Frank Welk-Software Development
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Experience
Software Development
REI and EMI
- Code review, bug fixing, and new development of program code in PL/SQL and Oracle Forms
- Migration of the database version to Oracle 12/19 and migration of the Oracle Forms environment from client-server to web (6i → 12c)
- Fixing blocking sessions and implementing new workflow requirements
- Use of PL/SQL packages, procedures, functions, database triggers, batch files, and Java applications
- Revision of screen masks based on Oracle Forms and client-side PL/SQL code
- Business handling of issuing and processing vouchers (REI = Reimbursement; EMI = Emission), including billing with acceptance partners
- Agile development based on SCRUM with monthly sprints and weekly coordination meetings
Development and DBA
Modernization of GUI UNISOLO-POESY
- Continued modernization of the user interface of the practice management system UNISOLO-POESY with APEX 23, PL/SQL and Oracle Forms
Software Development
Relex and Narab
- Development of interfaces for exporting master data and transaction data (.csv UTF-8 encoded) from the inventory management system of a pharmaceutical wholesaler
- Implementation of the interfaces as PL/SQL packages
- Execution of extensive developer tests and smoke tests in the AI application Relex for ordering suggestions
- Development of screen masks for maintaining and assigning post-discount configurations in the RX/OTC product area
- Use of partitioning for importing VSE mainframe data
- Agile development based on SCRUM with monthly sprints
Development and DBA
Modernization of GUI UNISOLO-POESY
- Modernization of the user interface of the practice management system UNISOLO-POESY
- Migration of single-form and multi-form screen masks from Oracle Forms technology to APEX (service chains, text modules, fee schedules, cashier data, patient master data, electronic patient record)
Development
DWH Anonymization
- Development of PL/SQL procedures, functions, and packages for anonymizing personal data in an insurance data warehouse
- Implementation of algorithms according to specification requirements and creation of test concepts
- Use of the extended waterfall model
Subproject Management, Software Development
MAS (Modernization of Billing and Master Data)
- Modernization of billing and master data at the Association of Statutory Health Insurance Physicians of Lower Saxony
- Migration from direct master data access to functional abstractions for a third-party application
- Carrying out extensive developer tests and smoke tests
- Agile development based on SCRUM and project planning via KANBAN boards
System Analysis and Development
System Analysis
- Handling development tasks using VBA, Java, and StreamServe Persuasion under Windows for the output management of a PSD Bank in the automotive sector
Subproject Management, Software Development
Data Record Management in Engine Control Units
- Development of a software product for quality assurance in engineering services for the automotive supplier industry
- Management of software variants, labels, and user rights
- Development of the graphical user interface with VB and ADO
- Implementation of replication mechanisms for winter/summer testing and multi-master replication
Project Management and Software Development as well as DBA
UNISOLO®-POESY
- Design, implementation, and ongoing project management of the practice management system for doctors, hospitals, and clinics
- Maintenance and update coordination with a legally required hotline
- Management of >300 screen masks and >200,000 lines of program code for 50 main screens
- Functions: patient master data management, health insurance billing (KVDT), private billing (GOÄ, DKGNT, PAD), BG billing, ICD-10 diagnosis keys, interfaces to medical devices, certified medication database
- Administration of approx. 50 Oracle databases including backup and recovery via RMAN and OEM
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Healthcare, Insurance, Automotive, Information Technology, Pharmaceutical, and Banking and Finance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Project Management, and Quality Assurance.
Summary
My main motivation in software development is to turn business requirements into a product with ambition.
My passion is to create solutions that are not only efficient, but also optimized for usability.
With this combination, I aim to shape not only the technical side, but also the user experience at the highest level.
Skills
- Software Development
- Requirements Management
- Database Design/Architecture
- Database Administration (Oracle Databases Version 6 To 19)
- Oracle Developer (Forms, Reports, Graphics)
- Pl/Sql Developer
- Apex 19 And 23
- Vba, Office Vba
- Project Management
Languages
Education
Technische Universität zu Braunschweig
Diploma in Computer Science, minor in Statistics and Operations Research (Econometrics) · Computer Science · Braunschweig, Germany · very good
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Frank is based in Vienna, Austria.
Frank speaks the following languages: German (Native), English (Advanced), Spanish (Elementary), French (Elementary).
Frank has at least 32 years of experience. During this time, Frank has worked in at least 6 different roles and for 8 different companies. The average length of individual experience is 4 years and 6 months. Note that Frank may not have shared all experience and actually has more experience.
Based on recent experience, Frank would be well-suited for roles such as: Software Development, Development and DBA, Development.
Frank's most recent position is Software Development at REI and EMI.
In recent years, Frank has worked for REI and EMI, Modernization of GUI UNISOLO-POESY, Relex and Narab, and UNISOLO®-POESY.
Frank is most experienced in industries like Healthcare, Insurance, and Automotive. Frank also has some experience in Information Technology, Pharmaceutical, and Banking and Finance.
Frank is most experienced in business areas like Information Technology, Product Development, and Project Management. Frank also has some experience in Quality Assurance.
Frank has recently worked in industries like Healthcare, Information Technology, and Pharmaceutical.
Frank has recently worked in business areas like Information Technology, Product Development, and Project Management.
Frank holds a Master in Computer Science from Technische Universität zu Braunschweig.
The availability of Frank needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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