Senior SDET (Fully Remote)

• Test resilience and correctness of distributed backend systems for account provisioning.
• Execute approved tracer/replay scenarios against staging endpoints.
• Document observable lifecycle and downstream state behavior.

Key Responsibilities:

• Validate API correctness, consistency, and failure handling across services.
• Investigate system behavior under malformed inputs and capture evidence.
• Compare expected versus observed API behavior in controlled replay suites.

Qualifications:

• 5-8+ years testing distributed systems and API behavior.
• Experience with payload tampering, fuzzing, and adversarial testing.
• Strong documentation and evidence capture discipline.

Welo Data is a global AI data company, part of Welocalize, delivering high-quality data to train AI systems. It has a diverse community of 500,000+ contributors across 100+ countries, offering flexible and limitless work opportunities.