Senior Software Engineer in San Francisco, California at TestBox (Buffer4)

About the role We are hiring a Senior Software Engineer in San Francisco to own major features and services, raise the technical bar, and mentor engineers across the team. What you will do - Lead design reviews and set technical direction for your area - Build and evolve services with reliability and performance in mind - Mentor engineers through pairing and code review - Drive improvements to developer experience and tooling Must have - 6+ years of software engineering experience - Ownership of major features or services in production - Depth in at least one modern backend or frontend stack Nice to have - Experience in high-growth B2B SaaS environments Location: San Francisco, CA (hybrid). Apply through our career site with your resume.