Dan Oscar Mossesgeld
Software Developer / IT Specialist
Bataan
Summary
Software developer focused on building both desktop and web applications for business operations. Experienced in developing custom accounting, reporting, and production-monitoring tools while also maintaining the hardware they run on. I work directly with users to ensure systems are practical, reliable, and facility-ready
Overview
10
10
years of professional experience
Work History
Web Developer
Mage Technologies, Inc
01.2025 - Current
- Web Development: Collaborated with a team on GitHub to build and deploy web-based ERP and POS systems using SvelteKit, TypeScript, and Firebase.
Systems Developer
Digisoft Business Solutions Inc
07.2023 - Current
- Accounting Software: Built custom .NET systems to manage business finances, including tools for tracking transactions, balancing accounts, and generating financial reports.
- QuickBooks & Data Tools: Developed software to pull and organize data from QuickBooks, using MSSQL and Crystal Reports to create automated documentation and custom reports.
- Client Consultation: Met with clients to understand their business needs, proposed technical solutions, and updated software features based on their feedback.
IT Specialist
Freelance
05.2016 - Current
- Tech Support: Troubleshoot hardware and software issues to ensure that the computer is running with no issues.
- Custom PC Building: Built custom desktops from scratch, selecting specific parts to match performance needs and user requirements.
- System Setup: Installed and configured hardware, software, and drivers to ensure everything was ready for daily use.
- Upgrades & Maintenance: Upgraded components and updated software to improve speed and keep systems compatible with new technology.
Lead Operations Developer
MinebeaMitsumi Inc.
06.2022 - 06.2023
- Production Monitoring: Built the software used to track machine output and staff productivity, making it easier for the team to see exactly how the floor is running in real-time.
- Data Visualization: Created simple dashboards that turn raw production data into clear charts, helping management spot trends and fix bottlenecks faster.
- Cross-Branch Coordination: Worked directly with another headquarters to make sure the software I developed met company standards and worked for every site.
- Training & Support: Ran training sessions for operators and updated the system based on their direct feedback to make sure it was easy to use and fully adopted.
Student IT Assistant
Polytechnic University of the Philippines
06.2018 - 01.2021
- Technical Support: Provided hands-on support for hardware and network problems, ensuring students and staff had quick solutions to technical issues.
- Access Management: Managed user accounts by handling password resets and restoring access to locked accounts.
- System Maintenance: Cleaned malware infections, fixed system errors, and performed OS updates to keep computers fast and secure.
Education
Bachelor of Science - Information Technology
Polytechnic University of The Philippines
Mariveles, Bataan04.2023
National Certificate II - Computer System Servicing
Technical Education and Skills Development Authority
Mariveles, Bataan09.2016
Skills
Programming & Frameworks: VBNET, C#, ASPNET, Java, C, HTML, CSS, JavaScript, Svelte, TypeScript, NET Core, and Firebase
Databases: MSSQL/SMSS, MySQL/MariaDB, Google Firebase, Azure SQL, SQLite
Hardware & Software Support: Hands-on hardware repair, custom PC builds, and OS optimization; expert in diagnosing software conflicts and system-level troubleshooting
Data & Productivity: Advanced Excel (VBA/Macros) for building data tools and automated reports; experienced in presenting technical project updates to management
Awards
- Innovative Award
MinebeaMitsumi
Recognized for building a production-wide monitoring system and data visualization platform that improved tracking accuracy and operational efficiency across the entire facility.
- Most Outstanding Presenter
MinebeaMitsumi
Awarded for excellence in presenting complex technical projects and system updates to management teams
Timeline
Web Developer
Mage Technologies, Inc
01.2025 - Current
Systems Developer
Digisoft Business Solutions Inc
07.2023 - Current
Lead Operations Developer
MinebeaMitsumi Inc.
06.2022 - 06.2023
Student IT Assistant
Polytechnic University of the Philippines
06.2018 - 01.2021
IT Specialist
Freelance
05.2016 - Current
National Certificate II - Computer System Servicing
Technical Education and Skills Development Authority
Bachelor of Science - Information Technology
Polytechnic University of The Philippines