Senior Software Engineer

4 weeks ago

Boston, Massachusetts, United States Klaviyo Full time

At Klaviyo, we value the unique backgrounds, experiences, and perspectives each team member brings to our workplace every day.

We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond traditional job requirements.

Want to learn more about life at Klaviyo? Visit our website to see how we empower creators to own their own destiny.

Why you should work with us


As a Senior Software Engineer at Klaviyo, you will be immersed 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.


How you will make an impact


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.


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.


Key Responsibilities :
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.


Requirements :
Experienced Frontend Leader with expert proficiency in React and other modern JavaScript frameworks.

Strong grasp of state management libraries, caching strategies, RESTful APIs, Apollo GraphQL, and UI testing tools like Cypress, Puppeteer, or Playwright.


What We Offer :
Competitive base pay range for US locations: $156,800-$235,200 USD.

Medical, dental, and vision coverage, health savings accounts, flexible spending accounts, 401(k), flexible paid time off, and company-paid holidays.


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.


Our Commitment :
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.


Job Applicant Privacy Notice :
Find our Job Applicant Privacy Notice here.

  • Senior Software Engineering Lead

    4 weeks ago

    Boston, Massachusetts, United States Talent Software Services Full time

    Job Summary:Talent Software Services is seeking a Senior Software Engineering Lead - Python/NodeJS for a direct placement position in MA (Hybrid).Key Responsibilities:Develop and execute projects as part of an Agile team.Collaborate with senior engineers to establish software design guidelines and standard methodologies.Deliver accurate estimates for...

  • Senior .NET Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States United Software Group Full time

    Job Title: Senior .NET Software EngineerAbout the Role:United Software Group is seeking a highly skilled Senior .NET Software Engineer to join our team. As a key member of our development team, you will be responsible for designing, developing, and deploying high-quality software solutions using the .NET development stack.Key Responsibilities:Design and...

  • Senior Software Engineer

    2 weeks ago

    Boston, Massachusetts, United States Solomon Page Full time

    We are looking for a Senior Software Engineer to join our team. As a Senior Software Engineer, you will be responsible for designing, developing, and maintaining complex software systems. You will work closely with the product team to understand requirements and design solutions that meet the needs of our customers. You will also mentor junior engineers and...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States NBI Inc Full time

    We are seeking a highly skilled Senior Software Engineer to join our team at NBI Inc. This role involves developing complex applications, both web and standalone, to solve challenging business problems.The ideal candidate will have a strong background in software development, excellent problem-solving skills, and the ability to work independently in a...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States FirstPRO Full time

    Job Title: Senior Software EngineerAbout the Role:We are seeking a highly skilled Senior Software Engineer to join our Private Investments Development team at FirstPRO. As a key member of our team, you will be responsible for designing, developing, and maintaining our web applications and systems.Key Responsibilities:- Design and develop robust front-end and...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States SS&C Technologies Full time

    SS&C Technologies is seeking a highly skilled Senior Software Engineer to join the Eze OMS team based out of our Boston headquarters.Eze's award-winning Investment Suite features a set of integrated applications that provide best-in-class asset management functionality to streamline the investment lifecycle.As a Senior Software Engineer on the OMS, you will...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States 1910 Genetics Full time

    Job Title: Senior Software EngineerAbout the Role:At 1910 Genetics, we are seeking a highly skilled Senior Software Engineer to join our team. As a key member of our engineering team, you will play a pivotal role in designing, developing, and maintaining a state-of-the-art cloud-based platform that empowers our scientists and researchers to make...

  • Senior Windows Network Engineer

    4 weeks ago

    Boston, Massachusetts, United States Rocket Software Full time

    Job SummaryRocket Software is seeking a highly skilled Senior Windows Network Engineer to join our team. As a key member of our IT organization, you will be responsible for designing, implementing, and maintaining our corporate network infrastructure.Key ResponsibilitiesImplement equipment installation plans based on specificationsMaintain each component of...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States Medtronic Full time

    About the RoleWe are seeking a highly skilled Senior Software Engineer to join our team at Medtronic. As a key member of our software development team, you will be responsible for designing, developing, and testing software solutions for our medical devices.Key Responsibilities:Design and develop software solutions for medical devicesCollaborate with...

  • Senior Software Engineer

    1 month ago

    Boston, Massachusetts, United States Pyramid Consulting Full time

    Job Opportunity:We are seeking a highly skilled Senior Software Engineer to join our team at Pyramid Consulting, Inc. in Boston, MA. This is a 12+ months contract opportunity with long-term potential.Key Responsibilities:Design and develop .NET/WPF applications using Visual Studio.Work with Amazon Web Services and experience with Cloud based infrastructure...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States LogRocket Full time

    About LogRocketLogRocket is a leading provider of user experience analytics solutions. Our mission is to empower product managers and developers to create perfect user experiences. We're looking for a talented Senior Software Engineer to join our team and help us achieve this goal.We're a team of passionate engineers who care about building software with...

  • Senior Software Engineering Manager

    4 weeks ago

    Boston, Massachusetts, United States Nexagen Networks Inc Full time

    Job Title: Senior Software Engineering ManagerJob Summary:Nexagen Networks, Inc. is seeking a highly skilled Senior Software Engineering Manager to lead our software development team. As a technical leader, you will be responsible for providing strategic direction and vision for our software development projects, aligning with our company's overall goals and...

  • Senior Software Development Engineer

    1 month ago

    Boston, Massachusetts, United States KForce Full time

    Kforce is seeking a Senior Software Engineer (Quant, Fintech) with expertise in Python, object-oriented programming, and a background in mathematics and quantitative finance to join a growing firm in Boston, MA.This role involves developing high-impact solutions that enhance efficiency and support portfolio construction and investment strategy development.As...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States Worldpay Full time

    About the RoleWe are seeking a highly skilled Senior Software Engineer to join our team at Worldpay. As a key member of our engineering team, you will be responsible for designing, developing, and testing software for our high-volume, high-availability platform.You will collaborate with other internal teams to convert business requirements into technical...

  • Senior Software Engineering Manager

    4 weeks ago

    Boston, Massachusetts, United States Saviance Full time

    About the Role:Saviance is seeking a seasoned Senior Software Engineering Manager to lead our software development team in delivering cutting-edge solutions for the healthcare industry. As a key member of our leadership team, you will be responsible for driving the technical vision and strategy for our software development efforts.Key Responsibilities:Lead a...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States HexaQuEST Global, Inc. Full time

    Job Summary:HexaQuEST Global, Inc. is seeking a highly skilled Senior Software Engineer to join our team. As a key member of our development team, you will be responsible for designing, developing, and deploying complex software applications using Java, XML, Oracle, SQL, and web services.Key Responsibilities: Collaborate with cross-functional teams to...

  • Senior Software Engineer

    2 weeks ago

    Boston, Massachusetts, United States Planet Healthcare Full time

    We are seeking a highly skilled Senior Software Engineer to join our team and contribute to the development of our cloud infrastructure.The ideal candidate will have a deep understanding of cloud computing and the ability to design and implement scalable and secure infrastructure solutions.Responsibilities will include:Designing and implementing cloud...

  • Senior Java Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States Qualitative Financials Full time

    About the RoleWe are seeking a highly skilled Senior Software Engineer to join our Wallet team at Qualitative Financials. As a Senior Software Engineer, you will have the opportunity to develop your skills and collaborate with engineers across the company in a dynamic environment.You will work closely with technical leaders to build a secure crypto platform...

  • Senior Software Engineer

    4 weeks ago

    Boston, Massachusetts, United States Global Channel Management Full time

    About the JobGlobal Channel Management is seeking a highly skilled Senior Software Engineer to join our team. As a key member of our development team, you will be responsible for designing, developing, and maintaining our software applications.Key Responsibilities: Conduct software analysis and development, keeping up to date with constantly evolving...

  • Senior Software Reliability Engineer

    4 weeks ago

    Boston, Massachusetts, United States Klaviyo Full time

    We're looking for a skilled Senior Site Reliability Engineer to join our team at Klaviyo. As a key member of our Site Reliability Engineering team, you will be responsible for designing, building, and delivering software to improve the availability, scalability, and efficiency of our services.Key responsibilities include:Designing and developing systems and...