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Tezos ecosystem career opportunities

Tezos is the product of many organizations and individuals across the globe working together on an open-source project.

QA Engineer (Web3 / On-Chain Trading)

Madfish

Madfish

Quality Assurance
Ukraine · Dniprovs'kyi district, Kyiv, Ukraine · Portugal
Posted on Oct 5, 2025

Responsibilities:

  • Design and execute test plans focused on the internal trading terminal (UI) used by traders to manage strategies.
  • Perform manual functional, integration, and regression testing of trading workflows.
  • Validate user interface flows, order management, and risk control features.
  • Test CEX and on-chain integrations, including API connections, wallet interactions, and transaction confirmations.
  • Collaborate closely with traders and developers to reproduce issues and improve usability.
  • Monitor production environments and report anomalies in trading flows.

You will be testing:

  • Trading terminal UI and its strategy management features.
  • Exchange connectors (CEX/DEX, REST, WebSocket).
  • On-chain execution flows and smart contract interactions (Solana / EVM preferred).
  • Data storage and logging systems for accuracy and completeness.
  • Risk checks and order execution logic from the user’s perspective.

Main requirements:

  • Minimum 1 year of QA experience (manual testing, ideally of complex UI-driven systems).
  • Strong understanding of testing methodologies (functional, regression, usability, integration).
  • Ability to work with logs and monitoring tools.
  • Familiarity with REST/WebSocket APIs.
  • At least minimal experience with Web3 (wallets, transactions, smart contracts, or on-chain trading).

Nice to have (not required):

  • Experience with test automation (Python/JavaScript/C++).
  • Background in financial, trading, or fintech products.
  • Understanding of cryptocurrency markets (spot, derivatives, CEX/DEX).
  • Exposure to HFT or algorithmic trading workflows.
  • Experience with blockchain infrastructure and RPC endpoints.