Jobs / United States / Klaviyo INC
Software Engineer II, Test Frameworks & Tooling
Klaviyo INC · 🇺🇸 Boston, MA
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 46 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 10 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Klaviyo INC paid sponsored hires in similar roles30 certified filings for “Senior Software Engineer” (Software Developers) in MA: $131k–$178k, median $155k. Most were filed at wage level III (37%) — 3 lottery entries, ≈46% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Klaviyo INC
The US Department of Labor certified 46 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 10 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Klaviyo INC →
About the role
At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you’re a close but not exact match with the description, we hope you’ll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. Why You Should Join the Test Frameworks and Tooling Team Engineering confidence is our primary product. We are not testers, but rather infrastructure engineers building the sophisticated automation and CI/CD frameworks that make deploying to production a non-event. Our mission is to architect the systems, repository standards, and automated guardrails that empower every engineer in the company to ship at terminal velocity with total confidence. By building the foundational tools that guarantee production readiness, you will play a direct role in driving Sev-1 incidents toward zero and ensuring that our organization can move fast without the fear of breaking things. What You'll Achieve: Key Responsibilities As a core member of the team, you will own the execution of critical projects and contribute to the evolution of our testing ecosystem: • Own and Enhance Frameworks: Take ownership of our integration and E2E testing frameworks across both backend and frontend stacks. You will ensure they are fast, reliable, and easy for other teams to adopt. • CI/CD Integration: Contribute to how we execute tests within our CI system. You will focus on optimizing feedback loops so engineers know exactly where they stand in minutes. • Establish Standards: Help define and implement general rules for our repositories, ensuring consistency in how unit tests are written and how code quality is measured. • Scalable Feature & Coverage Contribution: Actively develop new tools that simplify complex testing scenarios while identifying and backfilling critical testing gaps at scale. You will build systems for data mocking and service isolation that ensure high-fidelity coverage across our most complex application flows. • AI-Driven Quality Innovation: Help lead the charge in leveraging AI to accelerate our testing lifecycle. You will explore and implement AI-powered tools for automated regression detection, flaky test analysis, and intelligent test generation to decrease time-to-completion for features. • Collaborative Problem Solving: Partner with feature teams to troubleshoot flaky tests and identify gaps in our current coverage, making proactive suggestions to improve our overall safety net. • Operational Excellence: Monitor the health of our test suites and CI pipelines, taking pride in maintaining a stable and performant environment for the entire engineering organization. What Makes This Role Exciting • Direct Impact on Stability: Your work is the primary line of defense against Sev 1 incidents. When the platform stays up and customers stay happy, it is because of the systems you help maintain. • Full-Stack Visibility: Because you own the E2E suite, you will gain a deep understanding of how our entire ecosystem fits together, from frontend UI components to complex backend microservices. • Autonomy and Growth: While we provide the vision, you provide the execution. You will have the space to own your work end-to-end, propose technical improvements, and see your suggestions implemented company-wide. • High-Leverage Work: You are not just building one feature for one customer. You are building the tools that hundreds of your fellow engineers use every single day to do their jobs better. Who You Are: • Analytical Probl