Security Engineer Jobs in 2026
Security engineer, penetration tester, AppSec, and DevSecOps roles. Protect systems and data at leading companies.
Senior/Staff DeFi Engineer
Who We Are:
Ethena Labs is at the forefront of the next wave of DeFi, dedicated to building products for modern finance. Ethena is a synthetic dollar protocol built on Ethereum that provides a crypto-native solution for money, USDe, alongside a globally accessible dollar savings asset, sUSDe.
Ou...
Chief Blockchain Architect
About Us
We're a digital entertainment company creating engaging online platforms people love. Since 2021, we've been building something different. Our brands include MetaWin, WOW Vegas, BetZoo Media, and Rolla with more to come.
Arena prioritises the use of innovative technology, decentralised...
Senior Fullstack Engineer
Biconomy empowers Web3 developers to build seamless, user-friendly dApps that work effortlessly across multiple blockchains. Our battle-tested modular account and execution stack eliminates traditional UX friction points, helping projects accelerate user adoption while reducing development costs. By...
People & Culture Manager
About us
Behind every groundbreaking project, there is a team like ours that makes it possible. At Onchain Ventures, we work with some of the most exciting projects in Web3 — including Lisk, Pass App, and Onchain — providing the legal, financial, and operational support they need to thrive. While...
VP of Product
About Quranium
In a world where rapid innovation demands uncompromising security, Quranium stands as the uncrackable foundation of the digital future. With its quantum-secure, AI-native Layer 1 blockchain, Quranium ensures resilience against todays threats and tomorrows quantum era.
Quranium is...
Blockchain Engineer
We are looking for a skilled Blockchain Developer with hands-on experience in EVM and Solidity smart contract development to join our engineering team. The ideal candidate should be capable of independently designing, auditing, and deploying smart contracts on Ethereum-compatible chains. Familiarity...
Head of Trading
Role Overview
As our lead trader, you will:
- Execute and manage spot and futures trades across major crypto exchanges.
- Develop and refine trading strategies to maximize risk-adjusted returns.
- Monitor markets 24/7 with a disciplined approach to risk management.
- Generate daily/weekly repor...
Compliance Officer
CoinJar is looking to hire a Compliance Officer to join their team. This is a full-time position that is based in Melbourne.
CoinJar - Established in 2013, CoinJar is the easiest way to buy, sell, store, send and spend Bitcoin and other cryptocurrencies.
Principal AI Delivery Lead (Agent Systems) — Build–Operate–Transfer
Are you the one?
Own the orchestration of AI agent projects from discovery to a clean handover. You set direction, align stakeholders, and ensure reliability, while specialists (LLM/ML, data, backend, security) own deep implementation. Success is shipping the right MVP fast, then transferring a...
Senior Software Engineer (Backend → AI Applications)
Are you the one?
Own and ship backend systems that power AI features. You'll take ambiguous product goals, design reliable services, integrate LLM/ML components, and deliver production outcomes with minimal supervision. You already have a strong backend track record and have demonstrably upskille...