Mid - Senior Software Engineer (SDET)

Role Overview

Mid–Senior Software Engineer (SDET) at Sphere Labs, focused on owning quality and reliability across the release pipeline for cross-border payments/settlement infrastructure.

Responsibilities

• Own the release process: uphold release criteria, coordinate with engineering, and decide whether code is ready to ship.
• Shape the CI/CD pipeline: define gates, trustworthy signals, and tooling from commit to deploy.
• Create thorough automated test cases from product/engineering acceptance criteria, covering happy paths, edge cases, and failure modes.
• Continuously execute tests as the platform grows to catch regressions and surface bugs before customers.
• Improve platform testability with engineering (test isolation interfaces, clean seams between components, verification-friendly system design).
• Build and maintain scalable automated test suites to reduce manual testing and make quality part of the delivery pipeline.
• Raise the engineering testing bar via code review, documentation, pairing, and practical guidance on testing at each layer.

Requirements

• Strong programming fundamentals; can write clean, maintainable test code and contribute to the codebase.
• Experience owning or significantly contributing to releases and understanding failure modes of weak release processes.
• Experience designing/evolving CI/CD pipelines (gates, automation, fast builds, good signal-to-noise).
• Familiarity with GitHub Actions (or similar) is a plus.
• Automated testing experience across unit, integration, and end-to-end layers.
• TypeScript familiarity is a plus.
• Strong analytical skills to break down user journeys into the most relevant cases.
• Excellent written communication (test plans, precise bug reports, clear explanations).
• Self-directed and systematic: can work asynchronously across time zones and manage priorities.

Nice-to-haves

• Familiarity with GCP (or similar cloud platforms).
• Experience testing API-driven or payments products; exposure to KYC/KYB flows, webhooks, or compliance domains.

Additional Context

• The company operates as a fully remote, global team based in the United States (location listed as US).