Altanai

Fullstack VOIP , WebRTC and media Streams Engineer . I solve real world problems .

Have build secure , fast , enterprise grade SDKs, platforms and applications over telephony, wireless communication and media streaming. I work with audio/video core libraries and drivers to perform video analytics and  ML both on server ( freeswthc , ffmpeg , gstreamer , janus , RTP engine , Wowza etc ) and edge ( native android , pjsip , browser etc )  .

• Current role ,  core voice Engineer at Plivo Communication Limited 
• One of the first core developers at IPC’s cloud trading communication platform , integrated to Oracle SIP application server back end with genband gateway , radisys media server and apache tools .
• Core developer for Jiyo (https://www.jiyo.com) for b2b unified communication , media streaming and API platform development .

Part of innovation and R&D telecom  labs, also worked with the Converged network systems Lab in Tata consultancy services on many next-gen SIP applications for world’s top telecom providers which includes British Telecom , ATnT , Bouygues telecom, Belgacom among others . I have  long working experience on WebRTC APIs and have made 2 full fledged VOIP communication platforms  ( one using SIP as signalling , another using  socket signalling ) . I have hands-on experience in developing Enterprise logic for the telecom application server  in SIP and JAINSLEE using Core and Enterprise Java .

I have a strong command of design patterns and practical experience in process-oriented customer-centric agile environments .

• Low level Designs and development of Voice / VoIP Architecture (Call Control/Signaling, Media, Transport, Applications )
  • Technologies – WebRTC , IMS  , VoLTE , SIP Header Manipulation 
  • Servers – asterisk , kamailio , mobicents , SBC , IPTV , VAS , UC&C,  gateway
  • Protocols – SIP, RTP, RTCP, SDP, ICE, STUN and TURN

• Programming and Algorithms Extensive experience in Multi-threaded programming and network programming in Linux: UDP/TCP, Sockets, IPC.
• Integration of Third party Services and Session Border controllers (SBC)
  • Avaya CM/ IP-PBX, Apropos CCS/IVR, Cisco Gateway/MediaSense
  • Cisco CUCM, JTAPI/CTI, NICE Logger, SIP/PSTN Trunking
  • Microsoft LYNC, Polycom Video Bridge, Cisco 5500 Wireless/AP
  • Genband spider SBC and fcs web sdk integration
  • Jitter management, Packet aggregation, MOS score optimization
  • Security: TLS/SSL, LDAP

IMS domain knowledge (SIP, RTP, RTCP and related 3GPP IMS protocols ) . Video Telephony on LTE and WiFi radio technologies.

• Media Servers and live streaming –
  • Servers – Janus , Wowza , freeswitch , crtmpserver , gst , ffmpeg , live555 .
  • transcoding and multiplexing with MCU and SFU based setup
  • audio codec G711, G722, G729, AMR-WB, AMR
  • video codec like H264, VP8, MPEG4, H263
  • Jitter management, Packet aggregation, MOS score optimization
  • IVR, Speech Recognition, Natural Language Speech , Routing applications,
  • profiling , voice mail , recording
  • Video /Audio Analytics and Machine learning
• IOT and M2m  wireless communication 
  • MQTT, BLE , Rpi , Arduino , shell scripts  
  • Server Side – Java , JavaEE , nodejs , grunt , php , mysql , JavaScript Libraries and MVC frameworks , MEAN, nodejs

I like to contribute to Opensource projects and regularly participate in forums.I have written a book on Integration of WebRTC to Telecom  :

Education and Certifications :

I  have a Bachelors degree in Information Technology form Anna University India ( 2007-11) with 77 %

 Work Experience

• Senior Developer Contract at IPC Systems, Inc.

  Principle developer for IPC Cloud communication solution Unigy360 .

  Tools used webrtc fcs lib from genband , spidr gateway , Freeswitch SBC , Oracle Communication application server , Radisys media manger .

• Senior Software Engineer at Tech Mahindra R&D Cloud systems

  Turret softclient on Webrtc for client IPC System ,Inc , using genband spider signalling gateway and radisys media engine

•  Senior Software Engineer at Above Labs
  Building WebRTC API , signalling and media infrastructure for VOIP , Mp4 parser , media engine , media codecs and bridging , developing algorithms for efficient VOIP mechanisms .
•  System Engineer

  I work on – J2EE ( struts , spring , hibernate , REST WebServices )
  Web ( Jboss tools , jquerry , json , AJAX, JSP , Servlets )
  SIP , IMS , WebRTC

  Internships and Industrial Training in College 2007-11

  ISRO ( Indian Space Research Organization ) ,
  Satish Dhawan Space Centre or Sriharikota Range
  Internship for Satellite Communications and Digital Image Processing – 2008

• Lister Technologies  , SalesForce CRM integration , Internship

  All India Radio Industrial Training  

  BSNL 10 days workshop on optic fibre

  GSOC ( Google Summer Of Code ) -2011IBM TGMC ( The Great Mind Challenge) – 2010 , 11

I have experience in the design and creation of a variety of telecommunication  application ( such as IPTV Parental control, Secure RTP , FMFM ( Find Me Follow Me ) , Enhanced call options ) and a complete understanding of the architecture design . I have an experience of developing webRTC client product with SIP , in a team of four in a short span of 6 months .

Personal

I am organized , enthusiastic and possess outstanding communication skills. Also I have the ability to work under pressure, meet tight deadlines and maintain a friendly environment at all times.

Independent Self Funded Projects

Following are some of my open sourced projects

RamuDroid:

IOT droid to clean roads and outdoors inspired by  bharat swachata abhiyan. Abilities of the droid includes , picking up litter form roads , media streaming in realtime ,  image processing and autonomous decision making through sensory information. Hardware includes Arduino , Rpi B , adafruit BLE , Ultrasonic sensors , GPS , camera  module.

Webrtcdevelopment:

Webrtc libraries for common usecase like e learning ,  p2p call , conference  , desktop share , record and playback. Use Cases multiplayer games, collaborative  draw , coding , AR and media controls are also available.

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About.me : http://about.me/altanai

Academia.edu : https://annauniv.academia.edu/AltanaiBisht

Slideshare : http://www.slideshare.net/altanai

LinkedIn : http://in.linkedin.com/pub/altanai-bisht/11/677/89

Stackoverflow : http://stackexchange.com/users/1481405/altanai?tab=accounts

Github : https://github.com/altanai

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