Senior Software Engineer, Klaviyo
Full Stack/Frontend
$156.8-235.2k
3+ days a week in office
The only CRM built for B2C
Job no longer available
The only CRM built for B2C
1001+ employees
Job no longer available
$156.8-235.2k
3+ days a week in office
1001+ employees
Company mission
Klaviyo is the only CRM built for B2C brands. Powered by its built-in data platform and AI insights, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster.
Role
Who you are
- Experienced Frontend Leader: You bring extensive professional experience in leading frontend development projects, with expert proficiency in React and other modern JavaScript frameworks
- You have a strong grasp of state management libraries, caching strategies, RESTful APIs, Apollo GraphQL, and UI testing tools like Cypress, Puppeteer, or Playwright
- Architecture and Design Acumen: Demonstrable ability to architect robust, scalable frontend systems
- You can effectively break down and prioritize tasks, design reusable and modular components, and foresee potential challenges in large-scale implementations
- You thrive in a collaborative environment, working very closely with our design and user research team to translate wireframes and designs into functional requirements
- Customer-Oriented Developer: Committed to creating user-centric solutions, you’ll leverage our user research teams, A/B testing framework, and UX design principles to refine product features for maximum impact and usability
- Eager Learner and Team Player: Your drive to stay ahead of technology trends is matched by your enthusiasm for sharing knowledge
- You actively seek out opportunities to enhance both your technical and leadership skills within a dynamic team environment
- Advocate for Quality and Precision: Known for a meticulous approach to development, you ensure that all features meet high standards of quality and performance before deployment
- You lead by example in writing clean, testable, and efficient code
- Mentorship and Guidance: While this is not a management role, you’ll have a track record in mentoring, you are adept at coaching less experienced engineers, providing them with career guidance and technical advice
- You are a go-to person for code reviews, offering insightful and actionable feedback
What the job involves
- At Klaviyo, stepping into a Senior Software Engineering role means immersing yourself in high-visibility, high-impact projects that resonate deeply with our users
- In this role, you will be a key player on our team, directly shaping our product experience to ensure it is intuitive and engaging for a diverse customer base
- You'll have the opportunity to work alongside a team of committed and skilled engineers who are not just passionate about technology but are pioneers in creating seamless user experiences
- By joining us, you'll engage in meaningful work that directly enhances how businesses connect with their customers
- Klaviyo is a place for growth and learning and you'll have ample opportunities to expand your technical and collaborative skills, owning major features from conception to deployment
- Our environment promotes continuous learning, offering you the chance to enhance your expertise across various domains and technologies
- Building User-Focused Features: Develop and maintain highly visible, user-facing features that enhance the intuitiveness and delightfulness of using Klaviyo
- Use advanced frontend technologies to create scalable, efficient, and visually compelling user interfaces that directly address customer needs
- Engineering Best Practices: Contribute significantly to the engineering culture at Klaviyo by establishing, documenting, and promoting best practices
- Lead initiatives to introduce and standardize frontend frameworks and tools that increase development efficiency and maintainability
- Web and Browser Performance Expertise: Ensure optimal performance of our web applications, focusing on enhancing responsiveness and efficient browser rendering to deliver a seamless user experience
- You'll leverage tools like Sentry and browser devtools to monitor, debug, and address performance concerns
- Team Collaboration and Mentorship: Engage actively in building a strong team environment centered on education and mentorship
- Learn alongside your peers to continuously advance collective skills and enhance software quality
Our take
Klaviyo is a marketing firm helping growth-focused eCommerce brands drive more sales with super-targeted, highly relevant email, Facebook and Instagram marketing campaigns. From personalised newsletters to automated emails when customers abandon their shopping carts, the marketing automation platform makes it easy for businesses to capture, store, analyze, and predictively use their own data to drive measurable, high-value outcomes.
Klaviyo's CEO, Bialecki, believes that the main problem with e-mail marketing today is that there is a divide between two kinds of tools: analytics tools that help you understand what people are doing on a website, such as what products they are considering, and messaging tools that send them a marketing e-mail. Operating primarily within the retail and eCommerce industry, Klaviyo aims to solve this by offering a tool that brings together analytics and messaging. This allows companies to bring all of their first-party data into a single platform to get a deep understanding of their customers and then activate that data to deliver highly-targeted, personalised communications through email and SMS. In the process, Klaviyo's customers get a deep understanding of their consumers.
Klaviyo is a fast-growing company mainly due to its business model - the firm offers a concrete ROI for Klaviyo’s clients if the software persuades customers to make purchases by treating different types of customers differently. An IPO in 2023 has led to Klaviyo's release of Klaviyo AI, which empowers businesses to unlock revenue-driving opportunities and deliver exceptional customer experiences across channels. Still in its early days of public listing, it will be interesting to see how Klaviyo fares in the years to come.
Freddie
Company Specialist at Welcome to the Jungle
Meet the team
2 people
Blake Schuller, Manager of New Hire Onboarding
Our mission
Base Camp provides a best in class onboarding program, fueled by 'just in time' learning throughout a new hires' first 100 days.Insights
Company
Employee endorsements
Opportunities to learn
"Not only we have a good stipend to spend on learning but we also have development days every quarter, where we can switch off and focus on the areas..."
Company benefits
- Private medical insurance
- Medical
- Dental
- Vision
- Lifestyle spending account
- Commuter benefits
- Modern Health - wellness platform
- Parental leave
- Company equity
- Employee stock purchase plan
- Blue Cross Blue Shield of Massachusetts
- Dental insurance
- Vision coverage through EyeMed
- Health savings account (HSA)
- Flexible spending accounts (FSAs)
- Employee assistance program (EAP)
- 401(k) plan with company match
- Flexible paid time off (FPTO)
- 13 company holidays
- Paid parental bonding leave
Company values
- Put customers first: We prioritize our customers > customers’ customers > team > ourselves. We empathize deeply with our customers by walking in their shoes and solving their greatest pain points. We start with what’s best for the customer, not what’s best for us, and work backwards, delivering experiences our customers will talk about.
- Win together: We’re one team, we get to know each other, we’re okay with conflict and willing to disagree and commit. We are honest, direct, transparent, and respectful. We seek and incorporate diverse perspectives and assume good intent.
- We’re 1% done: We’re just getting started – our greatest products, work, and achievements are in front of us. We have a beginner’s mindset – we see the opportunities to build and improve and have the ambition to go after them. We benchmark against the best, aim to beat them, and celebrate when we do.
- Know the score: We’re clear about what success is for each project and how it ladders to our overall success. Results are what matter. Working hard is required, but it’s not success. We use data and past performance to motivate our future strategy.
- Be meticulous in your craft: We seek to do work so good that people rave about it. We are rigorous, thorough and prepared. We are or expect to be the experts everyone in the world turns to.
- Move fast, no shortcuts: Speed matters. We set ambitious deadlines, we like short cycles and being first to market. We don’t skip critical steps or requirements to make a date. We’re comfortable living in the grey and making judgment calls to decide what’s required and what’s not.
- Drivers wanted: No passengers — we’re proactive and engaged, and if we see something wrong it’s our responsibility to fix it or raise the issue to its owner. Have a vision and make sure it’s compelling. No job is beneath us. If it needs to get done, we’re happy to pick it up. We use and spend resources like they’re our own.
- Stay hungry, stay humble: We are insatiably curious learners; our slopes are very high. If we don’t know something, we’re world- class at figuring it out. We take calculated risks and sometimes make mistakes — we’re not perfect. When we fail, we learn from it and improve going forward. Feedback is a gift, even if it hurts sometimes. We don’t tolerate brilliant jerks.
Company HQ
Boston, MA
Articles
Leadership
Andrew Bialecki
(CEO)Previously CTO at RockTech, Senior Engineer at Performable, Lead Engineer at Applied Predictive Technologies and an SDET Intern at Microsoft
Ed Hallen
(Chief Product Officer)Currently an Advisor at Team Engine. Previously worked in Enterprise Business Development at Google, Summer Associate at Accel-KKR and Principal at Applied Predictive Technologies.
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