Senior Developer (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

Why Valtech? We’re the experience innovation company - a trusted partner to the world’s most recognized brands. To our people we offer growth opportunities, a values -driven culture, international careers and the chance to shape the future of experience.

The opportunity

At Valtech, you’ll find an environment designed for continuous learning, meaningful impact, and professional growth. Whether you're pioneering new digital solutions, challenging conventional thinking or building the next generation of customer experiences, your work will help transform industries.

We are looking for an experienced, hands‑on Senior Developer to support the migration of an enterprise digital platform from Sitecore to Contentful.

The role involves both content migration and the migration of existing applications, React/Typescript development, API integrations and modern headless architectures.

We are also looking for someone with an AI‑first mindset who embraces AI‑assisted and spec‑driven development to improve delivery speed, quality and consistency, while retaining ownership of technical judgement and code quality.

Key Responsibilities

Application and Content Migration

• 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.

Engineering Quality and Collaboration

• 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.

Essential Skills and Experience

• Strong commercial software engineering experience, particularly with React and TypeScript.
• Experience migrating, modernising or refactoring existing 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.
• Direct experience migrating Sitecore applications and content to Contentful.
• Experience with Next.js, Sitecore JSS or CMS/DXP replatforming.
• Experience applying AI to content analysis, migration automation, code transformation or test generation.
• Experience with multilingual, multisite or composable digital platforms.

If you do not meet all the listed qualifications or have gaps in your experience, we still encourage you to apply. At Valtech, we recognize that talent comes in many forms, and we value diverse perspectives and a willingness to learn.

Commitment to reaching all kinds of people

We design experiences that work for all kinds of people - and that starts with our own teams. At Valtech, we’re intentional about building an inclusive culture where everyone feels supported to grow, thrive and achieve their goals. No matter your background, you belong here. Explore our Diversity & Inclusion site to see how we’re creating a more equitable Valtech for all.

The benefits

This is a Permanent position based in Portugal.

Beyond a competitive compensation package, we offer:

• Flexibility, with remote and hybrid work options (country‑dependent)
• Career advancement, with international mobility and professional development programs
• Learning and development, with access to cutting‑edge tools, training, and industry experts

Our benefits are tailored to each location. Your Talent Partner will provide full details during the hiring process.

About Valtech

Valtech is the experience innovation company that exists to unlock a better way to experience the world. By blending crafts, categories, and cultures, we help brands unlock new value in an increasingly digital world.

At the intersection of data, AI, creativity, and technology, we drive transformation for leading organizations, including L’Oréal, Mars, Audi, P&G, Volkswagen Dolby, and more.

At Valtech, we don’t just talk about transformation. We make it happen. Our people are the heart of our success, and we foster a workplace where everyone has the support to thrive, grow and innovate.

Are you ready to create what’s next? Join us.