Experienced C++ Developer

6/2021 – 12/2021

- Documentation and development of legal requirements, preparation for product assessment
- Modern C++ development for Linux using Visual Studio 2019 and WSL
- Focus on security aspects and SOAP

Requirements Management, C++, Git, SOAP, Technische Dokumentation, Testdesign (IT)

9/2020 – 4/2021

Implementation and testing of 5G U-plane packed scheduler features.

C++, Git, Jira, Mobilfunknetze, Technisches Testing

2/2018 – 8/2020

Embedded SW development:
- Requirement analysis, effort estimation, planning
- Implementation of new functionalities
- Verification in the development (UT) environment
- Troubleshooting trace analysis
- Debugging in development and in production environment
- Verification and fault analysis in the vehicle

C++, Confluence, Embedded Systems, Informatik, Jira, Continuous Integration

7/2012 – 12/2017

Leading developer of IMS functionalities for LTE applications according to 3GPP and IETF standards:
- Architecture and SW design; implementation (C++1x, linux / Windows)
- Test design, automation, continuous integration
- Troubleshooting, support
- IMS Subscriber management
- Registration, authentication (HTTP Digest, IMS-AKAv1/v2)
- Event subscriptions (reg, presence, conference)
- IPsec: transport (for IMS) and tunnel (for ePDG) modes; IMS-ePDG interworking
- VoLTE and ViLTE functionalities including SRVCC handover variants, E911, conference calls, WLAN offloading, NW resource management, QoS
- User Plane functionalities: media transfer (audio, video, RTP/RTCP), media, negotiation
- RCS features: Presence, chat, file transfer (RTCP, CPIM documents)

Scrum, Agile Methodologie, Test Automation, Software Design, Enterprise Architect (EA), Objektorientierte Software-Entwicklung, ASN.1, C++, Java (allg.), Linux Entwicklung, Visual C++, Git, Jenkins, SIP (Session Initiation Protocol), RTP (Real-Time Transport Protocol), LTE (Telekommunikation)

6/2011 – 7/2012

Leading the maintenance team (17 engineers) of a mature GSM core network product.
Project management responsibilities:
• Close follow-up of the corrections of the software fault reports
• Supporting the engineers by defining priorities, participating in technical discussions with the Customer Interaction Teams and Technical Support, managing escalations
• Case status reporting to the stakeholders and project reporting to senior management
Line management responsibilities:
• Following the development of the product; ensuring the required capacity and competence for the maintenance project
• Providing career and competence development guidance to the team members
• Allocation of tasks and resources
• Performance management
• Recruitment: Job interviewsinduction of the new hires

Projektleitung / Teamleitung

2/2010 – 5/2011

Responsible for the technical coordination of the acceptance of a new product at the pilot customer. Planning and implementing the introduction of the system in the customer's live network to ensure a smooth transition.
Preparation and close follow-up of the test phases, leading technical discussions with the customer and coordinating software deliveries in close cooperation with the R&D and other support organizations of the vendor.
Ensuring all requirements (incl. SW, HW, support) are met for a well-organized and safe live operation of the system.

Technisches Projektmanagement

11/2003 – 1/2010

• Specification, development, testing, and maintenance of IMS components using C++ and Linux
• Training development: C++, ClearCase, Linux
• Automated test environment, testing tools, and continuous integration framework
• Leading a virtual team that aims at improvement of the code quality and performance
• Product maintenance and troubleshooting, customer support
• Presenting future product features to the customer
• Agile software development, scrum master role, technical lead of the scrum team
• On-site support and participation in acceptance testing of a new product at customer sites

Agile Methodologie, Test Automation, Objektorientierte Software-Entwicklung, C++, Linux Entwicklung, SIP (Session Initiation Protocol)