Senior Backend Developer / DevOps Engineer

Grepit AB; Luleå kommun; On-site; SEK 900,000 - 1,200,000; Full time

Job summary

Grepit AB is seeking a seasoned Backend Engineer to design, develop, and operate scalable Go-based services. You will work closely with software and firmware teams to deliver reliable backend systems and robust DevOps processes.

Your expertise in RESTful APIs, Linux hosting, and cloud familiarity will help optimize performance, reliability, and data consistency across distributed services.

Qualifications

• 5+ years of backend development experience.
• Go is a strong advantage; other typed backends accepted.
• Experience with concurrent and asynchronous programming.
• Proven RESTful API design experience.
• Strong Linux-based hosting environments knowledge; cloud familiarity helpful.

Responsibilities

• Design, develop, and maintain backend services with Go and Twelve-Factor App.
• Create DevOps environments, CI/CD, release processes, monitoring, and alerts.
• Optimize software for performance, reliability, and scalability.
• Troubleshoot and debug applications for smooth operation.
• Collaborate with frontend and firmware teams to deliver solutions.
• Participate in code reviews and provide constructive feedback.

Skills

Backend development

Go

Concurrency

REST API design

Linux systems

Cloud services

Distributed systems

PostgreSQL

Redis

Kafka

NATS

Git

English communication

Tools

Git

Kafka

NATS

Redis

Job description

You will play a key role in designing, developing, and operating our backend system. You will work closely with our software and firmware teams to build reliable, scalable, and efficient services. Your experience in backend development, hosting environments, and operational tooling 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 DevOps environments and processes; including solutions for CI/CD, release processes, monitoring, and alerting.
• Optimize software for performance, efficiency, reliability, and scalability.
• Troubleshoot and debug applications 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.
• Experience with Go is a strong advantage. We also welcome candidates with solid backend experience in other typed backend languages.
• Experience and familiarity with concurrent and asynchronous programming.
• Proven experience with RESTful API design and implementation.
• Strong familiarity with Linux-based IT systems and hosting environments. Some familiarity with cloud service providers (AWS, Azure, or Google Cloud) is beneficial.
• Experience with distributed systems and cloud-native applications; including common challenges around reliability, coordination, and data consistency.
• Strong 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, including understanding different workflow strategies and their trade-offs.
• 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.