At Arrow Fin, we don’t build typical apps, we support

the construction of high-frequency, low-latency trading tools directly

connected to the Chicago Mercantile Exchange (CME). We are looking for a sharp, detail-obsessed QA Engineer to own the quality of our cross-platform trading

ecosystem.

If you thrive on inspecting Web Sockets, testing
real-time financial data, and ensuring flawless user execution when real money

is on the line, this is your zone.

What You’ll

Be Doing:

- Mobile-First Testing: Lead functional, regression, and edge-case testing on native iOS & Android apps. You’ll validate real-time streaming charts, order execution speed, and push notifications.
- Cross-Platform Parity: Perform cross-browser and multi-device validation to ensure seamless state synchronization (e.g., initiating an order on Web and monitoring it live on Mobile).
- Fintech & Risk Logic Validation: Test critical financial engine workflows: order types (Market, Limit, Stop), margin exposure calculations, leverage, and real-time P&L; updates.
- Deep Network Inspection: Intercept and inspect REST APIs, Web Sockets, and payload data using Postman, Charles Proxy,



and Dev Tools.
- Agile Defect Management: Write crystal-clear, high-context bug reports in Jira (with logs, screen recordings, and precise reproduction steps) and collaborate actively in sprint ceremonies.

What We Are Looking For:

- English Level: B2 / Upper-Intermediate (written and spoken) to collaborate smoothly with international team members.
- Experience: 3+ years of hands-on QA experience, with a heavy emphasis on native mobile applications (iOS/Android) and web dashboards.
- Technical Toolkit: Proficiency with Chrome Dev Tools, Postman, Charles Proxy / Fiddler, Xcode, and Android Logcat.
- Methodologies: Strong grasp of boundary value analysis, exploratory testing, REST APIs/Web Sockets, and Agile/Scrum practices.
- Mindset: Proactive, analytical, and uncompromising when it comes to software reliability and user experience.
- Fintech / Trading Domain Knowledge: Solid understanding of financial markets, derivatives, trading mechanics, or risk management concepts (Nice to have).

📌 QA Engineer (Mobile & Web) – (Contractor)?
🏢 ArrowFin Colombia
📍 Medellín