TSI)
CPGE (TSI), Technological Sciences and Industrial Engineering (TSI)
2015 - 2017
Completed CPGE studies in the TSI track from 2015 to 2017.
Lycée Jean Guéhenno
Baccalauréat STI2D (Spécialité SIN), Digital Systems Engineering (SIN)
2013 - 2015
Completed the Baccalauréat STI2D with a specialization in SIN from 2013 to 2015.
Availability
Location
Authorized to work in
Website
devyos.comJob categories
Skills
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