SUMMARY:

• Having 14+ years of programming experience, till date hands on coding with Python, C++, C in Unix and Linux environments, Expertise across variety of frameworks and technologies
• Demonstrated strong experience in OOAD thru Agile development methodology
• Involved in complete SDLC from Requirement Analysis till Post Production Support
• Worked across various domains including GIS, ETL, Cloud Computing, Financial, Security, POS, Retail and Fraud/Risk
• Possesses good Linux/UNIX/AIX administration skills
• A good leader with extensive background managing experience in handling offshore and onsite teams
• Analysis and understanding of undocumented software systems thru reverse engineering. Requirements definition, functional specifications and gap analysis. Implementing Products/Applications end to end
• Technical/Architectural Designing (High and low level). Writing Functional Specification & Technical Design Documents.
• A Multinational Manager who handled medium and large - scale rapidly evolving projects including project members from different geo locations.
• Defining and documenting the project management plan, including scope management, schedule management, cost management, quality management, staffing management, communications management, risk management and developing the milestone list, resource calendar, schedule baseline, cost baseline, quality baseline, and risk register.
• Analyzing customer business needs and converting to opportunities. Managing project initiation, including defining and documenting the Project Charter, developing the preliminary project scope statement and high-level description of costs/benefits.
• Key person for implementing quality process and recommend best practices for PMO.
• Effective communication skills and record for coordination between globally located teams.
• Project delivery under stringent timelines and high pressure.
• Defining Business Process; identifying risk, doing risk analysis and providing baseline acceptance criteria and deliverables.
• Thorough understanding of Software Development Life Cycle (SDLC), involved in various phases like Requirements, Analysis/Design, Development and Testing.
• Rich experience in translating Business requirements to IT systems requirements including gap analysis.

TECHNICAL SKILLS:

Languages(Primary): Python, C, C++, Pro *C

Languages(Secondary): PHP, Scala

Data Interchange/Meta Data: Protobuf, AVRO, JSON, XML, Encrypted XML

Artifactory: JFrog

Distributed Storage & Processing: Hadoop, Hive, Spark

Distributed Transaction Processing: Tuxedo

Web Frameworks: Django

Asynchronous Task Processing: Celery

Search Servers: Elastic Search

RPC: ReST, XML-RPC, Web Services

Message Brokers: Rabbit MQ

Continuous Integration: Jenkins

Virtualization: Virtual Box, VMware Player

Unittest Frameworks: Python unittest, py.test

C/C++ Compiler Variants: Legacy CC, gcc, IBM XL C family

C/C++ Cross Compilers: Pro *C

Debuggers: pdb, ipython, gdb, dbxProfilers: valgrind, purify

External C++ Libraries: Boost, Rogue Wave, C-ISAM

Shell Scripting: Bash, KSH

Authentication: SAML

Databases: Oracle, Teradata, PostgreSQL, MySQL, Informix.

Operating Systems: Mac OS, Linux - Fedora Core, SuSE, RHEL, Mandriva, Ubuntu

UNIX: SCO, IBM-AIX, HP-UX, Sun Solaris IBM-OS/2

Web Development: HTML, Java Script

Version Control: GIT, Git hub, SubVersion, Perforce, IBM Clear Case

Development Tools: VIM, PyCharm, Code Blocks, Komodo Edit, Eclipse

PPM: Clarity

Collaboration: Confluence, SocialText, Twiki

Defect Tracking/Ticketing: ETrack, Clear Quest, JIRA, Radar, Espresso, HP-QC

PROFESSIONAL EXPERIENCE:

Confidential, Sunnyvale

Environment: Python, Hadoop, Elastic Search, Jenkins, JFrog, Protobuf, AVRO, JSON, Oracle, Informatica ETL, TeraData, Business Intelligence Objects, Design Patterns, AIX, Mac OS, Red-hat Linux, Virtual Box, Sub Version, GIT, Radar, Confluence, Celery, RESTful APIs, AD-IDP, SAML-ADFS, PyCharm, Virtual Env, vagrant, F5 Load Balancer, MySQL, Perforce, Wiki, ETrack, JIRA, D3JS, Templating, memcahed, SNMP, EXT JS, Pylons, JIRA, confluence, Clarity, WBS, C++, OCCI, Oracle, Shell Scripts, Clear Case, Clear Quest, Clarity, PostgreSQL, XML-RPC, SOA(service oriented Architecture), WSGI applications with Apache(HTTPS, SSL Termination), Apple IOS push notifications, code signing certificates, provisioning profiles, Google Cloud Messaging

Responsibilities:

• Developing massive data pipelines with Big Data(hadoop) as backend, supported with drake(as make) and automated using Gradle and Jenkins.
• Done real time maps data mapping, handled 3rd party (TomTom, Open Street Maps, iPC) GIS data
• Data pipeline stage setup, builds, releases and data set versioning
• Worked on GIS data handling - filtering, curation, conflation & presentation
• Designed & Developed high performing rules engine with Machine Learning algorithm capable of intelligent parsing thru different Teradata control files
• Designed & Developed SQL Engine capable of generating Complex SQL queries from Simple JSON inputs
• Enhanced sorting algorithms for comparing huge chunks of ETL data sets to present diff sets
• Designed & Developed SQL Parser capable of compiling large SQL files in to template SQL structures and list SQL operation statics
• This framework has achieved high performance improvement in Apple’s ELT Team’s Testing Strategy
• Achieved increasing security level of server interfaces with SSO and encrypted SAML ADFS authentication.
• Improved server performance to 40% on Asynchronous task processing modules by migrating from Daemons to Celery
• Improved Celery caching mechanism efficiency to 60% by replacing DBQUEUEs with RabbitMQ
• Developed optimized templating engine capable of rendering multiple tree datastructure
• Boosted up the initial application loading with 500 ms increase on initial loading, by performance tuning the source code
• Achieved resolving customer issue to one of our biggest client with in 2 hours and got appreciated well, What I did is something very individual few software engineers can do
• Developed ACH risk monitoring system to monitor PayPal’s ACH Fraud Model
• Gathered good understanding on Risk modeling thru Transaction Pre Processing, Processing and Post processing
• Submitted Architectural Enhancement proposals for the scalability and current bottlenecks
• Involved starting from RFP, delivered Technical Response for RFP, Project planning, Estimation, Resource Allocation, Technical Design Document, Execution, Testing, QE Support, Delivery and Signoff
• Direct Customer Interaction, addressing customer issues/user stories, delivering hot fixes directly to the customers
• Prepared and presented Technical Proposal for Application technology stack upgrade (Python 2.1 -> 2.5, Pylons, PSE, ExtJS -> Django..) showing very significant improvement in Architecture Scalability
• Designed and proposed Complete Application wide CORE Re-Architecture
• Prepared performance/issue reports for the CORE product and suggested for improvements/enhancements
• Managed the entire product team(12 members) including testing and development.

Confidential

Technical Leader

Environment: C, Pro* C, Shell Script, C#.net, Oracle 9, HP-UX, SVN, HP-QC, WBS

Responsibilities:

• Designed Architecture Enhancement proposal and got approved by Onsite Renault Architect
• Developed Main module of the Application with below functionalities,
• Creation of Loading plan towards different transport channels
• Simulation of Loading plan towards different transport channels
• Performance Calculation
• Enhanced Volume Modular to Calculate and volumize the Loading requirements for any given truck of various sizes
• Developed Trip Plan Generator that prepares and validates the transport layout for freight container trucks

Confidential

Development Lead

Environment: C++, Python, OCCI, Oracle, Shell Scripts, RedHat Enterprise Linux 6.2, Clear Case, Clear Quest, Clarity & WBS, Intranet wiki pages (twiki)

Responsibilities:

• Integrated GE Money Bank with PayPal thru Buyer Credit platform. Involved rules engine enhancement for targeting the users with appropriate offers. Implemented this product for USA, UK and France by leveraging MPI server
• Worked for PayPal BML(Bill Me Later) integration towards Marketing Technology. Developed MPI server enhancement modules to target Acquisition and Promotional offers for BML customers
• Involved in Development of robust, scalable Payout Fulfillment Server(PFS) built for cash back fulfillment and other types of fulfillment (such as changing pricing tiers or updating the database to enable product adoption promotions). This is a replacement for PayPal’s legacy pay back approach through eBay coupons/Cash Rewards.
• Developed Batch and PFS reversal daemon, which leverages the PFS server to have Reversals functionality to reverse wrong payout incentives
• Developed Geo Targeting Engine to target offers based on the users geographical location from where he is hitting PayPal, this replaced the legacy offer targeting based on FQDN(.com, .au, .fr, .de)
• Worked for MPI CS server development to support PayPal customer service to target marketing offers over the call. Involved developing In-memory data structures, Role Based Access controls.
• Worked as Senior developer on all major applications of PayPal’s Marketing Technology team
• Received PAT(PayPal Appreciates Talent) award 4 times

Confidential

Senior Software Engineer

Environment: C, C++, CISAM, RogueWave Libraries, Informix, Shell Scripts, SCO UNIX S5R3, AIX 4.2, SuSE Enterprise Linux 9, OS/2, WBS, Internal Defect Tracker.

Responsibilities:

• Worked as a only engineer on C,C++,UNIX platform with no assistance in a Windows/.NET platform reliant service company. Hence being handled all aspects of the application solely including Administration of SCO-UNIX, AIX(RISC Power PC) servers with 100% no guidance.
• Have ported the entire application source code to SuSE Enterprise server 9 from SCO UNIX 5.0.3 as single member
• Administrated Legacy SCO-UNIX S5R3 and AIX4.2(Power PC 6000), Linux servers with no assistance
• Enhanced Indexed Sequential Access modules(CISAM) for database interactions and UI modules written in OS/2.Ported them to UNIX using rc aix compiler
• Developed Report Generation Application, Refactored the entire application, Done Performance tuning for DB Chunk handlers
• Completely wiped out memory violation problems due to improper record pointers and unwanted values, Like wise…from the App
• Heavily used Rogue Wave libraries for Data structure Handling, File manipulations and Date time functionalities

Confidential

Software Engineer

Environment: (LAMP) LINUX, Apache, MySQL, PHP, HTML, JAVA Script

Responsibilities:

• Worked as web developer in LAMP platform
• Done hands on coding in PHP
• Involved in DB design, testing and bug fixing