Software Engineer II, Data Dictionary

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day.

We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements.

If you’re a close but not exact match with the description, we hope you’ll still consider applying. Want to learn more about life at Klaviyo?

Visit careers.klaviyo.com to see how we empower creators to own their own destiny.

Apply fast, check the full description by scrolling below to find out the full requirements for this role.

The Klaviyo Data Science team loves programming and the excitement that comes with building something people use. We are the kind of people that love talking to users and can find the balance between solving a problem quickly and thinking about how code will scale in the future.

We love to move fast, keep learning, and get stuff done.

Klaviyo operates a real-time data platform coded in Python 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.

Our data science team takes ideas from inception to new machine learning-powered features that ship to our hundreds of thousands of users.

You’ll be central to creating features that help our customers learn and grow from their data.

We love tackling tough engineering problems and are looking for a Senior Full Stack Engineer who is versatile across both front end and back end development, passionate about building, owning & scaling features end to end from scratch and breaking through any obstacle or technical challenge in their way.

Technologies we use (not comprehensive!) :

• Python
• Numpy, Scipy, Pandas
• Aurora, Cassandra, Kafka
• HTML, JavaScript, React
• SageMaker

How You Will Make a Difference

• Build features built on data science that thousands of our customers rely on daily to reach 100M+ of consumers to drive their business forward
• Ship code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from thousands of end users
• Be empowered to own the mission, technical direction and operations of projects that have immediate impact
• Test data science algorithms and techniques on data sets and engineer data systems that let non-technical users make decisions with their first party data in real time
• Advance your technical skills in all facets ranging from front end web development and user experience to machine learning and massively parallelized data pipelines
• Contribute to the company as a subject matter expert in multiple areas, constantly pushing yourself to be a better engineer and to level up all of your peers within your team and within Klaviyo

Who You Are

• 4+ years of software engineering experience in a fast-paced SaaS environment
• Enjoy working with new technologies ranging from the frontend to backend, and are particularly passionate and an expert in multiple stack areas
• Passionate about working with Data Scientists in productizing data science / machine learning models for end-users, including building out the necessary back-end and UX / UI (Javascript, HTML, React)
• Deep knowledge of object oriented programming and experience with at least one object oriented programming language (Python, C++, Java, C#, Ruby)
• Experience with database technologies such as SQL, PL / SQL and relational database schema design in production
• Experience with developing test strategies, designing automation frameworks, writing unit / functional tests to drive up code coverage and automation metrics
• Have a bachelor’s or advanced degree in computer science, applied math, statistics or other relevant quantitative discipline, or equivalent industry experience.

Get to Know Klaviyo

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.

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), gender identity, sexual orientation, physical or mental disability, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law.

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.

You can find our Job Applicant Privacy Notice here.

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