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Senior Backend Engineer (Java)(m/w/x)
Designing and evolving RESTful APIs and scalable backend services on AWS for digital advertising. Strong Java (21+) and Spring Boot expertise required. 28 days holiday, mental health app access.
Requirements
- Strong professional backend development experience with Java
- Strong expertise in Java (21+) and Spring Boot
- Hands-on experience with AWS and cloud-native architectures
- Experience designing Restful APIs, operating distributed systems, and microservices architectures
- Solid understanding of inter-service communication, fault tolerance, and system resilience
- Experience with Docker and Kubernetes
- Familiarity with CI/CD pipelines and modern DevOps practices
- Experience with PostgreSQL and Elasticsearch
- Experience with observability tooling (logs, metrics, tracing — e.g., OpenSearch, Grafana, Prometheus)
- Strong understanding of scalable system design and clean architecture
- Strong testing discipline, including unit, integration, and contract testing
- Ability to take ownership and make informed technical decisions
- Comfortable making decisions with incomplete information and navigating trade-offs in production systems
- Strong communication skills with ability to clearly express ideas and trade-offs
- Experience working in cross-functional, agile teams
- Fluent in English
- Self-driven, reliable, and detail-oriented
- Team player with proactive, solution-oriented mindset
- Experience with high-traffic or real-time systems
- Experience with Infrastructure as Code (e.g., Terraform)
- Enjoyment of tackling complex technical challenges
Tasks
- Design and develop scalable backend services
- Maintain backend systems using Java and modern frameworks
- Build and evolve RESTful APIs for consistency and performance
- Architect systems on AWS with cloud-native services
- Operate production systems including deployment and monitoring
- Handle incidents in production environments
- Contribute to high-traffic, real-time, geo-located applications
- Ensure backend systems meet scalability and security standards
- Collaborate with frontend and mobile teams for seamless features
- Improve and unify APIs and backend components
- Work with AWS, PostgreSQL, and Elasticsearch
- Contribute to Agile methodologies (Scrum, Kanban)
Work Experience
- approx. 4 - 6 years
Education
- Bachelor's degreeOR
- Master's degree
Languages
- English – Fluent
Tools & Technologies
- Java
- Spring Boot
- AWS
- Restful APIs
- distributed systems
- microservices architectures
- Docker
- Kubernetes
- CI/CD pipelines
- PostgreSQL
- Elasticsearch
- observability tooling
- OpenSearch
- Grafana
- Prometheus
- Infrastructure as Code
- Terraform
Benefits
Mental Health Support
- Mental health app access
Healthcare & Fitness
- Urban Sports Club subscription subsidy
- Fully equipped gym
Retirement Plans
- Corporate pension scheme
Sustainability Focus
- Sustainability project engagement
More Vacation Days
- 28 days of holiday
- Additional holiday days
Modern Office
- Zen Rooms
Informal Culture
- Roof terrace
Free or Subsidized Food
- Free lunch
- Free varied breakfasts
Snacks & Drinks
- Free hot and cold drinks
- Free fruit
- Free snacks
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Senior Backend Engineer (Java)(m/w/x)
Designing and evolving RESTful APIs and scalable backend services on AWS for digital advertising. Strong Java (21+) and Spring Boot expertise required. 28 days holiday, mental health app access.
Requirements
- Strong professional backend development experience with Java
- Strong expertise in Java (21+) and Spring Boot
- Hands-on experience with AWS and cloud-native architectures
- Experience designing Restful APIs, operating distributed systems, and microservices architectures
- Solid understanding of inter-service communication, fault tolerance, and system resilience
- Experience with Docker and Kubernetes
- Familiarity with CI/CD pipelines and modern DevOps practices
- Experience with PostgreSQL and Elasticsearch
- Experience with observability tooling (logs, metrics, tracing — e.g., OpenSearch, Grafana, Prometheus)
- Strong understanding of scalable system design and clean architecture
- Strong testing discipline, including unit, integration, and contract testing
- Ability to take ownership and make informed technical decisions
- Comfortable making decisions with incomplete information and navigating trade-offs in production systems
- Strong communication skills with ability to clearly express ideas and trade-offs
- Experience working in cross-functional, agile teams
- Fluent in English
- Self-driven, reliable, and detail-oriented
- Team player with proactive, solution-oriented mindset
- Experience with high-traffic or real-time systems
- Experience with Infrastructure as Code (e.g., Terraform)
- Enjoyment of tackling complex technical challenges
Tasks
- Design and develop scalable backend services
- Maintain backend systems using Java and modern frameworks
- Build and evolve RESTful APIs for consistency and performance
- Architect systems on AWS with cloud-native services
- Operate production systems including deployment and monitoring
- Handle incidents in production environments
- Contribute to high-traffic, real-time, geo-located applications
- Ensure backend systems meet scalability and security standards
- Collaborate with frontend and mobile teams for seamless features
- Improve and unify APIs and backend components
- Work with AWS, PostgreSQL, and Elasticsearch
- Contribute to Agile methodologies (Scrum, Kanban)
Work Experience
- approx. 4 - 6 years
Education
- Bachelor's degreeOR
- Master's degree
Languages
- English – Fluent
Tools & Technologies
- Java
- Spring Boot
- AWS
- Restful APIs
- distributed systems
- microservices architectures
- Docker
- Kubernetes
- CI/CD pipelines
- PostgreSQL
- Elasticsearch
- observability tooling
- OpenSearch
- Grafana
- Prometheus
- Infrastructure as Code
- Terraform
Benefits
Mental Health Support
- Mental health app access
Healthcare & Fitness
- Urban Sports Club subscription subsidy
- Fully equipped gym
Retirement Plans
- Corporate pension scheme
Sustainability Focus
- Sustainability project engagement
More Vacation Days
- 28 days of holiday
- Additional holiday days
Modern Office
- Zen Rooms
Informal Culture
- Roof terrace
Free or Subsidized Food
- Free lunch
- Free varied breakfasts
Snacks & Drinks
- Free hot and cold drinks
- Free fruit
- Free snacks
Like this job?
BetaYour Career Agent finds similar jobs for you every day.
About the Company
Bonial International GmbH
Industry
Marketing
Description
The company is a digital advertising partner for offline businesses, supporting retailers in their marketing activities.
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