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Senior Information Security Engineer- Application Security Focus

Newham, East London🌐 Remote💼 Full-time🗓 2026-05-08 → 2026-08-07

Core

Deliver advanced application security assessments for blockchain and web3 applications, focusing on the junction between off-chain and on-chain systems.

Role type

Senior Information Security Engineer (Application Security)

Builds

Security assessments for API services, front-ends, wallet software, browser plugins, mobile apps, and SDKs

Domain

Blockchain / Web3 / Cybersecurity

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Offensive security services, Web application security, API security, Mobile app security (Android/iOS), Browser extension security, Desktop application security, Vulnerability identification in Golang/Rust/TS/JS/Python/Java/C, Cloud security, CI/CD security, Container security, CDN security, Network security, Web3 security concepts, Scripting and automation

Preferred skills

Bug bounty history, Smart contract auditing, DeFi protocol development, Web3 service integration

Technologies

Golang, Rust, TypeScript, JavaScript, Python, Java, C, Android, iOS, Burp Suite

Responsibilities

Plan and deliver application security assessments against APIs, front-ends, wallets, plugins, and SDKs; Identify technical vulnerabilities and architectural flaws in off-chain/on-chain junctions; Collaborate with smart contract auditors and cryptography researchers; Assist with scoping requirements for application security work

Seniority

Senior, hands-on IC

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