Senior Fullstack Developer (Java/Kotlin)

InventYou; Stockholms kommun; Hybrid; SEK 900,000 - 1,200,000; Full time

Job summary

inventYOU is seeking a Senior Fullstack Developer (Java/Kotlin) to join a product team building business-critical applications used by customers and partners internationally. You will own services end-to-end, from development to production, and mentor junior developers.

You'll work across back end, front end, and cloud, designing microservices and micro frontends in an event-driven architecture on Kubernetes, with a hybrid work setup and strong English communication.

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

• 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.

Skills

Java

Kotlin

Full-stack

Event-driven

Microservices

AWS

React

Tech lead

Hybrid work

English

Tools

Kubernetes

Kafka

GitLab CI

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

• 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