ai analyst backend bitcoin blockchain community manager crypto cryptography cto customer support dao data science defi design developer relations devops discord economy designer entry level erc erc 20 evm front end full stack gaming ganache golang hardhat intern java javascript layer 2 marketing mobile moderator nft node non tech open source openzeppelin pay in crypto product manager project manager react refi research ruby rust sales smart contract solana solidity truffle web3 py web3js zero knowledge
| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Largeton Group | New York, NY, United States | $0k | |||
Draper University | San Mateo, CA, United States | $105k - $165k | |||
Beacon | San Francisco, CA, United States | $106k - $112k | |||
Chainlink Labs | Dallas, TX, United States | $86k - $117k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
Blockdaemon | United States | $80k - $130k | |||
Polymarket | New York, NY, United States | $90k - $112k | |||
Polymarket | New York, NY, United States | $98k - $108k | |||
Polymarket | New York, NY, United States | $98k - $108k | |||
Impossible Cloud | United States | $105k - $147k | |||
Tata Consultancy Services | New York, NY, United States | $100k - $130k | |||
Referment | New York, NY, United States | $175k - $250k | |||
Ondo Finance | United States | $140k - $240k | |||
Perena | United States | $81k - $107k | |||
Signature IT World Inc | United States | $77k - $84k | |||
ThoughtStorm | United States | $77k - $84k |
Summary
Job Summary (List Format) Blockchain QA Engineer
- Ensure correctness, security, and reliability of a verifiable financial data platform anchored to blockchain.
- Validate data-heavy pipelines and ensure ISO 20022 semantic consistency.
- Test blockchain attestation logic, including cryptographic proofs and smart contracts.
- Validate end-to-end chain of custody for financial records: canonicalization, cryptographic integrity, blockchain attestations, selective disclosure, and reconciliation.
- Design, implement, and maintain automated test suites for backend APIs (Golang), smart contracts (Solidity/EVM), and data pipelines (ETL/normalization).
- Conduct rigorous manual testing for complex financial transaction edge cases.
- Perform functional and security testing of smart contracts; validate on-chain state transitions and event emissions.
- Test scenarios involving chain reorganizations, gas spikes, network latency, and failed attestations using tools like Hardhat, Foundry, or Truffle.
- Validate ISO 20022 semantic mapping and perform differential testing to ensure data fidelity.
- Test Merkle tree construction and proof inclusion logic.
- Conduct load and fuzz testing on data ingestion, proof-generation services, smart contracts, and API endpoints.
- Collaborate with Cybersecurity to validate identity and provenance layers.
- Integrate blockchain testing into CI/CD pipelines (ArgoCD/GitHub Actions).
- Develop custom scripts (Python, Go, JS) for test data and event stream simulation.
- Track and document bugs, providing clear reproduction steps.
- Requires 4+ years of QA/SDET experience, 2+ years in blockchain/Web3 QA, and proficiency in at least one programming language (Golang, Python, JS/TS).
- Experience with blockchain testing frameworks (Foundry, Hardhat), API testing tools, and cryptographic primitives.
- Bachelor s degree in Computer Science, Engineering, or related; advanced degrees or MBAs are a plus.
- Nice-to-have: experience in US financial services/fintech, ISO 20022, ZKP systems, GitOps/ArgoCD, identity frameworks, and performance testing tools (k6, JMeter).