QA Engineer: Automate & Elevate Blockchain Platforms

Halborn Inc; Miami (FL); On-site; USD 90,000 - 130,000; Full time

Job summary

Halborn Inc, a blockchain-focused cybersecurity firm, seeks a QA Engineer to own quality across internal engineering platforms and client-facing products. You will design and maintain automated UI, API, and data-layer test suites, using Playwright, Cypress, Selenium, or pytest, and apply AI-assisted tooling to accelerate test authoring and triage.

You will implement CI/CD quality gates and help define metrics to improve release readiness.

Qualifications

• 3 to 5 years in QA engineering, SDET, or test automation.
• Strong programming ability in at least one of TypeScript, JavaScript, or Python.
• 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.

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

Automation

TypeScript

JavaScript

Python

Playwright

Cypress

Selenium

pytest

API testing

REST/GraphQL

CI/CD

Git

LLM tooling

Blockchain knowledge

Job description

Halborn Inc, a blockchain-focused cybersecurity firm, seeks a QA Engineer to own quality across internal engineering platforms and client-facing products. You will design and maintain automated UI, API, and data-layer test suites, using Playwright, Cypress, Selenium, or pytest, and apply AI-assisted tooling to accelerate test authoring and triage.

You will implement CI/CD quality gates and help define metrics to improve release readiness.