We're seeking exceptional Backend Product Engineers to build the infrastructure powering the future of AI-driven email marketing. You'll design and scale systems that handle millions of emails, real-time content generation, and seamless integrations. Full-time position based in Barcelona with competitive compensation.
Migma.ai transforms email creation from a multi-day process into an instant task. Using AI that understands your brand and content sources, anyone can generate compelling, responsive emails without designers, developers, or marketing expertise. We're democratizing professional email marketing for millions of businesses worldwide. Thousands of companies and agencies are already using Migma.ai to slash costs, maximize ROI, and send emails that actually convert. And we're just getting started. We're a small, talent-dense team building a category-defining company from Barcelona. We value high ownership, rapid iteration, and ego-free collaboration. We seek people who care deeply, challenge assumptions, and are driven to build something transformative.
What you'll do

Design,



implement, and maintain backend services, APIs, and email delivery infrastructure
Build robust integrations with email service providers (SES, SendGrid, Resend) and handle deliverability challenges
Create scalable systems for template management, dynamic content generation, and subscriber management
Architect data pipelines for analytics, tracking opens/clicks, and managing unsubscribes
Own backend systems end-to-end: architecture, implementation, deployment, monitoring, and optimization
Collaborate with frontend, AI, and product teams to translate ambitious ideas into robust, scalable features
Implement caching strategies and optimize database queries for sub-second response times
Build webhook systems for real-time email events and third-party integrations
Shape our backend architecture, API standards, and technical strategy as we scale

What we're looking for

Based in Barcelona (on-

📌 Backend Product Engineer (Barcelona)
🏢 Migma
📍 Barcelona