Experienced Virtual Assistant | Cold Caller & Appointment Setter | Lead Generation Specialist

Highly organized and detail-oriented with 5 years of experience in outbound calling, lead generation, appointment setting, and customer support. Proficient in CRM tools, scheduling, data management, and client communication, with a strong focus on helping businesses grow through consistent lead outreach and efficient administrative support.

VICIDIAL Expert | VOIP SYSTEMS ENGINEER | CALL CENTER SYSTEM OPTIMIZATION SPECIALIST | Mitigate Spam Scam Likely Calls | STIR/SHAKEN Compliance | MSP (Managed Services Provider | 10+ Years experience

Results-driven VoIP and Systems Engineer with over 10+ years of experience designing, deploying, and optimizing scalable IT and telephony infrastructures. Specialized in VICIdial, Asterisk-based PBX systems, and outbound call center performance optimization.

Proven track record in improving contact rates, dialing efficiency, and number reputation, including reducing “Scam Likely” tagging through advanced DID management strategies and traffic balancing. Adept at delivering high-availability systems, automation, and deep technical troubleshooting (L2/L3 support) for global clients.

CORE EXPERTISE
• VoIP & Call Center Support Engineer (VICIdial, FreePBX, VitalPBX, Asterisk)
• Outbound Dialing Optimization & Number Reputation Management
• DID Rotation, CNAM, STIR/SHAKEN Compliance
• Linux Systems Administration & Infrastructure Automation
• Cloud Platforms: AWS, Azure, DigitalOcean, Vultr
• Virtualization: VMware ESXi, Hyper-V
• Network Architecture (TCP/IP, VPN, Firewalls, Routing)
• Monitoring, High Availability & Disaster Recovery
• Technical Leadership & Project Delivery
• MSP (Managed Service Provider) VoIP Phone systems using FreePBX and VitalPBX

Why Clients Hire Me
- Deep real-world experience (not just theory)
- Strong L2/L3 troubleshooting skills
- Focus on results (more connects, fewer flags)
- Clear communication and reliable support
- Experience with global carriers and compliance

KEY SKILLS
- VICIdial, Asterisk, FreePBX, VitalPBX
- VoIP, SIP, RTP, Call Routing, IVR
- Outbound Dialing Optimization
- DID Reputation Management
- STIR/SHAKEN Compliance
- Linux System Administration (CentOS, Ubuntu, Debian)
- AWS, Azure, DigitalOcean, Vultr
- VMware, ESXi, Hyper-V
- Bash, Python, Perl

Hi! I'm Dave Wenceslao from Davao City, Philippines. I have been a successful telemarketer for 3 years with a proven track of high sales records, and that led me to be promoted as a Sales Team Supervisor in a BPO Company where I am located.

As a Sales Team Manager for years now, I'm involved in taking care of administrative tasks, sales strategies and also managing the team to produce high sales revenue.

I have a good grasp of, and these are the services that I can offer:

ADMINISTRATIVE / VIRTUAL ASSISTANCE

- data entry (spreadsheets)
- email management
- internet research
- file management
- CRM management
- project management
- personal assistance

SALES

- telemarketing
- sales strategy
- team management
- lead generation
- B2C
- dialer and data management

Thanks and talk to you soon!

I have over 2 years of BPO experience as a Sales Representative, where I handled inbound and outbound calls, email/SMS support, and assisted clients with applications and document collection. I also transitioned into a Data Analyst role, where I reviewed and verified data using Excel, and recently worked as a Virtual Assistant supporting daily operations, data entry, and website testing.