vinterman

Work

Projects.

One on the desk, the rest in the archive.

Prediction markets · full-time · 2025 — now

Limitless

Product Engineer

  1. Ships features end to end: idea, design, code, tests, release, support
  2. Fixes bugs across frontend and backend
  3. Daily AI work: custom harnesses and pipelines, knowledge base, skills, debugging and monitoring, release gates
  4. Manual and automated tests: new features, custom trading core (CLOB, AMM, neg-risk, ladder markets, RFQ, parlays)
  5. Iterates test automation (frontend, backend, integration, load) for several production releases a day
Folder 1 of 5

Patented security protocol · full-time · 2024 — 2025

Skipr

QA & AQA Lead

  1. Built QA from zero: process, docs, dashboards, automation, QA team hiring
  2. E2E automation: web (Playwright), mobile (Appium), API (TS + Axios), load (k6 + Artillery), GitHub Actions CI/CD
  3. Real iOS and Android device farms (LambdaTest), flaky-test hunting, scheduled regression with alerting
  4. Security for gov and enterprise clients: VPN leak tests (DNS, IP, traffic), no-data-collection checks, SAST; quality demos and reports for investors
  5. Wrote features and fixed bugs in product code (Node, Flutter)
Folder 2 of 5

Betting · full-time · 2022 — 2024

Turbo Stars

Senior QA & AQA Engineer

  1. Organised QA on a microservices platform with dense math logic
  2. UI framework (Playwright) and API framework (TypeScript, Axios, Chai), GitLab CI/CD
  3. API testing, manual (Postman, Swagger) and automated (own framework); load tests on critical scenarios (k6)
  4. Jira productivity dashboards and charts for a big team
  5. Onboarded and mentored 2 QA engineers
Folder 3 of 5

DeFi · full-time · 2020 — 2022

Web33

AQA Engineer

  1. Built test automation from zero for 15+ client projects
  2. Web (Selenium) and mobile (Appium, Android emulators) suites for client DeFi apps
  3. Load and stress tests against bot traffic and multi-accounting: Gatling (API), Artillery (WebSockets)
  4. Self-hosted test pipeline: Jenkins → DockerHub → Helm → Argo CD → Kubernetes
  5. Monitoring and support of delivered client projects: Prometheus, Grafana, alerts
Folder 4 of 5

Freelance · 2019 — 2021

Crypto projects

Builder, node operator, tester

  1. Testnet bug hunting and reports for early-stage projects
  2. Ran early validator and full nodes on own and rented hardware
  3. Built and ran own servers: overclocking, uptime, repairs
  4. Wrote autotests for projects, whale-wallet checkers and trading bots: spot, futures, cross-exchange, copy-trading
Folder 5 of 5

  • Prediction markets · full-time

    Product Engineer

    1. Ships features end to end: idea, design, code, tests, release, support
    2. Fixes bugs across frontend and backend
    3. Daily AI work: custom harnesses and pipelines, knowledge base, skills, debugging and monitoring, release gates
    4. Manual and automated tests: new features, custom trading core (CLOB, AMM, neg-risk, ladder markets, RFQ, parlays)
    5. Iterates test automation (frontend, backend, integration, load) for several production releases a day

  • Patented security protocol · full-time

    QA & AQA Lead

    1. Built QA from zero: process, docs, dashboards, automation, QA team hiring
    2. E2E automation: web (Playwright), mobile (Appium), API (TS + Axios), load (k6 + Artillery), GitHub Actions CI/CD
    3. Real iOS and Android device farms (LambdaTest), flaky-test hunting, scheduled regression with alerting
    4. Security for gov and enterprise clients: VPN leak tests (DNS, IP, traffic), no-data-collection checks, SAST; quality demos and reports for investors
    5. Wrote features and fixed bugs in product code (Node, Flutter)

  • Betting · full-time

    Senior QA & AQA Engineer

    1. Organised QA on a microservices platform with dense math logic
    2. UI framework (Playwright) and API framework (TypeScript, Axios, Chai), GitLab CI/CD
    3. API testing, manual (Postman, Swagger) and automated (own framework); load tests on critical scenarios (k6)
    4. Jira productivity dashboards and charts for a big team
    5. Onboarded and mentored 2 QA engineers

  • DeFi · full-time

    AQA Engineer

    1. Built test automation from zero for 15+ client projects
    2. Web (Selenium) and mobile (Appium, Android emulators) suites for client DeFi apps
    3. Load and stress tests against bot traffic and multi-accounting: Gatling (API), Artillery (WebSockets)
    4. Self-hosted test pipeline: Jenkins → DockerHub → Helm → Argo CD → Kubernetes
    5. Monitoring and support of delivered client projects: Prometheus, Grafana, alerts

  • Freelance

    Builder, node operator, tester

    1. Testnet bug hunting and reports for early-stage projects
    2. Ran early validator and full nodes on own and rented hardware
    3. Built and ran own servers: overclocking, uptime, repairs
    4. Wrote autotests for projects, whale-wallet checkers and trading bots: spot, futures, cross-exchange, copy-trading