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Beamlak Sintayehu β€” Cybersecurity Β· Offensive Security Β· Applied AI. Building secure systems, and studying how they break.

Portfolio Download CV LinkedIn Email GitHub

Offensive security, threat modeling, autonomous AI, secure engineering

Location Open to work Authorized testing only

Β AboutΒ Β  Β What I doΒ Β  Β SkillsΒ Β  Β ToolboxΒ Β  Β CertificationsΒ Β  Β StatsΒ Β  Β ConnectΒ 


About

I'm a cybersecurity-focused technologist who enjoys building secure systems and learning how modern attacks work so I can defend against them. My work sits where offensive security, threat modeling and applied AI meet β€” from automated reconnaissance tooling to real-time computer vision and autonomous agent runtimes.

Three things shape how I work:

  • Security mindset β€” threat modeling, least privilege, secure defaults and continuous hardening.
  • Curiosity by default β€” CTFs, labs, reversing and practical experimentation over theory alone.
  • Builder's discipline β€” automation scripts, tooling and web applications that people can actually use.

🎯 What I do

The full set of disciplines I work across β€” not everything at the same depth, but all of it hands-on.

Discipline What that means in practice
πŸ”΄ Penetration testing Scoped internal and external assessments: recon, enumeration, exploitation, privilege escalation, reporting with reproduction steps
πŸ§ͺ Malware analysis Static and dynamic triage, unpacking, behavioural and IOC extraction, YARA/Sigma rule authoring, sandbox and isolate-and-observe workflows
πŸͺŸ Active Directory security AD enumeration and attack-path mapping, Kerberos abuse, ACL/AD CS misconfigurations, tier-0 hardening and detection engineering
πŸ•΅οΈ Threat intelligence & modeling STRIDE and attack-tree modeling, MITRE ATT&CK mapping, adversary profiling, indicator enrichment and prioritisation
🚨 Digital forensics & IR Memory and disk acquisition, timeline reconstruction, log and packet analysis, containment and post-incident hardening
🧷 Application security Secure code review, OWASP Top 10 and API Top 10 testing, authentication/authorisation design, dependency and supply-chain review
🌐 Web development React/TypeScript front ends, accessible design systems, performance budgets and SEO-sane markup
πŸ“± App development Flutter and Android builds, cross-platform mobile clients, offline-first state and API integration
βš™οΈ Backend & APIs Python and Node services, REST/GraphQL/tRPC design, queues, background workers and auth boundaries
πŸ—„οΈ Databases & data engineering Relational and document modelling, indexing and query tuning, ETL and telemetry pipelines
πŸ€– Machine learning Supervised training and evaluation, feature work, model comparison, and knowing when not to use ML
πŸ‘οΈ Computer vision Real-time stream ingestion, YOLO/OpenCV inference pipelines, tracking and anomaly eventing
🧠 AI agents & automation State machines, tool calling, memory, planning/reflection loops, sandboxed execution and bounded autonomy
✍️ Prompt engineering & LLM systems Prompt and context design, structured output, retrieval-augmented pipelines, evaluation harnesses and guardrails
🐧 Linux & systems Kernel namespaces, systemd, cgroups, shell automation, hardening and low-level debugging
☁️ DevOps & infrastructure Reproducible environments, CI/CD, containers, observability and least-privilege deployment
πŸ”Œ Hardware & IoT Raspberry Pi and Arduino experiments, firmware curiosity, sensor telemetry and physical-layer thinking
πŸ“ Research & writing CTF write-ups, lab documentation, technical notes, and turning findings into things other people can act on

πŸ› οΈ Skills

Every icon is a link β€” click any logo to open the official site, docs or download page.

πŸ’» Languages

Python JavaScript TypeScript C C++ C# Java PHP Go Rust Ruby Perl Lua Scala Elixir Solidity Bash HTML5 CSS3 SQL R MATLAB Objective-C

🌐 Frontend & Backend

React Next.js Svelte Vue Angular Nuxt Astro Remix jQuery Sass Tailwind CSS Bootstrap Material UI Vite Redux Three.js Node.js Bun Deno Express NestJS Flask Django Laravel FastAPI GraphQL Socket.IO tRPC htmx

πŸ—„οΈ Databases

PostgreSQL MySQL MariaDB MongoDB SQLite Redis Supabase Firebase Prisma ORM Elasticsearch SQLAlchemy Cassandra CouchDB SQL Server Oracle InfluxDB Memcached Neo4j DuckDB ClickHouse DynamoDB MongoDB Atlas

πŸ“Š Data Science & Machine Learning

PyTorch TensorFlow Keras scikit-learn NumPy Pandas Matplotlib OpenCV Jupyter Hugging Face Conda SciPy Seaborn Plotly Apache Spark XGBoost LightGBM CatBoost spaCy NLTK statsmodels Polars Dask Optuna

πŸ“± Mobile Development

Flutter Dart Kotlin Android Studio Jetpack Compose React Native Swift Ionic .NET MAUI Capacitor Xamarin Expo NativeScript Progressive Web App

πŸš€ DevOps, Platforms & Hardware

Linux Ubuntu Debian Docker Kubernetes Git GitHub GitHub Actions GitLab CI Jenkins Nginx Vercel Netlify AWS Azure Google Cloud Cloudflare DigitalOcean VS Code Vim CMake Raspberry Pi Arduino Terraform Ansible Grafana Prometheus Argo CD Helm Apache Kafka RabbitMQ HashiCorp Vault SonarQube

🧰 Toolbox

The security stack, malware-analysis bench and AI tooling I work with β€” all linked to their official sources.

πŸ›‘οΈ Security & Active Directory

Kali Linux OffSec BloodHound SharpHound Mimikatz Rubeus Certify Impacket NetExec CrackMapExec Certipy (AD CS) Kerbrute Responder Evil-WinRM PowerView bloodyAD Snaffler ldapsearch enum4linux-ng krbrelayx

🌐 Web & Network Exploitation

Burp Suite OWASP ZAP Nuclei Subfinder httpx Katana OWASP Amass ffuf Gobuster feroxbuster sqlmap Nikto WPScan Nmap Masscan theHarvester OneForAll Shodan Censys Wireshark tcpdump Ncat bettercap Aircrack-ng Hydra Hashcat John the Ripper Metasploit Red Team Notes MITRE ATT&CK OWASP Top 10

πŸ§ͺ Malware Analysis & Forensics

Volatility YARA Sigma rules capa FLOSS x64dbg dnSpy Ghidra Radare2 IDA Free PE-bear VirusTotal ANY.RUN MalwareBazaar REMnux FLARE VM Autopsy CyberChef

πŸ€– AI & Agent Tooling

PyTorch TensorFlow Keras scikit-learn OpenCV Ultralytics YOLO Hugging Face Transformers LangChain LangGraph LlamaIndex AutoGen CrewAI Model Context Protocol Ollama vLLM OpenAI Anthropic Claude Code Cursor FAISS Pinecone ChromaDB Qdrant Milvus Weaviate MLflow Weights & Biases DVC Streamlit Gradio ONNX Stable Diffusion ComfyUI n8n

πŸ’» Extra Languages & Shells

Assembly PowerShell Zsh fish Nushell Tcl Windows CMD / Batch YAML CMake Make awk / sed

πŸ“š Certifications & Hands-on Labs

πŸ”­ Focus: offensive security & pentesting Β· web application exploitation Β· threat modeling & defense

Credential Issuer Year Verify
AI for Everyone: Master the Basics (AI0101EN) IBM Β· edX 2026 Certificate
Claude Code 101 β€” completion badge Claude Academy Β· Anthropic 2026 Badge
Full certification list LinkedIn β€” View credentials

Hands-on practice

TryHackMe profile HackTheBox profile Lab status: active practitioner CTF focus: web, recon, crypto

Every assessment, lab and report is performed with explicit authorisation. No exceptions.

πŸ“Š GitHub stats

GitHub stats Most used languages

Contribution streak

Contribution calendar β€” the last year of commits

Profile summary

Repositories per language Most committed language Productive time of day

GitHub trophies

Followers Total stars Public repositories Profile views

All widgets are live. Counters (followers, stars, repos, views) re-cache at most once a day β€” cacheSeconds=86400 β€” so they stay current without ever going stale. If a card is ever blank, GitHub's image proxy is mid-refresh; it heals within minutes.

🌐 Connect

LinkedIn GitHub GitLab Primary email Secondary email Discord handle: mr.nobody.137

πŸ’¬ Open to collaborations, security research and interesting problems. The fastest way to reach me is email β€” or open an issue on any repository.


Visit the portfolio

Built with React, TypeScript and a healthy distrust of defaults. Β· Back to top

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