Blockchain Security Engineer - Reentrancy, overflow attacks

6 - 8 years

0 Lacs

Posted:1 day ago| Platform: Linkedin logo

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On-site

Job Type

Full Time

Job Description

CriticalRiver Inc.


Our expertise spans cloud, automation, and next-generation technologies such as AI/ML, IoT, RPA, and Industry 4.0. We serve a diverse range of industries, including

Energy & Utilities, High Tech, Financial Services, Manufacturing, and Not-for-Profit.


At CriticalRiver, we are committed to delivering innovative, end-to-end solutions that empower our clients to achieve sustainable business growth while fostering a culture of collaboration, innovation, and continuous learning.


Role Summary

Blockchain Security Engineer


Key Responsibilities

  • Conduct

    smart contract audits

    , focusing on vulnerabilities such as

    reentrancy, overflow/underflow attacks

    , and other common security flaws.
  • Ensure

    blockchain network security

    , including

    key management, consensus mechanisms, and on-chain privacy

    .
  • Evaluate

    dApp security

    and recommend mitigation strategies.
  • Apply

    OWASP Top 10

    guidelines and perform security testing using

    SAST/DAST tools

    .
  • Implement secure protocols including

    HTTPS, TLS, HSTS, and CSP

    .
  • Manage and audit

    Key Management Systems

    like Azure Key Vault and HashiCorp Vault.
  • Enforce

    Identity & Access Management (IAM)

    and

    Role-Based Access Control (RBAC)

    across blockchain applications.
  • Collaborate with developers and DevOps teams to integrate security best practices into development workflows.


Required Skills & Competencies

  • Strong experience in

    smart contract auditing

    and

    blockchain security

    .
  • Hands-on knowledge of

    key management, consensus tuning, and network security

    .
  • Familiarity with

    dApp architecture and on-chain privacy techniques

    .
  • Expertise in

    security testing tools (SAST/DAST)

    and secure coding practices.
  • Proficiency in

    HTTPS, TLS, HSTS, CSP

    , and other web security standards.
  • Experience with

    Azure Key Vault, HashiCorp Vault

    , or similar KMS solutions.
  • Knowledge of

    IAM and RBAC implementation

    .
  • Strong analytical, problem-solving, and communication skills.


Education & Experience

  • Bachelor’s in Computer Science, Cybersecurity, or a related field.
  • 6-8 years of experience

    in smart contract auditing, blockchain security, or related cybersecurity roles.
  • Relevant certifications (CEH, OSCP, blockchain security certifications) are a plus.


Preferred Experience

  • Exposure to

    DeFi protocols, decentralized applications (dApps)

    , and enterprise blockchain frameworks.
  • Understanding of

    DevSecOps practices for blockchain

    .
  • Experience with security compliance and regulatory standards for blockchain deployments.


Benefits & Work Environment

  • Opportunity to work on

    cutting-edge blockchain projects

    .
  • Exposure to both enterprise and government blockchain initiatives.
  • Collaborative and innovative work culture with

    professional growth opportunities

    .

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