Lead Developer (Contentful)

Valtech; Portugal; Hybrid; EUR 90,000 - 140,000; Full time

Job summary

Valtech is seeking a Lead Developer in Portugal to own the engineering delivery of a Sitecore-to-Contentful migration, covering both content and application migration. You will lead the development team, set engineering standards, and ensure a scalable, maintainable Contentful-based solution.

Ideally you are an AI-first technical leader who embeds AI-native and spec-driven development practices, improving delivery efficiency while upholding quality, security, and accountability.

Qualifications

• Extensive software engineering background with leadership of complex digital platforms.
• Proven track record in enterprise CMS migrations, replatforming or headless CMS implementations.
• Deep hands-on experience with Contentful, Sitecore and migration/integration challenges.
• Strong knowledge of React, TypeScript, API-driven architectures and modernisation.
• Experience leading teams, making technical decisions and ensuring delivery quality.
• Practical use of AI-assisted development and adoption of AI-native practices.

Responsibilities

• Lead the technical implementation of the Sitecore-to-Contentful migration across content, applications and integrations.
• Collaborate with architects to shape migration options, Contentful patterns and technical decisions.
• Guide migration and modernisation of existing apps, including React frontends and services.
• Define content modelling, transformation, migration automation and validation approaches.
• Coordinate engineering activities, manage dependencies and delivery risks.
• Remain hands-on for complex implementation and critical problem-solving.
• Champion an AI-first engineering mindset and spec-driven development practices.
• Establish security, quality and review practices for AI-generated code and migrations.

Skills

CMS migrations

Sitecore

Contentful

React

TypeScript

API architectures

AI-assisted development

Leadership

CI/CD

Tools

Next.js

Sitecore

Contentful

Sitecore JSS

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 Lead Developer to take technical ownership of the engineering delivery of an enterprise Sitecore-to-Contentful migration, covering both content and application migration.

You will lead the development team, establish engineering standards and ensure successful delivery of a scalable, maintainable Contentful-based solution.

Ideally you are also an AI-first technical leader who can embed AI-native and spec-driven development practices into everyday engineering, using emerging tooling to improve delivery efficiency while maintaining technical quality, security and accountability.

Key Responsibilities

Technical Leadership and Migration Delivery

• Lead the technical implementation of the Sitecore-to-Contentful migration across content, applications and integrations.
• Work with architects to shape migration options, Contentful implementation patterns and technical decisions.
• Guide the migration and modernisation of existing applications, including React frontends and supporting services.
• Define approaches for content modelling, transformation, migration automation and validation.
• Coordinate engineering activities, resolve complex technical challenges and manage dependencies and delivery risks.
• Remain hands‑on where required, particularly for complex implementation, technical spikes and critical problem‑solving.

AI-First Engineering Leadership

• Champion an AI-first engineering mindset, encouraging the team to proactively use AI to improve software delivery.
• Establish practical spec-driven development approaches, ensuring clear, testable specifications guide implementation and validation.
• Identify opportunities to apply AI to Sitecore analysis, content mapping, migration automation, code modernisation and testing.
• Guide developers in the effective use of AI coding assistants and automated engineering workflows.
• Establish appropriate review, security and quality practices for AI-generated code and migration outputs.
• Drive experimentation, knowledge sharing and measurable improvements in team productivity through AI adoption.

Engineering Quality and Stakeholder Engagement

• Own engineering quality, implementation consistency and technical delivery outcomes.
• Establish standards for code quality, automated testing, CI/CD, migration validation and release readiness.
• Lead technical planning for migration, cutover, rollback and post‑migration support.
• Provide technical direction, mentoring and coaching to developers.
• Act as a trusted technical contact for client stakeholders, architects and delivery teams.
• Communicate technical risks, trade‑offs and recommendations clearly, aligning decisions with business objectives.

Essential Skills and Experience

• Significant engineering experience, including technical leadership of complex digital platform deliveries.
• Proven experience with enterprise CMS migrations, replatforming or major headless CMS implementations.
• Strong practical knowledge of Contentful, Sitecore and associated migration and integration challenges.
• Strong understanding of React, TypeScript, API-driven architectures and application modernisation.
• Experience leading engineering teams, making technical decisions and assuring delivery quality.
• Practical experience with AI-assisted software development and the ability to drive adoption of AI-native, spec-driven engineering practices.
• Strong knowledge of automated testing, CI/CD, release processes and technical risk management.
• Strong stakeholder communication, consultancy and technical leadership skills.
• Previous technical leadership of a Sitecore-to-Contentful migration.
• Experience with Next.js, Sitecore JSS and composable architecture.
• Experience using AI to accelerate complex migrations, legacy application modernisation or engineering workflows.
• Experience with multilingual, multisite or enterprise content platforms.

What Success Looks Like

• Successfully leads delivery of the Contentful migration across content and applications.
• Establishes clear technical direction, engineering standards and accountability within the team.
• Embeds AI-native development practices that demonstrably improve delivery efficiency and quality.
• Proactively manages technical risks and builds confidence with stakeholders.
• Develops team capability through technical leadership, coaching and continuous improvement.

C5 Expectation: A technical leader accountable for engineering delivery, technical quality and team effectiveness, working closely with Architects while driving implementation and technical decisions across the development team.

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 aPermanent 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.