Abdullah Alsigar

Software Engineer | Blockchain Security

📧 abdullah.alsigar@gmail.com | 🔗 GitHub | 🐦 @agent3bood | 📍 Turkey

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Professional Summary

Software engineer with 6+ years of full-stack development experience and 10 years in aviation safety-critical systems, transitioning into blockchain security research. Combining zero-defect aviation mindset with strong technical foundation of software engineering to build and secure smart contracts and protocols.

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Technical Foundation

Development Skills

• Languages: JavaScript, TypeScript, Dart, Solidity
  • Rust, Go, Kotlin (intermediate)
• Frameworks: Flutter, React Native, React, Node.js, GraphQL
• Infrastructure: Serverless, Docker, CI/CD, Git
• Platforms: iOS, Android, web, Server, relational and non relational databases

Blockchain & Security

• Smart Contracts: Solidity development and testing with Foundry
• Security Tools: Slither static analysis, Fuzzing techniques, Formal verification
• Platforms: Ethereum/EVM, cross-chain protocols
• Analysis: Data flow analysis, logic flow analysis, access control patterns

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Professional Experience

Senior Software Engineer (Mobile/Full-Stack)

Various Companies | August 2018 - Present | Remote

• Led full-stack development of production applications using modern tech stacks including React, React Native, Flutter, and Node.js, delivering scalable solutions for web and mobile platforms over 6+ years
• Specialized in cross-platform development with Flutter, building and maintaining responsive web and mobile applications from a single codebase, reducing development time while ensuring near native performance
• Delivered end-to-end solutions across the entire development lifecycle, from database design and API development to responsive UI implementation, working with distributed teams to ship features on aggressive timelines

Aircraft Maintenance Technician (Avionics)

Emirates Airlines | October 2007 - August 2018 | UAE

• Maintained critical aviation systems requiring absolute reliability and safety standards
• Developed and executed systematic testing procedures for software and hardware updates
• Collaborated with engineering teams on safety-critical system modifications and improvements
• Ensured compliance with international aviation safety standards and regulations

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Blockchain Security Journey

Current Learning Path (November 2024 - Present)

• Advanced Solidity Bootcamp - RareSkills (Completed 2024)
• Competitive Auditing: Active participant on Code4rena, Cantina, and Cyfrin CodeHawks platforms
• Self-Directed Study: Smart contract vulnerability research through CTFs and documented case studies
• Formal Verification: Learning and applying formal verification techniques and methodologies to ensure smart contract correctness and security

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Education & Certifications

• Advanced Solidity Bootcamp - RareSkills (2024)
• Bachelor of Engineering: Electronics Systems Engineering - University of Portsmouth, UK (2020)
• Higher National Diploma: Electronics Engineering - Emirates Aviation University, UAE (2007)

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Unique Value Proposition

🛡️ Safety-First Approach: Applying 10 years of aviation zero-defect methodology to smart contract security analysis

🔍 Systems Decomposition Expertise: Natural ability to reverse-engineer complex systems through methodical analysis—starting with high-level architecture diagrams, identifying all actors and use cases, deep-diving into each component, then synthesizing insights to understand emergent system behaviors and vulnerabilities

🏗️ Full-Stack Security Perspective: Leveraging comprehensive understanding across all layers from frontend to blockchain to identify cross-layer vulnerabilities and systemic risks

📚 Continuous Learning Mindset: Driven by innate curiosity to understand how things work at a fundamental level, committed to formal education and active participation in blockchain security research communities

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Target Opportunities

Seeking remote entry-level to junior positions in:

• Smart contract security research and auditing
• Protocol security engineering roles
• Security-focused blockchain development
• Junior positions at security auditing firms
• Bug bounty and vulnerability research programs

Available for full-time roles, security consulting projects, and collaborative research opportunities.

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Audits & Findings

https://code4rena.com/@agent3bood https://profiles.cyfrin.io/u/agent3bood https://cantina.xyz/u/agent3bood

| Platform | Project | Description | Date | Findings | Results | | --------- | ---------------- | ------------------------------------------------- | ------------- | --------- | -------------- | | CodeHawks | Fjord | Staking | Aug 27th 2024 | 1M | 89/129 | | CodeHawks | ArkProject | NFT | L2 bridge | Aug 28th 2024 | 1M | 24/81 | | Code4rena | Chakra | Bitcoin settlement | Bridge | Solidity | Cairo | Sep 11th 2024 | 3H | 1M | 32/102 | | CodeHawks | ZKsync Era | L2 | ZK | L2 bridge | Dec 2nd 2024 | 2M | 14/33 | $8.5k | | Code4rena | Chainlink | Payment abstraction | Jan 3rd 2025 | private | | | CodeHawks | RAAC | RWA NFT | Feb 24th 2025 | 3H | 4M | 356/462 | | Cantina | Reserve Protocol | DTF | Rust | Solana | Mar 3rh 2025 | 1H | 8/328 | | Code4rena | Forte | Float128 library | Apr 1st 2025 | 2H | 8/59 | | Cantina | Aquarius | AMM | Rust | Formal verification | May 7th 2025 | 1L | 1I | 34/680 |