JOHN MARION GREFALDO

build production-grade Voice AI systems that talk, think, and act in real-time.

My work sits at the intersection of real-time conversational AI and enterprise infrastructure — architecting sub-200ms latency voice agents powered by multi-LLM orchestration (Claude, GPT-4o, Gemini, Grok), duplex WebSocket streaming (Deepgram ASR + ElevenLabs TTS), and enterprise RAG pipelines for contextually-groun

Platform Architecture & Engineering

Design and build the unified agentic platform spanning FMS, GMS, and WMS — a modular, API-first system where AI agents orchestrate vehicle tracking, service scheduling, parts inventory, and fleet operations autonomously

Architect real-time data pipelines for telemetry ingestion (GPS, OBD-II, IoT sensors), service events, and inventory movements

Define the mic

Key Responsibilities
Agentic AI Architecture: Design scalable multi-agent systems (e.g., inventory agents collaborating with freight routing agents). Build custom MCP servers to safely expose warehouse databases and tools as standardized primitives to LLM hosts.
Data Engineering & Scalability: Architect a high-throughput, multi-tenant data platform processing real-time supply chain events (EDI fee

Worked as Agentic SaaS Lead Engineer at King Caller AI.

Design and execute automated and manual test cases for end-to-end workflows across Retell, Make, n8n, and GHL.

Validate AI-driven logic, triggers, and response accuracy (voice/chat flows) in Retell-based workflows.

Build regression suites to test workflow automation reliability across platforms.

Debug, log, and document integration issues across Make/n8n scenarios and GHL automations.

Monitor

Solution Design and Architecture:
As an AI & ML Engineer/Solutions Architect, I design innovative AI and ML solutions, collaborating with cross-functional teams to develop robust architectures for scalability, performance, and security.

AI and ML Development:
I lead the development of sophisticated AI and ML models, utilizing Python, R, and TensorFlow. By implementing cutting-edge algorithms and

I define and execute a comprehensive technology strategy aligned with organizational goals, focusing on integrating machine learning and ASR telematics into smart motorcycles.

I lead the research, design, and development of machine learning algorithms and AI-powered systems specifically tailored for smart motorcycles.

I collaborate with data scientists, software engineers, and domain experts to

Worked as Principal AI Engineer at Global Link Distribution.

Key Responsibilities:
Lead AI Initiatives: Drive the design, development, and deployment of machine learning models and AI solutions to solve complex healthcare problems, such as predictive analytics, medical image analysis, natural language processing, and personalized medicine.
Research and Innovation: Conduct cutting-edge research in AI and machine learning, staying updated with the latest tren

Technology Strategy and Leadership:
As the CTO, I define and execute a comprehensive technology strategy that aligns with the overall goals and objectives of the organization. I identify and evaluate emerging AI technologies and trends for potential integration into our public sector software solutions. My visionary leadership and technical expertise drive innovation and ensure that our products a

Curriculum Development and Instruction:
I am responsible for developing and updating IT course curricula, ensuring they align with industry standards and emerging technologies. I deliver engaging and interactive lectures, facilitate class discussions, and provide hands-on training to enhance students' understanding and practical skills.

Student Assessment and Evaluation:
I design assessments, pro

Agile Project Management:
I serve as the Scrum Master, leading Agile project management practices for the TM Streaming and ISP industry. I facilitate effective communication, planning, and coordination among cross-functional teams, ensuring the successful delivery of projects within the defined timelines.

Team Collaboration and Empowerment:
I foster a collaborative and empowered team environment,

Designing innovative solutions for the VOIP industry powered by AI.
Leading the integration of AI technologies into VOIP systems.
Providing technical leadership and guidance to the architecture team.
Collaborating with stakeholders to align technical solutions.
Staying updated with industry trends and driving innovation.
Ensuring quality assurance and testing of AI-powered VOIP solutions.

committed to industry-aligned, skills-based assessments that identify the most talented entry-level programmers in the Philippines, so they can be matched with the best employers of programmers in the world.

Worked as AI & ML Engineer at Interline Consulting.

serve as ambassadors and evangelists for AWS Educate. These leaders share their knowledge and experience in teaching cloud computing with other educators at their institution, in their community, and around the world. Cloud Ambassadors are recognized in the education community, receive additional professional development, and are eligible for exclusive benefits for helping other educators provide

Understand the desired business or departmental strategy and outcome.
Break down those outcomes into defined parts including products, processes, and functions.
Decide on the right architecture to achieve what they have defined.
Understand software, hardware, and user interactions, integrations, and interfaces.
Advise project teams on implementing their recommended solutions.

Set objectives and strategies for the IT department
Select and implement suitable technology to streamline all internal operations and help optimize their strategic benefits
Design and customize technological systems and platforms to improve customer experience
Plan the implementation of new systems and provide guidance to IT professionals and other staff within the organization
Approve purchases

Worked as Lead Solutions Architect at Interline Consulting.

Building and integrating information systems to meet the company’s needs.
Assessing the systems architecture currently in place and working with technical staff to recommend solutions to improve it.
Resolving technical problems as they arise.
Providing supervision and guidance to development teams.
Continually researching current and emerging technologies and proposing changes where needed.
Inform

agreeing project objectives, representing the client's or organization’s interests providing advice on the management of projects, organizing the various professional people working on a project, carrying out risk assessment making sure that all the aims of the project are met, making sure the quality standards are met. seeing IT systems to keep track of people and progress recruiting specialists

Worked as Solutions Architect at Interline Consulting.

Worked as Digital Marketing Strategist at Interline Consulting.

Worked as Solutions Engineer at CoCreators Group.

Collaborate with network of staff to, ensure smooth and reliable operation of software and systems
for fulfilling business objectives and processes. Work with executive team members, decision makers, and stakeholders to define business requirements and systems goals, and to identify and resolve business systems issues.

Design and deploy new applications and enhancements to existing applications

Leads in the technical design and development of cross-functional, multi-platform application systems.
Directs business assessment and requirements analysis processes, for the development of hardware and operating systems .
Analyses features such as feasibility, associated costs, time, and the compatibility of new programs with existing programs, and hardware. Ensures that expected application per

Research and collaborate with professor for the enhancement nor betterment of academic curriculum utilizing technology

Completed a Master of Business Administration, gaining comprehensive business management skills.