Waseem Sajjad

Robotics Engineer

Fiverr • Freelance

May 2026 - Present • 5 mos

Delivering end-to-end robotics projects for international clients, from simulation to real hardware. 39 five-star reviews on Fiverr (Level 2) and 100% Job Success on Upwork. Selected projects: - Autonomous drone on NVIDIA Jetson Orin NX with Intel RealSense D435i, Unitree 4D LiDAR and MicoAir743 flight controller. Sensor fusion and AI-based target tracking for obstacle-aware flight. - Autonomous mobile robots: multi-sensor navigation with LiDAR SLAM, VINS-Fusion and LIO-SAM for GPS-denied environments, switching between local SLAM and GPS corrections for indoor-outdoor operation. - Pipe-inspection robot: IMU/GPS fusion, field trials and a 3D inspection dashboard in Python. - Air-water transmedium UAV: navigation architecture, EKF sensor fusion and GNSS-denied navigation design. - 6-DOF robot arm: numerical inverse kinematics and state-space feedback control for an RRR + spherical-wrist manipulator with robust trajectory tracking. - Delta robot: deep-learning inverse kinematics (IKNet) for high-speed pick-and-place. - Fairino V5 collaborative arm programming, machine-vision integration and robot simulation in Gazebo, Isaac Sim, MuJoCo and CoppeliaSim. - Embedded firmware on STM32, ESP32, AVR and PIC for sensors, actuators and robot controllers.

Robotics Engineer

Tech • Full time

Dec 2023 - Present • 2 yrs 10 mos

CoLeading robotics and automation development for in-pipe inspection systems and industrial motion control, from concept and proof of concept to field trials and client delivery. Torpedo - Sewer Pipe Inspection Robot - Developing an autonomous in-pipe inspection robot for sewerage networks, with a free-flow unit and a wheeled variant for dry and low-flow pipes. - Built IMU and GPS sensor fusion for in-pipe localization, velocity estimation and GIS-referenced output of inspection data. - Developed a real-time Python inspection dashboard with 3D pipe visualization and synthetic data generation for testing. - Planned and ran field trials, and defined the v2.0 roadmap: misconnection detection, pipe-depth and stress testing, NB-IoT/LoRa communication and AI-based anomaly flagging. - Prepared technical proposals, statements of work and investor presentations. Rising Main PIG - Oil Pipeline Inspection - Developing a pipeline inspection gauge (PIG) for in-line inspection of oil pipelines. - Responsible for sensor integration, onboard data logging and position tracking along the pipeline. Industrial Automation - PROFINET and IO-Link - Engineered a Siemens S7-1200/1500 and SINAMICS V90 servo demonstration rig comparing PROFINET IRT and IO-Link encoder feedback across three axes, including a linear lead-screw axis. - Evaluated encoder protocols (PROFINET, SSI, IO-Link) and selected motion components such as zero-backlash couplings for precise servo feedback. - Delivered technical demonstrations and presentations to clients and partners.

Robotics Engineer - Research Assistant

LinkedIn • Full time

Apr 2026 - Jul 2026 • 3 mos

Research on autonomous UAVs and drone swarms using ROS 2 and PX4. - Built a secure 5-node LoRa mesh for drone swarm communication: custom TDMA flooding protocol with AES-128-GCM encryption on ESP32 + SX1278, including smart relay suppression. - Developed decentralized swarm formation control (line, grid, wedge, diamond) in Python and C++. - Integrated PX4 with ROS 2 over uXRCE-DDS and ran multi-drone SITL simulations. - Built RF and swarm simulators with realistic packet loss and signal degradation to validate the protocol before flight. - Validated perception, planning and control in simulation and real flight tests.