Senior QA Engineer - dreamDEX

About Somnia The Somnia Foundation, backed by Improbable, specialises in building and operating high-performance decentralised technology. Its EVM L1, launched in 2025, has been benchmarked as the fastest on the planet: at over 1 million ERC-20 transactions per second. You’ll join a talented team at Somnia, working across the core blockchain along with novel protocols leveraging its capabilities: - Somnia Agents adding the ability for smart contracts to leverage the latest open-source LLMs and interact with the outside world via headless browsers, powered by on-chain deterministic LLM inference and a decentralised network of agent runners - Prophecy an information oracle that can combine parsing of public websites and public data sources into decentralised, auditable attestations about the real world, powering prediction markets, forecasting and new types of financial systems - dreamDEX a high-performance DEX with a fully on-chain CLOB leveragingSomnia's core capabilities, targeting centralised exchange characteristics - Somnia L1 continued work on the high-performance EVM L1, including working on MEV resistance, privacy, automatic gas sponsorship and 'reactivity' where smart contracts can autonomously invoke themselves based on specific timing or event criteria

About the Role

Key Responsibilities

• Own end-to-end test coverage across the system: order matching, settlement, margin and liquidation, deposits and withdrawals, the API surface and the frontend - Define the test strategy for every new product and feature before it ships: spot, perps and event contracts - Build automated test infrastructure, using AI to multiply your reach: generated test cases, agent-driven exploratory testing and LLM-assisted triage - Drive a edge-case testing: partial fills, reorg and oracle-deviation scenarios, liquidation cascades and the agent-driven attack surface (we run a live red-team scope for DoS and exploitation on testnet) - Communicate effectively and proactively with other parts of the organisation and drive discussions between different projects.

• Run regression and load testing against Somnia's throughput and latency profile - Drive defect management, ensuring issues are prioritised appropriately, root causes are understood and regressions cannot recur.

Requirements

• Showcase deep experience with high‑throughput blockchain testing: include a GitHub repo where you built automated performance tests (e.g., using Locust or custom Go/Rust load generators) that simulate ≥1 M TPS and report latency, bottlenecks, and resource usage; be ready to walk interviewers through the test design and results.
• Demonstrate proficiency in Solidity/Foundry/Hardhat and property‑based fuzz testing: add a case study to your portfolio where you used Foundry’s fuzz engine or Echidna to uncover edge‑case bugs in smart contracts that interact with LLM agents, and explain how you ensured deterministic reproducibility across test runs.
• Highlight work on deterministic on‑chain LLM inference and agent runners: build a small demo (e.g., a mock Somnia Agent that calls an open‑source LLM via a headless browser) and write end‑to‑end tests that verify state consistency, timeout handling, and security sandboxing; reference this in your résumé and be prepared to discuss the testing challenges of integrating external AI services.
• Prepare for interview questions on CI/CD for decentralized systems: detail a pipeline you built (GitHub Actions, Jenkins, or Buildkite) that automatically runs unit, integration, and performance suites on every pull request, including steps for spinning up temporary testnets and cleaning up after execution.
• Leverage market data for salary negotiation: research senior QA salaries at blockchain‑focused remote firms (e.g., ConsenSys, Dapper Labs) and calculate a range (e.g., $180‑$220k base + equity). When discussing compensation, reference your benchmark, the specialized nature of the role (high‑TPS, LLM integration), and ask for a token‑grant component tied to network performance milestones.