Klaviyo
Software Engineer II, Test Frameworks & Tooling
Boston, MA · Mid
Stay score
odds of building a lasting career here
Sponsors, but it's cap-subject — you still face the weighted lottery (~45% per draw at Level III). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
$22,237 more — $138,237 — moves this role to Level II and 2 lottery entries. That figure is inside the range the employer already advertised.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $138,237 would place this position at wage Level II. That figure is within the posted range, and I'd like to target it. This role classifies under "Software Developers" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Software Developers (15-1252) · Boston-Cambridge-Newton, MA-NH. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
Employer immigration record
from this employer's Department of Labor filings
Green-card filing pattern in this occupation
Green-card follow-through: 79%
Files H-1B transfers
Sourced from Department of Labor LCA, PERM and prevailing-wage disclosure data. Employer matching is by name, so figures may be split across an employer's legal entities. Absence of a filing means none appears in our copy of the data, not that none exists.
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About the role
- 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?
- Why You Should Join the Test Frameworks and Tooling Team Engineering confidence is our primary product.
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.
- 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.
- 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.
- 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.
- Visit klaviyo.com/careers to see how we empower creators to own their own destiny.
- We are not testers, but rather infrastructure engineers building the sophisticated automation and CI/CD frameworks that make deploying to production a non-event.
- Own and Enhance Frameworks:
- Help define and implement general rules for our repositories, ensuring consistency in how unit tests are written and how code quality is measured.
Requirements
- Analytical Problem Solver: You have 2+ years of software engineering experience with a focus on writing clean, maintainable code.
- Technical Generalist: You are comfortable working across the stack.
- Whether it is debugging a React component in an E2E test or optimizing a Python integration test, you are ready to dive in.
- AI-Forward Thinker: You are excited about the intersection of AI and Software Quality.
- You are eager to help us leverage AI to automate test generation, identify flaky patterns, and accelerate the overall development lifecycle.
- CI/CD Familiarity: You have experience with, or a strong desire to learn, CI/CD tools and understand how automated testing fits into a modern deployment pipeline.
Compensation
- Our salary range reflects the cost of labor across various U.S. geographic markets.
Company info
- At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day.
- 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.
- You understand that testing is a fundamental part of the development lifecycle, not an afterthought. - Technical Generalist: You are comfortable working across the stack.
- 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.
Visa & Work Authorization
- We do not discriminate on the basis of race, ethnicity, citizenship, national origin, color, religion or religious creed, age, sex (including pregnancy), gender identity, sexual orientation, physical or mental disability
This listing is sourced directly from Klaviyo's careers page and normalized into a canonical job model.