Senior Software Engineer - Java & PHP (m/f/d)

Permanent employee, Full-time · Berlin Hybrid

Your Mission

At Ratepay, we are dedicated to revolutionizing the world of digital payments. Established in 2009, we have grown to become Europe's leading white-label Buy Now Pay Later payment provider, processing over 2.5 million transactions per month. Our diverse team of 200+ professionals collaborates to create customized, state-of-the-art payment solutions for major online retailers and marketplaces.

As a Senior Software Engineer (PHP/Java) at Ratepay, you will play a crucial role in our mission to streamline and enhance our payment processing systems. You will be part of the Buyer Experience (BUX) product development team, which is responsible for direct communication with buyers via email, post, and web portals. This team also provides critical tools for our customer service center and merchant partners. BUX is the only product area at Ratepay that interacts directly with buyers, defining our external image with millions of monthly contacts. As such, we are the competence center for customer service, customer-facing solutions, and front-end technology.

We are looking for an experienced software engineer with strong expertise in PHP and Java, deep knowledge of RESTful APIs, microservices, and event-driven architecture, and a passion for delivering high-quality, scalable solutions. In this role, you will take full ownership of the software development lifecycle, from concept to deployment.

Key Responsibilities:

Develop, operate, and continuously improve our products, ensuring robust and scalable solutions.
Take a leading role in the refactoring of our Customer Service (CS) platform, transitioning from PHP to Java-based architecture.
Bring your expertise in PHP and Java to drive technical innovation and mentor fellow engineers.
Champion best practices in software development, ensuring clean, maintainable, and efficient code.
Foster a DevOps mindset and take ownership of solutions in an AWS environment ("you build it, you run it").
Design and implement new features and services, optimizing system performance and user experience.
Be a key knowledge carrier for PHP while actively supporting our shift to Java.
Collaborate with cross-functional teams to increase the technical excellence of our engineering culture.

That's What You Bring Along

7+ years of experience in software engineering, with strong proficiency in backend development.
Professional experience in Java development, particularly with Spring/Spring Boot.
Professional experience in PHP development, particularly with Laravel.
Hands-on experience with Git, Docker, and PostgreSQL.
Strong conceptual knowledge of RESTful APIs, microservices, and event-driven architecture.
Experience with full software lifecycle development and a DevOps mindset.
Excellent problem-solving skills and a proactive approach to technical challenges.
Strong communication and collaboration skills, aligned with Ratepay’s values of ownership and teamwork.

Preferred Qualifications:

First experience in Kotlin would be a plus.
First experience with Kafka would be great.
Experience on JS frameworks like Vue.js would be beneficial.

Equal Opportunities & Diversity

We value our diversity and welcome everyone to our team. Regardless of ethnic and social background, religious beliefs, worldview, gender, sexual orientation, physical and mental limitations, age, marital status, educational background and nationality.
With over 200 employees and 40 different nationalities, we take our values seriously. These include ownership, growth, integrity, collaboration, customer centricity and inclusion.

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About us

We are where we are because we work together as one team. Because we got the freedom to execute ideas. And above everything: because we never stop improving. Here it is all about shared goals not about the big ego. We are dedicated pros (more than 250 of them) not cons. We embrace being courageous, committed and decisive, warm-hearted and having a will to win.

We have our origin in the heart of the payment scene and cover the whole value chain from integration support to the dunning process with a core of AI-based risk management. With us, you can integrate direct debit, instalments and prepayment. In other words: the favourite payment methods in Germany, Austria and Switzerland (the Dutch like it too). Located in the middle of Europe’s fintech metropolis (Berlin) we are proud to work with major partners such as Eurowings, Ebay and About You and hundreds more.

Deine Mission

Key Responsibilities:

Develop, operate, and continuously improve our products, ensuring robust and scalable solutions.
Take a leading role in the refactoring of our Customer Service (CS) platform, transitioning from PHP to Java-based architecture.
Bring your expertise in PHP and Java to drive technical innovation and mentor fellow engineers.
Champion best practices in software development, ensuring clean, maintainable, and efficient code.
Foster a DevOps mindset and take ownership of solutions in an AWS environment ("you build it, you run it").
Design and implement new features and services, optimizing system performance and user experience.
Be a key knowledge carrier for PHP while actively supporting our shift to Java.
Collaborate with cross-functional teams to increase the technical excellence of our engineering culture.

Das bringst Du mit

7+ years of experience in software engineering, with strong proficiency in backend development.
Professional experience in Java development, particularly with Spring/Spring Boot.
Professional experience in PHP development, particularly with Laravel.
Hands-on experience with Git, Docker, and PostgreSQL.
Strong conceptual knowledge of RESTful APIs, microservices, and event-driven architecture.
Experience with full software lifecycle development and a DevOps mindset.
Excellent problem-solving skills and a proactive approach to technical challenges.
Strong communication and collaboration skills, aligned with Ratepay’s values of ownership and teamwork.

Preferred Qualifications:
- First experience in Kotlin would be a plus.
- First experience with Kafka would be great.
- Experience on JS frameworks like Vue.js would be beneficial.

Chancengleichheit & Vielfalt

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Über uns

We dare to design the future of payments. Ratepay is energy and diversity and: custom-made state-of-the-art payment solutions. Established in 2009 we were a fintech before the word fintech even existed. Today we are the number one white-label Buy Now Pay Later payments provider in Europe handling over 2.5M transactions per month and we’re constantly growing.

We are where we are because we work together as one team. Because we got the freedom to execute ideas. And above everything: because we never stop improving. Here it is all about shared goals not about the big ego. We are dedicated pros (more than 210 of them) not cons. We embrace being courageous, committed and decisive, warm-hearted and having the will to win.

We have our origin in the heart of the payment scene and cover the whole value chain from integration support to the dunning process with a core of AI-based risk management. With us, you can integrate direct debit, instalments and prepayment. In other words: the favourite payment methods in Germany, Austria and Switzerland (the Dutch like it too). Located in the middle of Europe’s fintech metropolis (Berlin) we are proud to work with major partners such as Eurowings, Ebay and About You and hundreds more.

Apply for this job

Your application

Thank you for considering a career at Ratepay GmbH. Please fill out the following form. In case you are experiencing problems with the document upload, mail your documents to jobs@ratepay.com.