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Cisco Software Engineer Device Agent United States, Georgia, Atlanta 602379726
03.07.2024
About The Role
We're looking for a senior engineer to work on our Device Agent, which is installed in more than 45 million broadband routers globally. Our agent is written in modern C++, and real world experience of C and C++ is essential. We integrate across many different hardware platforms, with different CPU architectures, but all are based on Linux. A deep knowledge of Linux is essential. The successful candidate would be helping to develop the core of our agent, and the measurements that the agent executes (e.g. speed tests, and application-specific measurements). There's some very exciting developments planned for this agent, and there's a real opportuntity to develop something that's deployed at very large scales here.
What You Will Do- Self-service test scheduling: Our agent is deployed in more than 45 million devices worldwide, and each device is capable of running a variety of network performance tests, as defined by a test schedule. We are redeveloping the scheduling system that generates these test schedules, and will allow our customers to have a high degree of control too. Aside from the obvious scale challenges, we need to be careful to ensure there are suitable safeguards and audit controls here too.
- Triggered testing: This powers our “on-demand” test capability (as opposed to our regular scheduled test capability). Our current system supporting is handling over 12 million concurrent connections, but we want to add many more over the coming year. This system underpins the popular SamKnows RealSpeed product.
- Anomaly detection: Our customers want to derive insights from the data we collect. Some customers collect so much data across so many different dimensions that it can be a bit like looking for a needle in a haystack. We have been working on an anomaly detection system to automate this process and to find the most likely root cause of issues too, using supplemental topology information. This project has huge potential for our largest customers. Our existing prototype uses a variety of innovative techniques to be able to perform the anomaly detection in near real time without incurring huge costs.
- Migration to AWS: We are currently migrating more than 40 applications from SamKnows’s Google Cloud environment to AWS. This is a challenging project given the scale and the requirement to avoid customer downtime.
- Data pipeline: We use Kafka, BigQuery, and Spring Boot to process hundreds of millions of data submissions per day. We continue to add more measurements to support tests for various different games/software/cloud applications.
- The vast majority of our code is written in Java, Golang, and modern PHP. But we are firm believers in the right tool for the job; so if a service needs to scale to millions of concurrent clients, then we will absolutely consider other options. Scalability and resilience is key, as we have large clients all over the globe that rely on us for their day to day operations.
- Enjoyment in building products from scratch and seeing them used globally.
- Proven experience in designing and building systems that are scalable and well-tested.
- Professional development experience in C++ or similar programming languages.
- Comfortable with problem-solving and prototyping solutions.
- Excitement about exploring cutting-edge technology.
- Proficiency with Terraform for cloud resource management.
- Experience with ArgoCD for Kubernetes resource management.
- Familiarity with Kafka and RabbitMQ for message queues.
- Experience with Redis for caching.
- Knowledge of Websockets for real-time communication with devices and clients.
- Experience with MySQL 8 for dedicated service data stores.
- Familiarity with Google BigQuery for our measurement datastore.
- Experience with Docker for app containerisation.
- Familiarity with cloud services, including Github, JIRA, Sentry, and various cloud hosting platforms.
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