Senior Software Engineer - APIs & Support Systems

Emnify

Berlin (Berlin, Germany, Germany, Remote, Poland) Remote permanent

Posted: March 10, 2026

Required Skills

Job Description

Your Role

You will join our EXP Squad, building the customer-facing APIs and backend systems that power how enterprise customers manage and automate their IoT connectivity. These are production systems that directly impact adoption, scalability, and reliability.

As a Senior Software Engineer, you will operate at the intersection of product thinking and technical excellence. You will not just implement tickets, you will own features end to end. From early discovery and architectural design to rollout and iteration, you will shape scalable, secure, and extensible systems.

Our core stack includes TypeScript, Node.js, and NestJS, running on AWS with Infrastructure as Code.

Location: Berlin, Würzburg, remote within Germany, remote within Poland.

Your Impact

• Design and deliver scalable, customer-facing backend capabilities from architecture to production.

• Drive API and system design decisions with long-term scalability, security, and maintainability in mind.

• Collaborate closely with Product, Design, and other engineering teams to translate complex requirements into clean technical solutions.

• Improve reliability, observability, testing practices, and architectural standards within your domain.

• Contribute to mentoring, hiring, and raising the engineering bar within the team.

Your Skills

• Strong experience building scalable backend systems with TypeScript and Node.js, ideally using NestJS.

• Proven track record designing and evolving REST APIs in production environments.

• Solid experience with AWS and Infrastructure as Code, especially Terraform.

• Hands-on experience with data modeling and performance optimization in SQL or NoSQL databases.

• Demonstrated ability to own features end to end and make sound architectural trade-offs.

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