Real-world AI systems built for production. Explore detailed case studies, live telemetry simulations, technical constraints, and measurable impact metrics.
AM
Muhammad Ahmad Mujtaba
AI Engineer & founder
AI engineer with three years of experience building production AI systems: LLM fine-tuning, RAG pipelines, and full-stack ML backends with complex optimization layers. I've worked as the sole engineer on end-to-end projects for international clients, handling everything from raw data to deployed services. Currently completing a B.Sc. in Artificial Intelligence.
"I care about the parts that don't fit on a slide: handling sparse and messy data, cutting inference latency, indexing high-dimensional vectors, and shipping services that hold up under real load, not just notebooks that run once."
https://rezinx.co/portfolio
IHS: Intelligent Home Surveillance
YOLOv8-PoseTCNFastAPIRAGFlutterSupabase
Our flagship Final Year Project. Features real-time human pose-based fall detection, hazard recognition, child-safety monitoring, and a RAG-powered first-aid guidance assistant (powered by FAISS & BM25 vector search) hooked to Firebase FCM notifications.
Taxonomy-Driven RAG Recommender
QdrantEmbeddingsAsync microservicesPython
We build taxonomy-aware retrieval: embeddings organized around semantic hierarchies instead of raw objects, on a re-architected Qdrant layer. Typical result is a 3–5× latency reduction on large catalogs.
Capability
AI Profit Optimizer
LightGBMLP + SLSQPTweedieSTL Decomposition
A production price-elasticity optimization engine. Ingests catalog logs into Supabase, performs SKU demand forecasting using LightGBM, and passes predictions to a two-phase LP + SLSQP profit optimizer under margin floors and competitor guardrails. Includes champion/challenger WMAPE gating.
Enterprise Engine
Generative · NLP · Vision Models
LoRA/QLoRALLM Fine-tuningPyTorchGPU servers
Custom model deployments for specialized clients. Led LoRA and QLoRA fine-tuning workflows for custom domain-specific generative models, automated model training pipelines on DigitalOcean droplets and physical GPU nodes, and shipped custom natural language and vision pipelines.
Custom Pipeline
3–5×
Query Speedup
Embeddings re-structured around semantic taxonomies paired with Qdrant vector database layer optimization.
10×
Throughput Scaling
Transitioned monolithic systems to distributed microservices with async event loops.
LP+SLSQP
Dynamic Optimization
Implemented a two-phase optimizer that identifies profit peaks on forecast demand curves, strictly bounded by margin floors and competitor price caps.
Not a list of job duties. Each item is a real engineering bottleneck we hit, what we built to resolve it, and the performance output it generated.
RAG Retrieval Latency
3–5× faster queries
Embedding around semantic taxonomies instead of raw objects, plus a re-architected Qdrant layer.
3–5×latency reduction on large catalogs
Concurrency
Monolith → microservices
Async request handling lifted a hard concurrency ceiling without rewriting the models.
~10×concurrency headroom
Profit Optimizer · Illustrative
Finding the profit-maximizing price
The optimizer doesn't scan every price. A two-phase LP + SLSQP search explores a bounded band around each SKU's current price (shaded), under margin floors and competitor caps, to maximize profit, not revenue. Demand falls as price rises; profit peaks where volume and margin trade off, and turns negative below unit cost.
IHS is an end-to-end safety platform combining deep-learning video analytics, an optimized mobile app, and a desktop control panel. Built specifically to protect elderly individuals and children, the system continuously analyzes local camera streams to detect emergency events like falls and child-hazard proximity in real time.
System Architecture
A pipeline combining YOLOv8-Pose & a Temporal Convolutional Network (TCN) for biomechanically informed action recognition. Features a background-running DeviceMonitorManager handling multiple RTSP/HTTP streams asynchronously, interfacing with a hybrid FAISS + BM25 RAG first-aid advisor and a Firebase Cloud Messaging push system.
Fall-Detection Pipeline
01
Pose EstimationYOLOv8s-Pose processes frames in real-time, extracting 17 distinct COCO coordinate keypoints per detected person.
02
Feature EngineeringApplies hip-centered normalization, calculates joint angles, frame-to-frame velocity vectors, and trunk tilt degrees to compile a 61-dimensional feature vector.
03
TCN ClassifierA 3-layer residual Temporal Convolutional Network (TCN) performs temporal reasoning over sliding 30-frame windows, executed every 10 frames to optimize compute.
04
Heuristic FSMA rule-based biomechanical Finite State Machine monitors absolute trunk angle, hip height relative to floor markers, center-of-gravity velocity, and rapid inversion events.
05
Score BlendCombines predictions via a weighted score (70% TCN temporal prediction + 30% Heuristic biomechanics) gated by inversion detection constraints to minimize false triggers.
06
Sticky LockA state hysteresis lock prevents rapid oscillation between active fall and normal states, stabilizing alerts under noisy visual feeds.
Key Capabilities
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Hybrid classification blending temporal model layers with strict rule-based biomechanics.
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Configure automatic alarm triggers when individuals remain on the floor past a safety threshold.
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OpenVINO INT8 quantized YOLOv8 object detector tracking hazard items like knives, fire, and stove status.
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Skeleton-ratio based age estimation to warn caregivers when toddlers approach hazard zones.
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DeviceMonitorManager feeds video streams independently of active app views for robust uptime.
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Local RAG adviser with FAISS vector indexing and BM25 search over medical manuals, powered by Groq.