Klaviyo · 18 hours ago
Software Engineer II - Events
Boston, MA
Full-time
Onsite
Mid Level
$116K/yr - $174K/yr
3+ years expKlaviyo is a company that empowers creators to own their destiny by making first-party data accessible and actionable. They are seeking a Software Engineer II for their Events team, responsible for building and operating distributed systems that manage real-time event ingestion and processing at scale.
AdvertisingAnalyticsE-CommerceMarketing AutomationSoftware
Responsibilities
Build and operate real-time event ingestion pipelines used by nearly every Klaviyo feature
Improve system reliability, performance, and observability in a high-scale environment
Work on systems that directly power customer-facing automation, analytics, and personalization
Gain hands-on experience debugging and operating distributed systems in production
Collaborate closely with engineers across Core Data and product teams
Design, implement, and maintain event ingestion and processing systems
Deliver well-scoped projects end-to-end with guidance from senior engineers
Write high-quality, maintainable, and well-tested production code
Participate in code reviews and technical design discussions
Help monitor and improve system performance, reliability, and cost efficiency
Participate in on-call rotations and incident response with mentorship and support
Work cross-functionally to ensure event data is reliable and usable by downstream systems
Qualification
Required
3–5 years of professional software engineering experience
Experience building and maintaining production systems and working with databases
Proficiency in at least one programming language (Python preferred)
Understanding of distributed systems fundamentals (e.g. concurrency, failure modes)
Strong debugging and problem-solving skills
Ability to deliver well-scoped work independently while collaborating effectively with a team
Preferred
Experience with data pipelines, databases, streaming systems, or real-time processing
Experience operating systems in a cloud environment (AWS preferred)
Familiarity with monitoring, alerting, and incident response
Exposure to high-throughput or low-latency systems
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
Investing.com
2026-01-03
2025-12-17
Company data provided by crunchbase