Backend Engineer Jobs at Klaviyo with Visa Sponsorship
Klaviyo hires Backend Engineers to build the data infrastructure and APIs powering its marketing platform. The company has an established track record of sponsoring work visas for engineering talent, making it a realistic target if you're pursuing H-1B or employment-based Green Card pathways.
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Get Access To All JobsINTRODUCTION
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.
ABOUT THE JOB
Why You Should Join the Onboarding Team
The Product Expansion / Activation team at Klaviyo is focused on improving the early experience of Klaviyo for new customers. We work diligently to improve the rate at which customers are successfully setting up their Klaviyo account and gaining value from the platform. Engineers on the team use data to discover opportunities for improvement, implement A/B tests to validate ideas, and work across the product to iteratively improve UX and reduce friction for new customers. We are looking for great generalist software engineers with a passion for the experience-layer that have an interest in or experience with growing a user-base and building a great customer onboarding pipeline and experience.
HOW YOU WILL MAKE A DIFFERENCE
- In this role, you will implement user-experience improvements across the Klaviyo product, especially in areas that affect new customers.
- You will design and implement A/B tests to validate ideas, and interpret the results of these tests to inform iterative improvements to the product.
- You will collaborate with marketing, data-science, sales, and engineering teams to discover areas for improvement, as well as engaging with customers directly to learn more about how we can better serve their needs.
- You will help us improve our experimentation and development processes, and mentor other engineers on the team.
- You will clearly define the goal, constraints, and context for AI agents, while remaining responsible for the correctness of the implementation, with a focus on security, performance, and maintainability.
- Working from our Boston HQ at least three days a week.
WHO YOU ARE
- Have a background in full stack software engineering with experience building and improving products with an emphasis on user-facing features, along with the APIs and infrastructure to support them.
- Passionate about growing and improving a product on a daily basis using a data driven mindset.
- Experienced with A/B Testing products with metric based goals to improve user experience and customer acquisition and success (nice to have).
- Demonstrated ability and success in using AI-driven software delivery practices and methods and/or a willingness and excitement to learn.
- Thrives in an entrepreneurial type environment that is fast paced, customer focused, and strategic.
TECHNOLOGIES WE USE
HTML, TypeScript, JavaScript, React
Python, Django
MySQL, Cassandra, RabbitMQ, Redis
Amazon Web Services (EC2, RDS, Aurora, etc.), Terraform, Ansible, Packer, and other DevOps tools
COMPENSATION
- Base Pay Range For US Locations: $116,000—$174,000 USD
Our salary range reflects the cost of labor across various U.S. geographic markets. The range displayed below reflects the minimum and maximum target salaries for the position across all our US locations. The base salary offered for this position is determined by several factors, including the applicant’s job-related skills, relevant experience, education or training, and work location.
In addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process.
This role may require up to 10% travel for purposes such as new hire onboarding, client or partner work if applicable, team meetings, and industry events. Travel is coordinated in advance.
GET TO KNOW KLAVIYO
We’re Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny by making first-party data accessible and actionable like never before. We see limitless potential for the technology we’re developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators—ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you’re ready to do the best work of your career, where you’ll be welcomed as your whole self from day one and supported with generous benefits, we hope you’ll join us.
AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human-in-the-loop). We provide accommodations as needed.
By participating in Klaviyo’s interview process, you acknowledge that you have read, understood, and will adhere to our Guidelines for using AI in the Klaviyo interview Process. For more information about how we process your personal data, see our Job Applicant Privacy Notice.
Klaviyo is committed to a policy of equal opportunity and non-discrimination. 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, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law.
INTRODUCTION
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.
ABOUT THE JOB
Why You Should Join the Onboarding Team
The Product Expansion / Activation team at Klaviyo is focused on improving the early experience of Klaviyo for new customers. We work diligently to improve the rate at which customers are successfully setting up their Klaviyo account and gaining value from the platform. Engineers on the team use data to discover opportunities for improvement, implement A/B tests to validate ideas, and work across the product to iteratively improve UX and reduce friction for new customers. We are looking for great generalist software engineers with a passion for the experience-layer that have an interest in or experience with growing a user-base and building a great customer onboarding pipeline and experience.
HOW YOU WILL MAKE A DIFFERENCE
- In this role, you will implement user-experience improvements across the Klaviyo product, especially in areas that affect new customers.
- You will design and implement A/B tests to validate ideas, and interpret the results of these tests to inform iterative improvements to the product.
- You will collaborate with marketing, data-science, sales, and engineering teams to discover areas for improvement, as well as engaging with customers directly to learn more about how we can better serve their needs.
- You will help us improve our experimentation and development processes, and mentor other engineers on the team.
- You will clearly define the goal, constraints, and context for AI agents, while remaining responsible for the correctness of the implementation, with a focus on security, performance, and maintainability.
- Working from our Boston HQ at least three days a week.
WHO YOU ARE
- Have a background in full stack software engineering with experience building and improving products with an emphasis on user-facing features, along with the APIs and infrastructure to support them.
- Passionate about growing and improving a product on a daily basis using a data driven mindset.
- Experienced with A/B Testing products with metric based goals to improve user experience and customer acquisition and success (nice to have).
- Demonstrated ability and success in using AI-driven software delivery practices and methods and/or a willingness and excitement to learn.
- Thrives in an entrepreneurial type environment that is fast paced, customer focused, and strategic.
TECHNOLOGIES WE USE
HTML, TypeScript, JavaScript, React
Python, Django
MySQL, Cassandra, RabbitMQ, Redis
Amazon Web Services (EC2, RDS, Aurora, etc.), Terraform, Ansible, Packer, and other DevOps tools
COMPENSATION
- Base Pay Range For US Locations: $116,000—$174,000 USD
Our salary range reflects the cost of labor across various U.S. geographic markets. The range displayed below reflects the minimum and maximum target salaries for the position across all our US locations. The base salary offered for this position is determined by several factors, including the applicant’s job-related skills, relevant experience, education or training, and work location.
In addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process.
This role may require up to 10% travel for purposes such as new hire onboarding, client or partner work if applicable, team meetings, and industry events. Travel is coordinated in advance.
GET TO KNOW KLAVIYO
We’re Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny by making first-party data accessible and actionable like never before. We see limitless potential for the technology we’re developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators—ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you’re ready to do the best work of your career, where you’ll be welcomed as your whole self from day one and supported with generous benefits, we hope you’ll join us.
AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human-in-the-loop). We provide accommodations as needed.
By participating in Klaviyo’s interview process, you acknowledge that you have read, understood, and will adhere to our Guidelines for using AI in the Klaviyo interview Process. For more information about how we process your personal data, see our Job Applicant Privacy Notice.
Klaviyo is committed to a policy of equal opportunity and non-discrimination. 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, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law.
See all 48+ Backend Engineer at Klaviyo jobs
Sign up for free to unlock all listings, filter by visa type, and get alerts for new Backend Engineer at Klaviyo roles.
Get Access To All JobsTips for Finding Backend Engineer Jobs at Klaviyo Jobs
Align your portfolio to Klaviyo's stack
Klaviyo's backend runs on Python and handles high-throughput data pipelines at scale. Projects demonstrating distributed systems experience, message queues, or event-driven architecture directly match what their engineering teams evaluate in technical screens.
Target roles with explicit sponsorship language
Not every Backend Engineer posting at Klaviyo lists visa sponsorship equally prominently. Filter for roles where sponsorship is confirmed rather than implied, so you avoid investing in an interview loop that stalls at the offer stage.
Prepare your degree equivalency documentation early
H-1B specialty occupation requires a directly related bachelor's degree or equivalent. If your credential is from outside the U.S., get a NACES-member evaluation before your offer arrives, not after, so the I-129 filing isn't delayed waiting on paperwork.
Understand Klaviyo's PERM pathway for engineers
Klaviyo sponsors EB-2 and EB-3 Green Cards, which typically involve a PERM labor certification filed with DOL. Backend Engineers should ask during offer negotiation when the company typically initiates PERM and whether it follows a standard promotion-track timeline.
Time your application around the H-1B cap cycle
H-1B cap registrations open in March for an October 1 start date. If you're interviewing at Klaviyo in late winter, push to complete your loop by February so your employer's legal team can register you before the USCIS window closes.
Use Migrate Mate to find open Backend Engineer roles
Identifying which Klaviyo Backend Engineer postings are actively open and sponsorship-eligible is the starting point. Migrate Mate surfaces these roles with sponsorship filters so you're applying to positions confirmed to support visa candidates.
Backend Engineer at Klaviyo jobs are hiring across the US. Find yours.
Find Backend Engineer at Klaviyo JobsFrequently Asked Questions
Does Klaviyo sponsor H-1B visas for Backend Engineers?
Yes, Klaviyo sponsors H-1B visas for Backend Engineers. The company has a consistent pattern of filing H-1B petitions for engineering roles, reflecting its reliance on global technical talent. If you're in the H-1B cap lottery or already hold H-1B status, Klaviyo is a viable sponsoring employer for this function.
How do I apply for Backend Engineer jobs at Klaviyo?
You can browse open Backend Engineer positions on Klaviyo's careers page or through Migrate Mate, which filters roles by sponsorship eligibility. Once you identify a relevant opening, the process typically involves an initial recruiter screen, a technical assessment focused on systems design and coding, and several engineering panel interviews before an offer is extended.
Which visa types does Klaviyo commonly sponsor for Backend Engineers?
Klaviyo sponsors H-1B visas for temporary work authorization and supports employment-based Green Card pathways, including EB-2 and EB-3, for longer-term immigration goals. Backend Engineers on F-1 OPT can often begin work before an H-1B petition is filed, bridging the gap between graduation and cap-subject status.
What qualifications does Klaviyo expect for Backend Engineer roles?
Klaviyo's Backend Engineer roles typically require a bachelor's degree or higher in computer science, software engineering, or a closely related field, which also satisfies the H-1B specialty occupation requirement. Practically, interviewers focus on Python proficiency, experience with large-scale distributed systems, and familiarity with event-driven or data-pipeline architectures given Klaviyo's core product focus.
How do I plan my timeline if I need Klaviyo to sponsor my H-1B?
The H-1B cap registration window opens in March each year, with USCIS selecting registrations by lottery shortly after. An approved H-1B has an October 1 start date. To meet that cycle, you'll want an offer in hand by late February so Klaviyo's immigration counsel can register you on time. Missing the window means waiting a full year for the next cycle.
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