Senior Software Engineer (Backend) - Java & Kotlin
Workplace: Stockholm, Sweden
Expires: September 5, 2025
Join Qbtech, a global leader in professional ADHD tests, to help transform healthcare with innovative products and services. As a Senior Software Engineer, you will focus on backend development using Java and Kotlin within an international team, contributing across the software delivery lifecycle in a hybrid work environment based in Stockholm, Sweden.
Main requirements:
- Extensive development skills using Java and Kotlin
- Strong problem-solving mentality
- Knowledge of the Ktor framework
- Knowledge of at least one test framework such as JUnit
- Good knowledge of network infrastructure related to web applications (load balancer, firewall, security groups, CDN etc.)
- Experience with service provisioning on at least one cloud platform (AWS, Google Cloud, Microsoft Azure)
- Experience with infrastructure as code (Terraform)
- Experience with containerization (Docker)
- Experience working with Agile development methodologies
- Excellent written and verbal communication skills
- At least 6-8 years documented experience
- Bachelor's or Master's degree in Computer Science or related field
- Fluent in English
Responsibilities:
- Develop and document new product features and user stories
- Conduct code reviews for peers
- Maintain and improve legacy code
- Manage DevOps and cloud infrastructure provisioning
- Manage software deployment
- Troubleshoot incidents and fix bugs
Required hard skills:
- Java
- Kotlin
- Ktor framework
- JUnit or similar test framework
- Network infrastructure knowledge relevant to web applications
- AWS, Google Cloud, or Microsoft Azure experience
- Terraform (Infrastructure as Code)
- Docker (Containerization)
- Agile development methodologies
Soft skills:
- Strong problem-solving skills
- Excellent written and verbal communication
Coding languages:
- Java
- Kotlin
Frameworks:
- Ktor
- JUnit
Natural languages:
- English (Proficient)
Cultural skills:
- Ability to work in an international, hybrid work environment
- Commitment to healthcare transformation and meaningful product development
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