Backend developer in a fast growing company shaping a circular future

As a Norwegian tech company with global ambitions, we need to strengthen our software team.

Do you want to develop technology that solves one of the most challenging resource and climate problems of our time?

GRIN is in an exciting growth phase, delivering in multiple European markets simultaneously. The work you’ll take on will be essential in ensuring software solutions that scales whilst providing our customers with new and better digital products.

Company Overview:

We are a growing startup looking to expand our engineering team with a senior developer. Our current team is led by a lead developer, and we seek engineers who can own their work, take initiative, and bring strong technical and communication skills to the team.

Role Overview:

We are looking for proactive, accountable developers (senior level) who can:

• Take ownership of tasks and work independently.

• Collaborate closely with the lead developer.

• Identify, create, and manage their own tasks based on product needs.

• Contribute not just code, but also ideas and structure to improve codebase and processes.

Tech Stack:

You must be confident working with most or all of the following:

• Backend: Node.js, TypeScript, REST APIs

• Database: PostgreSQL (Aurora Clusters on AWS), Dynamo DB

• Infrastructure: AWS (EC2, RDS, S3, Lambda, etc.), IOT MQTT,

Key Responsibilities:

• Take ownership of features and deliverables end-to-end.

• Propose and implement improvements to existing code and processes.

• Translate product and business requirements into technical solutions.

• Collaborate with the lead developer to plan and prioritize work.

• Write clean, maintainable, and testable code.

• Help build internal tooling or deployment automation where needed.

Ideal Candidate:

• 4+ years of hands-on software development experience.

• Frontend experience, bonus if with Next.js (React + SSR)

• Experience working in a team and independently.

• Strong initiative: Can define tasks, not just take tasks.

• Strong communication skills.

• Strong experience with databases and message brokers.

• Strong experience on distributed systems, financial systems, monitoring systems.

• Experience with startups or fast-paced agile teams is a plus.

At GRIN, we are on a mission to disrupt unsustainable consumption and lead the circular revolution. Based at StartupLab in Oslo Science Park—the epicenter of Norway’s tech start-up scene—we design and build cutting-edge solutions that help global companies shift from linear to circular business models.

From sensors and hardware to AI, cloud solutions, and new digital services, we innovate across the stack. As part of our team, you will directly shape a fast-growing tech-company while contributing to a more sustainable future.

We offer:

• Great team and working environment

• Competitive salary and stock options

• A great opportunity to see the immediate impact of your work, when you succeed - we succeed!

• Fantastic networking capabilities at the heart of the Norwegian tech scene

• Health insurance

• Flexible work arrangements

• 5 weeks of vacation

Why Join Us?

At GRIN, you won’t just develop software —you’ll help shape the future of a company driving systemic change in global consumption. This is your chance to step into a developer role where you make both technical and meaningful impact.