Senior Software Engineer - Channel Services

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.Why You Should Join the Channel Services TeamThe Channel Services team has the very ambitious mission of being responsible for Klaviyo’s message handling across multiple communication channels (e.g. email, SMS, push, etc). We are responsible for abstracting away channel-specific details and providing a platform that allows Klaviyo and our customers to scale message handling, and to scale the communication channels that we can support.Klaviyo is a data analytics and business communication platform where hundreds of thousands of our customers schedule tens of thousands campaigns and deliver over 500M emails every day, and every message that flows through our system will be processed by the code and architecture that you will create and help to maintain. During the 2022 Black Friday and Cyber Monday, over 10.4B emails were processed and delivered through our system without any developer intervention. We’re proud of these achievements and passionate about continually scaling and evolving our systems to support and help drive Klaviyo’s rapid growth (2x per year the past several years) by using modern technologies and patterns. Imagine being able to, with little effort, enable customers to multiplex their business communication campaigns across additional non-traditional communication channels like WhatsApp, Telegram, Slack, etc. This team will make that possible and we would love for you to help. If you like to take on new challenges working on large-scale, complex systems, come join us!How You Will Make a DifferenceIn this role, you will own and build features/services that hundreds of thousands of Klaviyo customers rely on daily to drive their business forward.Work on crafting our highly-scalable, highly-available Channel Services that processes and delivers hundreds of millions of communication across a growing number of channels daily.Collaborate radically with teams and stakeholders across Klaviyo on designs, implementations, and engineering practices.Learn new technologies, bring them to the team and apply them to evolve our systems to the next level.Help us improve our experimentation and development processes, and mentor other engineers on the team.Participate in the technical interview process to help maintain a high bar for our growing teams.Contribute to the company as a subject matter expert, constantly pushing yourself to be a better engineer and to level up all of your peers within your team and within Klaviyo.Who You AreHave 4-6+ years of experience in a software engineering discipline and have architected, built and delivered at least one complex system.Experience on large-scale system architecture, technologies and patterns. Have a good understanding of their pros/cons and use scenarios, able to apply them to system design by making appropriate tradeoffs to meet the business needs best.Love digging into performance and scalability issues to drive breakthrough solutions-- whether it's a performance degradation or too many clicks in a workflow, a database query timing out, or a queue that just won’t drain. You recognize all problems can be solved.Passionate about growing and improving a product daily using a data driven mindset, familiar with system monitoring and alerting techniques.Proven experience with being a coach and a mentor for team members and helping them grow.Like working on small, high-performing autonomous agile teams. At Klaviyo, you will have ownership of features, but you'll collaborate radically with everyone to make sure we produce the right solution.Technologies We Use (not Exhaustive)Python, Django, React, RabbitMQ, Celery, MySQL, Redis, Memcached, Apache Zookeeper.Amazon Web Services (EC2, RDS, Aurora, etc.), Terraform, Jenkins.The pay range for this role is listed below. Sales roles are also eligible for variable compensation and hourly non-exempt roles are eligible for overtime in accordance with applicable law. This role is eligible for benefits, including: medical, dental and vision coverage, health savings accounts, flexible spending accounts, 401(k), flexible paid time off and company-paid holidays and a culture of learning that includes a learning allowance and access to a professional coaching service for all employees.Pay Range For US Locations:$156,800—$235,200 USDGet to Know KlaviyoWe’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. #J-18808-Ljbffr