Growth Engineer (Freelance / Part-time)

ODISEI MUSIC SL; l'Hospitalet de Llobregat; Presencial; EUR 30.000 - 45.000; A tiempo parcial

Descripción de la vacante

A leading music technology company is seeking a Growth Engineer to bridge marketing and technical execution. The role involves leading the migration from Mailchimp to Klaviyo and setting up multichannel customer journeys. Candidates should have experience in technical marketing, particularly with Klaviyo and e-commerce tools like Shopify. You will collaborate closely with the marketing team to implement and optimize automated marketing systems, ensuring effective tracking and data integration.

Servicios

Freelance or part-time arrangement

Competitive compensation

Flexible working culture

Direct impact on music education technology

Formación

• 4 years of experience in technical marketing growth engineering.
• Experience with Klaviyo for marketing automation.
• Strong understanding of tracking and attribution methods.
• Experience with integrating marketing and e-commerce tools.

Responsabilidades

• Lead migration from Mailchimp to Klaviyo.
• Prototype and test growth experiments.
• Oversee automated customer journeys across channels.
• Collaborate with the Data Engineer for data integration.

Conocimientos

Technical marketing growth engineering

Marketing automation

Klaviyo

Tracking and attribution

Shopify integration

JavaScript scripting

Creative problem solving

Data-driven mindset

Herramientas

GTM

GA4

CRM tools

Analytics platforms

Descripción del empleo

We're looking for a Growth Engineer: someone who loves bridging the gap between marketing creativity and technical execution.

You’ll be the go‑to person to unblock our marketing team, helping them turn ideas into scalable data‑driven campaigns that actually ship.

Your first mission: lead our migration from Mailchimp to Klaviyo and set up multichannel customer journeys across email, WhatsApp and our app (Odisei Play). From there you’ll help us build the foundation for smarter automated growth across our tools and data ecosystem.

You’ll work closely with our marketing team and our in‑house Automation & Data Systems Engineer to connect systems, clean up tracking and bring clarity on how our campaigns and efforts translate into sales.

Tasks

1. Growth Experimentation & E‑Commerce Ops

You’ll be the marketing team’s technical backbone, helping launch experiments fast while owning the performance and flexibility of our e‑commerce stack.

• Help prototype and test new ideas quickly: landing pages A/B tests or funnel experiments.
• Prototype and ship growth experiments that drive conversion and retention.
• Own the tech side of our e‑commerce setup (WooCommerce now Shopify soon).
• Make small store updates or work with our contractor on bigger improvements.
• Ensure our site is fast, trackable and ready for marketing at all times.
• Bring sharp creative ideas to boost performance across the funnel.

2. Marketing Systems & Automation

You’ll own the core tools and automations that bring our customer communications to life across all channels (social, email, WhatsApp, in‑app touchpoints...).

• Oversee the migration from Mailchimp to Klaviyo ensuring data integrity and proper segmentation.
• Define build and optimize automated customer journeys across email, WhatsApp and in‑app notifications.
• Set up dynamic flows for onboarding, re‑engagement, upsell and post‑purchase experiences.
• Help unify customer data across tools for smarter targeting and personalization.
• Bring fresh practical ideas for improving reach, conversion and retention through automation or creative use of data.

3. Analytics & Data Integration

You’ll help make sense of our marketing‑related data: connecting tools and surfacing the right signals to understand how we’re doing and where to improve.

• Collaborate with our Data Engineer to connect marketing, sales and app data.
• Define clear metrics and dashboards to measure marketing performance and ROI.
• Ensure tracking consistency across Shopify, Klaviyo, PostHog and ad platforms.
• Debug, validate and optimize GTM ad pixels and conversion events.

Requirements

Technical Skills

• 4 years experience in technical marketing growth engineering or marketing automation.
• Hands‑on experience and proven results with marketing automation tools like Klaviyo (flows, segmentation, API integration).
• Strong understanding of tracking and attribution (GTM, GA4, Meta / LinkedIn pixels, UTM logic).
• Experience setting up and integrating marketing and e‑commerce tools (Shopify, Klaviyo, GTM, CRM, analytics etc.).
• Comfortable writing small scripts or building UI prototypes (preferably in JavaScript).
• Understanding of email deliverability, multichannel marketing and funnel logic.
• Familiarity with B2C/B2B e‑commerce and SaaS funnels (bonus if you’ve worked with both!).
• Scripting and automation experience a plus (JS, Python, or tools like n8n, Zapier, Make).
• Creative, curious and comfortable experimenting with new tools or workflows.

Mindset & Qualities

• Growth‑hacker mindset: You think outside the box and use smart, sometimes unconventional strategies to reach the right audience.
• Impact‑obsessed: You want everyone in the world to know how to achieve something amazing quickly.
• Systems thinker: You see how data tools and marketing flows connect.
• Pragmatic builder: You prefer something done and useful today over perfect in theory.
• Cross‑functional collaborator: You speak both marketing and tech.
• Curious and proactive: You bring ideas to the table, not just tasks to deliver.
• Data‑driven: You love tracking real impact, what works, what doesn’t and why.
• Music‑aware: You don’t need to be a musician but you understand the magic of music and want to help others experience it too.

Benefits

• Freelance or part‑time (23 days / week to start).
• Competitive compensation.
• Can be in‑person / hybrid in Barcelona or remote in Europe.
• Flexible working culture.
• Direct impact on the future of music education technology.
• Collaborative and innovation‑driven environment.

At Odisei Music we’re building the future of wind instruments, making it easier, smarter, and more fun to learn and play.

You’ll be joining a multidisciplinary team of musicians, engineers, and designers who care deeply about quality and innovation.

This is a freelance role with potential to grow into a longer‑term collaboration if we’re a great fit.

You’ll work directly with the CTO and marketing team and have a clear impact on how we reach and engage musicians worldwide.