Mannu_Kumar_CV
- 1. CURRICULUM VITAE Mannu Kumar E-mail: mannu.ray@gmail.com Phone No: - +91-9654223480 CAREER OBJECTIVE To contribute effectively for a developing and innovative organization with my abilities and skills. And to develop intellectual and professional qualities in a challenging and creative work environment. PROFESSIONAL ABRIGMENT A dynamic professional with ~8 years of rich experience in software Design & Development .Currently associated with NEC Technologies India Ltd. as Senior Technical Lead. Expertise in end-to-end design and development of software product from Requirement Analysis to Planning, Scheduling and Estimation, Design, Development & Delivery. Domains Storage, Cloud Storage(OpenStack SWIFT) ,Distributed System, EDA OpenStack Technologies Swift, Ceilometer, Keystone, HA Load Balancer, Operating Systems/Platform OS : Linux Languages C++, Python, PERL, bash, lisp Software Dev Tool Editor: Vim, Kile, Eclipse Compiler: G++,GCC Debugger: GDB Others: C++ Boost library, Boost Python, RPC, Scons, Valgrind, Gcov, coverage, Lex, Yacc Scripting Lang Python, Bash, PERL, lisp Version Control GIT, CVS Bug Tracking Jira Project Management MS Office, Jira Modeling Tools Star UML DETAIL OF WORK EXPERIENCE Project Description: HYDRAstor is the flagship project of NEC Corporation in enterprise storage market. It is a scalable, secondary storage solution based on the GRID storage architecture May 2014-till date Customer NEC Corporation, Japan Duration of Project 1.5 Years
- 2. Customer NEC Corporation, Japan Team Size 20 Scale 70,000 LOC (New development) Phase#1 development: 25,000 LOC Phase#2: 45,000 LOC Technologies Domain: Storage/Cloud/Distributed System Language: C++, Python Roles and Responsibilities Involved from conceptualization of this idea to an actual product. Details: It targets enabling NEC to enter into Cloud Domain i.e. Development of Object Storage Support (REST Interface) over HydraStor using Openstack SWIFT. This complete support included multiple challenges of: Database library for Sequential File systems. Support on SWIFT for file systems with no extended attributes. Introduction of transactional layer for storage appliance with less time coherency. Design a complete distributed system where read/write can be done from multiple nodes at same time. Provide High Availability, Fault toleration, minimum recovery time. Distributed monitoring system who monitors all the service locally, identified failure, do recovery and distributed its responsibilities among other nodes in minimum time. This models works in Master-slave model (where one active Master and multiple active slave) Roles Performed: Involved in all phases of this development i.e. from conceptualization of this idea to an actual product. Involved in Requirement gathering. Done several POCs for feasibility study: POC for support of SWIFT on file systems with no extended attribute support. Designed asynchronous data base library suitable for non-sequential file systems. Designed Transactional Library to make SWIFT compatible with storage appliance with less time coherency. Designed distributed monitoring system to provide high availability of system. Design a new global leader election Algorithm in distributed system on basis of global file system (GFS). Development of Asynchronous interfaces for Database library. Involved in designing of testing framework for the product. Resolved integration issues while integrating this solution with SWIFT and Hydrator. November 2013-May 2014 Customer NEC Corporation, Japan Duration of Project ~6 Months Team Size 5 Scale 15,000 LOC (New development)
- 3. Customer NEC Corporation, Japan Multiple feature of HydraStor are supported Technologies Domain: Storage Language: C++, Python Roles and Responsibilities Involved from requirement till testing Details: DDS is a backup system that used NEC Hydrastore as secondary backup and provided backup and restore functionality for NEC primary storage M-Series It provide bakup and restore from primary M-Series server to HYDRAStor iSCSI interface. The core engine for copying and restoring backup is written in c++. New buffer manager is written to manage unlimited memory usage in case there is no network connection and stop the operating system form using the whole memory. Various client can connect to it via xmlrpc interface. Roles Performed: Involved in all phases of this development i.e. from requirement till testing: Designed the core framework of state daemon. Designed and implemented core backup and restore engine. Designed memory management module. Design and implemented a testing framework in Python to test it. Design and implemented unit test framework for the server and client. July 2011-November 2013 Customer NEC Corporation, Japan Duration of Project ~2.5 years Team Size 5 Scale 25,000 LOC (New development) Multiple feature of HydraStor are supported Technologies Domain: Storage Language: C++, Python Roles and Responsibilities Involved from requirement till testing Details: HydraAgent is one of the component of HYDRAstor product and is used as an interface between BE and GUI/CLI. From GUI/CLI request (Example: state of the system, capacity, resiliency level etc) via hydraAgent. These request are more than hundreds in a seconds. This complete support included multiple challenges of: It is stateless program and challenge was to move it to daemon to improve the performance/memory optimization of the overall system
- 4. This is complete architecture change where XMLRpc are used for client-server communication. A complete cache is implemented whose main purpose is to minimize the communication with BE for every request. Improve the performance in context of reducing overall execution of a request. Remove the memory requirement Handling of new feature in the module whenever a new feature is added in the System. Roles Performed: Involved in all phases of this development i.e. from requirement till testing: Design and Implemented the core framework of state daemon. Design and implemented a testing framework in Python to test it. March 2010-March 2011 Company Headstrong Duration of Project 1 Year Team Size 4 Technologies C++, Perl, Makefile Roles and Responsibilities Code modification for interfacing old library using password and username is source code to use new library using kerberos. Details: There were various legacy trading program in written in perl and C++ that used hard coded user name and password in the source file. These program had to upgrade to use kerbros token base system so that security risk of user and password in source file could be removed: Was reading the source code and find the impact of the changes that new changes could bring. The old make file had to be updated with new makefile and libraries and all broken code had to fixed that occurred due to upgradation of new libraries. Roles Performed: Involved in all phases of this development i.e. from requirement till testing Involved in Requirement gathering. Wrote a bash script that gathered information about the build step using the old makefile and gave new makefile as output with upgraded libraries. Fixing broken system June 2008-November 2009 Company Cadence Design System Duration of Project ~1.5 years Team Size 5 Scale 1,000 LOC (New Feature) Technologies Domain: EDA Language: C++, lisp, QT
- 5. Company Cadence Design System Roles and Responsibilities Involved from requirement till testing Details: Virtuso is one of the most widely used for EDA design and CDL is a circuit simulation tool form cadence. Test case were old with no clean up done in long time. Lot of small improvement were needed but other members had no time for it Had to handle urgent customer bug with very small turnaround time. Roles Performed: Involved in all phases of this development i.e. from requirement till testing: Bug fixing in CDL. Improved Interface for CDL. Added new features in netlist generator for CLD. Made changes in regression test to remove unwanted dependencies. Implementing drag and drop feature in virtuso. Various improvement Virtuso interface. Added support in Virtuso analog library to display thumbnail. ACADEMIC PROJECT Title Fractal Generator Place Milia Institute of technology, Purnea, Bihar Description This project is a mathematical program that generate a picture, iterating a given formula. It takes coefficient constants, initial point and color coding from the user and generate the picture. Platform Windows Tools Visual Studio, MFC. ACADEMIC PROFILE Degree Year College/Board Percentage (%) B.Tech. 2007 Millia Institute of Technology, Purnea 69.6 H.S.C. 2000 C.B.S.E. 72.4 S.S.C 19998 C.B.S.E. 67.8 ACHIEVEMENTS & AWARDS Completed J2EE certification from CETPA Participated in various cultural, technical and social events held at college. Organized events for candle making, book binding, nail and thread, batik and painting
- 6. Participated in annual inter house boxing competition in school EXTRACURRICULAR ACTIVITIES Listening to music, reading, photography, origami, skateboarding, aeromodeling. Playing and watching basketball Writing tit bit application on android and web services. PERSONAL DETAILS Date of Birth: 16th March, 1983 Sex: Male Marital Status: Unmarried Fathers Name: Mr. Devendra Prasad Roy Address: M-97, 2nd Floor, Jagat Ram Park, laxmi Nagar , Delhi 92 PROFESSIONAL REFERENCES Nabila Zaheer Project Lead NECHCLST India Pvt Ltd. Nabila.zaheer@nectechnologies.in +91- 9958096539 Vikas Gera Team Leader Headstrong India Pvt Ltd. geravikas@headstrong.com +91- 9810304475 Alka Goel Senior Engineering Manager Cadence Design Systems alka@cadence.com +91- 9810065096
- 7. Participated in annual inter house boxing competition in school EXTRACURRICULAR ACTIVITIES Listening to music, reading, photography, origami, skateboarding, aeromodeling. Playing and watching basketball Writing tit bit application on android and web services. PERSONAL DETAILS Date of Birth: 16th March, 1983 Sex: Male Marital Status: Unmarried Fathers Name: Mr. Devendra Prasad Roy Address: M-97, 2nd Floor, Jagat Ram Park, laxmi Nagar , Delhi 92 PROFESSIONAL REFERENCES Nabila Zaheer Project Lead NECHCLST India Pvt Ltd. Nabila.zaheer@nectechnologies.in +91- 9958096539 Vikas Gera Team Leader Headstrong India Pvt Ltd. geravikas@headstrong.com +91- 9810304475 Alka Goel Senior Engineering Manager Cadence Design Systems alka@cadence.com +91- 9810065096