Senior Backend Engineer (m/f/d) - Berlin

Your Impact

We’re looking for a Senior Backend Engineer to help shape the future of our digital healthcare platform. In this role, you’ll build critical features across our core backend systems, drive the evolution of our architecture, and create robust, scalable services that power life-saving technologies. Working closely with cross-functional teams—including Product, Operations, and Customer Success—you’ll directly contribute to improving the lives of thousands of elderly people and their families. You’ll also mentor fellow engineers and help cultivate a strong engineering culture of quality, collaboration, and ownership.

Your Mission

• Design, build, and maintain scalable and reliable services in a microservice architecture
• Power critical user-facing products: Webshop, Customer Portal, Backoffice, and Mobile Apps
• Build and manage integrations with third-party tools, including CRMs and payment platforms (e.g., Salesforce, Chargebee)
• Collaborate closely with product managers, designers, and engineers to define technical requirements and ship impactful features
• Drive technical discussions, participate in code reviews, and help define best practices
• Support the full software lifecycle—from idea to production—ensuring high quality and resilience
• Contribute to the evolution of our platform architecture, focusing on scalability, maintainability, and performance
• Provide mentorship and support to team members, enabling technical growth and knowledge sharing
• Act as a partner to customer-facing teams to investigate and resolve complex issues quickly and effectively

Your Talent

• 8+ years of experience in software engineering, ideally in fast-paced, startup environments

• Proven ability to own complex projects end-to-end and operate with a high degree of autonomy

• Deep expertise in Kotlin, Java, and Spring Boot

• Solid knowledge of microservice architectures, distributed systems, and event-driven design

• Experienced with PostgreSQL and key AWS services such as Lambda, SQS, EventBridge, API Gateway, DynamoDB, Secrets Manager, and S3

• Skilled in integrating third-party APIs and CRMs

• Familiar with Firebase, including messaging and analytics

• Comfortable operating across the stack when needed

• Hands-on, pragmatic, and solutions-driven with a high attention to detail

• Nice to Have:

  • Experience with Salesforce and/or Chargebee
  • Familiarity with Angular, TypeScript, HTML/CSS
  • Exposure to Docker, Kubernetes, or similar containerization and orchestration technologies
  • Interest in building for mobile platforms or wearables

Our Offer

Wellbeing:

• Urban Sports Club membership for your fitness
• Family & Friends Coupon for the Patronus watch
• 26 vacation days in the first year, 28 days in the second year, and 30 days from the third year onwards

Learning & Development:

• Annual Learning & Development Budget
• Clearly structured Career Framework for your professional development
• 360-degree feedback sessions for continuous improvement

Compensation:

• Exclusive corporate benefits for your advantage
• Discounts at restaurants near the office
• Freedom to choose your hardware

Mobility & Flexibility:

• Modern office in the vibrant district of Friedrichshain
• Job Ticket for a stress-free daily commute
• Up to 2 days per week of working from home

Company Culture:

• Regular company and team events strengthen our sense of community
• Team spirit over elbow mentality – achieving more together
• Contribute to developing a product that offers genuine societal value

The simple way to live safely. We are Patronus.

We are more than just a provider of smart emergency watches. We are true visionaries.

As a modern healthcare start-up from Berlin with strong investors behind us, we are determined to improve the everyday lives of elderly people around the world, to make it safer and more independent.

That's what we achieve with our revolutionary Patronus watch.

Although not recognizable as an emergency device at first glance, it enables users to call for help easily and immediately, anytime and anywhere. This way, we provide an extra dose of safety and we can save lives in the truest sense of the word. However, the Patronus watch itself is only the door opener to develop numerous other groundbreaking products to improve the lives of older people, their relatives and their caregivers. Our vision is to use the enormous possibilities of modern technology to provide the best possible healthcare for our customers. In this way, we contribute to making the healthcare system more effective - and ensure a life worth living.

Sounds like the perfect job for you?
We look forward to your application and to getting to know you!

At Patronus, we are an equal opportunity employer and are committed to fostering a diverse and inclusive workplace. We strive to create a friendly, safe, and welcoming environment for all our employees, regardless of ethnicity, gender, gender identity and expression, sexual orientation, disability and abilities of any kind, physical appearance, social background, marital status, age, or religion (or lack thereof).

In your application, we focus solely on your experience and motivation. You decide which additional information you want to share (e.g., photo, marital status, religion, gender, nationality, etc.). We value and treat all applications equally.

Even if you don’t meet 100% of the requirements, we still encourage you to apply.