Audit Solidity smart contracts and blockchain projects for vulnerabilities, architectural flaws, and security risks. Produce actionable reports, collaborate with developers and stakeholders on remediation, and mentor engineers on security best practices. The role requires expertise in Solidity, EVM, blockchain development, testing, Hardhat or Geth, fuzzing, and formal verification, with opportunities to work on DeFi protocols and high-value assets.
Hexens.io is looking for a Senior Security Researcher to join their team. Hexens.io is a company that provides state-of-the-art cybersecurity services with an essential focus on blockchain. The company solves sophisticated issues for customers with codes containing multimillion assets.
Remote Availability: CIS, Europe, United Arab Emirates
Job responsibilities:
- Review smart contracts and analyze security measures
- Audit smart contracts following the highest security industry standards
- Mentor and educate engineers internally on the security best practices
- You are security-minded and aware of the pitfalls of EVM code and vulnerable flows
- Review code (primarily solidity smart contracts) of blockchain projects
- Work to identify vulnerabilities, design and architectural flaws, quality improvement, and ways to mitigate future risk
- Deliver clear and concise reports and “action-items” for developers to quickly mitigate and fix any issues discovered
- Interact with developers and key stakeholders when identifying and handling security issues
- Other related responsibilities
Required qualifications:
- At least 3 years of work experience in cybersecurity and 1 year in smart contract audits
- Experience with JavaScript/TypeScript
- Demonstrated expertise with Solidity, EVM and blockchain specifics
- Experience assessing smart contract security risks
- Experience with unit and integration testing
- Experience with hardhat and geth or other development frameworks and local environments
- Fuzzing and formal verification
- Experience developing and building on DeFi protocols and smart contracts is a big plus
- Proactive problem solver
Benefits:
- Possibility to work alongside industry-leading specialists
- Opportunity to work with the most exciting and prominent companies in the industry
- Highly competitive salary
- Workations
Similar Jobs
Software • Quantum Computing • Metaverse • Infrastructure as a Service (IaaS)
Research and analyze threat intelligence, attacker tactics, vulnerabilities, and forensic evidence. Conduct threat hunts and investigations, develop detection logic and security recommendations, create customer and internal briefings, produce threat content, and improve Microsoft security tooling and investigative practices. The role supports global efforts to identify adversary activity, catalog TTPs, and protect enterprise customers.
Top Skills:
Azure DevopsContinuous DeliveryContinuous IntegrationGitHumioJupyter NotebooksKibanaKusto Query Language (Kql)LinuxmacOSAzureMicrosoft Security ProductsScripting LanguagesSplunkSQLWindows
Artificial Intelligence • Cloud • Machine Learning • Security • Software • Cybersecurity • Big Data Analytics
Conduct offensive security research focused on software supply chain threats, zero-day vulnerabilities, malicious code, third-party libraries, and CI/CD systems. Develop exploit techniques, collaborate on detection and mitigation capabilities, publish research through blogs and security conferences, and contribute open-source tools and methodologies. The role requires deep expertise in vulnerability research, reverse engineering, application security, exploit development, and software supply chain security.
Top Skills:
Ci/CdDependency AnalysisExploit DevelopmentGoPackage Management SystemsPythonReverse EngineeringRustSoftware Supply Chain Security
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Analyze in-the-wild exploits and perform deep reverse engineering to track adversaries. Build detection, automation, and classification frameworks; develop host/network signatures and tooling. Produce high-quality intelligence reports and briefings, collaborate across teams, and contribute to mitigation and large-scale hunting efforts.
Top Skills:
Ai-Assisted ToolsDebuggersDecompilersDisassemblersDynamic Analysis FrameworksLinuxLlmsWindowsPythonSnortStatic Analysis FrameworksYara
What you need to know about the Seattle Tech Scene
Home to tech titans like Microsoft and Amazon, Seattle punches far above its weight in innovation. But its surrounding mountains, sprinkled with world-famous hiking trails and climbing routes, make the city a destination for outdoorsy types as well. Established as a logging town before shifting to shipbuilding and logistics, the Emerald City is now known for its contributions to aerospace, software, biotech and cloud computing. And its status as a thriving tech ecosystem is attracting out-of-town companies looking to establish new tech and engineering hubs.
Key Facts About Seattle Tech
- Number of Tech Workers: 287,000; 13% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Amazon, Microsoft, Meta, Google
- Key Industries: Artificial intelligence, cloud computing, software, biotechnology, game development
- Funding Landscape: $3.1 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Madrona, Fuse, Tola, Maveron
- Research Centers and Universities: University of Washington, Seattle University, Seattle Pacific University, Allen Institute for Brain Science, Bill & Melinda Gates Foundation, Seattle Children’s Research Institute



