Hire the Best TCP/IP Specialists

I help companies design, build, and scale industrial-grade IoT platforms — from edge devices to cloud and real-time dashboards. With 10+ years of experience, 36+ projects, and 35,000+ connected devices, I specialize in delivering production-ready IoT systems that are scalable, secure, and reliable in real-world environments. 🔧 What I Do 🧠 IoT Architecture (End-to-End) • Edge → Gateway → Cloud → Dashboard design • Multi-tenant IoT platforms • High-throughput telemetry pipelines • Real-time monitoring & alerting systems ⚙️ Industrial & Edge Integration • Protocols: MQTT, OPC UA, Modbus (RTU/TCP), DNP3, IEC104, CAN/J1939 • PLC, SCADA, RTU integrations • Edge computing (Python, Docker, Linux-based gateways) • Offline-first and low-bandwidth architectures ☁️ Cloud IoT (AWS & Azure) • AWS IoT Core, Lambda, API Gateway, DynamoDB, Timestream • Azure IoT Hub, Event Hub, IoT Edge, Digital Twins • Secure device onboarding (X.509, JITP/JITR) • Scalable ingestion (Kafka/Kinesis-based pipelines) 📊 Dashboards, Data & Analytics • ThingsBoard (CE & PE) – custom dashboards, rule chains • Grafana, InfluxDB, Timeseries analytics • Real-time event processing & anomaly detection 🔄 Deployment & DevOps • Docker, Kubernetes, CI/CD pipelines • OTA updates & device lifecycle management • Production monitoring, logging, and scaling 💡 Key Strengths ✔️ Designed systems handling thousands of devices & high-frequency data ✔️ Strong in Edge + Cloud combined architecture (not just one side) ✔️ Experience with industrial environments (Oil & Gas, Energy, Fleet, Smart Infra) ✔️ Focus on performance, reliability, and long-term scalability ✔️ Able to translate business problems into technical IoT solutions 🤝 Let’s Build Something Scalable If you need someone who can own your IoT system end-to-end — from architecture to deployment — I can help. 👉 Message me with your use case, and I’ll propose a clear, scalable solution approach.

Most embedded projects stall at the same points: firmware that works on a breadboard but breaks on the real board, PCB layouts that pass DRC but fail signal integrity, or a design that can't be handed off to a manufacturer without a full redesign. I close those gaps. I design multi-layer PCBs in KiCad with production constraints built in from the start. Layer stackup, impedance control, DFM rules for JLCPCB/PCBWay, and a BOM sourced from LCSC before layout even begins. On the firmware side, I write C/C++ for ESP32, STM32, and RP2350 targets using FreeRTOS, with drivers built over SPI, I2C, UART, and CAN. I've shipped USB HID firmware running at 1000 Hz, closed-loop PID motor control, MPPT solar charge logic, and MQTT-based IoT integration. When hardware and firmware have to work together under tight constraints power budget, real-time deadlines, physical form factor, that's where I do my best work. Contributed a linker script fix to the official STM32CubeF4 HAL repository (merged PR #201).

I have been working in the field of embedded systems for about 10 yrs. With embedded systems, i mean both Microcontrollers and application processors that are used to build Single Board Computers (SBC). I have worked with many microcontrollers like PIC, AVR, STM32F1xx, STM32F2xx, STM32F4xx, STM32F0xx, LPC1768, TIVA-C, MSP430, OMAP l138, ESP32, ESP8266 and DA1458x. Also, i depend in many projects on SBC like raspberry pi, beagle board, orange pi, nano pi and tiny rex. I can use multiple languages for programming according to the platform used in the project. I have a great experience in programming with C, C++, embedded C, python, bash and perl. In addition to the field of embedded systems, i am very curious with security in any project i work in. I have a master degree in Cryptography in broadcast encryption. I tries always to follow security mechanisms in my solutions. I can afford security solution for the projects to keep data safe from unauthorized disclosure specially in network projects or projects that requires TCP communication.

I specialize in solving networking problems that traditional software developers rarely encounter. Modern infrastructure is no longer just about writing code or configuring servers; t's about understanding how applications, operating systems, protocols and networks interact. That's where I work. I design, build and troubleshoot secure, high-performance infrastructures where backend engineering, Linux administration and advanced networking come together. Whether the challenge involves VPN deployments, routing, DNS, TLS, packet analysis, distributed systems or backend services, I enjoy finding the root cause and building solutions that are reliable, maintainable and practical. My strongest expertise is modern Internet infrastructure. I regularly work with Linux, OpenWrt, WireGuard, Sing-box, Xray-core, secure tunneling, advanced proxy architectures, Deep Packet Inspection (DPI), traffic analysis, routing, NAT, policy-based routing, reverse proxies, DNS, TLS, HTTP/2, HTTP/3, QUIC and Wireshark. I also have experience building censorship-resistant networking solutions and understanding how modern protocols behave in restrictive or complex network environments. Beyond networking, I develop backend services, APIs and automation tools using Node.js, Express, JavaScript and SQL technologies including PostgreSQL, MySQL, SQLite and MongoDB. I'm comfortable reading, understanding, debugging and improving existing codebases, integrating new features, optimizing performance and helping maintain production systems. I enjoy projects that require looking at the complete picture rather than a single technology. Whether the issue originates from application code, a database query, TLS negotiation, DNS resolution, container networking, routing or packet-level behavior, I investigate the entire stack until the root cause is identified. My approach -> understand the problem, communicate clearly, build solutions that last, and leave clients with infrastructure they can confidently operate after the project is complete. If your project involves networking, Linux infrastructure, VPN technologies, backend development, protocol analysis, traffic engineering, performance optimization or complex troubleshooting, I'd be happy to help.

When systems break under real-world constraints — unstable networks, missing documentation, mixed hardware — I step in to diagnose and fix them. I specialize in: • Systems integration (IoT, edge devices, multi-protocol environments) • Real-time streaming (WebRTC / RTSP / low-latency pipelines) • Performance & storage engineering (high-throughput, large-scale systems) • Distributed systems & Go backend (control-plane, metadata services, cluster coordination) Selected work: • Airport perimeter security platform Integrated fiber optic vibration sensors, IP cameras, alarms, and lighting into a unified real-time alert platform. → Received hands-on training from Fibersonics engineers on sensor physics and signal analysis — applied this to configure per-zone detection parameters, achieving near-zero missed detections with low false positives across outdoor conditions → Debugged and stabilized WebRTC/RTSP streaming through packet-capture analysis — no documentation available; resolved by reading ZLMediaKit source code and tracing protocol negotiation → Deployed and in active use • Offline mesh-based classroom system Built ESP32-C6 mesh network for student response collection in zero-WiFi environments. → Power-optimized to ~1 month battery life (4000mAh) in testing → Designed full stack: embedded firmware + desktop management + cloud analytics • Offline canteen management system Implemented custom TCP server on Android with a Windows C++ Qt client over direct ethernet. → Ensured data integrity for large transfers in a network-restricted environment with no external infrastructure → Deployed and in active use • Metadata control-plane for disaggregated database (major state-owned bank) Core developer of the Go-based metadata/control-plane service that enabled compute-storage separation on a Greenplum/PostgreSQL-based distributed database. → Centralized TB-scale metadata — transactions, sessions, locks, invalidation state — previously trapped inside local compute nodes → Built on FoundationDB (core KV backend), etcd (cluster coordination, leader election), and a custom RPC layer → Implemented session lifecycle, distributed locking, deadlock detection, and invalidation message pipeline • Disaggregated storage system (China Construction Bank) Core developer of the disaggregated storage module managing thousands of PBs across multi-cloud object storage (AWS S3, Alibaba Cloud, Huawei Cloud, Tencent Cloud) behind a ~1TB local cache. → Designed query-driven prefetching and segmented caching of hot data → Cold start ~20x slower than SSD; warm cache performance on par with SSD • Adaptive compression engine (YMatrix time-series database) Designed automode system that dynamically detects data characteristics across stream segments and selects optimal encoding chains (zigzag, simple8b, deltadelta, Gorilla2, lz4/zstd). → Deployed in production — patented encoding chain design Prior to the above, I spent 6 years as Lead Engineer at FreeWheel (a US media-tech company, acquired by Comcast), building Kubernetes-based microservices platforms and cutting fault localization time from over a day to under a minute using Istio service mesh and distributed tracing. Before that, I was a Technical Expert at Alibaba Cloud, where I extended a database proxy to support the PostgreSQL protocol (read/write splitting, failover reconnection) and built a stability engineering system for RDS PostgreSQL that kept the service running through 2021 Double 11 — one of the world's highest-traffic e-commerce events. I've diagnosed production issues across Go, C++, and distributed systems — including a Golang memory leak traced through Prometheus metrics to a misconfigured HTTP client, and C++ performance bottlenecks in deployed systems. My approach: correlate monitoring data with business operations to narrow scope before touching the code. I've published source-level analysis of Prometheus internals on InfoQ. Domain experience with counter-drone detection systems — participated in field testing and evaluation of RF detection and optical tracking platforms, with firsthand understanding of operational scenarios, detection requirements, and alert workflow needs. If you're dealing with: • unstable integrations • streaming issues (WebRTC / RTSP) • hardware + software systems not working together • performance problems in production —I can help you find and fix the root cause. Tech stack: Systems Integration Engineer | Edge AI, Video, Embedded & Distributed Systems

I'm a VoIP, Network & Security Engineer with over 10 years of hands-on experience building, managing, and securing enterprise and carrier-grade infrastructure. I've worked in the core network of one of Bangladesh's largest ISPs — designing solutions that handle real scale, real traffic, and real uptime requirements. I specialize in the full range of VoIP platforms — from SMB-focused systems like 3CX and FreePBX to carrier-grade switching and billing platforms including PortaOne (PortaSwitch, PortaBilling) and Telinta (TeliCore). If you're a VoIP provider, MVNO, or wholesale carrier needing a scalable multi-tenant platform, class-5 softswitch, or prepaid/postpaid billing setup, I can help you design, deploy, and maintain it. I also provide full US telecom regulatory compliance support — including STIR/SHAKEN implementation for call authentication and 10DLC (10-Digit Long Code) registration for A2P SMS campaigns. Whether you're a CPaaS provider, VoIP operator, or business needing compliant SMS messaging, I handle brand registration, campaign vetting, TCR submission, and carrier approval — keeping you out of filtering and in line with FCC and CTIA requirements. Beyond voice, my expertise covers the full network stack: BGP/OSPF routing, MPLS, firewall hardening with Fortigate and Sophos, IPsec/GRE VPNs, and cloud deployments on AWS and Azure. What you can expect: clear communication, documented deliverables, and no surprises. I scope projects carefully, flag issues early, and stay available through go-live and beyond. Telecom platform support: PortaOne (PortaSwitch · PortaBilling · PortaSIP) · Telinta (TeliCore softswitch · hosted VoIP · calling card billing) · FusionPBX · Asterisk · FreePBX · 3CX — from initial provisioning and trunk configuration to billing plan setup, DID routing, and ongoing admin. Regulatory & compliance: STIR/SHAKEN (SHAKEN attestation, STI-CA enrollment, signed calls) · 10DLC A2P SMS (TCR brand & campaign registration, carrier vetting, CSP setup) · FCC telecom compliance · SIP fraud prevention · call authentication best practices.