Principal Java Developer(Docker,K8, Telephony)

RingCentral's cloud-based communications platform connects more than 2 million users across the world. RingCentral RingCX offers a collaborative environment and is committed to providing outstanding service for its customers. 

Are you looking for an opportunity where your skills and passion make a difference and where your voice will be heard? 

We’re the #1 global cloud-based communications provider, growing at more than 30% annually, and we’re looking for team-members with an entrepreneurial spark!

What if you had the freedom of a startup and the resources of a global enterprise?

That’s exactly the kind of environment we’re building together at RingCentral.

As a member of the RingCentral RingCX Engineering team, you’ll tackle complex, mission-critical problems and build the platform that’s changing the way the world communicates. RingCentral RingCX is CCaaS solution that serves businesses large and small, providing highly reliable uptime, scalability and flexibility to support any business need or workflow.

We are looking for Software Development Engineers that will work and collaborate on teams and projects with responsibility for designing and delivering secure, distributed, scalable and fault tolerant services, end-user applications and APIs. In this role, you will have an opportunity to use your engineering expertise & leadership in the delivery of cloud-hosted (AWS, Azure) SaaS systems. You will work on complex, event driven services adhering to agile engineering practices and processes with a strong focus on automation. Driving improvement in all aspects of your work will be all part of your day to day with the RingCX team.

You should be motivated, organized, excited about technology and SaaS products, a thorough critical thinker, and relentless when it comes to code quality, scalability, latency, and platform stability. Our culture is motivational, constructive, and positive. We value teamwork, camaraderie, and collaboration. If you’re up for a fun challenge, we want to hear from you!

Responsibilities:

• Work with architects and business owners on clarifying requirements, provide feedback, offer technical solutions, provide implementation estimates.

• Plan and coordinate work between cross-functional and geographically distributed teams to assure timely implementation and delivery to production environment 

• Be a technical leader and a go-to person for your area, and a sounding board for other peers in other areas and teams.

• Coach junior team members, work across engineering teams, provide technical leadership and make it happen. 

• Work in close communication with RingCX SRE team on performance and quality of the RingCX services

• Review requirements and translate them into technical implementation – focusing on responding with output that delivers on the business value.

• Follow RingCentral internal coding style and principle to design and implement business system based on requirements

• Promote and contribute to all aspects of employing automation, across all test layers and development pipelines. (from unit through functional up to and including end to end/system/solution test).

• Seek to maximize test coverage across all test layers by contributing to test case backlog and implementation using wide variety of test and test automation frameworks

• Push boundary for continual quality and automation on code base and product

• Build/Create modern backend services and APIs to operate in real-time/near real-time system/domain

• Perform design, architecture and code reviews for your RingCX team & other developers and continuously look for opportunities to improve and optimize code quality

• Effectively communicate and collaborate on design and technology with management and other engineering teams

• Push for continual improvements of engineering processes and tools 

Qualifications:

• Bachelor's degree in Computer Science, Engineering or a related field or equivalent, is required

• 8+ years in an engineering software development role building backend services and APIs having experience with SaaS, event driven, highly available, scalable, resilient systems delivering enterprise grade commercial cloud services.

• Strong problem solving skills, can-do attitude with the ability to analyze, troubleshoot, and solve a wide range of technical problems

• Experienced with agile-type rapid development, CI/CD

• Great communication skills; ability to effectively present ideas and thoughts

• Willingness to take ownership of the tasks and to achieve targets with minimum supervision

• Java or having programming language skills suitable for media server development (Rust, C++  etc)  SIP, k8s, Asterisk

• Experience with ReST, gRPC, Kafka, K8s, Docker, Spring Boot, Prometheus, Grafana, AWS & Azure services.

• Experience with event driven design, distributed systems, containerization & multi-threaded programming

Nice to have:

• SIP Experience – the more the better

  • as a client (RFC3261, MSML)

  • as a server (RFC3261)

  • as a B2BUA

  • 3pcc

• Media Experience – the more the better

  • RTP/RTCP

  • Codecs (PCM and G.711)

  • Jitter buffer

  • PLC (G.711)

  • Timing (clock)

  • Audio real-time processing (mixing)

  • Audio post-processing (audio file (PCM WAV) to/from raw audio streams (G.711))

• Experience with MySQL/Aurora, MongoDB, DynamoDB, CouchBase DB, S3/Athena

• Experience with message bus and streaming technologies (Kafka, ActiveMQ)

• Experience with Telecoms and VoIP is a plus

• Experience building real-time/near real-time application is a plus

• Demonstrated experience deploying applications and API services of Enterprise grade that scale to thousands of users

About RingCentral

RingCentral is the worldwide leader in cloud-based communications. Our software communications platform delivers phone, group chat, mobile communications, video calls, videoconference, contact center and AI-driven digital engagement. It’s a powerful, global presence that allows businesses to communicate anywhere, anytime with anyone. 

RingCentral is headquartered in Belmont, California and has offices around the world. 

RingCentral is an equal opportunity employer that truly values diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.