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Tessera Labs

Sr. QA Engineer

Tessera Labs is hiring a Sr. QA Engineer for a remote role open to applicants in Brazil. It pays $50k-$60k a year and Level rates it ; you can apply on Tessera Labs.

Level's read on this job

  • On Level's scale, this role is Little AI ●○○○: aI is not part of the work.
  • This is listed as a remote role.
  • The posting mentions Python, Playwright and Cypress among its tools and skills.
  • Level classes it as a senior role.
  • Tessera Labs has 34 other open roles on Level.

AI in this role

Own end-to-end test strategy, automation, and quality assurance across the SDLC in partnership with developers.

PythonPlaywrightCypressPytestK6LocustKubernetes
test-automationci-cdquality-assurancesdlc
Senior QA Engineer

The Role

We're hiring a Senior QA Engineer to own testing across our Software Development Life Cycle (SDLC). This is a strategy-and-automation role, not a click-testing one: you'll own the test strategy, write the test cases, and automate them on top of established open-source testing tools — working shoulder-to-shoulder with developers to bake quality in from the start rather than catch it at the end.

This role partners closely with product and platform engineering.

What You'll Do

  • Own the test strategy end-to-end across the SDLC.

  • Build and own test coverage on top of established open-source testing tools — defining the strategy, writing the test cases, and automating them — and integrate it into our Continuous Integration / Continuous Delivery (CI/CD) pipelines so tests run on every meaningful change.

  • Write clear, maintainable test cases and test plans, and keep them current as the product evolves.

  • Plan and run the full range of testing — including but not limited to integration testing, system testing, regression testing, and stress / load / performance testing.

  • Partner with developers to define acceptance criteria, shift testing left, and make quality a shared responsibility rather than a gate at the end.

  • Triage failures, drive root-cause analysis on escaped defects, and close the loop with durable fixes.

  • Report quality signals (coverage, flake rate, escaped defects) in a way the team can act on.

What You'll Need (Required)

  • Strong test automation skills, with a track record of designing test strategy and automating it on top of established open-source testing tools.

  • Deep, practical understanding of the SDLC and where testing fits at each stage.

  • Proven experience writing test cases and test plans.

  • Hands-on experience across multiple testing types: integration, system, regression, and stress / performance.

  • Experience integrating automated tests into CI/CD pipelines.

  • Strong communication skills — you work directly with developers and can make a clear, persuasive case for quality.

  • Sufficient experience with Python, JS/TS

Nice to Have

  • Strong experience with Python, JS/TS

  • Familiarity with open-source testing tools (for example, Playwright or Cypress for end-to-end, pytest for unit and integration, k6 or Locust for load and stress testing).

  • Exposure to testing cloud or containerized (Kubernetes) workloads.

  • Experience supporting a System and Organization Controls 2 (SOC 2) or similar compliance program by producing test evidence.

  • Background in enterprise or regulated environments where reliability is non-negotiable.

  • Experience in early-stage environments where one person owns a broad testing surface.

What Success Looks Like (First 90 Days)

  • You've assessed current test coverage and identified the highest-leverage gaps.

  • Automated test coverage is running in the pipeline on every meaningful change.

  • The team has a clear, lightweight process for triaging failures and preventing repeat defects.

Location and Work Model

Remote in South America/Mexico/India/LATAM

How we rate this

Sr. QA Engineer at Tessera Labs rates 0 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

  1. ●●●● Builds AI80 to 100
  2. ●●●○ Works on AI60 to 79
  3. ●●○○ Uses AI40 to 59
  4. ●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

Test AutomationCI/CDQuality AssuranceSdlcPythonPlaywrightCypressPytest

Questions you could be asked

  1. Tell me about a project where test automation was part of your work. What did you do?
  2. Tell me about a project where ci/cd was part of your work. What did you do?
  3. Tell me about a project where quality assurance was part of your work. What did you do?
  4. Tell me about a project where sdlc was part of your work. What did you do?
  5. Walk me through how you've used Python in your day-to-day work.

Adapt your resume

  • List these exact terms on your resume: Test Automation, CI/CD, Quality Assurance, Sdlc, and Python. An applicant tracking system matches the wording, not the idea.
  • Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.

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