Senior Fullstack Developer (Java/Kotlin)

inventYOU IT Consulting; Stockholms kommun; Hybrid; SEK 700,000 - 950,000; Full time

Benefits offered by this job

Technical ownership

Modern stack: Java, Kotlin, React

Long-term engagements

Job summary

inventYOU IT Consulting seeks a Senior Fullstack Developer (Java/Kotlin) to join a product team building and operating business-critical applications used by customers and partners internationally. You will work across backend, frontend, and cloud, delivering microservices and micro frontends.

You will mentor other developers, shape technical direction, and make deployment decisions in a hybrid setup, leveraging AWS, Kubernetes, React, and modern tooling.

Qualifications

• Senior-level experience as a full-stack developer with Java and Kotlin in production environments.
• Strong understanding of event-driven architecture.
• Experience designing and building microservices and deploying them in cloud-based environments (AWS preferred).
• Hands-on experience with modern front-end development, preferably React.
• Experience in a tech lead role or mentoring and guiding other developers.
• Ability to work independently and collaboratively in a hybrid setup.
• Full professional proficiency in English.

Responsibilities

• Develop microservices and micro frontends in an event-driven architecture deployed on Kubernetes.
• Mentor less experienced developers and shape technical direction.
• Work across back end, front end, and cloud to deliver business-critical applications.

Skills

Java

Kotlin

Event-driven architecture

Microservices

Cloud (AWS)

React

Leadership / mentoring

English proficiency

Tools

Kubernetes

GitLab CI

Kafka

Micro frontend

Job description

We are looking for a Senior Fullstack Developer (Java/Kotlin) to join a product team that builds and runs business-critical applications used by customers and partners internationally. The team owns its services end-to-end, from development to production.

You will work across back end, front end, and cloud, developing microservices and micro frontends in an event-driven architecture deployed on Kubernetes. Beyond hands-on development, you will help shape technical direction, make sound deployment decisions, and mentor less experienced developers.

Requirements

• Senior-level experience as a full-stack developer with Java and Kotlin in production environments
• Strong understanding of event-driven architecture
• Experience designing and building microservices and deploying them in cloud-based environments (AWS preferred)
• Hands-on experience with modern front-end development, preferably React
• Experience in a tech lead role or mentoring and guiding other developers
• Ability to work independently and collaboratively in a hybrid setup
• Full professional proficiency in English

Nice to Have

• Experience with Kubernetes and GitLab CI
• Experience with Kafka for service-to-service communication
• Experience with micro frontend architecture
• Experience with continuous deployment practices
• Familiarity with Agile methodologies

Benefits

• Take technical ownership in a team that builds and runs its own applications, used by customers and partners internationally
• Work with a modern stack spanning Java, Kotlin, React, Kafka, AWS, and Kubernetes
• Join inventYOU, an IT staffing and consulting company with a strong presence across Stockholm and Athens, offering long-term engagements and close support throughout your assignment