Kristopher Hall Email & Phone Number

Ellicott City, Md, Us

Severna Park, Maryland, Us

• Built data transformation capabilities in Java and Python for a cloud-native (Kubernetes) platform, supporting eight new proprietary data formats and ensuring prompt delivery to corporate repositories and partners• Created Python software to convert two proprietary threat data into STIX format, enabling seamless and timely sharing of cyber threat information with partners• Identified three software defects adversely impacting system performance and stability and developed bug fixes in Java to maintain and enhance the processing platform as a managed service• Performed design and code reviews to enhance system architecture and code quality

Mclean, Va, Us

Leadership & Collaboration ◦ Directed DarkLabs 5G cyber incubator team of 14, resulting in five patents and 12 commercial software products enhancing telco-grade, cloud-native (Kubernetes) 5G core and edge computing (MEC) security ◦ Identified security gaps to define and guide R&D and engaged stakeholders and clients to refine ambiguous and conflicting requirements, aligning R&D results to position the firm to win competitive bids ◦ Coached a data science team to develop AI/ML software for 5G performance optimization and threat detection. Established ML pipeline including Kafka and Elastic. ◦ Led the development of Red Team procedures and offensive security and penetration testing capabilities for 5G networks, improving 5G systems and products through offensive security testing ◦ Reduced security assessment costs with the development of a patent-pending 5G Pen Test Toolkit in Java with Spring Boot and Tomcat ◦ Mentored nine reports and one intern, achieving 100% employee retention over 2.5 yearsIndividual Contributor Results ◦ Created a patent-pending, commercialized Clojure microservices application applying AI/ML for detecting 5G security anomalies using high-dimensionality data, operational on a 5G/MEC system ◦ Performed system design and code reviews and resolved hard software bugs and 5G-specific challenges ◦ Conducted attack surface analysis and threat modeling for 5G networks to determine R&D prioritiesIndustry Engagement ◦ Engaged in O-RAN Alliance Workgroups (WG1 and WG11) to understand evolving specifications, shaping R&D capabilities to reduce delivery time and costs ◦ Contributed to the industry paper "5G Network Slicing: Security Considerations for Design, Deployment, and Maintenance" published by the NSA/CISA Secure Network Slicing Panel

• Led a nine-member team to develop, deploy, and support a Java-based control system for 3G/4G hardware radios. As an individual contributor: delivered 20 command and response processing modules.• Modernized legacy dataflow by developing 12 Java NiFi processors and controllers and building ReSTful APIs to interact with corporate systems, preventing obsolescence and data loss of a critical data flow

Dallas, Tx, Us

• Led a geographically-distributed team of six to build a telco-grade NFVI platform hosting a virtualized 4G/LTE network and cloud-native (Kubernetes) 5G SA network with ONAP (service orchestrator)• Designed and deployed a system architecture with mobile core and edge (MEC) clouds connected by an SDN-enabled L1/L3 transport network, integrating OpenDaylight as the SDN Global Controller• Led the creation of security products for 4G/5G networks, including a Python-based network characterization application and a Java/Clojure anomalous behavior detection capability using node centrality algorithms• Conducted security characterization using OpenVAS, nmap, and Wireshark, reducing system vulnerabilities by 20% and enhancing overall security• Served as technical leader and contributor for AT&T's secure mobility reference implementation, compliant with NSA's CSfC program• Authored eight white papers, driving 72% YOY growth in strategic 4G/5G mobility business• Mentored four interns to develop IoT prototypes, generating six new client engagements

• Led a 20-member team to double the delivery of C-based embedded 3G/4G security products, exceeding first-year objectives. Performed system design and code reviews and approved final product releases.• Reduced product delivery time by 30% through process improvements, including metrics collection/analysis, task tracking, code peer reviews, CI/CD pipeline, test-driven development, and automated hardware testing

Led a team of three to develop a PHP/MySQL system with OpenGIS extensions, enabling rapid identification of data privacy leaks in mobile applications. Migrated to Hadoop with MapReduce for scalable analytics.

• Delivered architectural solutions for complex customer problems using 3G, IMS, and IPTV as a SME to the CTO• Deployed, tested, and operated systems to ensure successful trials and customer delivery

• Architected and deployed carrier-grade Ericsson IMS with 3G network. Led team to deliver a Java-based IMS client for SIP signaling conformance and security testing.• Prototyped algorithm in Octave (MATLAB compatible) to detect 0-day malicious worms and implemented system in Java to enhance network security• Built a rogue Bluetooth device detector by prototyping an algorithm in MATLAB, and led team to build a system using commercial chipsets, Xilinx FPGA with VHDL, and C-based controller, enhancing wireless security

• Created a C application to interface with GPIB devices, recording voltage/temperature measurements and identifying overheating in an experimental antenna system and facilitating rapid repair• Built a Perl application to convert documents into HTML for a Java-based system, reducing development time of the system and improving documentation access

Doctor Of Philosophy (Ph.D.), Electrical Engineering

Master Of Science (Ms), Electrical Engineering

Bachelor Of Science (Bs), Electrical Engineering