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| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Token Metrics | Austin, TX, United States | $45k - $72k | |||
Offchain Labs | Remote | $122k - $136k | |||
Bitgo | Remote | $160k - $200k | |||
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Zinnia | Remote | $96k - $112k | |||
Launchpadtechnologiesinc | Latam | $81k - $90k | |||
Kraken | United States | $127k - $254k | |||
Brave | Remote | $120k - $15k | |||
Bitgo | Remote | $126k - $132k | |||
Joy Network | New York, NY, United States | $91k - $180k |
Token Metrics
$45k - $72k estimated
SDET Intern (Mobile and DeFi)
Austin, TX
Engineering Team /
Part-time /
Remote
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Mission
We are building a mobile-first passive investing app on HyperEVM. Our software handles real user funds and there is no undo button on-chain. Reliability and safety are core product features.
We do not run manual QA as a primary strategy. This role builds automated testing and quality gates that catch failures in CI before they reach users
What you will do
You will build and maintain an automated defense system for our highest-risk flows:Wallet connectionUSDC deposit and withdrawPortfolio selectionRebalance and risk guardrailsveTMAI membership gating
Stack
Mobile automation: Maestro (YAML-based flows for mobile UI and WebViews)
Smart contract testing: Foundry (unit tests, fuzzing, invariants)
Web automation: Cypress (secondary coverage for the read-only web dashboard)
CI/CD: GitHub Actions
Core code: TypeScript (React Native) and Solidity (ERC-4626 vaults)
Requirements
Must-haves
You are engineering-first. You write automation as production-quality code, not record-and-playback scripts.
Experience with at least one mobile E2E tool: Maestro, Detox, or Appium.
Comfortable with CI/CD and GitHub Actions workflows.
Strong debugging habits: You read logs, isolate root cause, and fix determinism issues.Clear written communication and consistent progress updates.
Nice-to-haves
DeFi familiarity: ERC-20 approvals, wallet signatures, and basic transaction states (submitted, confirmed, reverted).Foundry experience (or strong Solidity testing instincts).Experience testing React Native apps with WebViews.Experience shipping in a fast-moving startup environment.
Interview process
Portfolio review: We review your GitHub and look for evidence you built automation, CI, or test infrastructure that shipped.
Take-home build: We provide a simple React Native build and ask you to produce a working Maestro flow plus a minimal CI workflow.
Technical walkthrough: You explain your selector strategy, wait strategy, failure handling, and how you would scale coverage.
To apply
Send: GitHub link (or a code sample)
A short note describing the hardest test automation problem you solved and how you approached it
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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What does a React developer in web3 do?
A React developer in the context of web3 is a developer who is using the React JavaScript library to build user interfaces for decentralized applications (dApps) that run on the Ethereum blockchain
These dApps often use smart contracts to facilitate transactions and other interactions on the Ethereum network
Overall, the role of a React developer in web3 involves using your skills in React development to help build cutting-edge decentralized applications that leverage the power of the Ethereum blockchain
As a React developer in web3, some of your responsibilities might include:
- Integrating the dApp with the Ethereum blockchain. This might involve using tools like web3.js and Ethers.js to connect to the Ethereum network and interact with smart contracts.
- Building the user interface for a dApp using React. This could involve creating components for the various elements of the dApp, such as buttons, forms, and other input elements.
- Implementing features that are specific to decentralized applications, such as handling cryptocurrency transactions and displaying data from the blockchain in a user-friendly way.
- Collaborating with other members of the development team, such as blockchain engineers and designers, to ensure that the dApp functions properly and meets the needs of the end users.