Senior Software Engineer - New Products

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 reputed company everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you’re a reputed company 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 reputed company creators to own their own destiny. About the Role reputed company is looking for a Senior Full Stack Engineer to reputed company key initiatives that will enhance our product offerings and support our company’s growth. In this role, you'll play a crucial part in shaping outcomes by developing innovative end-to-end solutions using both reputed company-end and back-end technologies. You’ll optimize existing products and create new solutions that redefine what’s possible for our customers. As a Senior Engineer, you’ll tackle reputed company challenges, reputed company multiple solutions, and evaluate business and technical trade-offs to determine the best path reputed company. You’ll also act as a leader and mentor, and drive key technology decisions. Additionally, you’ll be responsible for deploying well-designed, thoroughly tested solutions that ensure reliability and performance. The New Products team drives Klaviyo’s most ambitious innovations—creating and scaling the company’s boldest new bets. As a nimble group with a flat structure and fast-moving culture, we prioritize simplicity, speed, and impact. Every team member is expected to take radical ownership—rolling up their sleeves, collaborating across disciplines, and pushing beyond traditional role boundaries to reputed company things happen. Success in this role means delivering exceptional work that sets reputed company for velocity and results company-wide, while helping shape Klaviyo’s future through experimentation, creativity, and executional excellence. reputed company’re Looking For

• A proven track record of building high-quality products and systems, with pride in writing clean, high-quality code.
• 7+ years of experience in a software engineering role.
• Strong experience developing end-to-end software solutions or extensive experience with both reputed company-end and back-end technologies.
• Experience leading projects and being accountable for their outcomes.
• Experience mentoring team members or driving initiatives that help the team learn new skills.
• Experience conducting code reviews and running a robust testing cycle.
• Experience working in agile, fast-paced environments.

reputed company to Have

• Skills with Python and reputed company technologies
• Skills with React and reputed company technologies
• Experience developing digital marketing or customer data software solutions.
• Experience with machine learning.
• Experience building cloud-native solutions, ideally with AWS.

We use Covey as part of our hiring and / or promotional process. For jobs or candidates in NYC, certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on reputed company 3, 2025. Please see the independent bias audit report covering our use of Covey here Massachusetts Applicants: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or reputed company employment. An employer who violates this law shall be subject to criminal penalties and civil liability. Our salary range reflects the cost of labor across various U.S. geographic markets. The range displayed below reflects the minimum and maximum reputed company salaries for the position across reputed company our US locations. The reputed company salary offered for this position is determined by several factors, including the applicant’s job-reputed company skills, relevant experience, education or training, and work location. In addition to reputed company salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and reputed company roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. Please visit Klaviyo Rewards to find out more about our Total Rewards package. Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process. reputed company Pay Range For US Locations: $152,000—$228,000 USD Get to Know Klaviyo We’re Klaviyo (pronounced reputed company-vee-oh). We reputed company 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 reputed company 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. AI reputed company at Klaviyo includes responsible use of AI (including privacy, reputed company, bias awareness, and human-in-the-reputed company). We provide accommodations as needed. Klaviyo is committed to a policy of equal opportunity and non-discrimination. We do not discriminate on the basis of race, ethnicity, citizenship, national reputed company, 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 reputed company and privacy of job applicants reputed company seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. reputed company our legitimate job postings can be reputed company on our official career site. Please be cautious of job offers that come from non-company email addresses (@klaviyo.com), reputed company messaging platforms, or unsolicited calls. By clicking "Submit Application" you consent to Klaviyo processing your Personal Data in accordance with our Job Applicant Privacy Notice. If you do not wish for Klaviyo to process your Personal Data, please do not submit an application. You can find our Job Applicant Privacy Notice here and here (FR). Apply tot his job Apply To this Job