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OpenFX is building infrastructure to enable cross-border payments at scale, moving money as freely as data across time zones and legacy banking systems. The company is backed by top-tier investors (Accel, Faction, NfX) and led by a team with experience from JP Morgan, Goldman Sachs, FalconX, PayPal, Affirm, and other leading fintech/crypto firms.
As an SDET Engineer, you will architect and own test automation frameworks that ensure the reliability of OpenFX's high-velocity deployment pipeline handling real financial transactions. This is a hands-on, high-impact role focused on reducing manual testing and enabling rapid, safe deployments.
Key responsibilities include:
- Design and optimize high-performance automation frameworks using Java/RestAssured and JavaScript/Playwright
- Own integration of tests into CI/CD pipelines and manage containerized test environments (Docker/Kubernetes)
- Architect load and stress testing suites using JMeter or k6 to simulate high-traffic financial events
- Establish patterns for leveraging AI tools (Copilot, LLMs) for synthetic data generation and automated root cause analysis
- Develop complex test scenarios for transaction idempotency, ledger consistency, and financial calculation validation
- Provide technical guidance and code reviews to maintain high standards
- Drive 100% automation coverage of critical-path financial flows
- Achieve 40%+ reduction in regression time through parallelization and AI-assisted scripting
Required qualifications: 3–7 years in SDET or backend development roles; expert proficiency in Java, JavaScript, or Python; proven experience building or extending automation frameworks (RestAssured/Playwright); strong understanding of relational databases (SQL) and API security (OAuth, HMAC signing); expert knowledge of Maven, TestNG, and Git; strong fundamentals in data structures and algorithms.
Preferred: deep familiarity with AWS (S3, CloudWatch, EKS); experience managing test runners in Docker or Kubernetes; hands-on experience with JMeter or k6; proactive use of AI tools to increase engineering velocity.
