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David Martínez
ES

In detail

What I did in each role, how I use AI in my QA work, the full skill list, and my education.

The roles, one by one

  • Banco Aliadonow

    QA Analyst · via Smart Consulting LA2026 — now

    • Designing and running tests against the API services that expose the AS400 core banking functions, using Postman to check the response code, the payload structure, and its contents.
    • Cross-checking the data: comparing the JSON response against what actually landed in DB2 on AS400, with SQL verification queries.
    • Writing test cases for core modules, covering happy paths, negative paths, and edge cases.
    • Working in Scrum: joining the team ceremonies, refining user stories, and reporting and tracking issues inside the sprint.
  • Multibank

    QA Analyst · via Smart Business Solutions2022 — 2025

    • Owning the test documentation, designing and running cases, reporting issues, and following them through to close.
    • Delivering the e-invoicing project for Core MB (AS400) and PREMIUM MB Seguros.
    • Rolling out improvements and fixes across the bank's applications (AS400, HiTech, ASICOM, and Tekins), and validating online banking modules.
    • Running walkthrough and testing sessions with users and the departments involved, plus internal training on what we shipped.
    • Monitoring production after each release to make sure every deployment held.
    • Taking part in the project to migrate the bank's legacy servers.
  • Cable Onda (Tigo) y Banesco

    QA Analyst · via Infosgroup2017 — 2019

    • Gathering requirements with the business analyst to build the test matrices and validate every scenario in each project.
    • Running internal, user, and production testing, on applications and on physical devices.
    • Validating the Titan system (Cable Onda and Tigo), and core banking and credit cards (Banesco).
    • Supporting other teams, training branch staff, and onboarding new members of the team.

How I use AI in QA

AI is part of how I work, and a person checks the result every time.

  • Designing test cases and matrices from user stories and functional docs, including the negative paths and edge cases that usually fall outside the first scope.

  • Generating and reviewing the SQL validation queries against the core tables, to confirm that what the service answers is exactly what got written to the database.

  • Comparing JSON payloads side by side — request, response, and database record — to catch missing fields, wrong data types, and transformations nobody documented.

  • Writing technical docs, issue reports and test evidence, and building the validation assertions in Postman.

When the data can't leave the environment, I work with local models through Ollama.

Technical skills

  • Testing and QA

    Test matrices and cases · Functional testing · Integration · Regression · User acceptance · Happy, negative, and edge cases · Issue reporting and tracking · Production testing · Scrum

  • API testing

    Postman · Collections and environments · Variables and scripts · Response assertions · REST services · JSON ↔ database cross-checking

  • Databases

    SQL · Oracle SQL · DB2 on AS400 · MySQL · PostgreSQL (Supabase) · Normalization 1NF–3NF · Stored functions · Triggers and procedures · JOINs and aggregation

  • Core banking

    AS400 · HiTech · E-invoicing · Online banking · Credit cards · KYC and onboarding · GoAnywhere

  • Development

    React 18 · TypeScript · Vite · Tailwind CSS · Supabase · Python · Flask · Java (fundamentals) · Git and GitHub · Vercel

  • Artificial intelligence

    Claude (Anthropic) · Ollama with Qwen3 · Groq (Llama 3.1) · Google Gemini · Whisper · edge-tts · Prompt design · Graceful degradation

  • Systems and networks

    Linux desktop and server · Windows · PowerShell · DHCP · DNS · NTP · Active Directory

Education

  • B.S. in Computer Networks

    Universidad Tecnológica de Panamácoursework 2026

    Coursework finished in 2026. Only the graduation ceremony is left.

  • Self-directed learning, put to use

    Ongoing

    API testing with Postman over core banking, KYC and onboarding flows, checked against DB2. Modern web development with React, TypeScript and Supabase. Applied AI, including language models running locally and in the cloud.

  • Studying now no hands-on yet

    In progress

    Collection automation with Newman. CI/CD with GitLab CI and Jenkins. SoapUI. SOAP, GraphQL, gRPC, WebSockets and Webhooks — I know the concepts and how you would test them, but I have not shipped with them yet.

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