Krishna Nuthalapati

* Participated in requirement gathering and analysis phase in documenting the business requirements by conducting meetings with various business users.
* Involved in Business logic implementation, data exchange, XML processing and graphics creation has been done using Python and Django.
* Configured PostgreSQL for high availability and disaster recovery, ensuring maximum uptime for critical applications.
* Migrated a legacy Oracle database to PostgreSQL, resulting in significant cost savings and improved performance.
* Designed and implemented graph algorithms to perform real-time recommendations for users, leveraging GraphQL's advanced traversal features.
* Setup and build AWS Infrastructure various resources, VPC EC2, S3,SNS IAM, EBS, Security Group, Auto Scaling, and RDS in Cloud Formation JSON templates.
* Used GraphQL to model a complex financial network for a banking institution, providing improved risk analysis and fraud detection.
* Implemented MVC architecture using server-side applications, fast Api, for developing web applications.
* Retrieve data from various systems using APIs or by directly accessing the databases. Clean and process the data to make it usable for analysis. Load the processed data into a data warehouse or other data storage system.
* Responsible for configuring a Python REST API framework utilizing Flask and FastAPI, as well as delivering interactive Open API Standard (aka. Swagger) API documentation to other cross-functional teams.
* Automated resulting scripts and workflow using Apache Airflow and shell scripting to ensure daily execution in production.
* Created scripts to read CSV, json and parquet files from S3 buckets in Python and load into AWS S3, DynamoDB and Snowflake.
* ⁠Implemented AWS Lambda functions to run scripts in response to events in Amazon DynamoDB table or S3 bucket or to HTTP requests using Amazon API gateway
* Developed an interactive PowerShell GUI application using Windows Forms and WPF to automate administrative tasks such as user management, log file analysis, and system monitoring.
* Prepared scripts to automate the ingestion process using Python and Scala as needed through various sources such as API AWS S3, Teradata and snowflake.
* Worked on UWP apps can be distributed through the Microsoft Store, providing a centralized platform for users to discover and install applications.
* Written python scripts using python libraries such as pandas, NumPy, Polars, SQL Alchemy, that does read/write operations on large CSV files, perform data aggregations and compare data by columns.
* Worked on Snowflake Schemas and Data Warehousing and processed batch and streaming data load pipeline using Snow Pipe and Matillion from data lake Confidential AWS S3
* Setup Datadog monitoring across different servers and aws services and Integrated cloudcheckr, Datadog, Splunk Dashboard with AWS monitored real-time and historical metrics.
* Created system alerts using various Datadog tools and alerted application teams based on the escalation matrix.
* Packaged and deployed UWP and WinUI apps to the Microsoft Store, ensuring compliance with certification policies and optimizing the app’s performance and security.
* Contributed to the development of DAL customer service chatbot, which utilized asyncio to provide fast and responsive service to customers.
* Deployed microservices to production environments using Docker and Kubernetes on the Franklin Templeton platform, ensuring scalability, high availability, and fault tolerance.
* Worked on Python Open stack API’s used Python scripts to update content in the database and manipulate files.
* Worked on UWP to use XAML (Extensible Application Markup Language) for designing user interfaces, enabling developers to create rich, interactive applications with ease.
* Develop PySpark framework to process JSON data to data files & load them in Redshift.
* Integrated Celery with various brokers like RabbitMQ and Redis to handle high-volume task processing.
Environment: Windows, Python3.7, Angular JS, libraries - (NumPy, SciPy, Pandas, SNMP, PyCharm, PyQuery, Matplotlib), SQL Alchemy, MVC, Linux Suse, HTML5, Scala, Ansible, OAuth 2.0, Google Suite, Slack, OIDC, Kubernetes, Kafka, Shell Scripting, JSON, Apache Web Server, SQL, UNIX.

* Involved in analysis, specification, design, and implementation and testing phases of Software Development Life Cycle (SDLC) and used agile methodology for developing application.
* Participate in requirement gathering and analysis phase of the project in documenting the business requirements by conducting workshops/meetings with various business users.
* Containerized and Deployed the ETL and REST services on AWS ECS through the CI/CD Jenkins pipe.
* Worked on optimizing and memory management of the ETL services.
* Generated Python Django forms to record data of online users and used PyTest for writing test cases.
* Recorded the online users data using Python Django forms and implemented test case using Pytest.
* Designed and deployed machine learning solutions in Python to classify millions of previously unclassified Twitter users into core data product.
* Developed .NET Core-based application, integrating RESTful APIs for data exchange between microservices. Used HttpClient to fetch and post data to external systems, ensuring secure token-based authentication.
* Designed and developed the UI of the website using HTML, XHTML, AJAX, CSS and JavaScript, also used Bootstrap as a mechanism to manage and organize the html page layout.
* Wrote and executed various MYSQL database queries from Python using Python-MySQL connector and MySQL db package.
* Created a full web stack using AWS Infrastructure (Beanstalk, multiple lambdas, Amazon Aurora, API Gateway etc) to create a fully functioning API using GraphQL technology with multiple data sources.
* Worked on deploying Linux SuSE 10, 11 and 12 versions.
* Upgraded from Linux SuSE version 10 to 11 and from 11 to 12.
* Created PowerShell scripts that automate routine maintenance tasks like Windows updates, disk cleanup, and service monitoring. Scheduled tasks through PowerShell and leveraged Azure Automation for cloud-based script execution
* Implemented Okta Single Sign-on Authentication for several applications making using of Python SDKs, SAML and OpenID Connect.
* Used C++/CX to optimize key components of a UWP application, improving computational speed for intensive algorithms. Leveraged C++ where performance was critical, while using C# for general-purpose application logic.
* Implemented new metrics on the MedeAnalytics' Software as a Service (SaaS) Patient Access Analytics platform.
* Hand-on experience in Microsoft Azure cloud platform and merge with python
* Hands on experience in Rest APIs, AWS, Open Shift, Perl, BDDPL/SQL, Amazon Web Services AWS provisioning and good knowledge of AWS services like EC2, S3, Red shift, Glacier, Bamboo, ELB (Load Balancers), RDS, SNS, SWF and EBS etc. and Azure.
* Built a PowerShell solution to automate user account management in Active Directory, including bulk creation, deletion, and modification of user accounts based on input CSV files.
* Build servers using AWS, importing volumes, launching EC2, RDS, creating security groups, auto-scaling, load balancers (ELBs) in the defined virtual private connection.
* Developed views and templates with Python and Django's view controller and templating language to create a user-friendly interface using MVC architecture.
* Leverage .NET's async/await capabilities in Python code, allowing for efficient asynchronous programming patterns.
* Utilized Python Libraries like Boto3, NumPy for AWS. Used Pandas library for statistical Analysis.
* Worked with team of developers on Python applications for RISK management.
* Using Git version control tool to coordinate team-development.
* Worked on several python packages like Matplotlib, Pillow, NumPy, SQL Alchemy, and sockets.
* Implemented AWS high availability using AWS Elastic Load Balancing (ELB), which performed balance across instances.
* Involved in development of Web Services using SOAP for sending and getting data from the external interface in the XML format.
* Responsible for debugging the project monitored on JIRA (Agile).
Environment: Windows, Python3.7, Angular JS, libraries - (NumPy, SciPy, Pandas, SNMP, PyCharm, PyQuery, Matplotlib), SQL Alchemy, MVC, Linux Suse, HTML5, Scala, Ansible, OAuth 2.0, Google Suite, Slack, OIDC, Kubernetes, Kafka, Shell Scripting, JSON, Apache Web Server, SQL, UNIX.

* Developed back-end components using Python 3.7 on Django 1.7 framework and front-end using HTML5, CSS/CSS3, JavaScript to improve responsiveness and performance of Web application.
* Understanding of SQL queries and database management system such as PostgreSQL.
* Worked on application using python integrated IDEs like Eclipse, IntelliJ, Sublime Text and PyCharm.
* Installed data sources like SQL-Server, Cassandra and remote servers using the Docker containers as to provide the integrated testing environment for the ETL applications.
* Worked on combining C++ for high-performance modules with C# for user-facing components in a .NET application. The C++ library was used to process large datasets and calculations, and the results were displayed through a C# front-end application.
* Worked on a project to migrate an existing UWP application to WinUI 3, improving performance, scalability, and integration with the latest Windows APIs. The migration resulted in a 30% improvement in application responsiveness and UI updates.
* Written Ansible Playbooks with Python SSH as the Wrapper to Manage Configurations of Azure Nodes and Test Playbooks on Azure instances using Python SDK and automated various infrastructure activities like continuous deployment, application server setup, stack monitoring using Ansible playbooks.
* Worked on google cloud platform (GCP) services like compute engine, cloud load balancing, cloud storage, cloud SQL, stack driver monitoring and cloud deployment manager.
* Developed numerous new features and enhancements for the Web application using Python/Django, HTML/CSS/JavaScript, as well as automating our development environment using Ansible.
* Worked on optimizing and memory management of the ETL applications developed in Go-Lang and python and also reusing the existing code blocks for better performance.
* Containerized and Deployed the ETL and REST services on AWS ECS through the CI/CD Jenkins pipe.
* Developed dynamic web pages using python Django Frameworks and developed various templates for different customers and saved their user preferences.
* Create Pyspark frame to bring data from DB2 to Amazon S3
* Developed views and templates with Django's MVT (model, view, and template) to create a user-friendly website.
* Microservice architecture development using Python and Docker on an Ubuntu Linux platform using HTTP/REST interfaces with deployment into a multi-node Kubernetes environment.
* Developed web applications and REST full web services and APIs using Python, Django.
* Used Celery with Django to complete asynchronous tasks, like huge report generation, sending mails to respective people.
* Optimize the PySpark jobs to run on Kubernetes Cluster for faster data processing.
* Wrote and executed various PostgreSQL database queries from python using Psycopg2 connector.
* Involved in Agile methodology and scrum process.
* Participated in day-to-day meeting, status meeting, strong reporting and effective communication with project manager and developers.
Environment: Python 3.7, AWS, Devops, Linux Suse, Google Suite / Smartsheets, Slack, OAuth 2.0, OIDC, Ansible, Kubernetes, Django, Django Rest, Flask, React, Redux, Circle CI, Vagrant, Splunk, New Relic Server, GitHub, Ansible, HTML5/CSS, SNMP, PostgreSQL, Amazon Web Service (AWS), S3, EC2, EBS, PyCharm, Microsoft Visual Code, Linux, Shell Scripting, JIRA.

• * Worked as a Python Developer for PPFA to help them complete the process of development and testing for their two most heavily used websites. in a small PPFA team of developers, QA, and engineering resources supporting a total of 30 websites.
  * Implemented new metrics on the MedeAnalytics' Software as a Service (SaaS) Patient Access Analytics platform.
  * Involved in analysis, specification, design, and implementation and testing phases of Software.
  * Developed and deployed Business feature set incorporated with APIs using Django REST Framework and Django Serializes module along with Java Technologies for the back end and UI development with angular
  * Developed modules for contact management including Database design, Back-end development and used Django Migrations for designing and expanding of the database.
  * Development of new IPTV/IP Video SaaS lines of business for major satellite operators (Intelsat, SES); Enterprise
  * Hands on experience in migrating Business from a physical data center environment to AWS.
  * Successfully migrated the Django database from SQLite to MySQL to PostgreSQL with complete data integrity.
  * Working as an application developer experienced with Perl, BDD, PL/SQL, controllers, views and models in Django and Linux Shell Scripting – Bash and Python scripting.
  * Restful web services using Python REST API Framework.
  * Implemented the application using Python Spring IOC (Inversion of Control), Django Framework and handled the security using Python Spring Security.
  * Tested entire frontend and backend modules using Python on Django Web Framework.
  * Used object-relational mapping (ORM) solution, technique of mapping data representation from MVC model to Oracle Relational data model with an SQL-based schema.
  * Developed and Deployed SOAP based Web Services on Tomcat Server
  * Used Jenkins for continuous integration for code quality inspection and worked on building local repository mirror and source code management using Git hub.
  * Used IDE tool to develop the application and JIRA for bug and issue tracking.
  * Wrote unit testing codes using unit test, resolving bugs and other defects using Firebug,
  * Used GIT to coordinate team development.
  Environment: Python/SQL Django Web Framework, C++, SNMP, AWS, OAuth 2.0, OIDC, HTML, CSS, NoSQL, JavaScript, JQuery, Sublime Text, Jira, GIT, PyBuilder, unit test, Ansible, Kubernetes, Google Suite / Smartsheets, Slack Firebug, Web Services.

• Developed and maintained Python applications to automate banking processes and improve efficiency.
• Collaborated with cross-functional teams to design scalable software solutions for financial services.
• Implemented RESTful APIs to enhance system integration and data exchange between applications.
• Conducted code reviews and provided constructive feedback to ensure adherence to best practices.
• Assisted in troubleshooting production issues, ensuring minimal downtime for critical banking applications.
• Mentored junior developers, fostering a collaborative environment and promoting knowledge sharing.
• Collaborated with cross-functional teams to design, develop, and implement high-quality Python applications.
• Implemented API integration for seamless communication between different software components within the organization''s ecosystem.
• Supported business objectives by developing custom reporting tools using Python libraries like Pandas and Matplotlib.
• Optimized database queries for improved performance, reducing response times significantly in key areas of the application.
• Developed views and templates with Python and Django's view controller and templating language to create a user-friendly website interface.
• Environment: Python, Django 1.3, MySQL, Linux, HTML, XHTML, SVN, CSS, AJAX, Bugzilla, JavaScript, Apache Web Server, Django