Marius-Florin Cristian
Europe – Remote
-
-keibisoft.com
Summary
Experienced cybersecurity architect and software engineer with 6+ years in secure infrastructure, ISO 27001, and postquantum cryptography. Operates B2B through Keibisoft for high-impact remote engagements. Proven track record in
startup exits, security certifications, and deep tech delivery.
Achievements
• ISO 27001 cert achieved at 2 startups in under 4 months (full ISMS implementation)
• Associate of ISC2 (Passed CISSP Exam, 6+ years domain experience)
• Security/infrastructure lead contributing to 2 acquisitions (Omnio → IBM, Krizo → Dataminr)
• Architected post-quantum encryption with Kyber, RSA, HQC + Argon2 KDF
• Built secure multi-platform systems (FUSE, Golang, gRPC)
• Migrated live production infra from Docker Swarm to GCP Kubernetes
Experience
Founder – KeibiSoft
• Delivered secure, post-quantum encrypted email, drive, and calendar systems
Feb 2023 – Present
• Built encrypted object sharing and S/MIME variant using Kyber, RSA, HQC
• Integrated FUSE-based vaults on Linux, macOS, Windows, iOS, Android
• Backend in Golang using gRPC, Echo; built mobile bindings for React Native
Sr. Security Engineer – IBM
• Integrated Omnio product into IBM Maximo Application Suite
Nov 2022 – Jan 2023
• Applied secure coding practices, ran static analysis and mitigated pen test findings
CISO / Software Engineer – Omnio (Acquired by IBM)
• Built ISO 27001 ISMS, led audits, GDPR and NIST RMF alignment
Sep 2020 – Oct 2022
• Developed security components in Rust and Python; implemented MFA, MTConnect
• Led incident response, static analysis (SonarQube), and CI/CD automation
• Maintained Azure Kubernetes infra; supported enterprise integrations (IBM, ABB)
Software Engineer / Acting CISO – Krizo (Acquired by Dataminr)
• Migrated infrastructure to GCP Kubernetes; stabilized product for enterprise clients
Jan 2019 – Aug 2020
• Developed backend in Haskell and frontend in Angular; enforced OWASP practices
• Built ISO 27001 ISMS from scratch; passed security audits; enabled B2B sales
• Interfaced with investors/clients to secure funding and unblock revenue
Education
MSc Computer Science, University of Copenhagen (DIKU)
BSc Computer Science, Alexandru Ioan Cuza University, Iasi
Certifications
Associate of ISC2 (CISSP Exam Passed) – Feb 2022
ISO 27001:2013 Implementation and Audit (hands-on)
Technical Stack
Languages: Go, Rust, Python, Haskell, C++, Bash
Infra: Kubernetes, Docker, GitOps (ArgoCD), Terraform, CI/CD (GitHub Actions)
Security: ISO 27001, GDPR, NIST 800-53, SSDLC, OWASP ASVS
Specialized: Post-Quantum Crypto, FUSE, gRPC, MTConnect
2016 - – 2016
