Growth Engineer

Jobtailor; Barcelona; Presencial; EUR 75.000 - 110.000; Jornada completa

Descripción de la vacante

Jobtailor is seeking a senior frontend engineer to migrate our marketing site and customer funnels from Webflow to a fast, self-hosted Next.js/Vercel frontend with Payload CMS. You will architect dynamic landing templates for VIP accounts, ensuring zero layout shifts and flawless asset integration.

You will implement in-platform tracking, connect event data to Salesforce, and maintain growth experimentation infra, while leading server-side A/B tests to optimize enterprise demo bookings.

Formación

• Extensive experience building from scratch without detailed specs.
• Deep mastery of React, Next.js App Router, TypeScript, and Node.js.
• Experience with modern headless CMS (Payload CMS/Strapi) and hosting on Vercel.
• Familiar with in-platform tracking and CRM data integration (PostHog, Salesforce).

Responsabilidades

• Lead migration of marketing site and funnels from Webflow to Next.js/Vercel.
• Create dynamic landing templates for VIP accounts with zero layout shifts.
• Implement robust in-platform tracking to reveal data gaps.
• Pipe event data and traits from PostHog into Salesforce CRM with clean payloads.
• Build and maintain growth experimentation infrastructure.
• Design and analyze server-side A/B tests to boost conversions.

Conocimientos

React

Next.js

TypeScript

Node.js

Payload CMS

Strapi

Vercel

Edge Middleware

PostHog

Mixpanel

Salesforce

API integration

Herramientas

Payload CMS

Strapi

Vercel

Edge Functions

Descripción del empleo

Responsibilities

• Lead the engineering effort to migrate our marketing site and customer funnels out of Webflow and into an ultra‑fast, self‑hosted frontend built on Next.js/Vercel and Payload CMS.
• Architect dynamic, programmatic landing page templates for high‑value VIP accounts that pull tailored assets, logos, and account metrics flawlessly without layout shifts or visual flicker.
• Implement best‑in‑class, in‑platform tracking that diagnoses existing data gaps and implements robust tracking so our sales teams have total visibility into what accounts are doing inside our platform.
• Seamlessly pipe event data and user traits from PostHog and outbound tooling directly down into Salesforce CRM, optimizing API payloads to maintain immaculate CRM data hygiene.
• Build and maintain our growth experimentation infrastructure.
• Design, launch, and analyze complex server‑side A/B tests that target key conversion loops and drive enterprise demo bookings.

Requirements

• Strong track record of building things entirely on your own from scratch. You don't wait for a perfectly detailed specification document—you see a gap in our process or tracking and you fix it.
• Deep technical mastery of React, Next.js (App Router), TypeScript, and Node.js.
• Direct experience building with modern, open‑source headless content management systems (ideally Payload CMS, Strapi, or equivalent developer‑first tools).
• Strong familiarity hosting applications on Vercel and utilizing Edge Middleware, Edge Functions, or CDN‑level routing to achieve 0ms‑latency personalization.
• Advanced knowledge of event tracking architectures using tools like PostHog, Mixpanel, or Segment.
• Experience managing data flows into enterprise CRMs (Salesforce) is highly desired.