Senior Software Engineer, Fullstack

About the Role Webflow is expanding our engineering team in Argentina to build Webflow Cloud. In this Senior Software Engineer, Fullstack role, you'll design and implement scalable multi-tenant backend services and APIs for a new product that lets customers deploy fully operational web apps on Webflow-hosted domains. You’ll work in the Designer Dashboard and in our infrastructure that enables these features, and you’ll have the opportunity to share your team preference during the interview process; final placement will be confirmed after interviews. What You'll Do

• Design, and implement scalable multi-tenant backend services and APIs.
• Work with technologies such as Node.js, Javascript/Typescript, MongoDB, GraphQL, Apollo, Amazon Web Services EC2, S3, Lambdas, Kafka, and more.
• Demonstrable experience and expertise in multiple technical domains.
• Contribute to building and executing on functional strategy.
• Lead projects that directly contribute to team and engineering organization's deliverables.
• Produce maintainable, tested, performant, and scalable code.
• Author, collaborate on, and evaluate design documents.
• Influence technical designs and team-level prioritization as well as participate in technical solutions.
• Collaborate with product managers and designers in an autonomous, supportive team environment.
• Mentor junior engineers in technical skills and Webflow culture.
• 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. What We're Looking For
• Business-level fluency to read, write and speak in English.
• 5+ years developing and deploying web applications, with a proven track record of shipping code.
• Proficiency with Node.js and TypeScript and can write scalable services and APIs using Express.js, GraphQL, Apollo, and MongoDB.
• Ability to debug production issues across services and multiple levels of the stack.
• Proven experience building complex web systems.
• Experience with testing frameworks (e.g. Jest, Mocha, Playwright, Cypress).
• Comfortable working in an agile, safe-to-fail environment.
• Stay curious and open to growth; demonstrate a proactive embrace of AI, actively building and applying fluency in emerging technologies to elevate how we work, drive faster outcomes, and expand collective impact. Compensation & Benefits
• Equity (RSUs) in a growing, privately held company.
• Comprehensive health coverage (medical, dental, vision) for full-time employees and dependents, with premiums largely covered.
• 12 weeks paid parental leave for all parents; 6+ weeks additional paid leave for birthing parents.
• Flexible vacation, paid holidays, and a sabbatical program.
• Mental health resources, therapy and coaching.
• 401(k) with employer match (US) and support for retirement savings globally.
• Monthly stipends and localized support for work and wellness expenses.
• Annual WIN bonus program for full-time, permanent employees.
• Equal opportunity employer; inclusive, diverse global team.