Careers at 2600Hz

Requirements

• 2+ years of programming experience about customizing / contributing to Kamailio and Freeswitch open-source projects.

• Strong understanding of real-time programming languages, e.g. Erlang

• Strong understanding of web technologies: HTML5, Javascript, CSS/SASS, REST, JSON
  

• Strong database fundamentals and experience with CouchDB
  

• Advanced CS degree or equivalent work experience
  

Nice to also have

• Experience with JIRA and Agile/Scrum development style

• Knowledge of one or more server-side programming languages

Needs to be comfortable with

• Working from home (flexible hours - we are all over the world!)

• Working with a team

• Receiving feedback and suggestions for enhancements

• Working on multiple projects at a time

• Fanatical about security and privacy

• Ability to problem solve and troubleshoot in multi-tier environments

• Knowledge of Linux/UNIX, HTTP, and networking

• Familiarity with at least one scripting language such as Python

• Familiarity with Bash Shell scripting

• Experience using async message queues

• Mastery of git and Github workflows

Responsibilities

• Develop back-end applications for high-performance system integrations

• Develop front-end visuals for specific system integrations

• Become a specialist in one or more products or in a particular technology domain, depending on your personal interests and capabilities
  

• Grow as a technological expert and share your knowledge by coaching, training and teaching
  

• Apply agile practices and benefit from its iterative approach competencies
  

You are

• A creative, fast learner with a great passion for software product integration

• Enthusiastic and enjoy working collaboratively in an agile environment with a desire to learn and expand your knowledge and experience

• Eager to understand how complex devices and systems operate in telecom and broadcast industries, among other
  

• Detailed with the ability to capture all corner cases and to deliver high-quality results
  

• Adaptive and enjoy digging beneath the surface to understand how things work
  

• A hands-on person who takes initiative to move the team and projects forward
  

• Enjoy keeping abreast of the latest security vulnerabilities
  

• Genuinely willing and motivated to learn and undertake self-initiated training
  

• Understand the principles of secure development practice and have a solid understanding of source control systems
  

• A good verbal and written communicator in English
  

Technical skills

• Strong knowledge of FreeSwitch

• Translating requirements and designs into high-quality, secure code

• Debugging internally- and externally-reported issues, and taking both individual and collective responsibility to maintain optimal performance of applications at all times

• Working within the agile team and participate fully in all team meetings, sharing knowledge with the team and wider department

• Participating in peer code reviews, both as reviewer and reviewee

• Erlang experience is greatly appreciated but not necessary

• KAZOO experience will win you brownie points!

• Implementing and maintaining automated unit and functional tests where appropriate

• Creating utilities to aid testing & diagnosing issues

• In-depth knowledge of key voice protocols including SIP, RTP

• Configuration and customization of open-source SIP Proxies such as OpenSIPS, OpenSER, or Kamailio

• Ability to extend server-based applications via third-party APIs

• Previously built applications on cloud infrastructure

What's in it for you?

• Gain experience with a vast array of cutting-edge technologies

• Be part of a team that has a disruptive impact on the global media and broadband industry

• Work in an international company while still enjoying the advantages of a small-company culture

• Healthy work-life balance

• An attractive gross salary, depending on your job category and professional experience

Typical activities you would perform on any given day:

• Create features and fix bugs from the JIRA ticketing system

• Build test tools to validate features and fixes

• Review pull requests from other developers (both internal and from the community) and have your pull requests reviewed
  

• Respond to community queries on IRC/groups/community site
  

• Give internal presentations on new features
  

• Conduct 3-day trainings on Kazoo
  

• Travel to conferences to spread the good word
  

What are we looking for?

Core technologies leveraged that you would need to get to know:

• RabbitMQ

• FreeSWITCH

• Kamailio

• CouchDB (BigCouch)

Protocols used:

• AMQP

• XMPP

• HTTP

• SIP

Responsibilities

• Prototype internal ML tools and products, across both public APIs and local models, across both cloud and on-premise.

• Collaborate closely with cross-functional teams to gather ideas for useful new tools and products and implement them into working PoCs

• Stay updated with the latest advancements in ML and apply them to enhance our software offerings.
  

• Conduct research on SOTA ML techniques and integrate them into your PoCs
  

• Document software designs, technical specifications, and development processes you used for said PoCs to ensure effective knowledge sharing and maintainability.
  

Qualifications:

• Prior experience developing ML, even if it’s not a production-ready system. We appreciate proof-of-work and links to code.

• Proficiency in Python and its ecosystem, with experience in developing and deploying Python-based ML solutions.

• Familiarity with JavaScript and front-end development. Front-end work on an ML project would be a significant boost.

• Strong problem-solving skills and the ability to work independently with significant amounts of autonomy

• Good communication and interpersonal skills, with the ability to effectively convey technical concepts to both technical and non-technical stakeholders.

• Familiarity with machine learning APIs, frameworks and libraries such as TensorFlow, PyTorch, or the OpenAI API.

• Understanding of software development principles and best practices.

• Experience with version control systems (e.g., Git) and collaborative development workflows.

• Strong problem-solving skills and the ability to work independently with significant amounts of autonomy

• Good communication and interpersonal skills, with the ability to effectively convey technical concepts to both technical and non-technical stakeholders.

Bonus experience (not required but nice to have)

• Some exposure to C++ development and writing high-performance code to run as bare metal as possible.

• Experience running ML models locally, either on-premise or on the cloud.

• Understanding of how ML engineering differs from software development, and how to tweak the process to best fit.

  Understanding of how ML engineering differs from software development, and how to tweak the process to best fit.

• Exposure to ML-specific version control and collaboration workflows i.e. Weights and Biases, HuggingFace

We’re a new and fast-moving ML R&D team. Join us and help build the future of machine learning in telecoms.

Responsibilities

• Create and maintain detailed, comprehensive, and well-structured manual and automation test plans, test cases, scripts and procedures

• Automation and manual test execution, including feature and regression tests/test plans

• Plan and coordinate testing activities, thoroughly identifying and tracking bugs using appropriate tools like Jira
  

• Provide feedback and recommendations to developers on software usability and functionality
  

• Update manual and automated test scripts to ensure currency
  

• Conduct historical analyses of test results
  

• Perform risk-based, ad hoc, and exploratory testing
  

• Write and maintain test inventories; install and maintain applications on test environments
  

Qualifications:

• 3-5 years of experience as a Quality Assurance Engineer

• Good Background in Bash, Python, Java or Groovy Scripting

• Significant Automation experience in UI/API testing using tools involving Selenium

• Familiarity with GitHub

• GNU/Linux and CENTOS knowledge

• Experience working in software development teams and using software QA methodologies and tools

• Strong analytical and problem-solving skills

• A sense of ownership and pride in your performance and product deliverables

• Great interpersonal and communication skills

• Ability to speak and write fluent English

• Must be able to work autonomously

Bonus experience (not required but nice to have)

• Performance or security testing

• Katalon Automation Framework

• VOIP technologies and/or networking protocols, including TCP/IP and SIP

What’s in it for you?

• Experience with a vast array of cutting-edge technologies

• The chance to be part of a team that has a disruptive impact on the global media and broadband industry

• The opportunity to work in an international company while still enjoying the advantages of a small company culture

• Healthy work-life balance

• An attractive salary, determined by your professional experience

Responsibilities

• Develop and maintain detailed technical designs for Trunking.io systems and applications, with priority given to factors such as performance, scalability, and reliability

• Configure and deploy SIP-based systems and applications, ensuring that they are properly integrated with other 2600Hz network and telephony infrastructure, such as switches, gateways, and underlying carrier endpoints

• Monitor and maintain the health and performance of Trunking.io systems and applications, using tools such as monitoring software, system logs, and performance metrics
  

• Continuously evaluate and optimize the performance of Trunking.io systems and applications, using tools such as load testing, stress testing, and capacity planning
  

• Act as a technical escalation point for both internal and external issues related to Trunking.io systems and applications, using advanced troubleshooting techniques to quickly diagnose and resolve issues
  

• Establish and maintain strong working relationships with vendors and service providers of related products and services, serving as a primary technical point of contact for communication and collaboration
  

• Stay up to date with new and emerging standards and protocols related to Trunking.io systems and applications, and evaluate their potential impact on the organization's telephony infrastructure.
  

Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field

• Minimum of 3-5 years of experience in designing, configuring, and maintaining SIP-based systems and applications

• Extensive knowledge of SIP protocols, VoIP, and Networking technologies

• Experience with Kamailio, OpenSIPS and FreeSWITCH

• Strong problem-solving and troubleshooting skills

• Excellent communication and collaboration skills

• Ability to work independently and as part of a team