(Senior) Backend Engineer Java (m/f/d)

Simplesystem; München; Hybrid; EUR 70.000 - 90.000; Vollzeit

Zusammenfassung

A fast-growing B2B SaaS company in Munich is seeking a Java Developer to design and develop backend services in a supportive and innovative environment. You will work with a cross-functional team, utilizing modern technologies and AI for customer-centric features. The ideal candidate has over 5 years of experience in web applications, a solid understanding of Java and Spring Boot, and proficiency in English. This role offers a hybrid work setup and attractive compensation, along with an engaging office culture.

Leistungen

Top-tier work equipment

Multisport membership

Free breakfast & lunch

Attractive compensation

Team-building activities

Individual career development

Qualifikationen

• 5+ years of experience in developing web applications.
• Good command of recent Java versions, preferably 19+.
• Experience with Spring Boot, preferably 3+.

Aufgaben

• Design and develop backend services of the system.
• Work closely with a cross-functional engineering team.
• Leverage AI in feature development.

Kenntnisse

Building modern web applications

Java (preferably 19+)

Spring Boot (preferably 3+)

Design decisions for reliable systems

Scrum / Agile

Fluent English

Tools

ElasticSearch

MongoDB

Kafka

AWS

Kubernetes

Kotlin

Jobbeschreibung

Your mission

Who we are: We are simple system – a fast‑growing B2B SaaS company based in Munich and Cologne, developing industry‑leading procurement software incl. a state‑of‑the‑art B2B marketplace for mid‑sized businesses across Germany, Austria, and Switzerland. With 23,000+ monthly users, 850+ suppliers and partners, €150M+ in platform transaction volume and a40-person team, we are building the next generation of B2B commerce. And we’re just getting started.

Team & Technology: The engineering team works closely with business and product, has an impact on the product development roadmap and full autonomy of the tools and technologies used. At simple system we build the best product in the market by fighting for the best solution internally – the engineering perspective being on eye level with the business and product perspective. Our B2B solution has been designed and developed according to modern methodologies and principles. You will be joining across‑functional team of very experienced engineers, who believe in making great products and have all the technical skills to make it happen. Occasionally, we meet together to discuss the most important project matters and get to know each other during project workshops (on‑site in Warsaw or Munich). Our technology stack: Spring Boot, PostgreSQL, Elasticsearch, MongoDB, Kafka, ArchUnit, AWS S3, CloudWatch, EKS, Prometheus, Alertmanager, Grafana, Kubernetes, GitHub Actions, Terraform, Ansible, Cypress.

Your part: As a Java Developer, you will be responsible for the design and development of the backend services of the system. You will be joining a cross‑functional team of very experienced engineers, who believe in making great products and have all the technical skills to make it happen. You will leverage AI smartly in your day‑to‑day work and as a powerful building block in customer‑centric feature development.

Your profile

Requirements:

• 5+ years of professional experience building modern web applications
• Good command of recent Java versions (preferably 19+)
• Good knowledge of Spring Boot (preferably 3+)
• Ability to make design decisions that result in correct, reliable, performant & scalable systems
• Experience with Scrum / Agile environment
• Be open and willing to learn from mistakes
• Fluent in English

Nice to have:

• Hands‑on experience with ElasticSearch, MongoDB or Kafka
• Experience with AWS or Kubernetes
• Experience with Kotlin

Why us?

• We’re a no‑nonsense, “roll‑up‑your‑sleeves” team with a deep sense of ownership and customer focus
• We offer real responsibility and entrepreneurial freedom -you’ll shape not just our tech stack, but our company’s future
• We operate with flat hierarchies, fast decisions and high transparency
• We’re backed by a single strategic investor and have an ambition to become the dominant player in procurement software for mid‑sized companies in Europe
• We have an awesome team that loves working together

Location & Benefits

• Location: Munich‑Pasing
• Hybrid setup: In‑office days on Tuesdays & Wednesdays, flexible working hours
• Top‑tier work equipment
• Multisport membership
• Free breakfast & lunch in our in‑house canteen
• Attractive compensation
• Regular company updates and team‑building activities
• Individual career path and regular feedback every 6 months

You’ll be part of an international team where you can use your creativity and enjoy a fun working environment. If communication in English and GIFs, flat organization structure, and permanent challenges make you feel like a kid in a candy store, let’s talk.