Senior Backend Engineer [Java (Spring Boot), Node.js]

Overview

bonial helps you save time, money and paper! We are a digital advertising partner for offline businesses - we support retailers in their marketing activities and help them find a new audience. Bonial is part of Axel Springer SE and is disrupting the retail landscape as the leading "Drive to Store" partner in Germany and France. We connect millions of users with their favorite shops and brands—driving real impact every day. We are in a growth phase, scaling fast and transforming how people discover retail. If you’re looking to be part of a dynamic team shaping the future of retail, we’d love to meet you. bonial welcomes both full- and part-timers!

About The Team

You will be working in a cross-functional team (Web, Android, iOS, Backend), delivering end-to-end features to App and Web users. Our team culture is flat, self-organized and technology freedom. If you have a strong motivation to shape the future of digital offer communication, to create state-of-the-art IT products and to deliver high quality code, let’s talk.

About the role

We look for a passionate senior backend engineer with strong experience in designing, developing, and scaling backend systems that power our products. You will own the backend components of your domain team and work closely with product managers and frontend engineers to ship high quality features to our end users.

As a senior backend developer in our cross-functional team you will ensure our components are performing as expected and adhering to industry standards such as scalability, maintainability, and security. In particular, you will be:

• Having the end-to-end ownership of backend services, operating with autonomy and proactively addressing technical challenges.


• Playing an active role in the development of high-traffic, real-time, geo-located online applications and surrounding ecosystems.


• Designing and implementing REST APIs on our AWS infrastructure, making use of AWS services for new components.


• Monitoring our backend services in production environments to ensure high performance, scalability, and reliability.


• Exploring technologies like AWS, PostgreSQL, Elasticsearch, Rest API.


• Building a system in the spirit of Agile methodologies (Scrum, Kanban).

Qualifications

• Strong experience building backend (for frontend) applications.


• Experience in Spring Boot and Java 21+


• Strong experience in Node.js.


• Strong experience with hosting on AWS and making use of AWS’s services.


• Experience with agentic tools (e.g., LLM agents, AI copilots and Claude Code).


• Hands-on experience with inter-service communication, fault-tolerant distributed systems, distributed caching mechanisms, and microservice architectures.


• Proficient with Docker and Kubernetes.


• Familiar with CI/CD pipelines and cloud platforms (preferably AWS).


• Experience with PostgreSQL and Elasticsearch.


• Very good communication skills and express your ideas.


• First experiences in an agile software development team.


• You work independently, responsibly, accurately and reliably.


• Team player, but ambitious at the same time.


• Bachelor or a master's degree in computer science or similar qualifications.


• Fluent in both spoken and written English. German is not required.


• Eager to learn new technologies and interested in cloud architecture.

What We Offer

• High growth story - Bonial is a high-growth and dynamic company with continuous potential into the future. We are a leading player and a driving force in an industry that is undergoing a massive shift from print to digital.


• Innovation & tech - we are a high-tech company focused on innovative technology, leveraging AI and other tools to maximize productivity and efficiency.


• Exciting environment for professional development - strong support for your professional development, backed by a feedback culture.


• Diversity - equal employment opportunity and a safe space regardless of race, religion, sex, sexual orientation, age, disability, gender, gender identity or gender expression.


• Wellbeing - free access to nilo.health, gym in the office, Urban Sports Club, and corporate pension scheme.


• Sustainability - opportunities to engage in sustainability projects.


• Flexibility - up to 20% mobile work within Germany, option to work from abroad, 28 days of holiday plus up to 30 days with extra days for certain occasions.


• Modern office - Zen Rooms, gym, roof terrace.


• Free lunch - lunch options in the office, drinks, fruit, breakfasts and snacks.


• Social Culture - team events and community engagement.


• Visa Sponsorship - sponsorship for those joining from outside Germany.


• Partner for retail - we empower retailers to reach customers and enrich local shopping.


• As part of Axel Springer Group, alignment with Axel Springer Essentials.