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Senior Front-End Engineer (React) - Personalization

Picnic

Amsterdam
Full-time
5-10 years experience
Hybrid

Key Skills

React
React Native
TypeScript
RxJS
Redux
Styled Components
Jest
Storybook
Front-end development
Product ownership
Cross-functional collaboration
Conceptual thinking
E-commerce
Software architecture
Communication

Job Description

In a nutshell

At Picnic, we're revolutionising the way people buy groceries with our affordable and sustainable grocery service. In the Personalization team, you’ll build the experimentation platform that lets Picnic try new ideas safely and at scale: from which promotions to highlight to which emails to send. Your work lets business teams run experiments and control the customer experience themselves, without needing an engineer for every change. It’s a product that is foundational to our business, and it directly improves how customers shop every day.
We use React, React Native and TypeScript across the board, together with our server-driven UI framework, and we’re working towards a single platform for mobile and web. 

Tricks of the trade

  • Think like a product owner. You don’t just implement requirements, you question them. Together with product owners and designers, you shape specifications for new features, discuss trade-offs, push back when something doesn’t add up, and help build a long-term vision for where the platform should go.
  • Build bridges. You work with cross-functional teams across the whole business: the business teams who rely on the platform, fellow engineers, and the other consumer-facing teams whose features run through it. You make it easy for others to succeed.
  • Drive things forward. You don’t wait for someone to hand you the next task. You spot what could be better, in the codebase, the platform or how the team works, and you take the lead on fixing it. You’ll take on increasingly challenging projects with full ownership of your contributions.
  • Our Tech: React, React Native, TypeScript and RxJS, Redux, Styled Components, Jest, Storybook

If you want ownership, real influence on product direction, and to see your work reach millions of customers, you’ll feel at home here.

We’re looking for

  • 7+ years of building and shipping frontend applications end-to-end. You’ve taken products from idea to millions of users, and you’ve stayed around to make them better.
  • A strong conceptual thinker. You thrive in ambiguity and lead the way to the right solution.
  • Sharp judgement on trade-offs. You know when to build it right and when to ship it now, and you make that call yourself.
  • Real curiosity about the customer. You care whether your work changes how people shop, not just whether the code is clean.
  • Clear, structured communicator. You collaborate effectively with product, design, backend, analytics, and frontend teams.
  • Genuine motivation to build consumer and e-commerce experiences used by millions, with willingness to work from Picnic’s Amsterdam office-first environment.

Picnic Perks

✍🏼Every expert was once a beginner! 

You’ll get plenty of opportunities to challenge yourself and grow, including the Picnic Tech Academy, Lunch & Learn sessions, and tailored soft skills training. We also offer free professional weekly language courses.

💡Make a difference

You’ll work in an awesome startup environment with the freedom to drive your own projects and create a visible impact. Our fully electric vehicles and sustainable business model mean you’ll also be contributing to making the world a better place! 

🫱🏼‍🫲🏾Teamwork makes the dream work

With more than 80 nationalities across 3 countries, you’ll be part of a diverse company with plenty of cool stuff to get involved with, from board game evenings to after-work drinks to our company ski trip and more!

🍎You are what you eat

You’ll get freshly prepared, healthy lunches and snacks (with plenty of vegetarian, vegan, and halal options). Coffee snob? Don’t worry, our amazing Picnic barista has you covered.

🚴🏽Stay healthy 

Mental health is important. As well as having the option to speak with Picnic colleagues who act as confidential advisors, our collaboration with OpenUp gives you easy access to professional psychologists, along with workshops and materials. 

There are plenty of sports communities and events to get involved with, from tennis to yoga, to climbing! 

🔋Attractive package

We offer competitive compensation and a pension plan that looks out for your future self, as well as 25 vacation days per year, so you can recharge your batteries 

🌍Benefits for expats 

It can be daunting starting a new job AND moving to a new country. That’s why we offer lots of support for our many expat colleagues, if you want to find our relocation benefits, see here.

Core Responsibilities

You will build and maintain the experimentation platform for Picnic, enabling business teams to test new features and promotions independently. You will collaborate with cross-functional teams to shape product specifications and drive long-term technical vision.

Requirements

You must have 7+ years of experience in building and shipping end-to-end front-end applications using React and TypeScript. Strong conceptual thinking, effective communication, and a customer-centric mindset are essential for this role.

Benefits

  • Professional development
  • Tech academy
  • Language courses
  • Healthy lunches and snacks
  • Mental health support
  • Professional psychologists
  • Sports communities
  • Pension plan
  • 25 vacation days
  • Relocation support

About Picnic

Industry: Retail

Company size: 5,001-10,000 employees

At Picnic, we’re a team of inventors, builders, dreamers, and best-in-class operators! With our app-only business model and custom-built in-house supply chain, we're revolutionizing the way people buy groceries and eat every day. We're growing across the Netherlands, Germany, France, and beyond. One of the things that makes Picnic different is that we handle almost everything ourselves: from forecasting and building automated warehouses to designing custom electric vehicles and writing our own software. It gives us total freedom to experiment with bold, new ideas (which we do a lot!). We love to challenge ourselves and learn by doing. The best way to grow here? By taking ownership from day one and pushing boundaries every single day. As a diverse team of over 85 nationalities, there’s always something happening - whether you’re into sports, board games, charity work, dancing at our legendary Picnic festival, or licorice tasting (yes, really!). Our scale-up culture means you get to own your work and bring fresh ideas to life. If you’re looking to make a real impact, reach out. We’d love to hear from you!

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