


ROLES AND RESPONSIBILITIES:
• Articulate complex problems, communicate viable architecture and design approach in a clear and concise manner.
• Thrive in a collaborative team environment and work with ambiguous product requirements.
• Evaluate opensource technologies, development stack and strive for new learning, continued growth by applying industry best practices and processes.
• Provide thought leadership in cloud based VoIP(Voice/WebRTC) services and bring your passion for technology to motivate and inspire on a day to day basis.
SKILLS REQUIRED
• 4+ years experience in building highly available, fault tolerant and scalable real-time communications(Voice and WebRTC) systems in the cloud (AWS preferred).
• Demonstrated history of building complex, high-performance applications in C/C++.
• Proven expertise in network and system performance optimizations(including kernel, containers and virtualization technologies).
• Proficiency in telecom protocols (SIP, SDP and RTP/RTCP) and internet protocols(IPv4/IPv6, TCP and UDP) is desirable.
• Deep understanding of all aspects of WebRTC from audio codecs, to networking (ICE, STUN, TURN) up to server side components needed to deploy the technology at scale (SFU, MCU, Relays) and network security(TLS, SRTP).Strong analytical, problem solving and troubleshooting skills.
• Programming experience with Python, Golang and Lua will be a plus.
• Prior experience working with Asterisk, FreeSWITCH, RTPEngine, Kamailio, or OpenSIPs will be a plus.

About K12 Techno Services
About
K12 Techno Services Pvt. Ltd was incorporated in the year 2010 and with its registered office in Bangalore is a leading education service provider in India, offering a dynamic suite of academic support, services and solutions to schools. The upgraded teaching methodologies, blended with effective use of technology has been the main idea behind the organization i.e. to pave the way for a global approach towards education. With its band of services, facilitate schools to leverage on its strength.
Planning academics and its execution with teachers and resource management are some of the key features of our academic support and services. We provide a combination of digital media supports, including multimedia teaching aids in the form of text, images, audio-visual mode to facilitate a multi-sensory approach to knowledge sharing. We also train and support the teachers throughout the academic year, for effective classroom management practices.
Our range of offerings:
- Orchids The International Schools
- Sparkle Box - Education Kits (Preschool – 10th Grade)
- AOL Online Schools
- Plufo - Online Tuitions (Preschool – 8th Grade)
- Eduvate (ERP – School Management)
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Job Title:
Telephony Engineer
Job Description:
- Support the operations team with debugging issues related to the telephony platform
- Identify issues with calls using monitoring and analysis tools such as VoIPMOnitor
- Write scripts to automate tasks, monitor the services and functionalities
- Contribute to the improvement of the system by providing ideas
- Help with capacity planning
- Perform the scheduled maintenance activities
- Modify the existing code to accommodate new features
Experience Range:
3- 6 years
Educational Qualifications:
Any graduation,
Job Responsibilities:
• Knowledge of open source technologies, VoIP, SIP, WebRTC etc.
• Shell scripting.
• Experience in Asterisk and Kamailio or OpenSIPS.
• C/C++ or JS programming with Linux.
• 5-8 years experience.
• Good communication skills.
• Willingness to work in the night, whenever required, for handling support related issues.
Skills Required:
ViOP, OpenSIPS, SIP, Shell Scripting, Asterisk, kamailio, C++, Linux, Development,

Talented C++ Developer who has experience in design, development, debugging of multi-threaded large scale application with good understanding in data structures on Linux packaging, functional testing and deployment automation very good with problem solving.
Key responsibilities :
- Understand fundamental design principles and best practices for developing backend servers and web applications
- Gather requirements, scope functionality, estimate and translate those requirements into solutions
- Implement and integrate software features as per requirements
- Deliver across the entire app life cycle
- Work in a product creation project and/or technology project with implementation or integration responsibilities
- Improve an existing code base, if required, and ability to read source code to understand data flow and origin
- Design effective data storage for the task at hand and know how to optimize query performance along the way
- Follow an agile methodology of development and delivery
- Strictly adhere to coding standards and internal practices; must be able to conduct review code
- Mentor and possibly lead junior developers
- Contribute towards innovation
- Performance optimization of apps
- Explain technologies and solutions to technical and non-technical stakeholders
- Diagnose bugs and other issues in products
- Continuously discover, evaluate, and implement new technologies to maximize development efficiency
Must have / Good to have:
- 5-7years' experience with C++ development and relevant 3+yrs in modern version 11/14/17 would be a plus.
- Design and implementation of high-availability, and performance applications on Linux environment
- Advanced knowledge of C/C++, Object Oriented Design, STL
- Good with multithreading and data structures
- Develop back-end components to improve responsiveness and overall performance
- Familiarity with database design, integration with applications and python packaging.
- Familiarity with front-end technologies (like JavaScript and HTML5), REST API, security considerations
- Familiarity with functional testing and deployment automation frameworks
- Experience in development for 3-4 production ready application using C++ as programming language
- Experience in writing unit test cases including positive and negative test cases
- Experience of CI/CD pipeline code deployment (Git, SVN, Jenkins or Teamcity)
- Experience with Agile and DevOps methodology
- Very good problem-solving skills
- Experience with Web technologies is a plus.
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- Experience 4 - 8 years
- Key Skills for Software Developer C++, Linux :
- - Looking only for candidates who can join immediately or max 10 day
- - should be able to work independently with no handholding
- - the ability to work with C/C++ code on Windows/Linux platforms
- - Database knowledge of MSSQL, Oracle, MySQL/MariaDB, ideally other ones too: Saphana, Teradata, Postgres.
- - Ability to work on their own fixing defects
- - should be able to understand secure coding practices
- - should have the Ability to work independently and with the team across different time zones


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Perform analysis, design and implementation of assigned projects using sound engineering principles and adhering to business standards, practices, processes, and product / program requirements
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Engage with global teams to effectively translate customer requirements to software requirements and identify potential solutions that are optimized to operate with in constraints of the product
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Troubleshoot variety of complex software problems
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Provide timely status updates and proactive communications on issues to the stakeholders.
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Able to interface with internal and external stake holders regarding software issues.
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Contribute as part of teams put together to meet overall organization initiatives/objectives
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As a technical lead,
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Guide team efforts towards successful deliverables.
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Provide technical leadership to teammates through coaching and mentorship.
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Able to effectively manage escalations and operate under crisis
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Have the ability and willingness to acquire in-depth understanding of domain and existing products (beyond software) and apply that knowledge to develop new products and to deliver enhancements/ fixes for customer requirements.
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Background in Industrial Automation
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Prior experience in supervisory control systems software
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Bachelor of Engineering degree in Computer Science/Information Science/Electronics/Electrical/Instrumentation with strong back ground in Industrial automation software
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Strong C, C+ programming on variety of Windows platforms using Microsoft technologies
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Sound knowledge of Computer Science fundamentals data structures, algorithms, operating system concepts
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Excellent analytical skills, methodical problem-solving skills and troubleshooting skills
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Prior experience of working in global teams and interfacing with multiple stake holders
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Excellent communication skills (verbal and written) and the ability to interact with extended teams spread across the globe.
VOIP Developer
- Knowledge on PSTN lines
- Good understanding of TCP/IP protocol stack and practical knowledge of LAN / WAN
- Good knowledge of value-added features such as Voicemail, ACD, IVRS, CTI, etc
- Familiarity with SIP / SDP protocol / Softphones
- Familiarity with OpenSIPS, Kamalio
- Familiarity with Freeswitch
- Familiarity with MySQL
- Knowledge of Linux / server administration
- Familiarity with C language
- Firewall, Security
- Knowledge of WebRTC
- Standard features of Enterprise Communication Servers (PBXs)
- Problem Troubleshooting and debugging techniques (both Hardware and Software)



- Develop embedded Linux Applications
- Work with a worldwide team to integrate the product to meet the requirement
Required Qualifications:
- Degree in Computer Science from a top-tier institution
- Relevant full-time work experience of 4+years
- Strong foundation in computer science, Object-Oriented software, unit testing & test automation with scripts
- Ability to self-teach.
Mandatory Technical Skills:
- Expert level programming in C/C++
- Linux systems programming, data structures & algorithms
- Networked applications
Desirable Technical Skills:
- Linux Board Bring up, device drivers would be an advantage


As part of the role, the Developers / Senior Developers will be responsible for Design, Coding, and Integration while meeting the quality targets set for the project. The Tech Leads will be additionally responsible for Estimation, Architecture, Design, Technical Reviews, Customer Interaction, Building, and Mentoring a talented team of Engineers
Knowledge & Skills:
- Technical Experience on Physical Layer of 3GPP LTE
- Experience on DSP Development\
- Proficient in C Good
- understanding of Wireless Communications
- Experience on MAC-PHY interface
- Behavioral Interpersonal skills & Ability to work in team
- Good Communication Skills Good Analytical Skills
Desired Skills and Experience:




