Senior Software Engineer - Profiles, Lists and Segments

About Klaviyo Klaviyo (NYSE: KVYO) is the autonomous B2C CRM. Powered by its built-in data platform and AI, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster. Klaviyo (CLAY-vee-oh) helps over 193,000 brands like Mattel, Glossier, Daily Harvest, and Liquid Death deliver 1:1 experiences at scale, improve efficiency, and drive revenue.

Klaviyo

Klaviyo is the autonomous CRM for B2C brands, built to turn what you know about your customers into real growth.

K

klaviyo.com

1,001-5,000 employees

Marketing Services

Boston, Massachusetts

2012

Public Company

179k LinkedIn followers

• customer-facing features that will make our product the best in the industry.
• You will work on creating easy-to-use editors that are highly performant.
• You will work closely with Product, Design, and Data Science to provide the
• best experience for our customers.
• You will mentor team members and drive initiatives that help the team learn
• new skills.

• 5+ years of experience in full-stack development with strong hands-on skills
• in React, Redux, JavaScript, HTML, and CSS, along with familiarity with
• general web best practices.
• Has a track record of delivering and shipping work powered by or accelerated
• through AI.
• Experience conducting code reviews and running a robust testing cycle using
• automated testing practices and frameworks, including end-to-end and
• integration tests (e.g., cypress, pytest).
• Experienced with RESTful and GraphQL APIs, and evolving APIs and data models
• to support product success.
• You take ownership of your work—from requirements and edge cases to
• implementation and testing—and are motivated by solving tough problems with
• others.
• Proven track record of leading complex, multi-quarter projects involving
• cross-team collaboration and being accountable for their outcomes
• React, TypeScript, Redux
• Python, Django
• Amazon Web Services (EC2, RDS, Aurora, S3, etc.), Terraform, and other DevOps
• tools
• We use Covey as part of our hiring and / or promotional process. For jobs or
• candidates in NYC, certain features may qualify it as an AEDT. As part of the
• evaluation process we provide Covey with job requirements and candidate
• submitted applications. We began using Covey Scout for Inbound
• Please see the independent bias audit report covering our use of Covey here
• It is unlawful in Massachusetts to require or administer a lie detector test as
• a condition of employment or continued employment. An employer who violates this
• law shall be subject to criminal penalties and civil liability.
• 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.

• 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.
• Base Pay Range For US Locations
• $148,000—$222,000 USD
• 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.
• 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 [https://www.klaviyo.com/careers/ai-guidance]. For more
• 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),
• IMPORTANT NOTICE: Our company takes the security and privacy of job applicants
• very seriously. We will never ask for payment, bank details, or personal
• financial information as part of the application process. All our legitimate job
• postings can be found on our official career site. Please be cautious of job
• offers that come from non-company email addresses (@klaviyo.com), instant
• messaging platforms, or unsolicited calls.
• By clicking "Submit Application" you consent to Klaviyo processing your Personal