QA Engineer

Halborn Inc; Miami (FL); On-site; USD 85,000 - 130,000; Full time

Job summary

Halborn Inc in Miami, FL seeks a QA Engineer to own quality across internal platforms and client-facing products, building the automation and AI-assisted workflows that scale testing without headcount bottlenecks.

You will design automated UI, API, and data-layer tests, drive the test strategy, and partner with security engineers to integrate regression checks, while pushing fast-moving QA in a blockchain security context.

Qualifications

• 3 to 5 years in QA engineering, SDET, or test automation, with a shift toward automation.
• Hands-on with modern automation frameworks (Playwright, Cypress, Selenium, pytest).
• API testing experience including REST/GraphQL.
• Knowledge of CI/CD (GitHub Actions, GitLab CI, Jenkins).
• Experience with AI-assisted testing tools and regression automation.
• Comfort with Git, containerized environments, and reading code to test.
• Strong written bug reports and test plans for asynchronous teams.

Responsibilities

• Own test strategy for internal platforms and client-facing products.
• Design, build and maintain automated UI, API, and data-layer test suites.
• Leverage AI-assisted tooling to generate edge cases and summarize regressions.
• Implement quality gates in CI/CD to keep only green builds.
• Automate manual QA processes and data generation.
• Reproduce and document defects with clear repro steps.
• Collaborate with security engineers to include regression checks.
• Run performance, load, and reliability testing on sensitive data.

Skills

Playwright

Cypress

Selenium

pytest

CI/CD

AI tooling

Git

Containers

Tools

Foundry/HadHard tooling

Job description

QA Engineer

Halborn Inc Miami, Florida, United States

About this position

About Halborn Inc

Our mission is to provide value-add security services and products to the world’s most cutting edge technology firms and that starts with blockchain tech. Founded in 2019, Halborn is an elite cyber security company focused on solving complex adversarial problems unique to the cryptocurrency and fintech industries. From breaches and social engineering to stolen private keys and economic hacks, Halborn solves it. Our clientele are the exclusive blockchain companies as well as new startups with high growth trajectories.

Our Culture

Halborn is a globally distributed team of 100+, looking to grow our elite team of white hat hackers, sales professionals, security engineers and DevSecOps specialists who value independence, want to make their own hours, work for themselves and have a passion for the ever evolving cryptocurrency industry.

Our Commitment to Diversity

Halborn Inc is an Equal Opportunity Employer. We do not discriminate based upon race, religion, color, national origin, sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, education, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics and celebrates the diversity of its growing team.

We are unable to sponsor or take over sponsorship of employment Visas at this time.

We are looking for a QA Engineer who treats manual testing as a temporary condition. You will own quality across the internal platforms our security researchers depend on and the client-facing products that deliver our findings — and you will build the automation, tooling, and AI-assisted workflows that make that coverage possible without a headcount-shaped bottleneck. If your instinct when you see a repetitive process is to write the thing that replaces it, you will fit here.

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.

Qualifications

• 3 to 5 years in QA engineering, SDET, or test automation, with a demonstrated shift from manual execution toward automated coverage.
• 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.

Bonus Points

• 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.