Lucas Smit

Co-Founder

São Sebastião do Caí, Rio Grande do Sul, Brazil8 yrs 9 mos experience
Most Likely To SwitchAI ML Practitioner

Key Highlights

  • Expert in AI Red Teaming and quality engineering.
  • Led successful AI testing initiatives with significant cost savings.
  • Recognized for establishing quality strategies in high-impact projects.
Stackforce AI infers this person is a highly skilled AI Quality Engineer specializing in AI testing and automation within the SaaS industry.

Contact

Skills

Core Skills

Ai Red TeamingTest AutomationAi TestingQuality Assurance ProcessesTest PlanningSoftware TestingWeb DesignMarketingLeadershipProject Management

Other Skills

Continuous Integration and Continuous Delivery (CI/CD)LM StudioPlaywrightPrompt InjectionLLM evaluationBlueJaySecurity vulnerability testingModel version/benchmark comparison testingHallucination detectionJailbreak TestingPrompt Injection TestingGenerative AIFairness/bias auditingGitHub ActionsRetrieval-Augmented Generation (RAG)

About

The AI-first SDET. I help QA engineers rethink quality engineering for the age of AI. From AI-augmented QA initiatives to LLM testing and Red Teaming, my work sits at the intersection of traditional software quality and emerging AI reliability challenges. I focus on helping QA teams transition from executors into strategic architects of AI quality, helping them navigate the new challenges and opportunities AI brings to software engineering. Curious about AI in QA, AI security, or the evolving role of quality engineers? You’re in the right place.

Experience

8 yrs 9 mos
Total Experience
2 yrs 11 mos
Average Tenure
4 yrs 1 mo
Current Experience

Stella foster

AI Quality Engineer

Feb 2026Present · 3 mos · United States · Remote

  • As a consultant for Stella I focused on adversarial testing and quality evaluation for the LLM-powered assistant, covering red teaming, behavioral evals, and test automation for voice and SMS AI agents.
  • Identified and mitigated 20+ high-risk AI vulnerabilities in one week through the implementation of a Red Teaming program from scratch using Promptfoo, covering prompt injection, jailbreaks, harmful output detection, PII leakage, and OWASP LLM Top 10 threats across 50+ attack categories;
  • Led the technical execution of the Red Teaming initiative, defining the overall attack strategy and coordinating work across 5 QA engineers;
  • Architected a GitHub Actions CI/CD pipeline to run red teaming as part of every release cycle, with automated reporting and failure gating to block unsafe model behavior from reaching production;
  • Implemented LLM behavioral eval suites for an SMS AI agent using Promptfoo's LLM-as-a-judge feature, covering response accuracy, instruction-following, hallucination detection, edge case handling, and fairness/bias auditing;
  • Built end-to-end automated tests for a Voice AI agent using Playwright and Bluejay, validating conversational flows, turn-taking logic, and fallback handling;
  • Provided detailed cost-performance tradeoff analyses between OpenAI, Claude, and Gemini models, guiding model selection that saved 30% monthly API spend without compromising latency.
Continuous Integration and Continuous Delivery (CI/CD)LM StudioPlaywrightPrompt InjectionLeadershipLLM evaluation+15

Optro

4 roles

SDET II

Promoted

Jan 2026Present · 4 mos · United States · Remote

  • Lead SDET for the Third Party Risk Management (TPRM) product. I joined the team at the MVP stage and established the entire quality strategy, scaling the product into a widely adopted feature with multi-million dollar ARR. Our work on TPRM was recognized with a 2023 Global InfoSec Award from Cyber Defense Magazine.
  • Currently focused on AI-augmented quality initiatives, LLM testing and Red Teaming.
Security vulnerability testingTest AutomationJailbreak TestingPrompt Injection TestingAI Red TeamingRetrieval-Augmented Generation (RAG)+2

SDET

Jan 2024Jan 2026 · 2 yrs · United States · Remote

  • Achieved the highest number of automated test contributions across all product pods, supporting a Defect Detection Rate above 85%
  • Enhanced GitHub Actions workflows to handle serial and parallel test execution, significantly improving the performance and reliability of our CI pipeline.
  • Designed and implemented performance testing initiative for TPRM; defined SLAs for endpoint latency and implemented K6 for slowest endpoints.
  • Contributed to launching the i18n testing initiative, enabling our product to support global markets.
  • Implemented automation across different areas, including e2e, API, i18n, Performance, and Accessibility tests.
  • Owned the quality strategy for high-complexity integrations and cross-module initiatives, ensuring data integrity across all connected systems.
  • Identified and resolved critical architectural gaps in RBAC/Permissions models and LaunchDarkly feature flag logic preventing production incidents.
  • Mentored junior QA engineers and conducted internal knowledge-sharing sessions to elevate the team's expertise in AI-augmented test automation strategies.
Quality Assurance ProcessesContinuous Integration and Continuous Delivery (CI/CD)GithubSoft SkillsGitHub CopilotGit+32

QA Automation Engineer

Promoted

Dec 2022Jan 2024 · 1 yr 1 mo · United States · Remote

  • Architected and implemented the TPRM E2E and API automation suite from scratch in Playwright.
  • Contributed to the migration of 1,000+ tests from WebdriverIO to Playwright.
  • Contributed to automating 63% of our test gaps, saving over 53 hours in each release.
  • Supported our shift-left testing strategy, allowing for "In-QA" to "Rework" cycles that caught bugs before code freeze, contributing to a >85% Defect Detection Percentage.
  • Participated in developer code reviews to ensure features had appropriate unit/integration coverage, pushing quality checks earlier in the pipeline.
  • Added Ember acceptance tests to cover Accessibility gaps and performed manual accessibility audits using axe DevTools.
Quality Assurance ProcessesContinuous Integration and Continuous Delivery (CI/CD)GithubSoft SkillsGitHTML+26

QA Engineer

Apr 2022Dec 2022 · 8 mos · United States · Remote

  • Designed comprehensive test plans and test cases for the MVP launch of TPRM module
  • Became the primary point of contact for triaging production bugs and defining reproduction steps for engineering.
  • Managed regression runs and provided final Go/No-Go decisions for feature releases, consistently preventing major blockers from reaching production.
  • Participated in project planning and estimation to ensure testing is appropriately scoped and prioritized.
Test CasesSoft SkillsMicrosoft PowerBIRegression TestingSlackManual Testing+4

Flatlay inc.

QA Automation Engineer

Jan 2021Mar 2022 · 1 yr 2 mos · United States · Remote

  • After joining the Flatlay team, the challenges and daily requirements of my role were entirely based in testing the core functionality of the web-application as well as UI/UX. In my day to day I primarily focused on:
  • Analyzing client requirements to ensure they are accurately implemented
  • Write easy-to-follow bug reports using videos or images, tracking defects through JIRA
  • Performing smoke, functional, boundary, integration and user interface testing of web-based and mobile applications
  • Performing testing of iOS native app
  • Experience in RESTful web service testing and validating JSON formatted data
  • Test case automation of the web based application by utilizing Cypress framework
  • Checkout code from GIT repository and compile builds locally
  • Test case development and maintenance of the test procedures through QASE
  • Performing manual user testing of the iOS application through TestFlight
  • Web services testing using Postman
  • Writing SQL queries to perform backend data validation
  • Troubleshooting and debugging core functionality
  • Support releases of new features to production
Quality Assurance ProcessesTest CasesGithubTestFlightSoft SkillsGit+31

Codemify

Designer

Mar 2020Dec 2020 · 9 mos · United States · Remote

  • Codemify is a QA bootcamp which provides highest quality education and coaching programs that help people to start or grow on their career in IT as QA Engineers.
  • When working for Codemify I have:
  • Developed whole new branding of the company;
  • Created content for social networks (Instagram, Youtube, Facebook);
  • Developed a new website, tested it and fixed bugs (codemify.com);
  • Worked directly with Founders to develop and implement new marketing strategy;
  • Created the presentations for lessons of the entire QA Manual and Automation course;
  • Set up newsletter structure and design.
Soft SkillsHTMLAnalytical SkillsSoftware Quality AssuranceCritical ThinkingManual Testing+9

Smit empreendimentos imobiliários ltda.

Founder & Construction Engineer

Apr 2016Mar 2020 · 3 yrs 11 mos · Porto Alegre e Região, Brasil · On-site

  • Led end-to-end operations of a real estate development company, combining technical expertise with business acumen to deliver successful projects.
  • Directed on-site construction activities, ensuring compliance with specifications, quality standards, and timelines. Managed project schedules, resource allocation, and contractor coordination.
  • Performed cost analysis, budget forecasting, and financial projections to optimize project profitability.
  • Developed and executed sales and marketing strategies in collaboration with partner companies to drive product positioning and revenue growth.
Soft SkillsTeam managementAnalytical SkillsLeadershipCritical ThinkingInterpersonal Skills+4

Education

Unisinos

Bachelor of Engineering (B.Eng.) — Civil Engineering

Jan 2010Jan 2015

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