Security Engineer

About the role

Security teams establish and maintain protection for decentralized applications and infrastructure related to Ethereum scaling solutions. Evidence-based methods guide how security operates within application and infrastructure domains. The role functions within a landscape where threats and rules evolve annually. You will own the security assessment of systems and stack components to identify risks in deployed blockchain infrastructure. A core part of this position involves interpreting findings and translating them into clear remediation guidance for both technical and non-technical stakeholders. You will address identified issues by applying that guidance through tools and platforms such as Arbitrum and Apechain. Evaluation of real-world risks on scaled blockchain infrastructure stems directly from your security evaluation of deployed systems. Success in this role requires calm judgment under pressure, balancing deep technical analysis with clear communication of risk to diverse audiences.

Key facts

What you'll do

Security assessment of systems and stack components identifies risks in deployed blockchain infrastructure. Findings are interpreted and translated into remediation guidance for both technical and non-technical stakeholders. Teams address identified issues by applying guidance through tools such as Arbitrum and Apechain. Evaluation of real-world risks on scaled blockchain infrastructure stems from security evaluation of deployed systems. You will conduct hands-on analysis of smart contracts and protocol-level components to uncover potential vulnerabilities. The role requires you to perform threat modeling for new features and infrastructure changes before they reach production. You will review architectural designs to ensure they align with security best practices for Ethereum scaling ecosystems. You will create and maintain security playbooks and testing procedures tailored to decentralized infrastructure. Monitoring for emerging vulnerabilities in dependencies like Layer 2 protocols is a standard part of the ongoing work. You will collaborate with engineering teams to verify fixes and validate the security of patched systems.

Requirements

The posting states a bachelor's degree requirement; Blockchain or smart contract security experience on scaled infrastructure demonstrates readiness to assess real-world risks. Security assessment tools and methodologies for distributed systems must be used to evaluate stack components and their interactions. Understanding Ethereum virtual machine semantics and Layer 2 protocols supports evaluation of Arbitrum solutions and their dependencies. Practical knowledge and clear risk communication are the core skills expected in this position. Interviewers often ask how you triage and communicate risk, making calm judgment under pressure essential. Showing calm judgment under pressure matters as much as technical depth during the evaluation process. Demonstrated experience with blockchain infrastructure is a hard bar for readiness to assess real-world risks in production.

Practical notes

Typical interview steps

Security interviews usually include a technical assessment, a threat modeling exercise, and behavioral rounds. Candidates may be asked to review a code sample for vulnerabilities or design a secure system. Practical knowledge and clear risk communication are the core skills. Interviewers often ask how you triage and communicate risk. Showing calm judgment under pressure matters as much as technical depth. Good questions to ask the employer in the interview: what does success look like in the first six months, how is the team structured, what is the current biggest challenge, and how are decisions made. Asking about growth paths and the review process is also well received. Employers expect questions, and good ones show preparation.

Career growth

Security careers grow from analyst or engineer to senior, staff, and leadership roles. Specializations include cloud security, application security, and security operations. Certifications help early; demonstrated impact matters later. Security careers reward specialization and a track record of finding and fixing real issues. Written communication of risk is a core skill at senior levels.

About the company

Offchain provides technical infrastructure used by global companies. The focus is on protocol level breakthroughs. These breakthroughs support movement toward secure, programmable onchain infrastructure. Current work centers on foundational components that chains and applications can build upon. Services target organizations needing scalable base layers. Progress is measured by improvements in security and programmability. Teams rely on these core systems to operate with dependable structure and predictable behavior in production environments.