Senior Information Security Engineer- Application Security Focus

Hexens.io is looking for a Senior Information Security Engineer with a strong focus on application security to join our team. At Hexens.io, we deliver cutting-edge cybersecurity services with a core emphasis on blockchain technology. We address complex security challenges, protecting applications and infrastructures that handle multimillion-dollar digital assets. Remote Availability: Work from anywhere! This is a fully remote role with no location restrictions. Responsibilities: Alongside our off-chain security lead, plan and deliver advanced application security assessments against API services, application front-ends, wallet software, browser plugins, mobile apps, and SDKs. Collaborate with leading smart contract auditors and cryptography researchers, leveraging your application security expertise to assess attack surfaces outside their on-chain specializations. Work to identify technical vulnerabilities, architectural flaws, and ways to mitigate future risk in the crucial junctions between off-chain and on-chain systems. Interact with developers and key stakeholders when identifying and handling security issues. Deliver clear and concise reporting on issues and attack paths identified. Required skillset: At least 5 years experience, or equivalent technical expertise, delivering offensive security services, with a primary focus on application security. Expert-level web application and API security experience, with proficiency assessing apps with modern web frameworks, and identifying advanced client-side, back-end, and business logic attacks. Experience assessing mobile applications (Android/iOS), browser extensions, and desktop applications. Practical experience finding complex vulnerabilities and attack paths in Golang, Rust, TS/JS, Python, Java, or C-based codebases during white/grey-box appsec assessments. Working knowledge of cloud, CI/CD, container, CDN, and network security concepts, and how they apply to application security. Knowledge or willingness to learn web3 security concepts and how they apply to web3-centric applications. Decent scripting and automation skills. Assisting with scoping requirements for application security work. Strong client-facing and soft skills. Big plus if any of the following apply: Significant web2 bug bounty/vulnerability disclosure history. Prior experience as a smart contract auditor or onchain-focused security researcher. Prior experience developing or integrating DeFi protocols, smart contracts, wallet services, or other web3 services. Advanced relevant security certifications (OSWE, Burp Suite Certified Professional, etc.) Benefits: Work alongside industry-leading specialists Opportunity to work with the most exciting and prominent companies in the industry Highly competitive salary Great work environment