Senior Backend Developer / Software Test Engineer - Gothenburg

You will play a key role in designing, developing, and validating our backend system. You will work closely with our software and firmware teams to develop reliable, scalable backend services with a strong focus on quality, testing, and automation. Your experience in backend development and test engineering will be important in shaping and improving our platform.

What you will do

• Design, develop, and maintain backend services and systems using Go and the Twelve-Factor App methodology.
• Design, develop, and maintain automated test frameworks, test environments, and validation processes for backend systems and services.
• Define and implement test strategies covering functionality, integration, system, regression, and performance testing.
• Build tools and test harnesses to verify the reliability, scalability, and correctness of distributed systems.
• Optimize software for performance, efficiency, reliability, and scalability.
• Troubleshoot, debug, and analyze applications and test results to ensure smooth functionality.
• Collaborate with front-end developers, firmware engineers, and other stakeholders to deliver high-quality software solutions.
• Participate in code reviews and provide constructive feedback to team members.

Your Profile

• Minimum of 5 years of experience in backend development, test engineering, or a similar role.
• Experience with Go is a strong advantage. We also welcome candidates with solid backend experience in other typed backend languages.
• Experience designing and implementing CI-based test execution for backend systems and distributed applications.
• Experience and familiarity with concurrent and asynchronous programming.
• Proven experience with RESTful API design, implementation, and testing.
• Strong familiarity with Linux-based IT systems and test or hosting environments.
• Knowledge of databases (PostgreSQL, Cassandra) and expertise with in-memory caching solutions (Redis or comparable).
• Experience with distributed event-streaming and messaging systems, such as Apache Kafka or NATS.
• Experience working with version control systems (Git) in collaborative environments.
• Excellent problem-solving skills and attention to detail, with the ability to make sound trade-offs based on business needs and technical requirements.
• Ability to work independently and as part of a team.
• You communicate clearly and are comfortable supporting and mentoring less experienced developers.
• Strong communication skills in English, written and spoken. Proficiency in Swedish is a plus.