MICHAEL SEXAUER
Land O Lakes,USA
Summary
Results-driven Software Development Leader with extensive experience in agile methodologies, SDLC, and project management. Proven track record of successfully delivering projects through effective collaboration with both offshore and onshore teams. Demonstrates strong expertise in DevOps practices and web UI technologies, enhancing operational efficiency and product quality. Aiming to leverage technical leadership skills to drive innovation and streamline software delivery processes.
Overview
28
28
years of professional experience
Work History
Senior Technical Specialist
CareCentrix
Tampa, USA
04.2023 - 10.2024
- Provide technical direction across multiple application development teams including aiding with code reviews for core application development teams, guidance on HIPAA compliance, guidance on SonarQube ruleset, reported on system performance metrics and worked with development teams to improve performance of applications
- Assist development and security teams with gathering & reviewing responses to HITRUST & SOC1 audit evidence requests
- Primary contact for Security Team providing information related to systems, behavior, logging, user security, architecture, status on remediation of security issues identified by Checkmarx, Pen Testing, etc
- As well as provide log analysis for primary customer facing web application related to various 3rd party security incidents (Change Healthcare breach, etc.)
- Lead technical project and provided DB design & guidance for all aspects of User Disablement Automation project which leveraged data from Active Directory to disable users in 11 downstream systems (several web apps, Sales Force, JD Edwards, VB.Net application, etc.) while maintaining logs related to job and user disable actions to aid in HITRUST & SOC1 compliance
- Lead technical project to improve security of DB user ID for customer facing web application (Provider Portal) reduced access from 208 schemas to 11 and significantly reduced DB object access from thousands to under 300
- Provided code, DB analysis, coordination as well as leadership to developers involved
- Developed automation in Java to assess risk of reaching maximum size for database sequences and columns by scanning Oracle database schemas and returning table & sequence data and provided reporting to Senior IT Management
- Performed a proof of concepts for the OCR of faxes using AWS Textract, AWS S3 buckets, etc
- To allow for generation of JSON for ingestion by internal systems
- Aided in proof of concept to embedded REACT components in a legacy Struts 1 application
- Lead and track improvements in system monitoring/observability using AppDynamics, SolarWinds and other tools
Senior Director of Application Development
CareCentrix
Tampa, USA
04.2018 - 04.2023
- Managed a cost center budget of $ 1.1 million dollars annually which included 6 app
- Dev
- Teams consisting of 22 developers comprised of 13 offshore, 3 onsite contractors and 6 employees
- Was responsible for setting objectives and managing performance for employees and for managing work delivery and quality of offshore including both projects & support
- Managed projects & enhancements for more than 10 applications through full SDLC interfacing with business partners, project management, Dev Ops, system admins, quality assurance, UAT teams, vendors, etc
- From estimation through post implementation support
- Work with corporate IT security and auditors to ensure primary externally facing applications are secure
- This includes yearly penetration testing by external vendors
- Supported the achievement of the rigorous HITRUST security certification
- Managed development covering web-based Java applications, web services, a php web application and a Joomla intranet platform
- Provided low production defect and 99.9% up time for primary externally facing application used to coordinate care for patients and help administer/process claims
- The system handled 48, 000 users per month processing 226, 000 authorization related transactions per month
- It integrated with web services, business rules and several other systems and technologies
- Provided guidance for performance optimizations of Java code, SQL, participated in code reviews, defect fixes, UI design and aided in troubleshooting production issues
- Met with stakeholders to prioritize work based on business objectives, capacity and other factors
Director of Application Development
CareCentrix
Tampa, USA
04.2015 - 04.2018
- Continued managing the Portal Team and took on an additional area including intranet
- Lead team through vendor transition and helped vet and train developers when we migrated from one offshore vendor to another
- Was able to transition vendors with only minor disruption to project schedule
- Successfully moved new claims processing system to production and worked with offshore teams through defects, configuration changes and other issues
- Added authorization and patient service layers to Portal to facilitate sharing of functionality in both services and in business rules system
- Successfully rolled out web components for the Post Acute Care MVP as part of new product strategy
- Achieved system availability of 99.9% and improved performance of system through identifying bottlenecks and making improvements especially in SQL
- Made improvements in conjunction with DevOps allowing greater automation of builds and automation of QA code drops
- Improved intranet through upgrades of Joomla, php, mySQL and a redesign of site including adding functionality like glossary, search, mega menu, etc
Web Portal COE Lead
CareCentrix
Tampa, USA
07.2013 - 04.2015
- Within first three months I stabilized external facing web application which had 3-5 outages per week and brought outages down to zero
- Reduced offshore team QA defect rate by 30% by improving code quality through code reviews and helping team better understand requirements
- Helped business improve user interface requirements through alternatives approaches and better mock-ups to improve usability
- Improved prioritization and turnaround of defects to QA through better coordination with offshore and providing detailed information related to issues
- Improved on-time delivery of projects to QA and reduced production defects below SLA
Senior Java Developer
Hot Topic Inc.
City of Industry, USA
11.2012 - 05.2013
- Developer on ecommerce team for specialty clothing retailer supporting three brands: Hot Topic, Torrid and Blackheart
- Full SDLC development interfacing with project management, software quality assurance, business teams, vendors, etc
- Perform PCI compliant web development using Java, JSP, JSTL, HTML, CSS, Javascript, JQuery, SQL, Blue Martini/Escalate Retail, Oracle & WebLogic on high traffic, customer facing ecommerce site with more than 3 million page views per day
- Aided in performance optimization of Java code, SQL, participate in code reviews, bug fixes and regular site maintenance
- Developed functionality for launch of new brand www.blackheartlingerie.com included 3rd party marketing tagging/tracking, contact us, email sign up, find a store, etc
- Using RIA, JSON, and AJAX technologies
- Developed functionality for redesign of Hot Topic and Torrid sites refactoring code for improved reuse and migrating JSP scriplets to JSTL tags and functions
- Responsible for 3rd party site tracking integration (Coremetrics, Kenshoo, ClearSaleing, TrueEffect, etc.)
- Created internal tools to: test product promotions (identified products and inventory) and a Java batch process to mask numbers for expired credit cards for Payment Card Industry compliance
- Developed internal web application to manage store location data stored in JSON format using JQuery, 2.js, validVal, etc
- Made JSON data searchable, editable and integrated Google Maps for geocoding of store locations
Java Application Developer
Smile Brands
Irvine, USA
11.2010 - 08.2012
- Development of a new web-based RIA clinical management system for dental offices using ExtJS 4 JavaScript framework, REST, AJAX, JSON, Java, Spring, Hibernate, Annotations, JPA, Aspects, etc
- To allow more efficient management of dental offices
- System replaces a legacy application saving company $ 1 million/year and allows offices to manage their schedules, appointments, patient data, insurance data, provider data (dentist, specialists, etc.), dental x-rays, intra oral photos, patient transactions, office hours, clinical care plans, clinical charts periodontal charts & restorative charts, billing data, claims data, etc
- Through a rich client-side UI
- Specific scope of work included patient/office management and billing sections of the application creating functionality to support the creation and maintenance of patient and office information as well as billing UI
- Leveraged Spring, Hibernate, JPA and other Java frameworks to create back-end Models, DAOs, Services and Controllers
- Used Aspects to implement functionality related to patient visits so that visit events could be tracked arrival, x-rays, treatment and completion and status changes
- Automated unit testing with JUNIT & project artifacts managed with Maven
Director of Application Development
Healthesystems
Tampa, USA
04.2007 - 11.2010
- Grew application development team from 6 to 23 in two years
- Managed 4 supervisors & 19 application developers including hiring, performance reviews, work assignment and aligning of work with project deliverables through full development life cycle
- Implemented Java coding standards and best practices
- Responsible for process definition, process improvement, coding standards, audit compliance, status reporting to CIO and coordination with other groups (Business Analysts, Quality Assurance, Database Administration, Project Management, etc.)
- Successfully lead development teams through major initiatives: rewrite of several customer applications using Google Web Toolkit (GWT), design & development of a major new system to support a line of business generating $600,000/month in billing, manage development of clinical application rewrite using Scrum methodology, etc
- Responsible for ongoing enhancements, maintenance, troubleshooting and issue resolution for over 44 applications
- Implemented new source code management tool, automated software builds and aided in implementation of change management
- Design and develop web services, batch processes, message-oriented middleware solutions and web applications for B2B system
- Dynamic web 2.0 applications utilizing Java Servlets/JSPs, html, JavaScript, dhtml, JSON, XML, CSS, AJAX, Google Web Toolkit (GWT), etc
Senior Application Developer/Analyst
Chase Financial Services
Tampa, USA
04.2005 - 04.2007
- Technology project management with business partners through full project life cycle, demonstrations to clients, requirements, mockups, support, etc
- Mentor new team members and function as project lead on large projects
- Development of web-based reports for telephone call centers for multiple business units
- Reporting used to manage nationwide call centers 8,000 telephone bankers
- Develop interactive applications using Java/JSP/Servlets, SQL/PL-SQL, JavaScript, html, etc
- Database table design, stored procedure creation, etc
- In both Sybase and Oracle
- Oracle database volume was greater than ten million new records/month
- Designed, developed and implemented fax log processing application utilizing Unix Korn shell scripts to run java fax log parsing application processing 1,000 faxes per day and updating Oracle database with fax results for display in report
- Application maintenance and enhancement for proprietary Java based reporting framework as well as other Java based reports and applications
Application Developer/Team Lead
JPMorgan Chase
Tampa, USA
01.2001 - 04.2005
- Mentor developers, reviewed code and manage Oracle database structure changes
- Work closely with business partners to design, develop, unit test, implement, maintain, and document functionality for the Card Services intranet/portal
- Post merger site chosen as best in class and aggressively moved to release Day One portal which increased hits to 150K/day & audience to 20K end-users
- Market indices using XSL to transform XML to sorted HTML, java program run via Korn Shell script to cache XML feed on server and migration from Verity to Google Search using Java Beans
- Led efforts in coding the JSP content management application with focus on reusable components
- Planned database tables, designed and coded functionality in JSP/Java/JDBC/SQL and coordinated work streams with other developers
- Collaborated with business leaders from concept to implementation to design & develop dynamic, database driven site with configurable portlet-like components that administrators could rearrange, expand, control number of links, etc
- Through content management application v 1.0 of intranet in 2001
IBM/Lotus Notes Developer
PricewaterhouseCoopers PwC
Tampa, USA
12.1997 - 07.1999
- Provided 2nd & 3rd level support on Lotus Notes 4.52 client & server issues replication, mail routing, ACL, Name & Address Book, etc., LAN/WAN, remote access, MS Office, Win 95, Internet Explorer, Intranet & TCP/IP
- 24/7 support rotation of 80 Notes servers and served as principal point of contact for numerous Novell & NT servers
- Was responsible for escalation of issues
- Administered client dedicated Notes servers with connections to over 300 servers and more than 800 Notes users
- Provided intermediate level Development of Notes databases including development of mail surveys, export/import of data, and creation of unique solutions for data collection and consolidation in Notes
- Was responsible for supervision of two technical staff including quality assurance of their resolutions, monitoring of performance, training, scheduling, provided guidance on technical and firm related issues
Help Desk Technician
Computer Generated Solutions
Tampa, USA
10.1996 - 12.1997
- Help Desk Support
- Provided level 2 tech
- Support to Ernst & Young as a contractor of IBM
- Support included LAN/WAN, remote access, MS Office, Win 95, Lotus Notes 4, Netscape, Internet Explorer, intranet, TCP/IP, and various custom accounting applications
- Served as Office Support Supervisor to aid in coordinating help desk efforts with regional Ernst & Young offices and resolve conflicts
Education
Bachelor Degree -
University of South Florida
Skills
- Java EE Development
- JavaScript
- JSP
- JSON
- Technical leadership
- Application support
- Performance optimization
- Web development
- REST
- AJAX
- CSS
- HTML
- SQL
- T-SQL
- PL/SQL
- XML
- XSL
- UNIX Shell Scripting
- Windows Server
- Linux
- Tomcat
- Oracle
- Sybase
- MS SQL Server
- MySQL
- Apache
- Jetty
- JBOSS
- IIS
- Hibernate
- Apache Commons
- Slf4j
- Log4J
- ExtJS
- JQuery
- API development
- Jira
- Bitbucket
- Jenkins
- Confluence
- SharePoint
- Oracle SQL Developer
- NotePad
- Spring/Spring Boot
- Joomla
Website
https://happygotechie.com/
Languages
Spanish
Professional
Timeline
Senior Technical Specialist
CareCentrix
04.2023 - 10.2024
Senior Director of Application Development
CareCentrix
04.2018 - 04.2023
Director of Application Development
CareCentrix
04.2015 - 04.2018
Web Portal COE Lead
CareCentrix
07.2013 - 04.2015
Senior Java Developer
Hot Topic Inc.
11.2012 - 05.2013
Java Application Developer
Smile Brands
11.2010 - 08.2012
Director of Application Development
Healthesystems
04.2007 - 11.2010
Senior Application Developer/Analyst
Chase Financial Services
04.2005 - 04.2007
Application Developer/Team Lead
JPMorgan Chase
01.2001 - 04.2005
IBM/Lotus Notes Developer
PricewaterhouseCoopers PwC
12.1997 - 07.1999
Help Desk Technician
Computer Generated Solutions
10.1996 - 12.1997
Bachelor Degree -
University of South Florida
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