Senior QA / Test Engineer - 12 Weeks (570)

Info on the Senior QA / Test Engineer role

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Ubiminds is a GPTW-certified, people-first company that partners with American software product companies to scale their development footprint. Ubi custom-curates Brazilian top 5% talent for their LATAM strategy, offering a unique combo of staff augmentation and employer-of-record services.

We are hiring 2 Senior QA / Test Engineers for this engagement.

Challenge

We’re looking for Senior QA / Test Engineers to own the validation of the deterministic decision path across every rule and input.

You will be responsible for verifying that PERMIT / DENY / ESCALATE outcomes resolve correctly across the full governance rule library and the custom-rule intake path. You will build traceable functional coverage, validate end-to-end workflows, and support the Security / QA Lead with adversarial and audit-chain testing.

Precision is critical: on a deterministic control plane, a single incorrect outcome is considered a defect.

The engagement is full-time, approximately 12 weeks, and remote within.

Responsibilities

• Author and execute functional test cases across the full governance rule library, verifying correct PERMIT / DENY / ESCALATE outcomes.

• Test the custom-rule intake path end to end, ensuring that a submitted rule resolves to a real engine record through the live path.

• Build negative and edge-case test coverage focused on the actions the platform is designed to stop.

• Support the Security / QA Lead with multi-tenant isolation and audit-chain testing.

• Maintain a traceable mapping between test cases, rules, and requirements.

• Log defects with clear reproduction steps in GitHub Issues.

• Re-test fixes through the freeze-audit CI gate.

Mandatory Skills

• Solid QA / Test Engineering experience with API-driven backends.

• Working knowledge of Python and the ability to read source code to design precise tests.

• Experience with rule-based, workflow, or decision-logic systems where correctness is explicitly defined.

• Experience with Postgres / SQL for validating persisted state.

• Comfortable working with Docker and CI-based test execution, such as GitHub Actions or similar.

• Disciplined approach to reproducible defect reporting.

• English B1

Nice to Have

• Test automation experience against Python services.

• Exposure to authorization or policy-engine testing.

• Interest in security testing and developing further expertise in this area.

Team & Environment

• Focus: Functional correctness of the deterministic decision path.

• Seniority: Senior

• Reports to: Senior Security / QA Lead.

• Full-time engagement of approximately 12 weeks.

• Remote position within LATAM.

• Environment focused on precise, traceable, and reproducible testing.

• Close collaboration with the Senior Security / QA Lead on security and audit-chain coverage.

Success in the First 12 Weeks

• Full-coverage functional test suite across the rule library, executed with documented results.

• Custom-rule intake path verified end to end.

• Traceable test-case library successfully handed over.

• Clean defect flow through green CI.

About Ubiminds

Our Culture

People First. We are all about people!

Challenge Yourself. Continuous improvement is in our essence.

Make it Happen. We value attitude, ownership, and commitment.

We’re in This Together. We work, grow, and evolve as a team.

Averaging on Awesome. We deliver high-quality services and exceed expectations.

Keep it Real. Honesty, transparency, and openness — always.

Perks and Benefits

As a Senior QA / Test Engineer @Ubiminds, you:

• Are placed in a product-based company and treated like a full-time team member.

• Count on our full back-office support: career guidance, HR, and concierge services.

• Enjoy our remote-first policy.

• Get your own MacBook (no BYOD here!).

• Access tech talks, chapter meetings, and a strong community of top engineers.

• Improve your English through free lessons with a native English speaker.

• Earn a referral bonus when recommending new Ubiminders.

• Want office vibes sometimes? Our Florianópolis HQ is open — snacks, massages, drinks, and games included.

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