Senior Site Reliability Engineer

We are looking for a talented Senior Site Reliability Engineer to join our SRE team!

You will tackle complex challenges by designing and implementing scalable, reliable infrastructure and services that power the future of customer engagement technology. In this pivotal role, you'll leverage your extensive expertise in backend systems and infrastructure management to enhance the performance and reliability of our platforms. Your contributions will directly influence the shaping of architecture and operational excellence needed for our product to thrive.

• Architect and maintain critical infrastructure to enable Customer.io to scale and handle real-time processing of billions of messages.
• Strategically plan and implement infrastructure growth to meet evolving demands and repeatability.
• Streamline and automate processes for efficiency and reliability, removing manual toil.
• Participate in on-call rotations to swiftly address availability incidents and support technical engineers with customer-related issues.
• Develop observability to ensure comprehensive monitoring and effective alerting of infrastructure and applications.
• Troubleshoot and resolve production issues across various services and stack levels.
• Contribute to a collaborative and supportive team environment, fostering individual, professional, and team growth.
• Engage in continuous learning and knowledge sharing through code reviews, pair programming, and team collaborations to refine best practices.

• 7+ years of professional experience as a Site Reliability Engineer, with proven experience leading large complex projects affecting production SaaS environments.
• Professional experience with relational database systems, managing the servers and tuning performance, particularly MySQL.
• Proven experience managing scale, reliability and performance challenges managing distributed applications on cloud infrastructure (Google Cloud Platform is advantageous), both managed and self-hosted solutions.
• Proven ability to build cloud infrastructure using Terraform and develop operational tooling in various languages including Golang and Bash.
• Deep knowledge of UNIX environments and modern collaborative development practices.
• Excellent communication skills, both verbal and written, with a collaborative mindset to make informed, empathetic decisions.
• Ability to work autonomously in your timezone, advancing tasks and projects with minimal guidance.
• Demonstrated ability to influence product direction and contribute technical insights that help drive business value.
• A strong focus on proactive identification and resolving issues in production environments.
• A self-starter who thrives in both synchronous and asynchronous work environments.
• An AI-forward mindset. You’re excited by how AI is reshaping software development and actively integrate AI tools into your workflow to prototype, iterate, and ship smarter and faster.

Our mission at Customer.io is to power automated communication that people like to receive. Today over 7,500 internet businesses use Customer.io to manage, send, and track the performance of emails, SMS, push notifications, and in-app messages. Unlike typical marketing platforms, Customer.io helps businesses increase relevance by using behavioral data: what people do or don’t do when logged in to a web or mobile app.

Customer.io is committed to providing highly competitive cash compensation, equity, and benefits. We are offering a starting salary of $160,000 - $180,000 USD (or equivalent in local currency) depending on experience and subject to market rate adjustment.

• Unlimited PTO - we encourage at least 20 vacation days (in addition to holidays and sick days) so that you can unwind, unplug, and recharge
• 16 weeks paid parental leave (including adoption and foster care)
• 100% paid insurance premiums for you and your dependents
• 401k retirement matching - up to 5% dollar-for-dollar match to retirement contributions
• $1,500 annual healthy lifestyle budget (for gym memberships, classes, fitness equipment)
• $250/monthly Remote Work Stipend to be used for home internet, cell phone, and other miscellaneous remote work costs
• $300/month co-working space rental reimbursement
• $2,000/yearly professional education budget for conferences, courses, workshops, books, etc.
• $1,500 home office budget to make sure your working space is ergonomic and just what you need to do your best work!
• One month sabbatical after five years at Customer.io
• We also have opportunities to meet in person with your peers throughout the year

All final candidates will be asked to complete a background check and employment verifications as part of our pre-employment process.

Customer.io recognizes the stifling impact of systemic injustice on diverse communities. We commit to using our influence to increase inclusion and equity within the tech industry. We strive to build an inclusive team culture, implement bias-free hiring practices, and develop community partnerships to expand our global impact.

Check out our careers page for more information about why you should come work with us! We are passionate about our core values of Empathy, Transparency, Responsibility, and Awkwardness and are looking for new coworkers to share and build that passion!

Apply at the link below and tell us why you're interested in the position! ****We plan to respond to all applicants with a status update about your application.

At Customer.io, we prioritize authentic interest and applications in our hiring process. To ensure fairness and integrity, the use of AI or automation during interviews or assessments is prohibited. Candidates who do not adhere to this will be removed from consideration.

1. 30-minute video call with a Recruiter

2. 60-minute video call with the Hiring Manager

3. Take Home Assignment

4. 90-minute Assignment Review / Technical Interview with two potential team members

5. Final Interview