{"@context":"https://schema.org","@type":"JobPosting","directApply":"https://schema.org/False","title":"Senior Engineer - Growth Marketing","description":"

About the role

We're looking for a Senior Frontend Engineer to join our Growth Marketing team. This is a hands-on engineering role building the web experiences and systems that help Buffer grow.

The work spans building features and pages across buffer.com - interactive tools, benchmarks, referral systems, conversion flows - along with the technical implementation behind them: integrations with marketing tools, analytics and tracking systems, SEO implementations, and backend logic that powers our marketing features.

We need someone who's comfortable across the full frontend scope - strong with React and modern web development, but also capable of diving into backend logic, connecting third-party APIs, debugging tracking pipelines, and figuring out what they don't know.

You'll collaborate closely with Simon (Director of Marketing), David (Senior Design Engineer), and Kate (Senior Designer). The team values pace and iteration — we ship quickly, learn from real usage, and improve as we go. But we also care about craft — noticing the UX details and maintaining standards while keeping momentum.

What you’ll do

Lead growth engineering projects, like implementing a localization framework to support international audiences, building referral program logic and attribution systems, rebuilding our tracking implementation to improve accuracy and reliability. You’ll own projects from concept to launch, working closely with marketing, design, and other engineers.
Build features on Buffer's marketing site — ship landing pages, interactive tools, and conversion flows that help people discover and try Buffer. Create benchmarks, calculators, and utility content that educate users and drive engagement.
Shape marketing platform capabilities by building systems and frameworks that let the team move faster. Create A/B testing infrastructure, develop programmatic page generation for SEO/AEO, implement content management patterns, and build reusable components that make future projects easier to ship.
Drive experimentation and optimization — implement A/B tests, optimize conversion funnels, and help the team learn faster through code. Set up experiments, validate results, and iterate based on what we learn. Balance moving quickly with maintaining quality.
Improve foundations by maintaining integrations with our marketing technology stack (Segment, GTM, Mixpanel, BigQuery), upgrading dependencies, optimizing performance, and ensuring accessibility. You'll also participate in our on-call rotation and contribute to ongoing system health — fixing bugs, addressing security vulnerabilities, and other improvements that keep buffer.com running smoothly.
Contribute to shaping engineering culture by pairing with other engineers, reviewing code, sharing knowledge about growth systems and marketing engineering patterns, and helping level up how we approach frontend work at Buffer.

Helpful skills and experience

You have strong frontend foundations — solid experience with React, TypeScript, and modern web development. Our site runs on Next.js, but we value adaptability and curiosity over specific stack experience.
You're comfortable working across the stack when needed — writing backend logic, building API routes, getting data from various external systems, and connecting third-party integrations together.
You've worked with marketing or growth teams and are comfortable with SEO, analytics, A/B testing, and conversion optimization. You've likely built referral systems, programmatic pages, or conversion funnels, and you know how to set up tracking, validate implementations, and measure impact accurately.
You're comfortable navigating ambiguity and thinking in systems — you bring clarity and ask good questions to move ideas forward even when requirements aren't fully defined. You look at the full system, understanding how different technologies and goals connect, and build things that can scale and improve holistically rather than just solving point problems.
You have a personal stake in the world of content creation, maybe you’ve run a newsletter, built an audience on social media, or regularly share your own work online. You’ve used Buffer before and care about the experience of planning, creating, and publishing content.
You balance craft with pace — you ship quickly and learn from real usage, but you also care about quality. You notice UX details, maintain accessibility standards, think about performance, and understand when to polish versus when to iterate.
You thrive in remote, async environments — you communicate clearly, support your teammates, and don't wait for permission to make progress. You work effectively across marketing, design, and engineering, and can explain technical decisions to non-technical stakeholders.
You're fluent with AI tools and use them to work with more leverage and improve your efficiency. Bonus points if you've also integrated AI into user-facing marketing features at scale (like generating personalized content, automating asset creation, or building intelligent systems).
You've likely been doing this for at least 5+ years, but depth of experience and impact matter more than a specific number of years.

Our tech stack

We use Next.js v15+ with React and TypeScript for buffer.com (currently using Pages router, planning to migrate to App router). We use Express middleware for some routing (planning to migrate to Next.js middleware).
Styling with CSS Modules and Motion for animations, and use Radix UI and Base UI for accessible components (gradually migrating to Base UI as it evolves) and data visualizations using Recharts.
Our marketing technology stack includes Segment, Google Tag Manager, Mixpanel, and BigQuery for tracking and analytics.
We pull content and data from Ghost CMS (blog), Redash, Notion, Google Sheets, and various external APIs.

Interview process

Here's what our hiring process for this role is like.

Application. When submitting your application and resume, tell us why you want to join Buffer and take your time. This is your chance to make a strong first impression.
- Please note: While we have several engineering roles open, we recommend applying to only one role - just choose one that resonates with you the most. If during our review or interviews we think you'd be great for a different position, we'll re-route your application internally.
Role interview. Chat with the hiring manager and a peer engineer to understand what it takes to work at Buffer. This is an opportunity for both sides to get to know each other and determine whether our expectations align.
Code review assignment. We'll send you an asynchronous assignment to review a pull request, to help us understand how you think about code and communicate technical ideas.
Technical interviews. Interview with a couple of engineers from Buffer focused on your technical experience and approach. Additionally, for senior roles, we'll have an additional conversation about your leadership, how you work with teams, and how you approach the broader challenges that come with this level.
Meet the CEO. At the very end, you will have the opportunity to meet with Joel Gascoigne, our CEO. This is a great chance for you to gain a deeper understanding of Buffer's strategy, values, and work processes.
Collaboration period. This is experimental stage for us where you would work with us on a real project over 2 days (fully paid). The goal is to see how it feels to work in the team, both for us and for you. You'll meet a few bufferoos, we'll kickoff the project, and invite you to a Slack and you'll collaborate with the team on it.
Offer. We wrap it up with an offer and discuss the final details. We would align on the last bits before we make you part of the Buffer team 💛

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