Position: Solidity smart contracts auditor
Company: OnHires
Category: Security
Experience required: 3y
English level: fluent

**About Hacken:**
Hacken Ecosystem is a cybersecurity company comprising 4 products: — HackenProof — a bug bounty and vulnerability rewarding platform (clients: VeChain, TTC Protocol, and other). —Hacken Hub — the hub of security consulting services that specialize in blockchain and fintech products (clients: PumaPay, Nucleus Vision, Ambit Mining, and other).

We are a leading security consulting company with an essential focus on blockchain security and a community of like-minded people who are passionate about a common goal. Our mission is to make web 3.0 a safer place. We are a fast developing company in an innovative sphere. As the cyber market is growing rapidly, we have a strong intention to take its significant share during the next 3 years. Strong tech department will play a crucial part in it.

**We expect you to have:**
- Strong knowledge of Solidity;
- Good understanding of the Ethereum blockchain and dapp architecture;
- Understanding of different deFi protocols;
- Knowledge of ERC20, ERC721, ERC1155 standards;
- Experience with unit testing, documentation, design reviews, and code review;
- Strong analytical and problem solving skills.

**What you’ll do:**
- Review the code (primarily solidity contracts) of blockchain projects;
- Analyze business logic;
- Identify vulnerabilities, design and architectural flaws;
- Improve quality in order to avoid potential risks;
- Provide contracts unit testing;
- Write clear and concise reports and action-steps for developers;
- Interact with developers and key stakeholders when identifying and handling security issues.

**Will be a plus:**
- Рrevious experience working with DeFi projects;
- Experience of building web services using Java;
- Experience in writing automation tests;
- Being passionate about crypto space.

**We offer:**
- Personal and professional development as a specialist;
- Development of innovative, future-oriented blockchain products;
- Flexible working hours;
- Office/remote work;
- Medical insurance, paid vacation and sick leaves;
- Budget for conferences, seminars and training that will help you grow as a professional, English classes.