Mark Engstrom Email & Phone Number

Ramstein-Miesenbach, Rp, De

Eden Prairie , Mn, Us

- Led, mentored, and developed a team of software engineers, while fostering a collaborative and innovative environment.- Conducted performance reviews, set goals, and created development plans for team members.- Directed data center migration projects, ensuring smooth transitions and minimal downtime.- Provided technical guidance and support, reviewing and approving code, design documents, and architectural decisions.- Ensured adherence to best practices in software development, including coding standards, testing, and documentation.- Delivered root cause analysis reports during rare outages and implemented corrective actions.- Mitigated security vulnerabilities identified in Checkmarx reports and resolved issues related to WAF security profiles.- Implemented application service account password security using HashiCorp Vault API key/value store and secrets engine.- Migrated source code management from BitBucket to GitHub Cloud Enterprise (GHEC).- Assisted in testing the migration from Symantec to TrendMicro Solution Platform.- Led efforts to port legacy Python 2.7 application code to Python 3.12.- Spearheaded the migration of the AuditPoint web application's authentication method to One HealthCare ID / MSID using OpenID Connect.- Coordinated and led a disaster recovery simulation for AuditPoint web applications, collaborating with network teams (F5, Palo Alto, Bluecoat appliances) and establishing a remote Kubernetes recovery cluster.*Skills Used:* Team Leadership, Project Managment, Technical Oversight, Resource Managment, Process Improvement, Stakeholder Communication, Risk Management, Strategic Planning, Conflict Resolution, Azure, HashiCorp Vault API, Python 3.12, Django, Django DRF, HTML, CSS, JSON, REST, XML, JavaScript, Git, OAuth2, JWT, RabbitMQ

Eden Prairie , Mn, Us

I currently work remotely from Sumter, SC. Optum is a Health Services platform of UnitedHealth Group. We offer information and technology-enabled health services. Optum is a growing technology-enabled, data-driven solutions company that ensures payment integrity across the healthcare, property and casualty industries. Developed Python applications and RESTful web services using Django, Django Rest Framework, RabbitMQ, and PikaManaged projects and code using Confluence, JIRA, and BitBucket (Git) Created Docker testing and development environments by creating containers using dockerfiles, Docker-compose, Python and bash scripting. Developed unit tests for existing and new code using the Pytest framework.Created Docker testing and development environments by creating containers using dockerfiles, Docker-compose, Python and bash scriptingManipulated and formatted large data sets using Python’s Pandas library (with MySQL databases) and SQLAlchemyRe-factored existing code to be more modular

Newark, Ca, Us

I provided automation and ticketing applications for 3D-Xray scanners deployed around the globe.Developed Python applications using Python libraries like SQLAlchemy, Pandas, Python-daemon, pySNMP, numpy, watchdog, etc. to parse log / diagnostic sensor data that create trouble tickets for scanners at airports.Assisted development of costumer facing Ruby on Rails web application.Created Docker images / containers for smooth application deployment whilefollowing the agile software development methodology. Configured secure OpenVPN with 4096 Bit X509 public key certificate encryption for remote access to critical servers.Configured OpenVPN within docker container that runs as a service under systemd. Managed source code with Git repositories.Assisted with server configuration (CENTOS, PostgreSQL, Unicorn, Ruby/Rails, NGINX).Configured PostgreSQL database server replication clusters.

Hanover, Md, Us

Developed custom user interfaces using the Django Content Management System administration tool to facilitate the management of a financial institutions websites.Continued development and implemented the user registration and login feature for loan application processes.Securely redesigned network and deployment procedures for test, QA and production servers using a combination of Gitlab web hooks, Git hooks, and the Python Fabric library.Used RESTful web service calls for the valuations provided by NADA, an online portal for the pricing and information of Boats and RV's.Utilized South for schema and data migration for the PostgreSQL database.Composed Django unit tests for every application to aid in code changes and debugging.Utilized Django’s Object Relational Mapping by creating Django models representing loan application data relating to objects representing a borrower’s name, address, collateral, vehicles, credit score tiers, etc. Developed user-friendly modals for form submissions using custom JavaScript, jQuery, jQuery-UI and AJAX. Developed an web service API to provide rate quotes to Lending Tree customers.Worked with product owners, project managers, customer service reps and vendors to satisfy all the business needs.Utilized middleware, such as Django-Debug-Toolbar , along with custom template tags and filters. Maintained website rich user interface and user experience (UI/UX) using HTML, XHTML, AJAX, CSS and JavaScript running on NGINX, UWSGI, PostgreSQL and RHEL 7.Implemented a solution using rsync for nearly real-time Django caching of static files (CSS, Images, Javascript, etc) across load-balanced web servers.Resolved and tracked software issues using Gitlab (an OpenSource Git Implementation similar to Github but hosted locally)Setup Splunk log queries of indexes to find the root cause of complex online loan application issues.

Sacramento, California, Us

- Developing paperless automated solutions for process workflows using C#, HTML, ASP.NET, JavaScript, JQuery, CSS, Visual Studio 2013, unit testing, Microsoft SharePoint, SharePoint Provider-Hosted Apps, K2 blackpearl, InfoPath, Adobe LiveCycle Enterprise products, Microsoft .NET Windows Communication Foundation WCF web services which implement Document Signing with CAC EDIPI- Testing, configuring and deploying third-party commercial off the shelf solutions which save in-house development time when possible

Cranberry Township, Pa, Us

Develop Tenable / Nessus security compliance checks for audit files that match DISA STIG requirementsDevelop reporting applications using a combination of C#, Python, Django, Microsoft SQL Server, and XML

Arlington, Va, Us

Scripted configuration policy settings and maintenance solutions with PowerShell, VBS, and PythonMaintained a Multi-Level-Security access system(MLS) in a high tempo military environmentMonitored production environments, the application of patches, and software updatesBuilt out new Citrix Remote Desktop Terminal Server Solutions

Develop and maintain finance / property management tools using Oracle, ASP .NET, Crystal Reports and Share Point

Stamford, Ct, Us

Develop and maintain applications and procedures;Design software system architecture and integration;Contribute to documentation, training materials, and training users and user support groups;Database Administration;Install, configure, maintain, and manage development tools;Develop proactive monitoring and backoffice tools for application systems using C++, PHP, Python, Django, MSSQL, and PostgreSQL

Arlington, Va, Us

Product support for Python, Perl, and Sun Java System Web Server (Now Oracle iPlanet Web Server)

Followed procedures for monitoring servers supporting the billing database and HPUX web servers running Open View ITO (OVO);moderated VIP conference calls for VoiceStream Operations; NT4/Win2K troubleshooting for local workstations

Paris, Fr

Software troubleshooting via phones and email [determined the problems of customers ranging from beginners to advanced users and walked them through steps in a way that they could understand];compiled work-around solutions for known issues;responsible for training new employees; tested and classified bugs for pre-release (alpha) software.

Boise, Idaho, Us

Manage employees, store closing and customer service

Computer Science

Computer Science

Education record