Junior Software Engineer

Catawiki; Amsterdam; On-site; EUR 40,000 - 55,000; Full time

Benefits offered by this job

€100 joining voucher

Mentorship programs

Hybrid work environment

Job summary

Catawiki in Amsterdam is searching for a Junior Software Engineer to join their Engineering team. The role involves designing and developing microservices, collaborating with cross-functional teams, and contributing to an innovative engineering culture.

Applicants should hold a Master's degree, have at least 1 year of experience, and possess fundamental knowledge of SQL. Opportunities for growth and professional development are available in this vibrant environment.

Qualifications

• At least 1 year of experience in a full-time job.
• Strong collaboration skills in a professional or academic setting.
• Fundamental knowledge of SQL and relational databases.

Responsibilities

• Design, develop, test, deploy, maintain, and improve microservices.
• Collaborate with product designers and engineers to enhance efficiency.
• Participate in Technical Week to promote creativity and innovation.

Skills

Ruby

JavaScript

SQL

Team collaboration

Education

Master's degree

Job description

Catawiki is a marketplace for buying and selling special objects, with over 25 million unique items sold across 80+ categories.

About the Job

On our path to becoming the most visited online curated marketplace for special objects, our Engineering team is on a mission to deliver the best experience across our platforms by building best‑in‑class products for search and discovery, bidding, curation, logistics, payments, and support.

We're a scale‑up with customer-facing challenges dealing with high‑scale (75k auctions per week) and high traffic (more than 10 million visitors per month). As a Junior Software Engineer, you will be instrumental in Demand, Supply, and Fulfilment—our three core verticals—where you’ll help drive the future of our platform, improving and delivering product innovations for our platform.

Working in small, fully autonomous, and highly collaborative Agile teams, you will build scalable, maintainable, and resilient microservices and features. That's why we are looking for bold, curious and open developers! Are you ready to join?

Where you'll be

Our office is located in Amsterdam. Please only apply if you have the right to work in the Netherlands.

What you will do

• Build: Design, develop, test, deploy, maintain and improve. You’ll be part of a team that is end‑to‑end responsible for their own microservices.
• Collaborate: Work closely with product designers, product owners, front, back, and mobile engineers to share new ideas and make our processes even more efficient.
• Growth: Support our great engineering culture, by documenting and advocating for best development practices – constantly improving the quality of our products by fixing bugs and refactoring the code base where necessary.
• Learn: Boost your career by testing new technologies and participating in our Technical Week (after 2 product sprints): a week dedicated to promoting creativity, innovation, and knowledge sharing across domains.

What you’ll bring

We look for engineers motivated to learn new things, ship new features, and pursue new and interesting challenges. Our backend stack focuses on Ruby, and the frontend is mainly built using TypeScript and React. However, if you’re passionate about learning new things, prior experience with Ruby is unnecessary.

As a Junior Engineer, you have a lot of growth and opportunities ahead of you. At Catawiki, we will give you much room to explore your interests and strengths and provide you with the support you need to grow rapidly and become a true back‑end professional.

A strong candidate has:

• At least 1 year of experience in your first full‑time job.
• A completed Master’s degree.
• Some experience collaborating with others in a professional or academic setting, whether with other engineers and product managers in a software development environment, or similar interactions in another organization, making you a valued member of an autonomous, cross‑functional team.
• You have experience with at least one mainstream programming language (including, without limitation, Ruby, Python, Go, C++, C#, Java, Scala, Kotlin, etc.) and the willingness to learn other programming languages as necessary (we use Ruby).
• You have some fundamental knowledge of SQL and relational databases.
• Nice to have: You are familiar with Application Programming Interfaces, whether the API is a web technology such as HTTP, REST, JSON, etc., or another API technology such as gRPC.

Additionally:

• You are a passionate engineer with a strong eye for detail.
• You strive to be a great team player and don’t shy away from new challenges.
• You are someone who takes initiative and is ready to jump in and help if needed.
• You keep the company's values close to your heart.
• You enjoy working in a diverse and dynamic environment.
• You possess a growth mindset in which you take the initiative to further your personal skill set as a software developer, whether by learning new skills and/or technologies or by seeking new opportunities.

Why you'll love working with us

• Create a visible impact by working at scale in a global organisation serving millions of customers across 80+ categories. In our flat structure, every role has a broad scope and directly impacts both our customers and the business.
• Learn and grow through our Learning & Development initiatives, including clear development plans and mentorship programmes to support your career progression.
• A culture of connection defines us. We’re a passionate, diverse team of 800+ Catawikians representing 60+ nationalities. We foster an inclusive and queer‑friendly environment where everyone is encouraged to bring their full self to work.
• Celebrate life’s moments with us. You’ll receive a €100 Catavoucher when you join, a €50 Catavoucher on your birthday, and an extra day off each year to “Pursue Your Passion”. We also offer additional leave for key work anniversaries and important life events. Benefits may vary by location.

Our Offices and Way of Working

Our vibrant offices in Amsterdam, Paris and Lisbon are designed to inspire collaboration. Most Catawikians operate in a hybrid setup, combining office‑based and remote work, with a minimum of two days per week in the office, unless a role is explicitly stated as fully remote or fully office‑based.