Senior Dev – Sitecore to Contentful Migration (AI‑First)

F5 Remote Jobs; Portugal; Remote; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Remote/hybrid options

International mobility & professional 

Cutting-edge tools & learning programs

Job summary

Valtech is seeking a Senior Developer (Contentful) in Portugal to lead migration from Sitecore to Contentful and shape modern frontend solutions using React and TypeScript. The role combines content migration, API integration and headless architecture with an AI-first mindset to boost delivery speed and quality.

You will own migration tooling, content models and integration patterns, while collaborating with architects, QA and content teams to ensure performance and accessibility.

Qualifications

• Strong commercial software engineering experience with React and TypeScript.
• Experience migrating, modernising or refactoring frontend applications.
• Practical experience with headless CMS platforms, preferably Contentful, and an understanding of Sitecore.
• Strong understanding of APIs, integration patterns and content modelling.
• Experience with backend development, migration scripting or data transformation.
• Practical experience using AI-assisted development tools and an understanding of spec-driven development approaches.
• Experience with automated testing, CI/CD and modern engineering practices.
• Ability to work independently, solve complex problems and influence technical implementation decisions.

Responsibilities

• Migrate and modernise existing Sitecore-backed applications to work with Contentful.
• Develop, refactor and enhance frontend applications using React and TypeScript.
• Replace Sitecore-specific dependencies, components and integrations with Contentful-compatible solutions.
• Develop content migration tooling, scripts and automated transformation processes.
• Implement Contentful content models, API integrations and content delivery patterns.
• Ensure migrated applications maintain functionality, performance, accessibility and quality.
• Adopt an AI-first mindset, proactively identifying opportunities to accelerate development, migration and problem-solving using AI.
• Apply spec-driven development, using clear technical specifications, acceptance criteria and tests to guide AI-assisted implementation.
• Leverage AI to support Sitecore analysis, schema mapping, migration script generation, application refactoring and validation.
• Use AI coding assistants effectively while reviewing, testing and taking accountability for generated outputs.
• Share AI-enabled development practices and contribute to improving team productivity.
• Independently own complex development tasks and significant migration components.
• Write clean, maintainable, well-tested code and contribute to CI/CD and automated testing.
• Identify technical risks, dependencies and opportunities for improvement.
• Collaborate with Lead Developers, architects, QA and content teams.
• Support less experienced developers through mentoring, code reviews and knowledge sharing.

Skills

React

TypeScript

APIs

AI-assisted development

CI/CD

Contentful knowledge

Sitecore understanding

Problem solving

Tools

Contentful

Next.js

Headless CMS

Sitecore

Job description

Valtech is seeking a Senior Developer (Contentful) in Portugal to lead migration from Sitecore to Contentful and shape modern frontend solutions using React and TypeScript. The role combines content migration, API integration and headless architecture with an AI-first mindset to boost delivery speed and quality.

You will own migration tooling, content models and integration patterns, while collaborating with architects, QA and content teams to ensure performance and accessibility.