Frontend Product Engineer

Migma; Barcelona; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Competitive salary

Modern office in Barcelona

Professional growth opportunities

Work with AI technology

High impact role

Job summary

Migma.ai seeks exceptional Frontend Product Engineers to revolutionize email marketing with AI from our Barcelona office. You will work across the stack to build features that empower businesses to craft professional, personalized email campaigns quickly.

As a core member of a small, ambitious team, you will own frontend features, optimize performance, implement SSR, and collaborate with backend/AI teams to surface dynamic content and brand intelligence. Fluency in English is essential.

Qualifications

• 5+ years of frontend engineering experience building scalable web apps.
• Strong expertise in React/TypeScript and modern frontend tooling.
• Proven ability to work with SSR, SEO, and performance optimization.
• Experience with JSON-LD and structured data integration.
• Ability to integrate with backend APIs and deliver pixel-perfect UIs.
• Fluent English communication and a portfolio of live projects.

Responsibilities

• Develop and maintain features in React/TypeScript/Next.js with fast, accessible UIs.
• Implement SSR strategies for optimal load times and SEO.
• Structure data with JSON-LD for search visibility.
• Build the visual email builder, templates, and live preview.
• Collaborate with backend, AI, and product teams on personalization.
• Drive frontend lifecycle from planning to deployment and iteration.
• Uphold frontend best practices, accessibility, and performance standards.

Skills

React

TypeScript

Next.js

SSR

JSON-LD

APIs

Accessibility

English communication

Tools

Github Actions

Grafana

OTEL

Terraform

Cloudflare

GCP

AWS

MJML

Email rendering engines

Job description

We're seeking exceptional Frontend Product Engineers to revolutionize email marketing through AI. You'll work across our entire stack to build features that empower businesses to create professional, personalized email campaigns in minutes. 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

• Build and maintain features in React/TypeScript/Next.js, ensuring blazing-fast performance and seamless user experiences
• Implement SSR strategies for optimal load times and SEO performance
• Structure data with JSON-LD for better search visibility and integration capabilities
• Develop our visual email builder, template management system, and real-time preview capabilities
• Collaborate with backend, AI, and product teams to surface dynamic content, brand intelligence, and personalization features
• Create interfaces that make complex features (auto-updating templates, AI content generation, multi-project management) feel simple
• Drive the complete frontend lifecycle: technical planning, implementation, deployment, and continuous improvement
• Champion frontend best practices, performance optimization, and accessibility standards

What we're looking for

• Based in Barcelona (on-site/hybrid working model)
• 5+ years of experience building and shipping modern, high-quality frontend products
• Deep expertise in React/TypeScript with strong command of state management, component architecture, and performance optimization
• Experience with email rendering quirks, responsive design, and cross-client compatibility
• Strong expertise in Next.js and Server-Side Rendering (SSR) for optimal performance and SEO
• Experience with JSON-LD and structured data implementation
• Proven ability to integrate with backend APIs and collaborate with design/AI teams to deliver pixel-perfect, intuitive experiences
• Strong product sense with attention to UX details, accessibility, and the unique challenges of email design
• Ability to balance speed with polish, knowing when to ship MVPs and when to perfect features
• Fluent English communication skills (written and spoken) - essential for team collaboration
• Portfolio of live projects is mandatory - Please do not apply without a portfolio
• Email Tech: React Email, MJML, email rendering engines
• Backend: Node.js, Python, Golang and Rust
• Cloud: Cloudflare, GCP, AWS, Many LLM providers
• DevOps & Tooling: Github Actions, Grafana, OTEL, infra-as-code (Terraform)

What We Offer

• Highly competitive salary - We believe in compensating top talent accordingly
• Full-time position based in our Barcelona office
• Work with cutting-edge AI technology in a rapidly growing market
• High impact role in a small, ambitious team
• Professional growth opportunities as we scale
• Modern office in the heart of Barcelona

How We Hire

• Submit a brief application and have an intro call with our team
• Complete a practical frontend challenge (building a mini email editor component)
• Demonstrate your problem-solving approach in technical interviews
• Walk us through your most impressive frontend project
• Meet the team and discuss how you can help shape Migma.ai's future

About Your Application

Please submit your application in English - it's our primary working language. IMPORTANT: Include your portfolio with live project links - Applications without portfolios will not be considered. Please include links to your Stack Overflow, GitHub, any designs or projects you're proud of, and anything else that showcases your skills. Include examples of complex UIs you've built, especially any email or content creation tools. We value all backgrounds and experiences - if you're excited about transforming email marketing, we want to hear from you.