Senior Backend Engineer - Hybrid (Java/Kotlin)

caspecoab; Uppsala kommun; Hybrid; SEK 850,000 - 1,000,000; Full time

Benefits offered by this job

Market competitive compensation

Hybrid work model

Job summary

Caspeco seeks a senior backend engineer to join the Checkout team in Uppsala. You will own and maintain complex backend systems, shape architecture, and drive a culture of quality and continuous delivery.

Youll collaborate with delivery and discovery teams, stakeholders, and take ownership of technical direction. You will design scalable services, improve test coverage, and contribute to CI/CD pipelines while communicating clearly in English.

Qualifications

• Strong backend experience with Java and/or Kotlin.
• Experience with document databases, especially MongoDB.
• Solid knowledge of distributed system design.
• Experience with testing strategies and CI/CD pipelines.
• Commitment to code quality, performance, and security.
• Excellent written and verbal English communication.
• Bonus: Azure Cloud familiarity.
• Bonus: Interest in AI.

Responsibilities

• Contribute to development and maintenance of complex backend systems.
• Help advance our testing strategy and move toward continuous delivery.
• Lead architectural discussions to support scalability and long-term sustainability.
• Foster continuous improvement and technical growth within the team.
• Communicate plans, trade-offs, and solutions clearly to stakeholders.

Skills

Java

Kotlin

Distributed systems

MongoDB

Testing & CI/CD

Code quality

English comms

Azure Cloud

AI interest

Tools

CI/CD tools

Job description

Caspeco seeks a senior backend engineer to join the Checkout team in Uppsala. You will own and maintain complex backend systems, shape architecture, and drive a culture of quality and continuous delivery.

Youll collaborate with delivery and discovery teams, stakeholders, and take ownership of technical direction. You will design scalable services, improve test coverage, and contribute to CI/CD pipelines while communicating clearly in English.