Klaviyo · 2 hours ago
Software Engineer II, New Verticals/Integrations
United States
Full-time
Remote
Mid, Senior Level
$120K/yr - $180K/yr
4+ years expKlaviyo is a company that empowers creators to own their own destiny by making first-party data accessible and actionable. They are seeking a Software Engineer II to join their Integrations team, responsible for building and maintaining integrations with various third-party vendors, ensuring efficient and scalable solutions.
AdvertisingAnalyticsE-CommerceMarketing AutomationSoftware
Responsibilities
Have an opportunity to make a major impact on the direction and priorities of the Integrations team - wholly owning features that 160,000+ customers rely on daily to reach 4B+ consumers to drive their business forward
Be responsible for the mission, technical direction and operations of projects that have immediate impact
Responsible for building and managing Klaviyo’s integrations, integration settings pages, API services that communicate with 3rd-party vendor APIs, data transformation of data flowing between Klaviyo and the 3rd-party vendors, as well as wiring up the API Services into a number of data pipelines
Helping architect and design robust and high performance data processing and storage systems to serve different internal and external use cases
Build prototypes, establishes design patterns, consults with domain experts and otherwise works to ensure a team's successful delivery of technical solutions
Contribute to the Klaviyo R&D team as a subject matter expert in multiple areas
Provide quality PR reviews for our code-owned areas of the application
Lead by example and help improve engineering processes and workflows within the Integrations space as well in the wider engineering community
Qualification
Required
4+ years of hands-on software development experience creating and maintaining highly available, full-stack SaaS products at scale
Bachelor's degree or equivalent
A good understanding of the Integrations technical space - 3rd party APIs, authentication, storage, and data pipelines
In-depth understanding of commonly used web architecture design patterns when it comes to highly scalable systems
Experience owning and delivering projects or features of projects including design, development, and deployment
Excellent verbal and written communication skills
Ability to question convention, proactively find ways to innovate, and drive incremental improvements
Experience working on small, autonomous agile teams
Good understanding of popular AI tools (ChatGPT, Claude Code, Cursor, Gemini, etc.) and know how to use them effectively
Enjoy working with new technologies ranging from the frontend to backend, and are particularly passionate and an expert in various tech stacks
Ability to dig into performance and scalability issues to drive breakthrough solutions
Experience creating, teaching, and improving shared engineering processes
Ability to estimate and manage project timelines and risks
Proficient in writing technical specifications and documents based on product feature specifications
Capable of leading discussions and presentations to ensure alignment on architectural decisions
Highly collaborative, ambitious, and ability to champion ideas based on merit
Experience experimenting with AI in work or personal projects
Benefits
Participation in the company’s annual cash bonus plan
Variable compensation (OTE) for sales and customer success roles
Equity
Sign-on payments
Comprehensive range of health, welfare, and wellbeing benefits based on eligibility
Company
Klaviyo
Klaviyo is an automation and email platform designed to help grow businesses.
1001-5000 employees
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 (47)
2024 (29)
2023 (24)
2022 (27)
2021 (21)
2020 (8)
Funding
Current Stage
Public CompanyTotal Funding
$1.35BKey Investors
ShopifySands Capital VenturesAccel
2025-08-13Post Ipo Secondary· $195.06M
2025-05-14Post Ipo Secondary· $372.95M
2023-09-20IPO
Leadership Team
Andrew Bialecki
CEO
Ed Hallen
Co-Founder, Chief Strategy Officer, Board Member
Recent News
2025-12-17
2025-12-16
2025-12-16
Company data provided by crunchbase