Software Engineer II Groups
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Job Location:
Boston, NH - USA
Monthly Salary:
Not Disclosed
Posted on:
Yesterday
Vacancies:
1 Vacancy
Job Summary
Klaviyo is growing fast and we have openings for all skill levels across all of our teams. Learn more about our engineering culture at
We love tackling tough engineering problems and look for Engineers who specialize in certain areas but are passionate about building owning & scaling features end to end from scratch and breaking through any obstacle or technical challenge in their way. We push each other to move out of our comfort zone learn new technologies and work hard to ensure each day is better than the last.
Klaviyo operates a real-time data platform built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines.
Team Overview
The Groups Team is responsible for the segmentation and audience creation functionality in Klaviyo. We process and store all of our customers data about their customers (profiles) and we allow them to group those profiles into audiences with our powerful segmentation engine. They can then send messages to those audiences or use them as a basis for reporting and analytics. We process billions of segment updates in real-time every day.
Responsibilities
As an engineer on this team you will be responsible for designing building and maintaining systems to support core product areas in Klaviyo. You will work with a cross functional team to help refine feature specifications write technical design documents create system infrastructure write high quality code and operate large scale systems in production. You will also review other engineers designs and code and provide technical mentorship to other engineers on the team and in the broader engineering organization.
Team Tech Stack
- Python
- Django
- MySQL
- ProxySQL
- ClickHouse
- Kafka
- ZooKeeper
- Redis
- Parquet
- Iceberg
- AWS
Required Skills
- 7 years of experience in a software engineering discipline
- Highly skilled in using at least one modern programming language
- Experience designing building and operating distributed systems in a cloud computing environment
- Experience with OLTP and OLAP databases
- schema design
- normalization / denormalization trade-offs
- performance
- operations
- Experience with high volume data processing and storage systems
- Experience using Linux operating systems
- Able to communicate well both verbally and in writing
- Able to work with others on a team
- Able to learn continuously and adapt to a high growth environment
- Able to stick with and solve difficult problems
- BA or BS Degree in Computer Science related field or equivalent experience
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 on April 3 2025.
Please see the independent bias audit report covering our use of Covey here
Required Experience:
IC
Key Skills
- Spring
- .NET
- C/C++
- Go
- React
- OOP
- C#
- Data Structures
- JavaScript
- Software Development
- Java
- Distributed Systems
About Company
Klaviyo unifies AI-powered email marketing and SMS to drive growth, retention, and measurable results. Build personalized, omnichannel experiences across WhatsApp, ecommerce, and more with K:AI Agents.
