Senior Software Engineer
Queue-it
About us
Queue-it is a global tech scale-up that helps the world’s biggest brands manage their busiest online moments. Our virtual waiting rooms prevent website crashes and bot abuse, ensuring a smoother, fairer digital experience for billions of users. No matter the demand, we give businesses peace of mind so they can deliver the online experiences they’ve worked hard to create.
At Queue-it, our strength lies in our people. With a team representing 40+ nationalities across offices in Denmark, the U.S., South Korea, Japan, and Australia, we thrive in a global, collaborative environment. Our workplace is enriched by diverse perspectives and teamwork across cultures.
Role, Purpose & Impact
We are seeking a motivated and experienced Senior Software Engineer to help design, build, and maintain our cloud-based, real-time data infrastructure. You’ll contribute to scalable, secure, and high-performance backend systems that power our streaming, processing, and analytics platforms, working closely with cross-functional teams to deliver reliable solutions for critical business needs.
Key responsibilities
- Design, develop, and maintain backend services and microservices using C# / .NET Core.
- Build and operate cloud-native solutions on AWS (or other major cloud platforms).
- Architect, implement, and maintain real-time data streaming pipelines using Amazon Kinesis, Apache Kafka, or similar technologies.
- Integrate streaming pipelines with internal systems such as databases, APIs, and data lakes.
- Collaborate with product owners, data engineers, DevOps, and other teams to deliver reliable, scalable solutions.
- Ensure high availability, performance, and security of distributed cloud systems.
- Participate in code reviews, testing, debugging, and production troubleshooting.
- Create and maintain clear, high-quality technical documentation for services, APIs, data flows, and architectural components.
What you’ll bring
- Several years of backend engineering experience (e.g., 4+ years) with a focus on C# / .NET Core.
- Hands-on experience with cloud platforms such as AWS, including key services (ECS, ECR, S3, Lambda, IAM, Kinesis, etc).
- Practical experience with streaming platforms (Amazon Kinesis, Apache Kafka, or related).
- Good understanding of distributed systems, event-driven architectures, and microservices.
- Familiarity with containerization (Docker), orchestration (Kubernetes or similar), and general DevOps concepts.
- Strong analytical and problem-solving skills, plus the ability to work effectively in an agile environment.
Nice-to-Have
- Experience contributing to or improving CI/CD pipelines, automation, or infrastructure-as-code (Terraform, CloudFormation, etc.).
- Frontend experience with modern frameworks, especially Angular.
- Monitoring, logging, and observability knowledge for distributed cloud systems.
- Understanding of cloud and streaming security best practices.
- Experience with ETL pipelines, data frameworks, and additional programming languages.
Why you'll love working with Queue-it
Global & Collaborative
A workplace enriched by international perspectives (40+ nationalities), fostering teamwork across cultures.
Community
A strong sense of belonging, built through social activities and shared experiences.
Trust
Reflected in both our product and workplace culture. You’re trusted to work in a way that suits you best, following our strength-based approach. We also value your opinions, embracing a typically Danish flat hierarchy across all our offices.
Growth-Oriented
We prioritize professional development, open communication, and opportunities to thrive.
About the office(s)
In this role you will be working in Vesterbro in the heart of Copenhagen. This is Queue-it’s largest office and global headquarters. Our space is designed to support both collaboration and focus, with an open-plan layout, quiet rooms, and dedicated areas for deep work. For fun and downtime, we have a ping pong table, foosball, and regular social activities. You’ll also enjoy daily snacks, fresh fruit, great coffee, and access to a subsidized canteen in the building.
Department
Product & Technology
Role
Senior Software Engineer
Locations
Copenhagen - DK
Employment type
Full-time
Language
English
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