QA Engineer, Trading Systems

What You'll Do

Test the full order lifecycle: signal generation, risk checks, order routing, fill confirmation, and position tracking

Validate risk management logic: position sizing, daily loss limits, drawdown stops, and margin safeguards, including edge cases like non-USD-quoted symbols and correlated exposure

Test failure scenarios explicitly: rejected orders, partial fills, requotes, slippage, disconnects, and stale prices

Verify reconciliation logic between bot-held positions and broker/exchange records

Test across multiple venues (MT4/MT5, crypto exchange APIs, equity/F&O broker APIs) and catch behaviour that doesn't generalise across them

Build and maintain automated test suites for money-touching code, including unit tests for risk calculations

Test monitoring and alerting: confirm the right severity triggers the right alert, and that silent failures don't slip through

Validate ML model deployments: check that walk-forward or purged cross-validation was used correctly, and that shadow to small-allocation to full-allocation rollouts are gated properly

Test server and terminal recovery scenarios: restarts, reconnections, and failover, confirming positions are reconciled before new trading resumes

Log clear, reproducible bugs with steps, expected versus actual, and evidence

Own the release checklist and sign off before anything ships to a live trading account

Must-Haves

Manual testing fundamentals: test cases, regression suites, bug reporting

Hands-on automation experience (Playwright, Cypress, Selenium, or Python-based test frameworks like pytest)

API testing and comfort reading JSON responses; experience with Postman or similar

Basic SQL for verifying trade and position data

Comfort with financial/numerical edge cases: rounding, lot sizing, tick values, and precision errors

Ability to work directly with developers rather than throwing bugs over a wall

A conservative, sceptical mindset: comfortable blocking a release when something is ambiguous rather than assuming it's fine

Good to Have

Experience testing trading systems, fintech, or other money-touching applications

Familiarity with MT4/MT5, crypto exchange APIs, or broker APIs

Understanding of basic risk management concepts (position sizing, stop losses, margin, leverage)

Experience testing ML model outputs where results aren't identical on every run

Running tests in a CI pipeline on every merge

Basic performance or load testing, especially around latency-sensitive execution paths

Share Your Resume

Interested candidates can share their resume with us at: admin@ajems.com