Franciny S Roj
@francinysroj
Applied cryptographer and cybersecurity specialist focused on secure systems.
What I'm looking for
I am an applied cryptographer and cybersecurity specialist with extensive experience designing, implementing, and auditing secure systems for government, finance, healthcare, and blockchain environments. I lead cryptographic architecture, FIPS-compliant solutions, penetration testing, secure software development, and evidence-driven compliance for high-assurance deployments.
I have delivered end-to-end secure ingestion pipelines, quantum-safe research platforms, privacy-preserving decentralized identity systems, and led security teams across cloud, AppSec, malware analysis, and red-team operations. I combine hands-on engineering (Python, Rust, Qiskit), formal methods, and practical adversarial testing to reduce risk and enable secure product delivery.
Experience
Work history, roles, and key accomplishments
Senior AppSec Specialist
ACT / Bradesco Bank / Alelo
Delivered AppSec and secure cloud migration services for large financial clients, performing malware reverse engineering, threat modeling, secure SDLC improvements, and incident response for high-assurance environments.
Security Researcher
Freelance / Bug Bounty
Participated in public and private bug bounty programs, discovering vulnerabilities in web and mobile targets and contributing to disclosures and Hall of Fame recognitions across platforms.
Cybersecurity Manager
April Blaze
Owned corporate security posture for an online gaming platform, leading offensive and defensive programs, SOC operations, cloud security, and compliance (PCI-DSS, ISO, GDPR) while integrating blockchain-focused pentesting into CI/CD.
Pentester
Kryptus
Performed cryptographic security testing and secure development for high-assurance systems, evaluating HSMs, conducting side-channel and fault-injection assessments, and validating compliance with FIPS and Common Criteria.
Pentest Tech Lead
Conviso
Led penetration testing and vulnerability management engagements, integrating SAST/DAST with manual testing and cryptographic assessments to improve secure SDLC and deliver high-impact security findings.
AppSec Specialist
Witzler
Established secure development practices and AppSec tooling, implemented SAST/DAST, manual code review and CI/CD test automation, and performed forensic analysis of account compromises.
Cryptography Architect
Æthux
Led design and implementation of a FIPS-compliant ingestion and data-integrity pipeline for Atlas, delivering signed audit evidence, HSM-backed key operations, and tamper-evident transfer workflows to support external audits.
Solana Rust ZK Architect
Sbarter
Architected and implemented a privacy-preserving decentralized identity (SSI) system on Solana using ZK-SNARKs and optimized Rust programs, delivering selective disclosure, recursive proofs, and WC DID interoperability.
Quantum Crypto Researcher
WenhuiFeng
Led development of a QKD attack simulation, detection and defense platform integrating Qiskit/QuNetSim and ML/GNN models to detect attacks and optimize secure routing in multi-party quantum networks.
Education
Degrees, certifications, and relevant coursework
Centro Universitário Internacional (UNINTER)
Bachelor degree, Data Science
Completed a Bachelor degree in Data Science covering statistical analysis, machine learning, and data engineering concepts.
Faculdade de Ciências Sociais Aplicadas (FACOL)
Bachelor degree, Public and Private Security Management
Completed a Bachelor degree in Public and Private Security Management with coursework focused on security policy, risk management, and organizational security practices.
Unyleya
MBA, Information Security and Data Privacy
Postgraduate MBA in Information Security and Data Privacy covering governance, compliance, and technical controls for protecting data assets.
Unyleya
Postgraduate Degree, Criminology
Postgraduate degree in Criminology focused on criminal behavior analysis and investigative methodologies.
Faculdade de Minas
MBA, Information Management
Postgraduate MBA in Information Management emphasizing information governance, IT strategy, and data lifecycle management.
Faculdade de Minas
Postgraduate Degree, Forensic Science and Criminal Forensic Expertise
Postgraduate degree in Forensic Science and Criminal Forensic Expertise covering forensic methodologies, evidence analysis, and legal procedures.
Tech stack
Software and tools used professionally
Splunk
Blockchain
Ethereum
IPFS
Bugcrowd
HackerOne
GitHub
GitLab
SonarQube
Kubernetes
kube-bench
GitHub Actions
GitLab CI
Dex
React Native
PostgreSQL
Dependabot
Gmail
Django
Spring Boot
ZK
JavaScript
Java
PHP
JSON
Objective-C
WebAssembly
F#
Linux
iOS
macOS
Windows
Kali Linux
ZAP
Falco
Quora
OpenSSL
CrowdStrike
ClamAV
Zap
Snyk
Burp Suite
Nmap
Metasploit
Hardhat
Qiskit
Harness
Score
Evidence
Solana
Resend
Availability
Location
Authorized to work in
Job categories
Skills
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