Senior Machine Learning Engineer

| Greater Boston Area
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Klaviyo is growing fast and we have openings for all skill levels across all of our teams. Learn more about our engineering culture at https://klaviyo.tech and listen to our data science team podcast at https://medium.com/klaviyo-data-science

We love 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 your code will work in the future. We love to move fast, keep learning and get stuff done.

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. For this role, we’re looking for people who have developed split brains--software engineers who have become great at writing machine learning code or data scientists who have become great software developers.

Technologies we use (not comprehensive!): 
Python
Numpy, Scipy, Pandas
Aurora, Cassandra, Kafka
HTML, JavaScript, React
SageMaker

How you will make a difference:

    • Build products that enable our customers to grow faster using data science.
    • Develop machine learning models and pipelines for research and production.
    • Analyze large data sets (we’re collecting billions of individual actions every month).

Who You Are:

    • 4+ years of software engineering experience in a SaaS environment
    • Experience mentoring or managing Engineers 
    • Have experience implementing machine learning models, data pipelines and testing frameworks for research and production use.
    • Have demonstrated a measurable impact based on the models you’ve created. It’s not always easy getting a model correct, we love talking about places we got stuck and work as a team to think through ideas that could unblock us.
    • Have experience processing cloud-scale data using parallel, elastic, streaming and similar techniques.
    • Enjoy tuning and validating machine learning models and take a rigorous approach.
    • Understand how to profile code and optimize performance.
    • Aspire to correctness (e.g. in your code, in drawing conclusions from data)
    • 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
Klaviyo is the world’s leading owned marketing platform known for accelerating revenue for online businesses using the channels they own like email, web, and mobile. Enabling companies to leverage these owned marketing channels, Klaviyo makes it easy to store, access, analyze and use transactional and behavioral data to power highly-targeted customer and prospect communications. And unlike other marketing platforms, Klaviyo doesn’t force companies to compromise between advanced functionality or ease of use - so companies of all sizes are able to maximize their sales quickly. That’s why over 50,000 innovative companies like Unilever, Custom Ink and Eventbrite sell more with Klaviyo.
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Technology we use

  • Engineering
    • JavaLanguages
    • JavascriptLanguages
    • PythonLanguages
    • SqlLanguages
    • ReactLibraries
    • Twitter BootstrapLibraries
    • Backbone.jsFrameworks
    • DjangoFrameworks
    • FlaskFrameworks
    • HadoopFrameworks
    • CassandraDatabases
    • MySQLDatabases
    • RedisDatabases

Location

We're in the heart of the Financial district with easy access to public transportation and a short walk from South Station.
A Glimpse Into Klaviyo's Fast-Paced Culture: "We Like the Adventure. We Love the Thrill."
Watch

An Insider's view of Klaviyo

What’s the vibe like in the office?

The simplest way I would describe the Klaviyo office is "energy". From the minute you start your day there's an excitement that everyone is working toward the common goal of helping businesses grow. It's a pretty amazing thing to be a part of and you can really feel it.

Jon

Director of Community Management

How do you collaborate with other teams in the company?

One of the great things about working at Klaviyo is that I get to work with amazing people from across the organization. While working in Finance isn’t intuitively a role that involves a lot of collaboration - Klaviyo’s finance team has regular interactions and team syncs with Sales Ops, Customer Support and the People Team!

Tai

Staff Accountant

What are Klaviyo Perks + Benefits

Klaviyo Benefits Overview

Klaviyo pours into team members by providing a diverse and inclusive environment. We also take pride in our quality health benefits and programs. In our efforts to achieve overall happiness for Klaviyos, we offer competitive salaries and 401K planning through Principal. Protect yourself against hardships with life and disability insurance, continue learning and developing with tuition reimbursement, and achieve peace with Headspace. Additional perks include unlimited vacation time, employee referral bonuses, commuter expenses, fitness reimbursements, free books, and a thriving company atmosphere.

Culture
Volunteer in local community
Partners with Nonprofits
Friends outside of work
Eat lunch together
Intracompany committees
We have a diversity and Inclusion committee that sponsors monthly company-wide activities to educate and enrich our employees.
Open door policy
Team owned deliverables
Team based strategic planning
Group brainstorming sessions
Pair programming
Open office floor plan
Diversity
Dedicated Diversity/Inclusion Staff
Unconscious bias training
Someone's primary function is managing the company’s diversity and inclusion initiatives
Diversity Employee Resource Groups
Hiring Practices that Promote Diversity
Health Insurance & Wellness Benefits
Flexible Spending Account (FSA)
Klaviyo employees can contribute up to $2700 annually to their FSA.
Disability Insurance
Disability insurance that covers 60% of annual salary.
Dental Benefits
Our dental plan covers : 100% for preventative care., 80% for basic restorative, 50% for major restorative.
Vision Benefits
Our vision benefits plan covers 100% for annual eye exams with $150 for glasses and contact lenses.
Health Insurance Benefits
Life Insurance
Life insurance is equal to 1 times an employee's annual salary up to 300k.
Wellness Programs
Onsite Gym
Team workouts
Live virtual Yoga
Mental Health Benefits
For example, free access to Headspace meditation app
Retirement & Stock Options Benefits
401(K)
Klaviyo's 401k plan offers stocks, bonds and international index funds to choose from.
401(K) Matching
Company Equity
Klaviyo offers equity packages to full time employees.
Child Care & Parental Leave Benefits
Generous Parental Leave
We provide up to 12 weeks of parental leave.
Flexible Work Schedule
Klaviyo provides employees with a flexible work schedule that includes Core hours, Flexible start and end times.
Remote Work Program
Family Medical Leave
Adoption Assistance
Return-to-work program post parental leave
Company sponsored family events
Acme co. sponsors family oriented events Annually.
Vacation & Time Off Benefits
Unlimited Vacation Policy
Paid Volunteer Time
Klaviyo offers unlimited time off.
Paid Holidays
Paid Sick Days
Klaviyo offers unlimited time off.
Perks & Discounts
Beer on Tap
Casual Dress
Commuter Benefits
Klaviyo offers Tax preferred transit and parking plans for employees.
Company Outings
Klaviyo Hosts bi-annual company parties and milestone celebrations when targets are reached ! ( usually once a year)
Game Room
Klaviyo offers ping-pong tables, and a number of different gaming consoles for employee use.
Stocked Kitchen
Klaviyo offers a WELL STOCKED FREE kitchen with snacks and drinks for all employees.
Some Meals Provided
Klaviyo often surprises employees with free breakfast or meals and Free lunch on Wednesdays for all!
Happy Hours
Happy hours are hosted Once per week on Fridays!
Parking
There is a parking garage in the building.
Recreational Clubs
Fitness Subsidies
Klaviyo offers 3 months of subsidised gym membership.
Home Office Stipend for Remote Employees
Professional Development Benefits
Job Training & Conferences
Acme Co. offers employees professional development opportunities like Annual individual budget for training, Onsite training courses, The ability to attend job related conferences and seminars.
Tuition Reimbursement
Our tuition reimbursement plan offers an annual max of $3000 for continuing education.
Diversity Program
Lunch and learns
Klaviyo hosts weekly Lunch and Learns.
Cross functional training encouraged
Promote from within
Continuing Education stipend
We offer $3000 annualy for continuing education.
Time allotted for learning
Online course subscriptions available
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