Sailesh V. Email & Phone Number

Baltimore, Md

• Analyzed SQL and SAS scripts, devising solutions implemented with Pandas and PySpark for enhanced data processing.• Crafted web pages featuring QC Reports utilizing HTML, CSS, JavaScript, and jQuery. • Created a Python package to facilitate Teradata-Spark connectivity, generating QC Reports and operating on high-configuration EMR clusters. • Architected web applications with Python and Django, championing Agile practices and resolving data load issues collaboratively. • Expanded database connectivity in Python and Spark to platforms like ORE, Snowflake, Redshift, and Teradata. • Migrated legacy Teradata SQL queries to Amazon Snowflake as part of a comprehensive database transition. • Strategically analyzed business requirements, leading to system migration using advanced technologies like Python, Spark, and AWS.• Crafted end-to-end web applications, integrating Python, Django, and MySQL, while optimizing data management with efficient queries.• Integrated Amazon AWS S3 and RDS support, elevating hosting capabilities for static/media files and databases.• Fine-tuned code for performance and consistency, ensuring optimal application functionality. • Designed and executed frontend and backend modules using Django Web Framework, working in collaboration via GitHub.• Expertly handled debugging, troubleshooting, and continuous improvement of the web application.Environment: Python 2.7, SQL, Spark 2.1.0, Snowflake, Amazon S3, Elastic Map Reduce, Django 1.9, Java Script, HTML, XHTML, jQuery, JSON, XML, CSS, MySQL, Bootstrap, Git, Linux.

New York, United States

• Engineered a suite of 6 micro services that facilitate seamless conversion of input files into machine-readable formats and routing through distinct payment channels. The architecture, a complete micro services system in Python, harnesses Kafka's distributed message passing using JSON for data exchange.• Spearheaded the creation of a versatile dashboard control panel for both customers and administrators. Leveraged Django, HTML, CSS, Bootstrap, JavaScript, jQuery, and RESTAPI calls. Implemented full-page caching via Varnish to manage high traffic, complemented by Nginx as a reverse proxy.• Played a pivotal role in web portal development, including PostgreSQL database modelling, HTML/CSS-based front-end support, and JavaScript-powered features. Expertly debugged applications, deciphering log file messages to identify and resolve errors.• Demonstrated prowess in database management using Python, crafting RESTful APIs with Flask, SQL Alchemy, and PostgreSQL. Conducted performance analysis through transaction breakdowns, network monitoring, and resource assessment to uncover bottlenecks.• Undertook the challenge of migrating legacy backend software to Python with minimal disruption, collaborating closely with project leads to understand Azure services, deployment, and tool integration.• Leveraged GitHub for version control, excelling in UNIX environments. Skilfully composed intricate SQL queries to validate data based on ETL mapping specifications, optimizing system performance and orchestrating complete API lifecycles.• Demonstrated proficiency in Java frameworks encompassing Spring and Hibernate, and skilfully contributed to the development of monitoring applications capturing error data for database storage.Environment: Python, Drop wizard, Spring Boot, Lagom, Kafka, JSON, GitHub, LINUX, Django, Flask, Varnish, Nginx SOA, RESTful

San Jose, California, United States

•Developed RESTful APIs and micro services based on specific client requirements, utilizing Django Rest Framework and Nameko framework to ensure efficient communication and functionality.•Successfully optimized application performance by implementing Distributed Caching with Redis. Reduced application latency significantly from 4.5 seconds to 1.75 seconds, enhancing user experience and responsiveness.•Created engaging and responsive front-end user interfaces using the React JS framework, delivering intuitive and interactive web applications that meet user expectations.•Managed data modeling complexities by writing data migrations through Django Migrations. Ensured seamless data transitions while accommodating evolving requirements.• Employed Higher Order Components in React JS to address diverse and specific project requirements, enhancing code modularity and maintainability.•Utilized Celery for the implementation of PDF generation tasks, streamlining asynchronous processing and enhancing overall system efficiency.•Prioritized software quality through Test Driven Development (TDD), performing comprehensive unit tests and regression testing using tools like the Nose module. Ensured the reliability and stability of Django RESTful APIs.• Demonstrated expertise in deep learning by developing and training a Deep Neural Network Model. The model accurately classified 3D printed defect parts based on captured images, contributing to quality control processes.•Designed and implemented a Convolutional Neural Network Model for image classification, leveraging logistic regression algorithms within individual neurons to achieve precise classification outcomes.Environment:Python3.x,ReactJs,Postgresql,GitLab,Html,CSS,Javascript,DeepLearning,Keras,TensorfFlow,Pandas, NumPy, Convolutional Neural Networks, Recurrent Neural Networks.

India

• Strategically design and meticulously implement comprehensive Extract, Transform, Load (ETL) processes, effectively harmonizing diverse data sources into a consistent and unified format.• Spearhead the development of Python scripts with automation prowess, streamlining the transformation and loading of data. This diligent approach guarantees data accuracy and uniformity throughout the process.• Foster seamless collaboration across cross-functional teams, adeptly addressing intricate technical dilemmas encompassing data analysis, reporting, and the seamless transition of operations to the cloud environment.• Assume a pivotal role as a technical mentor, providing unwavering support and expert guidance to team members. This includes actively contributing to the resolution of intricate technical hurdles, fostering a dynamic and innovative team environment.• Engineer optimal utilization of AWS resources through the implementation of cost-effective strategies. This is crucial in ensuring the judicious application of cloud services, thereby minimizing operational expenses and maximizing value.• Display a vigilant eye over cloud infrastructure, continuously monitoring and judiciously scaling resources in response to burgeoning data analysis requirements. This proactive stance ensures unhindered scalability in tandem with evolving business needs.• Skilfully identify and meticulously address performance bottlenecks entrenched within SQL Server and Oracle databases. Through astute query optimization, index refinement, and database structure enhancement, these efforts augment data retrieval speed and system responsiveness.Environment: AWS (EC2, S3, Redshift & CFT), R, SQL Server, Oracle, Spark, Python, Oracle Java, XML&CSV files.

Hyderabad, Telangana, India

• Developed Python based API (RESTful Web Service) to track the events and perform analysis using Django.• Developed and implemented the MVC Architectural Pattern using Struts Framework including JSP, Servlets and Action classes.• Embraced an agile development methodology to deliver iterative and incremental enhancements to the software.• Supported/maintained client website within the DJANGO CMS system for various website needs pperformed dynamic UI designing with HTML5, CSS3, less, Bootstraps, JavaScript, JQuery, JSON and AJAX.• Embedded AJAX in UI to update small portions of the web page avoiding the need to reload the entire page.• Used jQuery for all client-side data manipulation.• Implemented data analysis with various analytical tools such as Python / SQL, Pandas, NumPy, Matplotlib, Jupiter Notebook, and Anaconda.• Worked on data queries to obtain lists of references from online databases for analysis.• Used Perl in web automation and in developing web chat box for the customers.• Used Test driven approach for developing the application and Implemented the unit tests using Python Unit test framework.• Collaborated with teams outside of development, including database administrators and data analysts, to ensure smooth data extraction, transformation, and loading processes.• Utilized analytical tools to uncover patterns, trends, and correlations within datasets, contributing to informed decision-making processes.• Provided technical support for the development, maintenance, and improvement of the web chat box feature, enhancing customer interactions.Environment: Python, Django, Django-cms, SSO, database access, Bootstrap, JavaScript, HTML5, CSS3, Agile, MAVEN