Hire the Best RTLinux Specialists

* Expert-level Embedded C/C++ development for MCU and Embedded Linux platforms. * Strong expertise in Embedded System Architecture, system design, and technical leadership. * Extensive experience with ARM Cortex-M/A, STM32, NXP i.MX, Nordic, ESP32, TI, and Qualcomm platforms. * Advanced knowledge of RTOS and Embedded Linux: FreeRTOS, Zephyr, Yocto, Buildroot, Linux Kernel, Device Drivers. * Experienced in BSP bring-up, bootloader development, OTA/FOTA, secure boot, and system optimization. * Strong experience in Automotive and Industrial Embedded Systems development. * Deep understanding of CAN/CAN FD, LIN, UART, SPI, I2C, Modbus, Ethernet, TCP/IP , BLE, and MQTT. * Hands-on experience with IoT, Edge AI, connected devices, and cloud-integrated embedded systems. * Experienced in debugging, hardware-software integration, and system optimization. * Experience leading engineering teams and managing embedded projects from concept to production.

I am a Wireless Network Engineer specializing in WLAN Design, delivering high-performance, secure, and scalable wireless networks for enterprises, corporate environments, and large-scale facilities. With 6+ years of hands-on experience, I design, optimize, and troubleshoot WiFi networks to ensure maximum coverage, high capacity, seamless roaming, and rock-solid reliability. What I Do Best • WLAN Design and WiFi Planning • RF Planning, Predictive and Active Site Surveys • Ekahau and iBwave Network Design • Heatmap Analysis and Access Point Placement • Interference Mitigation and Channel Optimization • Roaming Optimization and Performance Tuning • High-Density and Enterprise WiFi Optimization • Wireless Troubleshooting and Network Audits Industries and Environments I Have Worked With • Enterprise Offices and Corporate Campuses • Public Sector and Government Facilities • Airports, Large Venues, and Event Sites • High-Density and Mission Critical Networks Certifications That Validate My Expertise • Certified Wireless Network Administrator (CWNA) • Certified Wireless Design Professional (CWDP) • Certified Wireless Security Professional (CWSP) • Certified Wireless IoT Solutions Administrator (CWISA) • CompTIA Network+ Tools and Technologies I Use • Ekahau • iBwave • Hamina Wireless • Cisco Catalyst Center • RUCKUS Smartzone • Enterprise WiFi, Security, and Performance Optimization What You Get When You Work With Me • Stronger WiFi coverage with fewer dead zones • Faster, more stable, and scalable wireless networks • Improved roaming, reduced interference, and better performance • Enterprise-grade designs aligned with industry best practices • Reliable communication, clear documentation, and on-time delivery If you are looking for an Experienced Wireless Network Engineer to design, optimize, audit, or upgrade your WiFi network, I am ready to deliver results-driven, high-performance wireless solutions.

I help ISPs, hosting providers, and businesses deploy, troubleshoot, and manage GPON networks, MikroTik routers, Linux servers, DNS, and email infrastructure. I have more than 10 years of hands-on experience operating real production environments, including an FTTH network serving over 500 active subscribers, MikroTik routing platforms, GPON OLT systems, SmartOLT automation, hosting infrastructure, and business email systems. Recently received a 5-star Upwork review for DNS, Email Infrastructure, and Technical Operations support, with client feedback highlighting quality, problem-solving, and technical expertise. My experience comes from real operational environments rather than lab-only setups. I work daily with customer provisioning, PPPoE services, network troubleshooting, DNS management, hosting infrastructure, and email delivery systems. ISP & Network Operations • MikroTik RouterOS Administration • GPON OLT Administration (ZTE C620 / C650) • SmartOLT Deployment & Automation • ONU Provisioning & Troubleshooting • PPPoE Services & Subscriber Management • VLAN Configuration, Routing & Switching • VPN & WAN Failover Solutions • ISP Customer Provisioning & Operations Linux, Hosting & DNS • Ubuntu Linux Administration • VPS & Hosting Management • cPanel & WHM Administration • DNS Troubleshooting & Migration • Cloudflare Administration • SSL Certificates • Website & Email Migration • WordPress Hosting & Troubleshooting Email Infrastructure • Microsoft 365 Administration • Google Workspace Administration • SPF, DKIM, DMARC & MX Records • Email Deliverability Troubleshooting • Email Routing & Forwarding • SMTP Configuration I focus on identifying root causes, solving technical issues efficiently, and building reliable solutions that work in real production environments. Available for GPON, MikroTik, SmartOLT, Linux, DNS, Email Infrastructure, Hosting, WordPress, ISP Operations, and Network Troubleshooting projects.

- Knowledge of principles of construction and operation of computer networks, application protocols. - Professional knowledge of operating systems Linux, FreeBSD, Windows, customization of servers for various tasks. - Knowledge and understanding of virtualization environments. - Perfectly mastered technologies of remote configuration and administration of objects, networks, servers, workstations, combining geographically dispersed objects in local networks. - Knowledge of computer and telecommunication equipment.

Helped businesses deploy Microsoft Teams Phone, Genesys Cloud CX, SIP Trunks, and AudioCodes SBC solutions, reducing telephony issues and improving call reliability for contact centers and enterprise environments. Specialized in Microsoft Teams Phone, Genesys Cloud CX, SIP Trunking, and AudioCodes SBC with experience delivering cloud voice and contact center solutions for SMB and enterprise customers. 🔹 Microsoft Teams & Voice Solutions ✔️ Microsoft Teams Direct Routing ✔️ Operator Connect & Calling Plans ✔️ Auto Attendants & Call Queues ✔️ PSTN Integration & SBC Configuration ✔️ Multi-provider SIP failover routing 🔹 VoIP & Contact Center Expertise ✔️ SIP, E1, PRI integrations ✔️ AudioCodes SBC configuration & troubleshooting ✔️ Genesys Cloud CX (BYOCC, SIP Trunks, Routing) ✔️ Call recording & voice security ✔️ VoIP troubleshooting (RTP, TLS, SRTP, QoS) 🔹 Cloud & Infrastructure ✔️ AWS & Azure deployments ✔️ Hybrid cloud architecture ✔️ VPNs, Firewalls, Load Balancers ✔️ DNS, SPF, DKIM, DMARC & Email deliverability ✔️ High-availability & secure network design

I'm Erick, a Software Engineer and System Administrator specializing in self-hosted solutions. I deploy and manage secure server environments to help businesses operate independently from third-party SaaS platforms. My expertise includes Linux server administration, Docker containerization, virtualization with Proxmox, and VPN configuration using WireGuard, Tailscale and OpenVPN. I set up, troubleshoot, and optimize self-hosted services, ensuring efficient and reliable infrastructures tailored to your needs. I also provide Twilio services to help businesses efficiently reach out to customers.