Caiz

Security Engineer- Smart Contract Auditor (Crypto / Blockchain)

Remote Smart Contract Auditor role with clear candidate location fit.

PostedJul 22, 2026

Eligible countries1 accepted country

Seniority signalMiddle

Work settingRemote

Accepted candidate locations

Germany

Role overview

Security Engineer- Smart Contract Auditor (Crypto / Blockchain)

Requirements and responsibilities

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Why to Join Caiz?

Innovative & Purpose-Driven: At Caiz, we combine advanced blockchain technology with the principles of Islamic finance to create an innovative and modern financial system. Join us to be part of a forward-thinking organization that is reshaping the future of finance.
Ethical Impact: As part of Caiz, you'll be working in an Organization that prioritizes ethics and integrity in all its operations, ensuring that every solution we offer aligns with the core values of fairness, transparency, and respect.
Growth & Learning Opportunities: At Caiz, we value personal and professional growth. You'll have the opportunity to learn, innovate, and grow within a dynamic, supportive environment, while contributing to the development of ethical financial solutions.
Global Vision, Local Impact: Caiz is focused on creating an inclusive, sustainable financial system that empowers individuals globally. You’ll be contributing to a company that has a positive impact on local communities and the global financial landscape.
Collaborative Culture: We believe in teamwork and collaboration. You'll work alongside passionate professionals who are committed to driving change in the crypto and blockchain space, working together to create an ethical financial future.
Secure & Transparent Environment: We emphasize trust and security in all aspects of our operations. As part of Caiz, you’ll be part of a transparent organization that values customer trust and ensures the highest security standards in the crypto space.crypto business developmen

Responsibilities:

Conduct comprehensive audits of smart contracts, blockchain protocols, and decentralized applications (dApps).
Identify, analyze, and remediate vulnerabilities in smart contracts, including reentrancy, overflow/underflow, logic errors, gas optimization issues, and governance risks.
Design and implement security best practices for smart contract development and deployment.
Collaborate with blockchain engineers to review architecture and propose secure design improvements.
Perform penetration testing and threat modeling specific to blockchain and DeFi environments.
Write detailed audit reports, including vulnerabilities, risk assessments, and recommendations.
Monitor deployed contracts and blockchain infrastructure for abnormal activities and potential exploits.
Stay updated on the latest blockchain security threats, vulnerabilities, and industry best practices.
Educate internal teams on security awareness, safe coding practices, and emerging risks.

Experience:

3–5 years of experience in blockchain security, smart contract auditing, or cybersecurity roles.
Strong understanding of Ethereum, Solidity, and EVM-based chains (experience with other chains like BSC, Polygon, Polkadot, or Layer-2s is a plus).
Hands-on experience auditing DeFi protocols, staking contracts, NFTs, or DAO governance contracts.
Proven experience with blockchain security tools (e.g., MythX, Slither, Echidna, Foundry, Tenderly, Hardhat, Truffle).
Knowledge of cryptographic principles (hashing, signatures, zero-knowledge proofs) and applied security.
Experience publishing or contributing to audit reports, whitepapers, or security advisories is a strong plus.Expert in Solidity, smart contract development, and debugging.
Strong analytical and problem-solving skills for identifying complex vulnerabilities.
Proficiency in penetration testing, fuzzing, and formal verification methods.
Ability to clearly document findings and communicate with both technical and non-technical stakeholders.
Familiarity with secure coding guidelines and blockchain threat landscapes.

Benefits at Caiz:

Competitive Financial Compensation: We offer financial benefits that reflect the value of your work and dedication.
Work Flexibility: Enjoy the flexibility to work from home, the office, or even abroad.
Annual Holidays: Generous paid time off to help you maintain a healthy work-life balance.
Relocation Assistance: We provide relocation support for employees moving to new locations.
Professional Development: Opportunities for training, certifications, and career growth.
Employee Recognition: Programs to celebrate and reward your achievements and contributions.
Inclusive & Collaborative Culture: A supportive and diverse work environment where your voice matters.
Diversity, Equality, and Inclusion: We are committed to fostering a workplace that values diversity and promotes equality and inclusion for all employees.

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