CALLSTATS I/O Oy is a SaaS company based out of Helsinki. We provide products that measure and manage the performance of real-time communications. The callstats.io product helps software developers setting up, building, and scaling real-time communication applications effortlessly and frictionlessly. We are backed by the best! True Ventures from Silicon Valley and Lifeline Ventures from Helsinki have invested into us.

Our culture

• Our solutions aim to excite our customers daily.
• Data is the critical part of our product. We constantly raise the bar on the user-experience.
• Rome was not built in one day. All our projects start small and gradually increase in complexity.
• We are constantly shipping code. Done is better than perfect – the moment when the feature is better than what is already live on the site.

Blog posts related to working at callstats.io

• Getting a New Employee Coding in 30 Minutes
• Learnings from One Year of Using React
• Selecting a New Front-End Framework for Callstats.io
• Check out the Forward Error Correction puzzle at the end of this blog post.

Job description

You will work on our WebRTC client libraries, the libraries allow our customers to send data to callstats.io for analysis. You are expected to keep up with the WebRTC APIs and be able to experiment with various WebRTC platforms.

You have strong fundamentals in algorithms, data structures, statistics, and networking. You love prototyping new tools and features that may help our customers make better data-driven decisions. You are comfortable working with a few programing languages, e.g., Python, C, C++, Java, and JavaScript, and are excited about using new languages and tools as needed. You have experience building apps with the WebRTC API. If that’s you, introduce yourself and let’s build great things together!

What we expect from you

• You have built an app with WebRTC API.
• You are proficient in Javascript and the toolchain (Grunt, less, etc.).
• You are willing to learn and experiment with new WebRTC platforms: Android/iOS.
• You are excited about experiment with new APIs, and build fantastic prototypes with WebRTC.
• You are comfortable writing code at any point in a stack.
• Fluency in spoken and written English.

Extra skills that we value

• Experience in Android or iOS development.
• Reported bugs for a WebRTC code base.
• Contributed code or documentation for an open source WebRTC code base.