At Customer.io we believe that businesses who create strong relationships with their customers will outperform the ones that don’t.

We’re working to make Customer.io the default choice for any internet business to deliver great, automated customer experiences at scale. Customer.io is used by over 1200 businesses to create continuity after a person leaves a website or mobile app. Every message (receipts, win-backs, and on boarding) across every channel (email, push, sms and more) can be managed and measured in Customer.io.

We're looking for collaborative site reliability engineers who love solving interesting puzzles and are excited to help us build out a scalable platform that our customers love. We understand that you might not have all the skills we've listed, and that's okay. If you have a combination of some of the items listed and you're interested in developing in the others, we want to hear from you!

Our small, remote-first team is fun-loving, passionate and highly effective. We offer a lot of opportunity to grow and refine your skills while having a significant impact. Other members of our site reliability team have backgrounds in a wide variety of industries, from Telecom to Gaming, and we believe that embracing our unique perspectives and expertise is key to our success as a collaborative team.

We value diversity, and as a distributed company are committed to giving you the flexibility and freedom to work from anywhere in the world, on a schedule that fits your family and your life.

As a Site Reliability Engineer you will:

  • Design, build and maintain core infrastructure pieces that allow Customer.io scaling to support real-time processing and delivery of billions of messages.
  • Plan the growth of Customer.io’s infrastructure.
  • Improve the deployment process to make it as boring as possible.
  • Be on our on-call rotation to respond to Customer.io availability incidents and provide support for technical support engineers with customer incidents.
  • Ensure monitoring and alerting alert on symptoms and not on outages.
  • Document every action so lessons learned turn into repeatable actions and then into automation.
  • Debug production issues across services and levels of the stack.
  • Take an active role in a friendly supportive team that encourages you and the entire company to grow as individuals, professionals and teams
  • Learn, practice and share with your coworkers through code review, pair programming, team collaboration and training to help improve our collective knowledge and best practices together

What we're looking for:

  • A collaborative mindset backed by excellent communication skills and a desire to help us make great decisions in an empathetic and respectful way
  • Experience in managing and working with RDB systems, preferably MySQL.
  • A solid understanding of problems of scalability and experience deploying and managing distributed applications on cloud infrastructure.
  • Deep knowledge of UNIX environments and ability to apply modern collaborative development practices. Go experience is nice to have, but most of our engineers have succeeded while picking it up on the job
  • Experience working within a distributed company is preferred

Why should you work with Customer.io?

There are lots of interesting and challenging projects for you to work on independently and with the team. You’ll have a say in what we do, and will collaborate across different teams. For example, our SREs and backend engineers help the support team with customer questions on a weekly rotating schedule.

We offer competitive salaries at or above market rate. Senior SREs range between $108,000 - 138,000 USD, depending on experience and subject to market rate. Check out our career's page for more information on our great benefits and why you should come work with us!

Diversity statement

We want to build and maintain a diverse, inclusive, and equitable environment where everyone has the opportunity to learn, mentor, and grow. We know that diverse teams make better products, and especially encourage applicants from underrepresented groups to apply — if you have any questions, please let us know via Twitter. We don’t want “culture fit”, but “culture add.” We want people with different backgrounds from the team we have today to bring their perspective and thoughtfulness to the work that we do and the culture we’re always working to build.

Come join us!

Apply below and be sure to add your favorite linux distro in your cover letter!

Apply for this Job

* Required
File   X
File   X


U.S. Equal Opportunity Employment Information (Completion is voluntary)

Individuals seeking employment at Customer.io are considered without regards to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, or sexual orientation. You are being given the opportunity to provide the following information in order to help us comply with federal and state Equal Employment Opportunity/Affirmative Action record keeping, reporting, and other legal requirements.

Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.


Form CC-305

OMB Control Number 1250-0005

Expires 1/31/2020

Voluntary Self-Identification of Disability

Why are you being asked to complete this form?

Because we do business with the government, we must reach out to, hire, and provide equal opportunity to qualified people with disabilities1. To help us measure how well we are doing, we are asking you to tell us if you have a disability or if you ever had a disability. Completing this form is voluntary, but we hope that you will choose to fill it out. If you are applying for a job, any answer you give will be kept private and will not be used against you in any way.

If you already work for us, your answer will not be used against you in any way. Because a person may become disabled at any time, we are required to ask all of our employees to update their information every five years. You may voluntarily self-identify as having a disability on this form without fear of any punishment because you did not identify as having a disability earlier.

How do I know if I have a disability?

You are considered to have a disability if you have a physical or mental impairment or medical condition that substantially limits a major life activity, or if you have a history or record of such an impairment or medical condition.

Disabilities include, but are not limited to:

  • Blindness
  • Deafness
  • Cancer
  • Diabetes
  • Epilepsy
  • Autism
  • Cerebral palsy
  • HIV/AIDS
  • Schizophrenia
  • Muscular dystrophy
  • Bipolar disorder
  • Major depression
  • Multiple sclerosis (MS)
  • Missing limbs or partially missing limbs
  • Post-traumatic stress disorder (PTSD)
  • Obsessive compulsive disorder
  • Impairments requiring the use of a wheelchair
  • Intellectual disability (previously called mental retardation)
Reasonable Accommodation Notice

Federal law requires employers to provide reasonable accommodation to qualified individuals with disabilities. Please tell us if you require a reasonable accommodation to apply for a job or to perform your job. Examples of reasonable accommodation include making a change to the application process or work procedures, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment.

1Section 503 of the Rehabilitation Act of 1973, as amended. For more information about this form or the equal employment obligations of Federal contractors, visit the U.S. Department of Labor's Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.