Twilio is providing a platform for building modern, communications-enabled applications that are cloud based, scalable, and focused on great user experience.
More than 200,000 developers have signed up to be a part of this disruption, building everything from call centers (Zendesk) to SMS notifications (Uber).
Twilio customers include great brands like airbnb, eBay, Hulu, Intuit, LinkedIn, Quora, Sony, SurveyMonkey, Trulia and WalmartLabs.
Twilio is energizing the $1.3 trillion telecom market. Come help us change communications forever.
About the job:
As a Senior VoIP Engineer you will be a part of the core engineering team developing the Twilio Client.
You will design and build reliable, scalable infrastructure to power large numbers of mobile and browser clients accessing Twilio’s Client.
You will work with a motivated team of Twilio’s iOS, Android and WebRTC experts to enhance the Twilio Client and the backend infrastructure that supports it.
Successful candidates will be strong developers with experience shipping high-profile user-facing products, working in large code bases, and engineering features for security, scalability, & high availability.
Drive the design and architecture of Twilio Client.
Build server-side components using an open-source stack comprised of Linux, Apache/Nginx, MySQL/Redis.
Collaborate with product management to define, architect, and build new customer-facing features.
Own, operate, and maintain your team’s services in production.
Tackle some of the most challenging problems in mobile and web communications.
Write quality, maintainable code with extensive test coverage in a fast-paced professional software engineering environment. What language? You name it, we got it: Java, Python, PHP, Ruby.
5+ years of professional software development experience developing distributed systems.
Experience with one or more protocols used in our stack: WebRTC, SIP, SDP, RTP, RTCP, RTMP.
Programming background in Python or Java.
Deep experience in: TCP/UDP and HTTP/HTTPS protocols, scalable systems that manage connectivity over unreliable networks, knowledge of persistent layers using relational and/or NoSQL databases, and server-side programming in Java and/or Python.
Strong communication skills. Experience standing in front of non-technical audiences and explaining technical issues.
Ability to write maintainable code with extensive test coverage and work in a professional software engineering environment (with source control, dev / stage / prod release cycle, continuous deployment).
Proven ability to work on closely-knit teams using Agile tools for tracking progress, issues, etc.
Enthusiasm for working in a fast-paced startup. We ship to thousands of people on a very regular basis with tight schedules and small teams, and it takes a certain kind of energy and drive to get it done!
Passionate. Persistent. Creative. You find clever ways around problems, or just plow through them.
Experience using VoIP tools and frameworks such as SIP servlets (JSR 289), SIPunit.
Knowledge of SIP stacks such as JAIN SIP and PJSIP.
Understanding of media codecs and transcoding.
Work with audio/video applications.
You contribute to or maintain an open source project.
You have a strong passion for security.
You've developed an app using Twilio Client stack.
Competitive benefits, including medical, dental, vision, 401k and life insurance.
An Amazon Kindle, $30/month to spend on books and a Twilio track jacket after demoing your first Twilio app in front of the company!
Pre-tax commuter benefits.
Catered lunches and a weekly team dinner featuring invited technology and entrepreneurial speakers.
Excellent gear (we ❤ Apple computers and big monitors — two if you need 'em).
A strong belief in life/work balance.
How to apply:
Want to stand out? Sign up and build an app using the Twilio API. Include a link to it in your cover letter.
Bonus points for pointing out bugs or things that annoyed you/could be better about the platform.