Senior Software Engineer, Distributed Systems

At Webflow, our mission is to bring development superpowers to everyone. Webflow is a Website Experience Platform (WXP) that empowers modern marketing teams to visually build, manage, and optimize stunning websites. With AI-driven personalization baked in, Webflow enables teams to significantly boost conversion rates, translating directly into measurable business growth. From independent designers and creative agencies to Fortune 500 companies, millions worldwide use Webflow to be more nimble, creative, and collaborative.

We’re looking for a Senior Software Engineer to help develop and scale Webflow Optimize products, our AI-powered website optimization and personalization engine. This role is essential in designing high-performance systems that dynamically optimize user experiences. You will work with large-scale data processing, distributed computing to improve website conversion rates and personalization at scale. We’re a fast-moving, data-driven team with deep experience in personalization, ML infrastructure, and large-scale analytics. 

About the role:

• Location: Remote-first (United States or BC & ON, Canada)
• Full-time
• Permanent 
• Exempt
• Reporting to the Senior Engineer Manager
• The cash compensation for this role is tailored to align with the cost of labor in different geographic markets. We've structured the base pay ranges for this role into zones for our geographic markets, and the specific base pay within the range will be determined by the candidate’s geographic location, job-related experience, knowledge, qualifications, and skills.
  • Zone A: $158,000 - $218,000
  • Zone B: $149,000 - $205,000
  • Zone C: $139,000 - $192,000
  • CAD 180,000 -CAD 248,000
• United States(all figures cited below are in USD and pertain to workers in the United States)
• Canada (figures cited below are in CAD and pertain to workers in ON & BC, Canada)

This role is also eligible to participate in Webflow's company-wide bonus program. Target amounts are a percentage of base salary and vary by career level. Payouts are based on company performance against established financial and operational goals. 

Please visit our Careers page for more information on which locations are included in each of our geographic pay zones. However, please confirm the zone for your specific location with your recruiter.

As a Senior Backend Engineer, you’ll: 

• Architect, design, and implement scalable multi-tenant backend services and APIs.
• Work on technologies such as Java, MongoDB, Druid, Airflow, Amazon Web Services EC2, S3, Lambdas, RDS, and more.
• Design and implement data processing pipelines that includes ingestion, transformation, storage, and query. 
• Work with Druid and other data stores to efficiently integrate and query large-scale event data.
• Ensure system scalability and reliability by optimizing distributed architectures, caching strategies, and event-driven systems for low-latency performance.
• Lead projects that directly contribute to team and engineering organization's deliverables.
• Produce and elevate the quality of maintainable, tested, performant, and scalable code.
• Build and maintain unit and integration tests.
• Author, collaborate on, and evaluate design documents.
• Influence technical designs and team-level prioritization as well as participate in technical solutions.
• Collaborate with software engineers, product managers, and designers in an autonomous, supportive team environment.
• Mentor other engineers in technical skills, best practices, and quality.
• Participate in engineering citizenship activities such as co-authoring engineering blogs, strengthening and improving our hiring processes, and leading internal hackathon teams.

In addition to the responsibilities outlined above, at Webflow we will support you in identifying where your interests and development opportunities lie and we'll help you incorporate them into your role.

 About you:

You’ll thrive in this role if you:

• Have 5+ years developing and deploying complex web applications, with a proven track record of shipping performant quality code.
• Proficiency in Java, Python, or another high performance back-end language.
• Experience working with high-performance real-time analytics, event processing, and large-scale distributed systems. 
• Strong data engineering skills, including experience with relational and non-relational databases.  
• Knowledge of REST APIs and event-driven architectures.
• Can debug production issues across services and multiple levels of the stack.
• Experience with testing frameworks (e.g. Jest, Mocha, Playwright, Cypress, TestNG). 

Bonus Skills (Nice-to-Have)

• Experience with Apache Spark, Airflow, or TensorFlow.
• Familiarity with Kafka or other event streaming platforms.
• Prior experience working on large-scale personalization, experimentation, or recommendation systems.

Our Core Behaviors:

• Obsess over customer experience. We deeply understand what we’re building and who we’re building for and serving. We define the leading edge of what’s possible in our industry and deliver the future for our customers
• Move with heartfelt urgency. We have a healthy relationship with impatience, channeling it thoughtfully to show up better and faster for our customers and for each other. Time is the most limited thing we have, and we make the most of every moment
• Say the hard thing with care. Our best work often comes from intelligent debate, critique, and even difficult conversations. We speak our minds and don’t sugarcoat things — and we do so with respect, maturity, and care
• Make your mark. We seek out new and unique ways to create meaningful impact, and we champion the same from our colleagues. We work as a team to get the job done, and we go out of our way to celebrate and reward those going above and beyond for our customers and our teammates

Benefits & wellness

• Equity ownership (RSUs) in a growing, privately-owned company
• 100% employer-paid healthcare, vision, and dental insurance coverage for full-time employees (working 30+ hours per week) and their dependents. Full-time employees may also be eligible for voluntary insurance options where applicable in the respective country of employment
• 12 weeks of paid parental leave for both birthing and non-birthing caregivers, as well as an additional 6-8 weeks of pregnancy disability leave for birthing parents to be used before child bonding leave (note: where local requirements are more generous, employees receive the greater benefit); full-time employees also have access to family planning care and reimbursement
• Flexible PTO for all locations and sabbatical program
• Access to mental wellness and professional coaching, therapy, and Employee Assistance Program
• Monthly stipends to support work and wellness
• 401k plan or pension schemes (in countries where statutorily required), and other financial wellness benefits, like CPA and financial advisor coveragE

Remote, together

At Webflow, equality is a core tenet of our culture. We are an Equal Opportunity (EEO)/Veterans/Disabled Employer and are committed to building an inclusive global team that represents a variety of backgrounds, perspectives, beliefs, and experiences. Employment decisions are made on the basis of job-related criteria without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other classification protected by applicable law. Pursuant to the San Francisco Fair Chance Ordinance, Webflow will consider for employment qualified applicants with arrest and conviction records.

Stay connectedNot ready to apply, but want to be part of the Webflow community? Consider following our story on our Webflow Blog, LinkedIn, X (Twitter), and/or Glassdoor. 
Please note:

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Upon interview scheduling, instructions for confidential accommodation requests will be administered.

To join Webflow, you'll need a valid right to work authorization depending on the country of employment.

If you are extended an offer, that offer may be contingent upon your successful completion of a background check, which will be conducted in accordance with applicable laws. We may obtain one or more background screening reports about you, solely for employment purposes.

For information about how Webflow processes your personal information, please review Webflow’s Applicant Privacy Notice.