Debasish Chandra Email & Phone Number

Cambridge, Gb

Oxford, England, United Kingdom

Cambridge, England, United Kingdom

Following Microsoft’s acquisition of Metaswitch in 2021 and the subsequent creation of Azure for Operators (AFO), I have been an integral part of the AFO Voice Core team. My contributions have been pivotal in numerous cloud engineering projects that leverage Azure technology. My role involved: ● Spearheading the delivery of a comprehensive VoLTE automation product roadmap.● Leading the implementation and integration of the VoLTE platform across various AFO customer sites, ensuring seamless service delivery.● Architecting, developing and deploying the Team Presence Gateway for mobile users at Vodafone Netherlands, enhancing communication capabilities.● Executing security enhancements and threat modeling for internal products to bolster cybersecurity measures.● Enhancing CI/CD pipelines and streamlining the product release process to improve efficiency and reliability.● Providing Level 4 support and resolving complex issues reported by AFO customers.

Metaswitch, now a part of Microsoft, has been at the forefront of delivering cloud-native, NFV-ready software products for next-generation telecom networks. In my tenure, I have played a key role in custom development, providing professional services to Metaswitch clients. My responsibilities have spanned solution architecture, design and development, installation, configuration, training, support, and testing. Key achievements include: ● Architecting, developing, and implementing the Telephony Service Platform (TSP) for Teir1 operator Netherlands, encompassing a suite of services such as: o Emergency Routing (ERS) and Dynamic Routing (DRS) across both SS7 IN and IMS networks. o Local Voicemail Deposit (LVD) for SS7 IN. o CLI modification and CLI guarantee for SS7 IN. o Development of an Announcement Server for the IMS network.● Serving as a mentor and technical guide for tier 1operator's (UK) engineering projects, functioning as an embedded developer and utilizing the Metaswitch platform to construct a variety of network services.

Cambridge, United Kingdom

OpenCloud, subsequently acquired by Metaswitch, was renowned for its cutting-edge software products tailored for telecom networks, grounded in the open standards of JAIN SLEE. My role involved spearheading custom development projects to deliver professional services to OpenCloud’s clientele. Notable accomplishments include: ● Engineering an SMS Gateway for tier 1 operator UK, enhancing messaging infrastructure.● Developing and deploying Local Number Portability for tier 1 operator, facilitating seamless number transitions for customers.● Implementing a robust Emergency Number Routing system for tier 1 operator, ensuring critical connectivity during emergencies.● Creating and launching a Community Tone feature for tier 1 operator, enriching the user experience with personalized call tones.

New Delhi Area, India

As the former CTO of Telemune, a software company specializing in telecom value-added services, I was responsible for their product roadmap development, leading the development team and driving technical strategy. In this role, I have: ● Reengineered the technology infrastructure into a distributed, multilevel architecture, enhancing system resilience and scalability.● Developed a service delivery platform for advanced call control and messaging services, significantly improving operational efficiency.● Strategically integrated numerous open-source components to supplant third-party software, optimizing performance and reducing costs.● Provided expert debugging, troubleshooting, and technical guidance, resolving critical issues and ensuring system reliability.● Championed the adoption of agile software development processes, fostering a culture of agility and continuous improvement.● Supplied the pre-sales team with essential technical insights and detailed analyses for Request for Proposal (RFP) submissions, contributing to competitive bids.

London, United Kingdom

RedMatter, a product-centric company, specializes in providing SaaS telephony solutions for SMEs and professional individuals. The company offers a comprehensive suite of hosted voice services, including Hosted PBX, SIP trunking, Mobile Voicemail, Call Recording, and a unique integrated system of voice, email, and chat communications.During my tenure as a Software Engineer at Red Matter, I focused on VOIP and cloud computing technologies, contributing to the following key projects: ● Engineered a distributed redundant file system utilizing FUSE (Filesystem in Userspace), enhancing data reliability and accessibility.● Collaborated with the Freeswitch platform, an open-source softswitch, to develop essential internal modules such as voicemail, MRCP client, and CTI adapter.● Created UniMRCP plug-ins for Loquendo, a renowned TTS and speech synthesizer library, expanding the system’s voice capabilities.● Designed and implemented a billing platform using JBilling, an open-source billing system, to streamline financial operations.

New Delhi Area, India

As the lead architect at Telemune, I was deeply involved in the end-to-end development and delivery of our product suite. Telemune embarked on its journey with CRBT for BPL Mumbai and expanded to provide a diverse array of messaging and voice-based products to telecom operators globally. Our solutions, built on Dialogic’s robust signaling stacks and voice APIs, have been integral to our success. My contributions include:● Crafting MAP, TCAP, INAP, and CAMEL user libraries to facilitate high-level abstraction.● Engineering and deploying key applications such as SMSC, USSD Gateway, Welcome SMS, CRBT, Voice Mail & MCA, and IN Charging Gateway.● Leading the development and presentation of several Proofs of Concept (POCs) to network operators, demonstrating Telemune’s capabilities.● Authoring comprehensive technical proposals in response to RFPs, effectively communicating the value and technical prowess of our offerings.

Hyderabad Area, India

Satyam Computer Services Ltd., which is now Mahindra Satyam, is a globally recognized consulting and IT services firm. I embarked on my professional journey as a Software Engineer at this company where my role involved: ● Providing troubleshooting and offshore client support for BSCS, a comprehensive BSS and OSS system for telecom operators.● Managing and executing change requests, new feature development, and implementation and testing of the Online CDR collection system, enhancing data accuracy and billing processes.● Overseeing change requests, new feature development, and implementation and testing of the Vendor Mediation system, streamlining interactions between customer care and HLR.● Handling change requests, new feature development, and implementation and testing of the roaming clearing house system, ensuring precise encoding, decoding, and validation of TAP & RAP files for international roaming services.