Senior Software Engineer - New Product jobs in United States
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Klaviyo · 7 hours ago

Senior Software Engineer - New Product

Klaviyo is a company that empowers creators to own their destiny by making first-party data accessible and actionable. They are seeking a Senior Software Engineer to lead key initiatives, develop end-to-end solutions, and optimize products to support the company’s growth.

AdvertisingAnalyticsE-CommerceMarketing AutomationSoftware
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Comp. & Benefits
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H1B Sponsor Likelynote

Responsibilities

Lead key initiatives that will enhance our product offerings and support our company’s growth
Develop innovative end-to-end solutions using both front-end and back-end technologies
Optimize existing products and create new solutions that redefine what’s possible for our customers
Tackle complex challenges, develop multiple solutions, and evaluate business and technical trade-offs to determine the best path forward
Act as a leader and mentor, and drive key technology decisions
Deploy well-designed, thoroughly tested solutions that ensure reliability and performance
Drive Klaviyo’s most ambitious innovations—creating and scaling the company’s boldest new bets
Take radical ownership—rolling up their sleeves, collaborating across disciplines, and pushing beyond traditional role boundaries to make things happen
Deliver exceptional work that sets the standard for velocity and results company-wide, while helping shape Klaviyo’s future through experimentation, creativity, and executional excellence

Qualification

Full Stack DevelopmentAI ExperimentationCloud-Native SolutionsPythonReactAgile MethodologiesCode ReviewsTesting CycleMentoring

Required

A proven track record of building high-quality products and systems, with pride in writing clean, high-quality code
7+ years of experience in a software engineering role
Strong experience developing end-to-end software solutions or extensive experience with both front-end and back-end technologies
Experience leading projects and being accountable for their outcomes
Experience mentoring team members or driving initiatives that help the team learn new skills
Experience conducting code reviews and running a robust testing cycle
Experience working in agile, fast-paced environments
You've already experimented with AI in work or personal projects, and you're excited to dive in and learn fast. You're hungry to responsibly explore new AI tools and workflows, finding ways to make your work smarter and more efficient
Transform workflows by putting AI at the center, building smarter systems and ways of working from the ground up

Preferred

Skills with Python and related technologies
Skills with React and related technologies
Experience developing digital marketing or customer data software solutions
Experience with machine learning
Experience building cloud-native solutions, ideally with AWS

Benefits

Participation in the company’s annual cash bonus plan
Variable compensation (OTE) for sales and customer success roles
Equity
Sign-on payments
A comprehensive range of health, welfare, and wellbeing benefits based on eligibility

Company

Klaviyo is an automation and email platform designed to help grow businesses.

H1B Sponsorship

Klaviyo has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (38)
2024 (29)
2023 (24)
2022 (27)
2021 (21)
2020 (8)

Funding

Current Stage
Public Company
Total Funding
$1.35B
Key Investors
ShopifySands Capital VenturesAccel
2025-08-13Post Ipo Secondary· $195.06M
2025-05-14Post Ipo Secondary· $372.95M
2023-09-20IPO

Leadership Team

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Andrew Bialecki
CEO
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Ed Hallen
Co-Founder, Chief Strategy Officer, Board Member
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Company data provided by crunchbase