Blockchain Engineer

Blockvora; Switzerland; Hybrid; CHF 120,000 - 180,000; Full time

Job summary

Blockvora is seeking a Blockchain Engineer to design and implement smart contracts and integrate on-chain systems with backend services. You will ship production-ready code with a focus on correctness, gas efficiency, and operational safety.

You will collaborate closely with product and engineering teams, write tests and deployment scripts, review security risks, and contribute to token flows and market mechanics.

Qualifications

• 3+ years of software engineering experience.
• Strong Solidity or equivalent contract experience.
• Understanding of EVM fundamentals and patterns.
• Experience with Hardhat / Foundry (or similar).
• Ability to reason about security and edge cases.
• Comfort collaborating with backend and product teams.

Responsibilities

• Design and implement smart contracts
• Integrate on-chain systems with backend and frontend services
• Write tests, deployment scripts, and upgrade paths
• Review contract security and operational risks
• Support indexing, events, and transaction monitoring
• Collaborate on token, custody, and market flows

Skills

3+ years exp

Solidity

EVM fundamentals

Hardhat/Foundry

Security focus

Team collaboration

Tools

ethers.js

web3.js

Job description

We are hiring a Blockchain Engineer to design and implement smart contracts and chain integrations. You will work closely with backend and product teams to ship secure, production-ready on-chain systems. This is a hands‑on role focused on correctness, gas efficiency, and operational safety.

What you'll do

• Design and implement smart contracts
• Integrate on-chain systems with backend and frontend services
• Write tests, deployment scripts, and upgrade paths
• Review contract security and operational risks
• Support indexing, events, and transaction monitoring
• Collaborate on token, custody, and market flows

What we're looking for

Must-have experience and skills for this role.

• 3+ years of software engineering experience
• Strong Solidity or equivalent smart contract experience
• Understanding of EVM fundamentals and common patterns
• Experience with Hardhat / Foundry (or similar)
• Ability to reason about security and edge cases
• Comfort collaborating with backend and product teams

Nice to have

• Audit experience or formal verification exposure
• L2 networks (Polygon, Arbitrum, Optimism)
• ethers.js / web3.js integrations
• RWA, DeFi, or fintech product experience
• Solidity
• Hardhat / Foundry
• Ethereum L2s
• ethers.js
• Node.js
• Work on modern Web3, RWA, and digital products
• High ownership and visible product impact
• Close collaboration with engineering, product, and design
• Fast-paced environment with real production systems
• Remote-friendly across global time zones

Hiring process

• Application review
• Technical interview
• Final discussion