QA Engineer (Remote locations)

Summary

Halborn is a cybersecurity company focused on blockchain, cryptocurrency, and fintech technologies. The QA Engineer will own test strategy, build and maintain automated UI, API, and data-layer test suites, improve CI/CD quality gates, integrate security regression checks, and support release readiness through quality metrics and testing.

Responsibilities

• Own the test strategy for Halborn's internal engineering platforms and client-facing products, from unit and integration coverage through end-to-end and regression suites
• Design, build and maintain automated test suites in code — UI, API, and data-layer — and keep them fast, deterministic, and trusted by the engineers who depend on them
• Use LLM-assisted tooling to accelerate test authoring, generate edge cases from specs and diffs, triage failing runs, and summarize regressions for the team
• Build and tune quality gates in CI/CD so that broken builds never reach a client environment, and so that the feedback loop stays measured in minutes
• Identify manual QA processes and automate them out of existence — release checklists, environment setup, test data generation, smoke verification, reporting
• Reproduce, isolate, and file defects with unambiguous repro steps, expected versus actual behavior, and enough context for an engineer to fix it without a follow-up conversation
• Partner with security engineers to fold security regression checks — authentication, authorization, input handling, secrets exposure — into the standard pipeline
• Run performance, load, and reliability testing against services handling sensitive audit and engagement data
• Define and report the quality metrics that matter: escaped defect rate, flake rate, coverage of critical paths, and time to detection
• Contribute to release readiness decisions and act as an informed voice on whether something ships

Skills

• 3 to 5 years in QA engineering, SDET, or test automation, with a demonstrated shift from manual execution toward automated coverage
• Strong programming ability in at least one of TypeScript, JavaScript, or Python — you write test code that other engineers are willing to read and maintain
• Hands-on experience with modern automation frameworks such as Playwright, Cypress, Selenium, pytest, or equivalent
• Practical API testing experience, including contract, integration, and negative-path testing against REST or GraphQL services
• Working knowledge of CI/CD systems (GitHub Actions, GitLab CI, Jenkins, or similar) and comfort owning pipeline configuration yourself
• Daily, deliberate use of AI coding assistants and LLM tooling in your own workflow, with a clear point of view on where they help and where they must be verified
• Comfort with Git, containerized local environments, and reading application code to understand what you are testing rather than testing blind
• Excellent written communication — in a distributed, asynchronous team, a well-written bug report or test plan is the deliverable
• High autonomy and strong self-direction in a fast-moving environment where priorities shift
• Willingness to learn the technical aspects of blockchain, smart contracts, and cybersecurity
• Experience testing Web3 applications — wallet flows, testnets, RPC interactions, or smart contract tooling such as Foundry or Hardhat
• Experience building evaluation harnesses for LLM-powered features, including regression testing of non-deterministic output
• Background in security testing, OWASP methodology, or hands-on time with tools like Burp Suite
• Performance and load testing with k6, Locust, JMeter, or similar
• Experience with observability tooling and using production telemetry to find gaps in test coverage
• Open source contributions to testing frameworks or developer tooling
• Knowledgeable of the latest trends in Blockchain and DeFi

Qualifications

Must Haves

• 3 to 5 years in QA engineering, SDET, or test automation, with a demonstrated shift from manual execution toward automated coverage
• Strong programming ability in at least one of TypeScript, JavaScript, or Python — you write test code that other engineers are willing to read and maintain
• Hands-on experience with modern automation frameworks such as Playwright, Cypress, Selenium, pytest, or equivalent
• Practical API testing experience, including contract, integration, and negative-path testing against REST or GraphQL services
• Working knowledge of CI/CD systems (GitHub Actions, GitLab CI, Jenkins, or similar) and comfort owning pipeline configuration yourself
• Daily, deliberate use of AI coding assistants and LLM tooling in your own workflow, with a clear point of view on where they help and where they must be verified
• Comfort with Git, containerized local environments, and reading application code to understand what you are testing rather than testing blind
• Excellent written communication — in a distributed, asynchronous team, a well-written bug report or test plan is the deliverable
• High autonomy and strong self-direction in a fast-moving environment where priorities shift
• Willingness to learn the technical aspects of blockchain, smart contracts, and cybersecurity

Nice to Haves

• Experience testing Web3 applications — wallet flows, testnets, RPC interactions, or smart contract tooling such as Foundry or Hardhat
• Experience building evaluation harnesses for LLM-powered features, including regression testing of non-deterministic output
• Background in security testing, OWASP methodology, or hands-on time with tools like Burp Suite
• Performance and load testing with k6, Locust, JMeter, or similar
• Experience with observability tooling and using production telemetry to find gaps in test coverage
• Open source contributions to testing frameworks or developer tooling
• Knowledgeable of the latest trends in Blockchain and DeFi

Benefits

• Remote work arrangement for a globally distributed team
• Flexible hours: team members can make their own hours