Senior Full Stack Developer -Marketplace

Trustoo; Amsterdam; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work in Amsterdam office

Competitive salary

€1,000 training budget

Pension scheme

Fresh lunches

3 days in office

Job summary

Trustoo in Amsterdam is seeking a Senior Full-Stack Developer with a strong frontend focus (React.js and Next.js) to own the consumer marketplace experience used by thousands daily.

You will collaborate with Product, Design and Data teams to ship high-quality frontend features, optimize UX, performance and scalability, and contribute to backend work in CakePHP when needed.

Qualifications

• 4+ years of professional experience as a full-stack or frontend-focused software developer.
• Strong experience with JavaScript, React.js and modern frontend development.
• Experience with Next.js or strong interest in Next.js.
• Ability to build responsive, performant consumer-facing web applications.
• Experience working with backend applications and APIs; PHP experience is a plus.
• Cares about UX and translating designs into polished product experiences.
• Is comfortable with experimentation, analytics and A/B testing.
• Experience building AI agents or orchestrations is a plus.
• Can independently take ownership of complex projects from idea to production.
• Enjoys working closely with product managers, designers, analysts and other engineers.

Responsibilities

• Build and improve the consumer-facing marketplace experience on Trustoo.
• Develop high-quality React.js and Next.js applications and components.
• Improve journeys such as search, provider discovery, request flows, matching and comparison.
• Build experiments and A/B tests to improve conversion and user experience.
• Work on performance, responsiveness and scalability across web and mobile.
• Develop and maintain APIs and backend services in CakePHP where needed.
• Translate product and design concepts into production-ready solutions.
• Use AI-assisted development tools to increase development speed and quality.
• Take ownership of projects from technical design through implementation, testing and release.
• Work closely with Product, Design, Data and Marketing to continuously improve the marketplace.

Skills

JavaScript

React.js

Next.js

Frontend development

API integration

UX

AI concepts

Ownership

Collaboration

Testing & analytics

PHP

CakePHP

AWS

GitHub

Tools

CakePHP

AWS

GitHub

Job description

Are you an experienced full-stack developer with a strong focus on frontend development? Do you enjoy building fast, intuitive consumer products with React.js and Next.js? And are you looking for a senior role where you can take ownership of the experience used by hundreds of thousands of consumers?

Have you ever searched online for a painter, moving company, or accountant? Finding the right local professional can still be surprisingly difficult.

That’s why we started Trustoo in 2019. Trustoo is the online marketplace for local services, helping consumers easily find and compare the best local professionals. Think Booking.com or Tripadvisor, but for local services.

Today, Trustoo connects consumers with more than 300,000 local businesses across the Netherlands, Germany, Belgium and Spain. Our team of 80+ colleagues is continuously improving and scaling the platform.

Why your role is crucial for Trustoo

Pieter, co-founder: “The marketplace experience is at the heart of Trustoo. Every day, thousands of consumers use our platform to find the right professional. Making that journey faster, easier and more effective directly impacts both our customers and our growth.”

As a Senior Full-Stack Developer in our Marketplace Squad, you will have a strong focus on the demand side of our marketplace: everything consumers experience from the moment they land on Trustoo until they find, compare and connect with the right professional.

You’ll work on high-impact parts of the product such as search, category and location pages, request flows, matching experiences, provider listings, messaging, conversion funnels and experimentation.

Although this is a full-stack role, the emphasis is on building high-quality frontend experiences in React.js and Next.js. You’ll also work on the underlying APIs and backend logic in CakePHP whenever needed.

We’re looking for someone who combines strong engineering skills with product thinking. Someone who cares about UX, performance and conversion, challenges solutions when they can be better, and is comfortable owning projects from idea to production.

You’ll work closely with product managers, designers, analysts and marketers. Because product and engineering are fully in-house, we can experiment quickly, measure what works and continuously improve the marketplace.

Our Tech Stack

• Front-end: React.js, Next.js, JavaScript




• Back-end: PHP, CakePHP




• Cloud infrastructure: AWS




• Version control: GitHub




• AI-assisted development: Cursor, Claude, OpenAI, Gemini and other modern development tools




• Engineering practices: code reviews, automated testing, CI/CD and clean code principles

We actively embrace AI-assisted development to help engineers move faster and improve quality, but great engineering judgment, product thinking and ownership remain the foundation.

In short, you will:

• Build and improve the consumer-facing marketplace experience on Trustoo




• Develop high-quality React.js and Next.js applications and components




• Improve key journeys such as search, provider discovery, request flows, matching and comparison




• Build experiments and A/B tests to improve conversion and user experience




• Work on performance, responsiveness and scalability across web and mobile




• Develop and maintain APIs and backend services in CakePHP where needed




• Translate product and design concepts into robust, production-ready solutions




• Use AI-assisted development tools to increase development speed and quality




• Take ownership of projects from technical design through implementation, testing and release




• Work closely with Product, Design, Data and Marketing to continuously improve the marketplace

What does your day look like?

You’ll start with the daily stand-up with your Marketplace Squad colleagues. Together with Product and Design, you’ll work on the highest-impact improvements to the consumer marketplace.

One week you might be rebuilding part of the provider comparison experience in Next.js. The next, you could be improving the request funnel, running an A/B test, optimising page performance or designing the frontend architecture for a new marketplace feature.

You’ll have significant freedom in how solutions are designed and implemented. We expect senior developers to challenge ideas, identify opportunities and help determine the best technical approach rather than simply implementing predefined tickets.

With our open culture, direct access to founders and relatively small company size, decisions are made quickly and you can see the impact of what you build.

Every week, we close together as a company by reviewing progress, celebrating milestones and sharing results.

We are looking for someone who

• Has 4+ years of professional experience as a full-stack or frontend-focused software developer




• Has strong experience with JavaScript, React.js and modern frontend development




• Has experience with or strong interest in Next.js




• Understands how to build responsive, performant and scalable consumer-facing web applications




• Has experience working with backend applications and APIs; PHP experience is a strong plus




• Cares about UX and enjoys translating designs into polished product experiences




• Understands that product development is about outcomes, not just shipping code




• Is comfortable working with experimentation, analytics and A/B testing




• Experience building AI agents or orchestrations is a strong plus.




• Can independently take ownership of complex projects and drive them from idea to production




• Enjoys working closely with product managers, designers, analysts and other engineers




• Is eager to help build the leading services marketplace in Europe

Experience with CakePHP, AWS or large-scale marketplace and consumer products is a plus, but not a requirement.

What we offer

• A product you’ll be proud to work on, used by consumers and local businesses every day




• A senior role with significant ownership over one of the most important parts of our marketplace




• A fantastic team atmosphere with driven colleagues




• A Great Place to Work (official certification)




• A “seat at the table” - your ideas and technical decisions matter




• Career opportunities in a fast-growing scale-up




• A competitive salary based on experience and market standards




• Hybrid working (at least 3 days per week in our Amsterdam office)




• Company laptop, travel allowance, and work-from-home allowance




• Flexibility to work remotely 4 weeks per year




• 25 vacation days (based on 40 hours)




• EUR 1.000,- training budget to deepen your expertise




• Personal budget to spend & a good pension scheme




• Fresh lunch and healthy snacks in the office




• Fun activities: team drinks, sports, cooking workshops, boat trips




• Annual company trip abroad if targets are met.