Klaviyo Inc.
Klaviyo, a rapidly expanding NYSE listed enterprise technology company, is revolutionising the way businesses connect with their customers through advanced marketing automation solutions. Our cutting-edge platform empowers companies to create personalized, data-driven campaigns that drive exceptional results. As a leader in the industry, Klaviyo is committed to innovation, customer success, and fostering a collaborative work environment. Named as one of the UK's 'Great Places To Work' for the third year running, we are looking for individuals who want to join our dedicated team and help us grow our already impressive customer base in EMEA even further. We're seeking passionate Customer Success Professionals (CSMs) for our new state of the art and dynamic London office who thrive in a hybrid working environment (3 days in the office). Our mission is to exceed customer expectations and drive their growth. We're looking for CSMs who are dedicated to delivering the best experience to our EMEA customers. This is an exciting opportunity for someone with a customer-first attitude, strong consultative and technical skills, and a proven track record of creatively solving unique problems in a fast-paced environment. Ideal candidates will have a strong background in CRM, Campaign Management, Data and Analytics, Digital, E-Commerce, or Marketing Technology Solutions. How you will make a difference: Transform workflows by putting AI at the centre, building smarter systems and ways of working from the ground up. Be passionate about customer success and establish yourself as the trusted advisor for Klaviyo's fastest-growing segment, our Small and Medium Businesses Drive positive Net Revenue Retention by mitigating churn risk and identifying opportunities for customer expansion and upgrades. Devise customized success plans based on customers' goals and challenges, holding customers accountable for driving action. Compose strategies to increase email, SMS, and digital channel revenue for all customers through the Klaviyo platform while driving growth and expansion. Proactively review customer performance, address any open issues, and ensure consistent messaging and appropriate escalation. Keep customers up to date on product releases and new features. Share feedback with Product/Engineering to enhance customer engagement. Contribute to a positive team environment of collaboration, customer empathy, equality, and inclusion. Who you are: 2+ years of customer success or account management with a track record for building and nurturing relationships with multiple stakeholders on an account at a time. An experienced marketer with a background in campaign management, CRM, digital marketing, data, or analytics. You've already experimented with AI in work or personal projects, and you're excited to dive in and learn fast. You're hungry to responsibly explore new AI tools and workflows, finding ways to make your work smarter and more efficient. Familiarity with Marketing Automation technologies. A proven track record of advising customers or executing marketing strategies. Customer success or account management experience with a history of building and nurturing relationships with multiple stakeholders. Experience explaining how to achieve key goals using software with end users. A track record of creative problem-solving for customers and end users. Comfortable discussing and supporting commercial conversations. Thrives in a collaborative environment. Excellent organizational and project management skills. Excellent communication skills via phone, video conference, and email. Curious and eager to learn. Adaptable to change and comfortable working in a fast-paced environment. Experience with G-Suite, Gainsight, Salesforce, or similar tools. Fluent in French. 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 April 3, 2025. Please see the independent bias audit report covering our use of Covey here
Klaviyo, a rapidly expanding NYSE listed enterprise technology company, is revolutionising the way businesses connect with their customers through advanced marketing automation solutions. Our cutting-edge platform empowers companies to create personalized, data-driven campaigns that drive exceptional results. As a leader in the industry, Klaviyo is committed to innovation, customer success, and fostering a collaborative work environment. Named as one of the UK's 'Great Places To Work' for the third year running, we are looking for individuals who want to join our dedicated team and help us grow our already impressive customer base in EMEA even further. We're seeking passionate Customer Success Professionals (CSMs) for our new state of the art and dynamic London office who thrive in a hybrid working environment (3 days in the office). Our mission is to exceed customer expectations and drive their growth. We're looking for CSMs who are dedicated to delivering the best experience to our EMEA customers. This is an exciting opportunity for someone with a customer-first attitude, strong consultative and technical skills, and a proven track record of creatively solving unique problems in a fast-paced environment. Ideal candidates will have a strong background in CRM, Campaign Management, Data and Analytics, Digital, E-Commerce, or Marketing Technology Solutions. How you will make a difference: Transform workflows by putting AI at the centre, building smarter systems and ways of working from the ground up. Be passionate about customer success and establish yourself as the trusted advisor for Klaviyo's fastest-growing segment, our Small and Medium Businesses Drive positive Net Revenue Retention by mitigating churn risk and identifying opportunities for customer expansion and upgrades. Devise customized success plans based on customers' goals and challenges, holding customers accountable for driving action. Compose strategies to increase email, SMS, and digital channel revenue for all customers through the Klaviyo platform while driving growth and expansion. Proactively review customer performance, address any open issues, and ensure consistent messaging and appropriate escalation. Keep customers up to date on product releases and new features. Share feedback with Product/Engineering to enhance customer engagement. Contribute to a positive team environment of collaboration, customer empathy, equality, and inclusion. Who you are: 2+ years of customer success or account management with a track record for building and nurturing relationships with multiple stakeholders on an account at a time. An experienced marketer with a background in campaign management, CRM, digital marketing, data, or analytics. You've already experimented with AI in work or personal projects, and you're excited to dive in and learn fast. You're hungry to responsibly explore new AI tools and workflows, finding ways to make your work smarter and more efficient. Familiarity with Marketing Automation technologies. A proven track record of advising customers or executing marketing strategies. Customer success or account management experience with a history of building and nurturing relationships with multiple stakeholders. Experience explaining how to achieve key goals using software with end users. A track record of creative problem-solving for customers and end users. Comfortable discussing and supporting commercial conversations. Thrives in a collaborative environment. Excellent organizational and project management skills. Excellent communication skills via phone, video conference, and email. Curious and eager to learn. Adaptable to change and comfortable working in a fast-paced environment. Experience with G-Suite, Gainsight, Salesforce, or similar tools. Fluent in French. 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 April 3, 2025. Please see the independent bias audit report covering our use of Covey here
Klaviyo Inc.
Named as one of the UK's 'Great Places To Work' for the third year running, we are looking for individuals who want to join our dedicated team and help us grow our already impressive customer base in EMEA even further. We're seeking passionate Customer Success Professionals (CSMs) for our new state of the art and dynamic London office who thrive in a hybrid working environment (3 days in the office). Our mission is to exceed customer expectations and drive their growth. We're looking for CSMs who are dedicated to delivering the best experience to our EMEA customers. This is an exciting opportunity for someone with a customer-first attitude, strong consultative and technical skills, and a proven track record of creatively solving unique problems in a fast-paced environment. Ideal candidates will have a strong background in CRM, Campaign Management, Data and Analytics, Digital, E-Commerce, or Marketing Technology Solutions. How you will make a difference: Be passionate about customer success and establish yourself as the trusted advisor for Klaviyo's Mid-Market and Enterprise Businesses. Drive positive Net Revenue Retention by mitigating churn risk and identifying opportunities for customer expansion and upgrades. Devise customized success plans based on customers' goals and challenges, holding customers accountable for driving action. Compose strategies to increase email, SMS, and digital channel revenue for all customers through the Klaviyo platform while driving growth and expansion. Proactively review customer performance, address any open issues, and ensure consistent messaging and appropriate escalation. Keep customers up to date on product releases and new features. Share feedback with Product/Engineering to enhance customer engagement. Contribute to a positive team environment of collaboration, customer empathy, equality, and inclusion. Who you are: 4+ years of experience working with Mid-market / Enterprise accounts with a track record for building and nurturing relationships with multiple stakeholders in an account An experienced marketer with a background in campaign management, CRM, digital marketing, data, or analytics. Familiarity with Marketing Automation technologies. A proven track record of advising customers or executing marketing strategies. Customer success or account management experience with a history of building and nurturing relationships with multiple stakeholders. Experience explaining how to achieve key goals using software with end users. A track record of creative problem-solving for customers and end users. Comfortable discussing and supporting commercial conversations. Thrives in a collaborative environment. Excellent organizational and project management skills. Excellent communication skills via phone, video conference, and email. Curious and eager to learn. Adaptable to change and comfortable working in a fast-paced environment. Experience with G-Suite, Gainsight, Salesforce, or similar tools. Fluent in German and English to business proficiency 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 April 3, 2025. Please see the independent bias audit report covering our use of Covey here
Named as one of the UK's 'Great Places To Work' for the third year running, we are looking for individuals who want to join our dedicated team and help us grow our already impressive customer base in EMEA even further. We're seeking passionate Customer Success Professionals (CSMs) for our new state of the art and dynamic London office who thrive in a hybrid working environment (3 days in the office). Our mission is to exceed customer expectations and drive their growth. We're looking for CSMs who are dedicated to delivering the best experience to our EMEA customers. This is an exciting opportunity for someone with a customer-first attitude, strong consultative and technical skills, and a proven track record of creatively solving unique problems in a fast-paced environment. Ideal candidates will have a strong background in CRM, Campaign Management, Data and Analytics, Digital, E-Commerce, or Marketing Technology Solutions. How you will make a difference: Be passionate about customer success and establish yourself as the trusted advisor for Klaviyo's Mid-Market and Enterprise Businesses. Drive positive Net Revenue Retention by mitigating churn risk and identifying opportunities for customer expansion and upgrades. Devise customized success plans based on customers' goals and challenges, holding customers accountable for driving action. Compose strategies to increase email, SMS, and digital channel revenue for all customers through the Klaviyo platform while driving growth and expansion. Proactively review customer performance, address any open issues, and ensure consistent messaging and appropriate escalation. Keep customers up to date on product releases and new features. Share feedback with Product/Engineering to enhance customer engagement. Contribute to a positive team environment of collaboration, customer empathy, equality, and inclusion. Who you are: 4+ years of experience working with Mid-market / Enterprise accounts with a track record for building and nurturing relationships with multiple stakeholders in an account An experienced marketer with a background in campaign management, CRM, digital marketing, data, or analytics. Familiarity with Marketing Automation technologies. A proven track record of advising customers or executing marketing strategies. Customer success or account management experience with a history of building and nurturing relationships with multiple stakeholders. Experience explaining how to achieve key goals using software with end users. A track record of creative problem-solving for customers and end users. Comfortable discussing and supporting commercial conversations. Thrives in a collaborative environment. Excellent organizational and project management skills. Excellent communication skills via phone, video conference, and email. Curious and eager to learn. Adaptable to change and comfortable working in a fast-paced environment. Experience with G-Suite, Gainsight, Salesforce, or similar tools. Fluent in German and English to business proficiency 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 April 3, 2025. Please see the independent bias audit report covering our use of Covey here
Klaviyo Inc.
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 to see how we empower creators to own their own destiny. Lead Software AI Engineer At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We've built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and follow-on conversion data. We have a big opportunity to build state-of-the-art AI and machine learning technologies at Klaviyo to power our products and develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business. As a Lead Software AI Engineer at Klaviyo, you'll set technical direction and drive the design of scalable backend systems and AI-powered user experiences that form the foundation of our AI product strategy. You'll work closely with product managers, machine learning engineers, and data scientists while mentoring engineers and shaping architectural decisions. This is a backend-heavy leadership role with a strong focus on applied AI/ML, including large language models (LLMs) and agentic AI systems. How You Will Make a Difference Lead the design and development of backend systems that enable scalable AI solutions for 167K+ customers. Architect robust, reliable, and scalable data pipelines that train and serve AI/ML models at scale. Drive the integration of LLMs into production systems, powering AI agents that create and execute real-time customer experiences. Establish best practices for model evaluation, monitoring, and performance across generative and agentic AI use cases. Mentor and guide engineers, fostering a culture of technical excellence, ownership, and customer-centric product thinking. Partner with cross-functional leaders to influence AI product strategy and deliver high-impact solutions. Who You Are 7-10 years of professional software engineering experience , with a strong focus on backend systems and distributed architectures. Recent, hands-on experience with AI/ML and LLMs , including fine-tuning, evaluation, and production deployment. Proven ability to design and scale distributed systems that support AI-driven applications and agent capabilities. Proficient in Python and modern backend frameworks (FastAPI, Django preferred). Skilled with big data tools (Apache Spark, Hadoop) and distributed task queues (Kafka, Celery, SQS, RabbitMQ, Redis). Experienced in architecting APIs and cloud-native solutions (AWS, Kubernetes, CI/CD pipelines). Demonstrated technical leadership - mentoring engineers, shaping architecture, and raising the bar for engineering practices. Thrives in a fast-paced, startup-like environment with high autonomy and ownership. Curious, adaptable, and motivated to stay on the cutting edge of AI/ML research and apply it to real-world business challenges. Nice to Have Experience training and deploying reinforcement learning systems. Prior experience leading cross-functional initiatives involving data science, ML engineering, and product. 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 April 3, 2025. Please see the independent bias audit report covering our use of Covey here Our salary range reflects the cost of labour in the country where the job post is advertised. The base salary offered for this position is determined by several factors, including the applicant's job-related skills, relevant experience, education or training, and work location. In addition to base salary, our total compensation package may include participation in the company's annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. Please visit Klaviyo Rewards - Global Benefits 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. Base Pay Range in Local Currency: Get to Know Klaviyo We'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. AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human-in-the-loop). 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 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 instant 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).
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 to see how we empower creators to own their own destiny. Lead Software AI Engineer At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We've built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and follow-on conversion data. We have a big opportunity to build state-of-the-art AI and machine learning technologies at Klaviyo to power our products and develop AI agents that can automatically create and execute marketing or customer experiences, strategies, and campaigns for any business. As a Lead Software AI Engineer at Klaviyo, you'll set technical direction and drive the design of scalable backend systems and AI-powered user experiences that form the foundation of our AI product strategy. You'll work closely with product managers, machine learning engineers, and data scientists while mentoring engineers and shaping architectural decisions. This is a backend-heavy leadership role with a strong focus on applied AI/ML, including large language models (LLMs) and agentic AI systems. How You Will Make a Difference Lead the design and development of backend systems that enable scalable AI solutions for 167K+ customers. Architect robust, reliable, and scalable data pipelines that train and serve AI/ML models at scale. Drive the integration of LLMs into production systems, powering AI agents that create and execute real-time customer experiences. Establish best practices for model evaluation, monitoring, and performance across generative and agentic AI use cases. Mentor and guide engineers, fostering a culture of technical excellence, ownership, and customer-centric product thinking. Partner with cross-functional leaders to influence AI product strategy and deliver high-impact solutions. Who You Are 7-10 years of professional software engineering experience , with a strong focus on backend systems and distributed architectures. Recent, hands-on experience with AI/ML and LLMs , including fine-tuning, evaluation, and production deployment. Proven ability to design and scale distributed systems that support AI-driven applications and agent capabilities. Proficient in Python and modern backend frameworks (FastAPI, Django preferred). Skilled with big data tools (Apache Spark, Hadoop) and distributed task queues (Kafka, Celery, SQS, RabbitMQ, Redis). Experienced in architecting APIs and cloud-native solutions (AWS, Kubernetes, CI/CD pipelines). Demonstrated technical leadership - mentoring engineers, shaping architecture, and raising the bar for engineering practices. Thrives in a fast-paced, startup-like environment with high autonomy and ownership. Curious, adaptable, and motivated to stay on the cutting edge of AI/ML research and apply it to real-world business challenges. Nice to Have Experience training and deploying reinforcement learning systems. Prior experience leading cross-functional initiatives involving data science, ML engineering, and product. 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 April 3, 2025. Please see the independent bias audit report covering our use of Covey here Our salary range reflects the cost of labour in the country where the job post is advertised. The base salary offered for this position is determined by several factors, including the applicant's job-related skills, relevant experience, education or training, and work location. In addition to base salary, our total compensation package may include participation in the company's annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. Please visit Klaviyo Rewards - Global Benefits 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. Base Pay Range in Local Currency: Get to Know Klaviyo We'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. AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human-in-the-loop). 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 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 instant 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).