QA Engineer - Blockchain & Security Automation

Halborn; United States; Remote; USD 120,000 - 170,000; Full time

Job summary

Halborn, a globally distributed cybersecurity company focused on blockchain, is seeking a QA Engineer/SDET to own the test strategy for internal engineering platforms and client‑facing products. You will design, build, and maintain automated UI, API, and data‑layer tests, ensuring fast, deterministic results relied on by engineers.

You'll leverage AI coding assistants and LLM tooling to accelerate test authoring, integrate robust quality gates into CI/CD, automate release checklists, and drive

Qualifications

• 3 to 5 years in QA engineering, with automation focus.
• Strong programming ability in at least one of TypeScript, JavaScript, or Python.
• Hands-on experience with Playwright, Cypress, Selenium, pytest, or equivalent.
• Practical API testing experience, including REST or GraphQL services.
• Working knowledge of CI/CD systems and owning pipeline configuration.
• Daily use of AI coding assistants and LLM tooling in workflow.

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

QA engineering

TypeScript/JavaScript/Python

Playwright

Cypress

Selenium

pytest

API testing

CI/CD automation

LLM tooling

Git

Blockchain security

Tools

Playwright

Cypress

Selenium

pytest

GitHub Actions

GitLab CI

Jenkins

Job description

Halborn, a globally distributed cybersecurity company focused on blockchain, is seeking a QA Engineer/SDET to own the test strategy for internal engineering platforms and client‑facing products. You will design, build, and maintain automated UI, API, and data‑layer tests, ensuring fast, deterministic results relied on by engineers.

You'll leverage AI coding assistants and LLM tooling to accelerate test authoring, integrate robust quality gates into CI/CD, automate release checklists, and drive