SDET Engineer at OpenFX

<p><strong>About Us</strong></p> <p>OpenFX is on a mission to move money as freely as data, unrestricted by time zones, banking hours, or legacy systems. We are building the infrastructure that will power the next generation of cross-border payment systems for institutions. The team's execution has been exceptional, and we're scaling at a remarkable pace. Our stellar early team comes with experience in companies like J.P. Morgan, Goldman Sachs, FalconX, Paypal, Affirm, Polygon, Kraken, Nium &amp; others. We're backed by Accel, Faction, NfX, Accomplice, and other top-tier investors.</p> <p><strong>Role Overview</strong></p> <p>As our systems grow in complexity and volume, we need an SDET Engineer who can go beyond writing scripts to architecting test frameworks that are scalable, stable, and AI-leveraged. You will ensure that our high-velocity deployment pipeline—moving real money—remains robust while reducing manual intervention to near zero. This is a hands-on, high-impact role where you will directly strengthen the reliability of our financial infrastructure.</p> <p><strong>Key Responsibilities</strong></p> <ul> <li>Design and optimize high-performance automation frameworks using Java/RestAssured and JS/Playwright</li> <li>Own the integration of tests into CI/CD pipelines and manage containerized test environments (Docker/Kubernetes)</li> <li>Architect load and stress testing suites using JMeter or k6 to simulate high-traffic financial events</li> <li>Establish patterns for the team to use AI (Copilot, LLMs) for synthetic data generation and automated Root Cause Analysis</li> <li>Develop complex test scenarios for transaction idempotency, ledger consistency, and financial calculation validation</li> <li>Provide technical guidance and code reviews to ensure high standards of clean, reliable code</li> <li>Drive 100% automation coverage of critical-path financial flows within the same sprint</li> <li>Achieve 40%+ reduction in regression time through parallelization and AI-assisted scripting</li> </ul> <p><strong>What We're Looking For</strong></p> <p><em>Required</em></p> <ul> <li>3 to 7 years of experience in SDET or Backend Development roles</li> <li>Expert proficiency in Java, JavaScript, or Python</li> <li>Proven experience building or significantly extending automation frameworks (RestAssured/Playwright)</li> <li>Strong understanding of relational databases (SQL) and API security (OAuth, HMAC signing)</li> <li>Expert knowledge of Maven, TestNG, and Git (complex branching/merging)</li> <li>Strong fundamentals in Data Structures and Algorithms</li> </ul> <p><em>Preferred</em></p> <ul> <li>Deep familiarity with AWS (S3, CloudWatch, EKS)</li> <li>Experience managing test runners in Docker or Kubernetes</li> <li>Hands-on experience with JMeter or k6 for load testing</li> <li>Proactive use of AI tools to increase engineering velocity</li> </ul> <p><strong>What We Offer</strong></p> <ul> <li>Competitive salary and benefits package.</li> <li>Equity in a rapidly growing company.</li> <li>Opportunity to work in a fast-paced startup at the forefront of fintech innovation.</li> <li>Opportunity to make a significant impact on global financial infrastructure.</li> <li>Collaborative work culture with emphasis on personal and professional growth.</li> </ul> <p>We are committed to building a diverse and inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.</p>