This position is in Zama’s Developer Platform team

Zama recently unveiled the Zama Confidential Blockchain Protocol, which enables confidential smart contracts on top of any blockchain L1 or L2, using Fully Homomorphic Encryption (FHE). The Zama Developer Platform (ZDP) is our managed gateway that lets internal teams and external developers use the open-source Zama Protocol through simple, authenticated HTTPS endpoints. Think Infura or Alchemy, but confidential by default.

We are looking for a Web3/Oracle Engineer to own and expand this critical infrastructure. You will be responsible for the full lifecycle of our oracle, from writing secure, multi-chain smart contracts to building the robust backend services that power them. This is a high-impact role at the heart of our protocol, with a direct influence on our expansion to new EVM chains and our work on cross-chain standards with partners like LayerZero.

What you will do

• Design and deploy on-chain oracle contracts: Write, test, and deploy highly secure and gas-efficient Solidity contracts with robust upgradeability paths (e.g., proxy/UUPS) across multiple EVM networks.

• Build and maintain off-chain services: Develop event-driven relayer/oracle services (Rust or TypeScript) that handle retries/backoff, idempotency, out-of-order delivery, and reorgs; instrument with meaningful telemetry.

• Lead cross-chain integration: Drive the technical implementation of confidential token standards and messaging with interoperability protocols (e.g., LayerZero/OFT-style flows) and maintain production-adjacent reference implementations that partners can adapt.

• Chain onboarding playbook: Maintain a repeatable checklist per chain (finality, gas limits, precompiles/syscalls, block time, log quirks) so new L1/L2 bring-up is measured in weeks, not months.

• E2E collaboration: Partner with QA/Automation to exercise oracle flows in CI against devnet/testnet; add canaries and regression suites to minimise flake.

• Own oracle security and reliability: Participate in security audits, design robust monitoring and alerting for all system components, and ensure the high uptime and performance of the entire oracle stack.

• Deep smart contract and tooling expertise: Strong proficiency in Solidity and the EVM, with experience managing production contracts using Foundry or Hardhat (including property tests, fuzzing, and custom errors).

• Solid backend engineering skills: Hands-on experience building and maintaining production backend services in a systems language like Rust or TypeScript.

• Cross-chain messaging experience: Hands-on with LayerZero (preferred) or similar (CCIP/Hyperlane/etc.): endpoint setup, message verification, retries/idempotency, reorg/replay awareness.

• Strong systems thinking: A clear understanding of the complexities of distributed systems, including on-chain/off-chain communication, event handling, and failure modes.

• A security-first mindset: A pragmatic, rigorous approach to security when handling on-chain value, cryptographic material, and cross-chain messages (replay protection, signature schemes, upgrade safety).

• Collaborative and proactive attitude: The ability to work closely with the protocol and platform teams to design and implement robust, end-to-end solutions.

Nice to have

• Fuzzing & static analysis: Foundry fuzz, Slither, Echidna, gas profiling, and verification pipelines

• Prior experience building or working on oracle systems.

• Experience with cross-chain protocols (e.g., LayerZero, Chainlink CCIP) and standards (e.g., OFT).

• Familiarity with multi-chain deployment and testing frameworks.

• Participation in smart contract security audits (as an auditor or auditee).

• Only candidates based in +/- 4 hours of UTC are suitable for this role.

📋 Step 1: The Application Form
Start your journey by filling out our application form. This is your chance to introduce yourself and showcase your unique skills and experiences.

🏆 Step 2: The Challenge
Next up, tackle our challenge! This is where you can shine and show us how you approach and solve real-world problems.

💼 Step 3: The Technical Interview
Dive deep into your technical knowledge with our team. This is your opportunity to demonstrate your expertise and passion for the field.

🤝 Step 4: Cultural Fit & Compensation Chat
Meet with our COO to discuss our company culture and explore how you can thrive with us. We’ll also discuss compensation to ensure we’re on the same page.

🛠️ Step 5: The Hacking Trial
Put your skills to the test in a real-world hacking scenario. This trial helps us see your practical skills in action and how you handle challenges.

🔍 Step 6: The Reference Check & Offer
As a final step, we’ll conduct a reference check to confirm your qualifications and past experiences. If all goes well, you will get an offer soon.

We provide more details on our process here. Exceptional candidates will hear from us as we advance through the recruitment process.

Zama values and promotes diversity. We give everyone a fair chance to be evaluated on their professional, academic, and personal skills. Our aim is to make the hiring process as pleasant, stress-free, and friendly as possible, even if the process is longer and more involved than you might find elsewhere.