Senior Frontend Engineer: AI-Driven React & Contentful

Valtech; Portugal; Hybrid; EUR 55,000 - 75,000; Full time

Benefits offered by this job

Remote and hybrid options

International mobility and development

Learning and professional development

Job summary

Valtech is seeking an experienced Senior Developer to lead the migration of an enterprise platform from Sitecore to Contentful, with React/TypeScript frontends, API integrations and modern headless architecture. The role emphasizes AI-first development and spec-driven delivery to accelerate migration while maintaining quality.

You will own complex migration tasks, contribute to CI/CD and automated testing, and collaborate with architects, QA and content teams.

Qualifications

• Strong commercial software engineering experience with React and TypeScript.
• Experience migrating or modernising frontend apps.
• Experience with headless CMS platforms, Contentful, and familiarity with Sitecore.
• Strong understanding of APIs, integration patterns and content modelling.
• Experience with backend development, migration scripting, or data transformation.
• Experience using AI-assisted development tools and spec-driven development approaches.
• Experience with automated testing, CI/CD and modern engineering practices.
• Ability to work independently, solve complex problems and influence technical decisions.
• Direct experience migrating Sitecore applications and content to Contentful.
• Experience with Next.js and CMS/DXP replatforming.
• Experience with multilingual, multisite or composable digital platforms.

Responsibilities

• Migrate Sitecore-backed apps to Contentful.
• Develop React/TypeScript frontend enhancements.
• Replace Sitecore components with Contentful-based solutions.
• Develop content migration tooling and automation processes.
• Implement Contentful content models and APIs.
• Ensure migrated apps meet performance, accessibility and quality standards.
• Apply AI-guided development with spec-driven tests.
• Collaborate with Lead Developers, architects, QA and content teams.
• Mentor less experienced developers through code reviews and sharing knowledge.
• Contribute to CI/CD and automated testing practices.

Skills

React

TypeScript

API integration

CI/CD

AI-assisted development

Frontend architecture

Problem solving

Independent worker

Tools

Contentful

Next.js

Sitecore

Job description

Valtech is seeking an experienced Senior Developer to lead the migration of an enterprise platform from Sitecore to Contentful, with React/TypeScript frontends, API integrations and modern headless architecture. The role emphasizes AI-first development and spec-driven delivery to accelerate migration while maintaining quality.

You will own complex migration tasks, contribute to CI/CD and automated testing, and collaborate with architects, QA and content teams.