Blockchain Engineer

ErthDev; United States; Remote; USD 34,000 - 83,000; Part time

Benefits offered by this job

Part-time remote

Remote Egypt

Flexible hours

Performance bonuses

Annual salary reviews

Medical insurance

Equipment and internet support

Learning & development opportunities

Job summary

ErthDev is seeking a distributed-ledger engineer to design and build smart contracts and blockchain integrations. The role emphasizes security, cost considerations, and evaluating when blockchain is the right choice for a given problem.

You will collaborate with product, backend, and security teams, review and test contract code for vulnerabilities, and contribute to both on-chain and off-chain components. This is a part-time, fully remote position open to candidates in Egypt.

Qualifications

• Practical experience developing smart contracts and blockchain applications.
• Strong security awareness for on-chain systems and experience testing or reviewing contract code.
• Solid backend engineering fundamentals and familiarity with relevant cryptography basics.
• Ability to explain technical and architectural trade-offs to non-crypto stakeholders.
• Clear documentation habits and judgment about when blockchain is unnecessary.

Responsibilities

• Design and implement smart contracts and blockchain integrations.
• Assess whether a distributed ledger is appropriate for each problem and explain the trade-offs.
• Build on-chain and off-chain components, integrating wallets, indexing, and backend services as needed.
• Test and review contract code for common security vulnerabilities.
• Document trust assumptions, risks, and operational procedures.
• Collaborate with product, backend, and security teams; monitor deployments and help respond to chain-related incidents.

Skills

Smart contracts

Blockchain apps

Security awareness

Cryptography basics

Backend fundamentals

Documentation habits

Tools

Solidity

EVM networks

Auditing practices

Indexing tools

Wallet UX

Key management

Job description

Role overview

Design and build distributed-ledger features for problems that require shared trust, verifiable records, or decentralized state. The work spans smart contracts and connected application services, with careful attention to security, operating costs, and whether blockchain is a suitable architectural choice.

Responsibilities

• Design and implement smart contracts and blockchain integrations.
• Assess whether a distributed ledger is appropriate for each problem and explain the trade-offs.
• Build on-chain and off-chain components, integrating wallets, indexing, and backend services as needed.
• Test and review contract code for common security vulnerabilities.
• Document trust assumptions, risks, and operational procedures.
• Collaborate with product, backend, and security teams; monitor deployments and help respond to chain-related incidents.

Requirements

• Practical experience developing smart contracts and blockchain applications.
• Strong security awareness for on-chain systems and experience testing or reviewing contract code.
• Solid backend engineering fundamentals and familiarity with relevant cryptography basics.
• Ability to explain technical and architectural trade-offs to non-crypto stakeholders.
• Clear documentation habits and judgment about when blockchain is unnecessary.

Nice to have

• Experience with Solidity, EVM networks, auditing practices, indexing tools, wallet user experience, or secure key management.

Benefits and work setup

• Part-time, fully remote role for candidates in Egypt, with flexible hours and some collaboration overlap; office access is available when needed.
• Paid annual and sick leave, performance bonuses, annual salary reviews, medical insurance, equipment and internet support.
• Learning and development support, including courses, certifications, conference opportunities, mentorship, and exposure to projects across industries.