Software Engineer Senior

SUMMARY

Over ** years of turning "impossible" into "done"! Started coding at 2012, and now as a senior level, I architect solutions that make businesses go "Wow!"

As an innovative software engineer, my passion lies in crafting impactful solutions that empower businesses to thrive. With a strong foundation in Python, I have led and contributed to enterprise-level projects, delivering tangible results that streamline processes and boost efficiency.

My expertise extends beyond technical proficiency to encompass effective communication, problem-solving, and a collaborative spirit.

I'm committed to continuously refining my skills and leveraging proven architectural principles to design robust backend logic and data models.

I am now excited to bring my experience and dedication to a challenging project where I can contribute my talents and deliver optimal solutions to drive success.

SKILLS

Programming Language: Python, Typescript, Javascript, C#, Java Framework: Django, Panda, Flask, React

Library: Numpy, TensorFlow, NLTK, Scikit-learn, Scipy Cloud Service: Microsoft Azure, AWS (Lambda, S3, Dynamo DB, EC2), GCP Monitoring: ELK Stack, Micrometer, Prometheus, Grafana Database: MSSQL, PostgreSQL, MongoDB, Amazon DynamoDB, Redis, Cassandra CI/CD: Azure DevOps, Jenkins

Version Control: Git, TFS, GitOps pipelines

Infrastructure: Docker, Kubernetes

DevOps: AWS RDS PostgreSQL, AWS Aurora

Message Stream: RabbitMQ, Apache Kafka

Web Techs: Microservices, RESTful API, OAuth 2, SAML, Active Directory, ElasticSearch, Selenium Clay Ullrich

Senior Software Engineer

+1-443-***-**** • *************@*****.*** • in/clay-ullrich-a818ab334 • Webster, TX EXPERIENCE

Sr. Software Engineer, Grinteq Mar 2020 – Apr 2024 Responsibilities:

Rebuilt a full website from scratch using Django-CMS. The old website was built on Pelican, therefore Django- CMS brought more interactivity and made it possible to create and edit content more easily and visually.

Maintained, improved, and deployed Python-based in-house projects regarding security operations (SIEM, automated code review, and mobile app testing).

Designed the architecture of a vulnerability management system involving all the company networks.

Handled several security operation tasks including secure code reviews, security alert handling, network/system/mobile app auditing, among others.

Built with a team a dashboard for lawyers; based on Django and Solr.

Developed automated mechanisms to take granular snapshots of specific databases in an RDS instance, using AWS Lambda and Step Functions to trigger backups based on schedules or events. this workflow ensured point-in- time recoverability and reduced downtime during restores.

Administered Alpine and CentOS Linux derivatives for server environments, ensuring secure and reliable system operation.

Developed custom scripts for system monitoring and maintenance, automating routine tasks.

Spearheaded the integration of third-party systems and APIs, collaborating with external partners to seamlessly incorporate their services into our applications. This led to increased functionality and improved user experiences.

Developed parts of a bulk action tool which supports various DB objects actions for lists which contain hundreds of thousands of items.

Created a Google Chrome extension to download recently implemented HLS livestream support for employees and anti-evil team folks.

Actively utilized distributed data systems, including RabbitMQ for message queuing and Elasticsearch for real-time data indexing and querying. Designed and maintained the RabbitMQ infrastructure, enhancing message processing capabilities and ensuring system scalability.

Worked on internal tools which use Zendesk and Jira integration for processing users' feedback requests and reports.

Developed a flexible and automatic billing system in Python for online marketeers. It interfaced with bookkeeping systems and online marketing platforms like AdWords.

Built an ecologically inspired social web application using Python, Flask, and React.

Contributed to the development of Node.js-based backend services, React-based front-end applications, and data analysis using Jupyter Notebook, enriching our technology stack and enabling versatile solutions.

Orchestrated the creation of Amazon EMR templates for infrastructure as code (IaC) deployments, reducing manual intervention and ensuring consistency.

Implemented and managed AWS Elastic Beanstalk for containerized application deployments, reducing deployment times by 15%.

Designed and maintained AWS Virtual Private Clouds (VPCs) to establish secure and isolated network environments for client projects.

Built a proof-of-concept neural network for license plate recognition using Python and Keras. Technologies: Django, Solr, RabbitMQ, Keras, Node.js, Python3, ElasticSearch, Pandas, GCP, Apache Spark, Tableau, Amazon EMR, React, Zendesk, SQL, OAuth, Docker, Kubernetes, Agile, React Senior Software Engineer, Codebay Jan 2018 – Feb 2020 Responsibilities:

Worked in comprehending and examining the client's business requirements.

Used Django frameworks and Python to build dynamic webpages.

Developed tools for monitoring and notification using Python.

Enhanced the application by using HTML and Java script for design and development.

Used data structures like directories, tuples, object oriented class based inheritance features for making complex algorithms of networks.

Created PHP/MySQL back-end for data entry from Flash and worked in tandem with the Flash developer to obtain the correct data through query string

Involved in designing database Model, API's, Views using python to build an interactive web based solution.

Generated Python Django Forms to record data of online users.

Implemented Data tables to add, delete, update and display patient records and policy information using PyQt.

Implemented a module to connect and view the status of an Apache Cassandra instance using python.

Developed MVC prototype replacement of current product with Django.

Improved the Data Security and generated report efficiently by caching and reusing data.

Created UI using JavaScript and HTML5/CSS3.

Managed datasets using Panda data frames and MYSQL. Queried the database queries using Python-MySQL connector and retrieved information using MySQL.

Recorded the online users' data using Python Django forms and implemented test case using Pytest.

Developed the application using the Test-Driven methodology and designed the unit tests using Python Unit test framework.

Conducted Azure architectural assessments and developed migration strategies for transitioning workloads to Azure.

Worked closely with clients to define Azure resource governance and management practices, ensuring efficient resource utilization.

Collaborated with Azure DevOps teams to automate infrastructure provisioning and configuration using Infrastructure as Code (IaC) principles.

Designed disaster recovery and business continuity solutions leveraging Azure Site Recovery and Azure Backup services.

Architected, implemented, and maintained Azure-based infrastructure solutions for clients, ensuring high availability and scalability.

Designed and managed Azure Virtual Networks (VNets) to establish secure and isolated network environments for client projects.

Implemented Azure Security Center policies and monitored security alerts, enhancing the overall security posture of Azure environments.

Collaborated with development teams to optimize Azure App Services and SQL Databases for performance and cost-efficiency.

Provided Azure training and knowledge sharing sessions for internal teams and clients to facilitate Azure adoption and best practices.

Acted as a subject matter expert (SME) on Azure-related technical matters, providing guidance and mentorship to junior staff members.

Created web application prototype using jQuery and Angular JS.

Deployed the project into Heroku using Git version control system,

Maintained and Updated the application in accordance to the clientele's requirement Technologies: Python3, Django, JSON, PostgreSQL, Git, Linux, Jira, Shell Scripting, Swagger, Heroku, Perl, REST, Scipy, Matplotlib, Qlik sense, Selenium, PyLint, pdb, Hadoop, Docker, React, Azure Software Engineer, VironIT Apr 2014 – Nov 2017

Responsibilities:

Architected and implemented user interface widget API, with Python bindings.

Created standalone app for viewing 3D models, including file type integration with macOS and Linux.

Created a visualizer app for easily visualizing point clouds, triangle meshes, and lines, as well as complex scene settings, animations, the ability to select points graphically, and the ability to easily add custom processing actions.

Handled details of macOS, Linux, and Windows integrations, including windowing system differences, file type integrations, macOS-specific threading issues.

Submitted several PRs to upstream library google/filament to fix macOS rendering and threading.

Designed and developed Django REST Services with ORM models along with templates.

Implemented Business logic, data exchange, and XML processing and graph creation using Python.

Designed and Developed Oracle Stored Procedures and UNIX Shell Scripts for Data Import/Export and Conversions.

Developed views and templates with Python and Django's view controller and templating language to created user- friendly website interface.

Created unit test/regression test framework and scripts for testing various modules.

Extensively used Python requests urllib and urllib2 module to call web services.

Used NumPy for numerical analysis & matplotlib libraries part of sci-py kit to do data analysis and plotting.

Designed, developed, implemented, and maintained solutions for using Docker, Jenkins, GIT, Puppet for micro services and continuous deployment.

Expertise python scripting with focus on DevOps tools, CI/CD and AWS Cloud Architecture.

A Django dashboard with custom look and feel for end user has been created after a careful study of the Django admin site and dashboard.

Developing software in Python, C# and web development frameworks such as Flask

Developed test scripts in Python that are used to test embedded systems via their debug UART port.

Used SOAP and Restful API for information extraction.

Developed Views and Templates with Python and to create a user-friendly website interface Django's view controller and template.

Implemented AWS security best practices, including AWS Identity and Access Management (IAM) policies and AWS Security Groups.

Collaborated with development teams to optimize AWS Lambda functions, Amazon RDS databases, and EC2 instances for performance and cost-efficiency.

Designed and developed data management system using NoSQL, Mongo DB, and MySQL.

Used Unit Test library for testing python and other programs.

Developed Network modules, Socket programming and Web server hosting capabilities of Python for some applications (ex. IoT devices).

Technologies: Python3, Ubuntu, Jira, Shell Scripting, Perl, Heroku, REST, Scipy, Matplotlib, Selenium, PyLint, C#, MongoDB, Jenkin, Kubernetes, TFS, React

Project Intern, Innowise May 2013 – Mar 2014

Responsibilities:

Wrote Automation test cases using Selenium WebDriver using Python API.

Installed Veritas Cluster Server on Solaris, with Oracle agent.

Used Python scripts to update content in the database and manipulate files.

Generated Python Django Forms to record data of online users

Used Python and Django creating graphics, XML processing, data exchange and business logic implementation

Used Pandas API to put the data as time series and tabular format for east timestamp data manipulation and retrieval.

Used Flask to connect front-end to back-end, Cherrypy to build the server and word clouds to visualize movies.

Used latest Video Conference Applications and worked extensively on them.

Data mapping, logical data modeling, created class diagrams and ER diagrams and used SQL queries to filter data within the Oracle database.

Performed daily administration functions, including database management, monitoring, performance tuning, backup

& recovery and also general troubleshooting on multiple UNIX platforms and Windows Servers.

Added support for Amazon AWS S3 and RDS to host static/media files and the database into Amazon Cloud.

Developed tools using Python, Shell scripting, XML to automate some of the menial tasks.

Used HTML, CSS, JQuery, JSON and JavaScript for front end applications.

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.

Used Django configuration to manage URLs and application parameters.

Built various graphs for business decision making using Python matplotlib library.

Wrote and executed various MYSQL database queries from Python using Python-MySQL connector and MySQL dB package. Worked with PIP in managing software packages written in Python.

Involved in development of Web Services using SOAP for sending and getting data from the external interface in the XML format.

Manage, collaborate, and coordinate the work of an offshore development team.

Worked on rebranding the existing web pages to clients per the type of deployment.

Worked on updating the existing clip board to have the new features as per the client requirements. Technologies: Python3, JSON, Shell Scripting, Perl, Swagger, Heroku, REST, Docker, Cherrypy, Oracle, AWS, XHTML, Pandas, Selenium

EDUCATION

Bachelor Degree of Computer Science at Boston University Sep 2009 – Apr 2013

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