I am an expert in SystemVerilog, Verilog, and VHDL with over 5 years of experience in FPGA and IPS verification using Cocotb and UVM. For IPS verification, I primarily use the Cocotb and UVM libraries.
Some highlights of my experience include:
1. Working with simulators such as Xilinx Vivado, Cadence, Synopsys, Icarus, and Verilator.
Assisting with digital system design projects, including building data paths and control units using Verilog.
2. Extensive experience with microprocessor projects; if you’re looking for an expert in this area, I can help.
3. Proficiency in assembly coding on the Edsim51 simulator using 8051 assembly language.
4. Strong command of C and C++ for related projects.
5. "I am skilled in RISC-V processor design and implementation on FPGA boards. I have expertise in developing, configuring, and deploying RISC-V architectures, enabling efficient and customized processor solutions on FPGA hardware."
Verilog
SystemVerilog
FPGA
Arduino IDE
C
C++
Assembly Language
Analog Circuit
Algorithms
Process Design
Simulink
Simulation Software
Electronic Design
KiCad
Altium Designer
Moaaz K.
Cairo, Egypt
$45/hr
4.9
54 jobs
I am a highly experienced digital design engineer with 4+ years of professional expertise in ASIC and FPGA design. I specialize in RTL coding using Verilog, VHDL, and SystemVerilog to deliver high-performance, optimized hardware solutions.
My technical toolkit includes:
- FPGA Design: Vivado, ISE, Diamond, Quartus
- ASIC Design: VCS, DVE, DC, Formality, Spyglass
- HDL Languages: Verilog, SystemVerilog, VHDL
- Design Optimization: Speed, area, and power optimization
- Simulation & Verification: Comprehensive testbench development
- Tools: Cadence Platform, ModelSim, VCS
I have successfully delivered 47+ complex projects including FPGA-based image encryption systems, efficient matrix multiplication designs, Bitcoin miners, and advanced processor architectures. Every project is delivered on time with detailed documentation and verification.
Clients appreciate my clear communication, attention to detail, and commitment to creating efficient, production-ready designs. Whether you need RTL coding, synthesis optimization, or full design implementation, I'm ready to help!
Digital Design
Digital Electronics
Cadence Platform
VHDL
FPGA
Verilog
VLSI
SystemVerilog
Kamil S.
Swiecie, Poland
$70/hr
5.0
1 jobs
Hi , With 8+ years of experience in VoIP engineering and telecom infrastructure, I help businesses build, customize, and scale reliable call center and communication platforms ranging from small business deployments to carrier-grade environments.
I specialize in designing high-performance VoIP systems, advanced dialer solutions, telecom billing platforms, and cloud-based communication infrastructures that are secure, scalable, and cost-effective.
⭐️ What I Can Help You With
1. VoIP & PBX Solutions
- Asterisk, FreePBX, FreeSWITCH, Elastix, Issabel, FusionPBX
- 3CX, PBXware, VoIPOffice
- SIP Trunking & Carrier Integrations
- Multi-server VoIP architecture
- High Availability (HA), clustering, failover, and load balancing
- Security hardening and system optimization
2. VICIDial & Call Center Development
- Complete Inbound, Outbound, and Blended Call Center Setup
- VICIDial installation, customization, and troubleshooting
- Custom campaign logic and workflow development
- Agent interface redesign and UI/UX enhancements
- Custom reports and dashboards
- VICIBox multi-server clustering
- Voice broadcasting and predictive dialing solutions
3. Asterisk Development
- Advanced dialplan design
- AGI scripting and custom applications
- IVR development and automation
- Call routing optimization
- Conference solutions and WebRTC integrations
- Custom webphone development
4. CRM & API Integrations
- Twilio, Telnyx, SignalWire, Bandwidth, Plivo, VoIP.ms
- CRM integrations and lead management systems
- REST API development and automation
- Webhook and real-time data synchronization
- Third-party call transfer solutions
- TrackDrive and custom lead posting integrations
5. Telecom Billing Platforms
- A2Billing
- ASTPP
- VOS3000
- Magnus Billing
⭐️Services include:
- Billing customization
- CDR processing
- Multi-tenant deployments
- Reseller management systems
- Callback and IVR customization
1. AI Voice Agents & Automation
- ElevenLabs
- Vapi
- AI-powered voice assistants
- Conversational AI integrations
- Voice workflow automation
2. SMS Solutions
- Bulk SMS platforms
- SMS broadcasting systems
- Two-way SMS applications
- CSV-based bulk messaging portals
- Twilio, Telnyx, SignalWire, Bandwidth, and VoIP.ms integrations
⭐️ Supported VoIP Providers
Extensive experience integrating with major telecom carriers and providers, including:
Twilio, Telnyx, SignalWire, VoIP.ms, Bandwidth, Flowroute, RingCentral, Nextiva, Plivo, Anveo, DIDLogic, IDT Express, SIP.US, Vitelity, Voxbeam, Telus, Nexmo, QuestBlue, Switch2VoIP, and many others.
⭐️ Why Clients Hire Me
✔️ 9+ Years of Specialized VoIP Experience
✔️ Deep Asterisk & VICIDial Source-Code Expertise
✔️ Carrier-Grade Deployments & Multi-Server Architectures
✔️ Strong API Integration & Automation Skills
✔️ Fast Troubleshooting & Performance Optimization
✔️ Reliable Communication & Long-Term Support
Whether you need a new VoIP deployment, VICIDial customization, telecom billing platform, AI voice integration, or a complete call center solution, I can deliver a stable, scalable, and production-ready system tailored to your business needs.
Le'ts have a chat !
Asterisk
FreePBX
VoIP Administration
System Administration
Linux
Linux System Administration
FreeSWITCH
A2Billing
Kamailio
SSH
TCP/IP
VoIP PBX
VoIP
MikroTik RouterOS
Vu L.
Hanoi, Vietnam
$35/hr
5.0
2 jobs
Senior FPGA engineer with 10+ years of hands-on design and verification experience,
specializing in high-speed networking, SoC development, and open-source FPGA frameworks.
Recent work includes:
- 5G O-RAN Fronthaul on Xilinx UltraScale+ (eCPRI, 25G Ethernet, JESD204B)
- RISC-V SoC debug transport over PCIe on AMD Alveo (LitePCIe, LiteX/Migen)
- Ethernet packet scheduler and rate limiter using LiteX/LiteEth (10G, AXI4-Stream)
Core strengths:
- FPGA platforms: Xilinx/AMD UltraScale+, Alveo, Kintex, Artix · Zynq-7000 · Intel/Altera Cyclone
- High-speed interfaces: 10G/25G Ethernet, PCIe (XDMA, LitePCIe), JESD204B, GTH/GTY
- Frameworks: LiteX/Migen, Cocotb, Vivado, Quartus
- Protocols: AXI4/AXI4-Stream, Wishbone, O-RAN 7.2x, IEEE 802.3, PTPv2
- Verification: UVM, Cocotb, formal verification (VC-Formal, JasperGold), VCS, Xcelium
- Languages: SystemVerilog, Verilog, Python, C
Available for remote engagements. Comfortable working async across time zones.
FPGA
Python
Verilog
SystemVerilog
VHDL
Wimalarathnage Thilina Udara D.
Katugastota, Sri Lanka
$25/hr
5.0
19 jobs
I help businesses migrate, manage, and troubleshoot VMware, Proxmox, AWS, Windows/Linux servers, and network infrastructure.
With 15+ years of hands-on IT experience, 6,700+ Upwork hours, and 100% Job Success, I specialize in:
- VMware vSphere, ESXi, vCenter, Horizon, and Dell server administration
- DELL NetApp SAN Storage Adminstration
- VMware to Proxmox migration planning and execution
- AWS server setup, troubleshooting, backup, and optimization
- Windows/Linux server management, SSL, DNS, VPN, firewall, and network design
- Documentation, monitoring, backup, and disaster recovery planning
Clients hire me when they need a reliable senior engineer who can investigate quickly, explain clearly, and fix production issues with minimal downtime.
Certifications include VCAP-DCV, VCP-DCV, VCP-NV, AWS SAA, CCNP, CCNA, Microsoft, Dell VxRail Deploy, and Dell PowerStore Deploy.
VMWare
Linux
VMware vSphere
Fortinet
Network Design
Cisco Router
Server Virtualization
VMware NSX
Windows Administration
AWS Server Migration
Linux System Administration
Storage Area Network
Amazon ECS
Microsoft Server
VMware Administration
Paul D.
Issy-les-Moulineaux, France
$30/hr
5.0
5 jobs
Hi there !
I'm Paul, a ML Performance Engineer. I specialize in both deploying and optimizing AI systems for efficient inference and training on modern GPU.
• Skills :
- Core Languages : CUDA C++, Python, Assembly, Golang
- High-Perf ML : PyTorch, JAX, vLLM, Nsight Compute, Triton, CUTLASS, MLIR, ONNX
- MLOps/Infra : Linux, SLURM, Docker, Git, DeepSpeed, FSDP, pytest
• Recent hands-on work :
- Custom CUDA fused kernels with BF16 tensor cores, FP32 accumulation: 7× speedup over PyTorch baseline
- Production multi-model vLLM stack on a 12× RTX 4090 / dual EPYC cluster I configured from bare metal
- ZeRO-2/3 benchmarking on Qwen2.5 7B with MFU tracking and Nsight Compute profiling
Artificial Intelligence
C++
Machine Learning
CUDA
Python
Performance Optimization
Docker
Deep Learning
Bash
GPU
Technical Documentation
WebRTC
Data Engineering
Cybersecurity Tool
PyTorch
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