Ahmad Abdullah

• Results-driven Senior Full-Stack Engineer with 5+ years of production experience building scalable web applications, distributed backend systems, and AI-powered platforms in fast-moving startup environments.
• Deep expertise in React.js, Next.js, and TypeScript with a proven track record of delivering high-performance frontend architectures, component systems, and data-heavy dashboards used by thousands of users.
• Extensive backend and infrastructure experience spanning FastAPI, Springboot , asynchronous job processing (Celery, RabbitMQ), Redis caching, MongoDB, Elasticsearch, and cloud deployments on AWS and Kubernetes.
• Hands-on AI/ML systems experience: multi-provider LLM orchestration (OpenAI, Anthropic, Mistral, Grok), diffusion-based image generation, FFmpeg video pipelines, and model inference at scale.
• Product-oriented engineer with CTO-level platform oversight, strong ownership mindset, and demonstrated ability to take systems from ambiguous problem statements through design, implementation, deployment, and operations.

PROFESSIONAL EXPERIENCE

Senior Software Engineer (Backend, AI & Infrastructure)

OracleGen AI | Remote | Jan 2026 – Present

• Architected and built FastAPI-based backend services powering AI-driven automation workflows, supporting multi-tenant SaaS operations with high throughput requirements.
• Integrated and orchestrated multiple LLM providers (GPT-4, Claude Sonnet 4.5, Mistral, Grok) into unified inference APIs with fallback routing and latency optimization.
• Built an AI video generation pipeline using FFmpeg in Python, enabling automated content creation from text prompts with configurable resolution, duration, and format outputs.
• Designed asynchronous AI job pipelines using Celery and RabbitMQ for scalable inference processing, background enrichment, and structured data processing workflows.
• Implemented browser automation and data-collection systems using Playwright for real-time HTML-PNG design generation and content ingestion at scale.
• Owned full system lifecycle: design, implementation, deployment to AWS, monitoring with structured logging, and production debugging across distributed services.

Senior Engineer → CTO (Platform & Full-Stack Oversight)

Quixess Commerce | USA (Remote) | 2022 – 2026

• Led full-stack development for a large-scale e-commerce automation SaaS platform, overseeing architecture decisions across frontend, backend, and cloud infrastructure.
• Designed and implemented payment flows with Stripe and PayPal, incorporating idempotency patterns to ensure transaction integrity and prevent duplicate charges across retry scenarios.
• Built dashboards for product publishing, inventory management, and order workflows using React, TypeScript, and Redux Toolkit — handling real-time data updates and complex state management.
• Integrated a custom-trained Claude-based model tailored to product context, improving listing accuracy and marketplace compliance automation.
• Architected distributed microservices deployed on Kubernetes, improving reliability and observability across payment, inventory, and fulfillment services.
• Led engineering teams, conducted architecture reviews, and drove cross-functional AI strategy initiatives to align engineering with business goals.

Senior Consultant Engineer (Frontend & Backend Supervision)

Quixess Socials | Remote | Aug 2025- Dec 2025

• Provided consultations for the frontend and backend. Team on backend-centric social media automation systems with API-driven architectures handling scheduling, publishing, analytics, and third-party integrations including Meta APIs.
• Help Developed data-heavy UI components for analytics dashboards, mentoring engineers and improving frontend development standards across the team.
• Ensured performance, reliability, and maintainability of production APIs serving high-volume automation workloads.

Backend Engineer

BorderCart — International E-Commerce Shipping Platform (bordercart.com) | June 2025- Feb 2026

Engineered an e-commerce solution enabling Nigerians to shop internationally from Amazon, eBay, Walmart, BestBuy, and other US retailers by solving cross-border shipping challenges.

Implemented a backend with Java Springboot , MongoDB, and Redis caching for high-performance product search and catalog browsing.

Built Elasticsearch-powered search indexing for real-time product discovery across millions of SKUs.

Designed idempotent payment and shipping workflows using Paystack to prevent duplicate transactions and ensure order consistency. Deployed containerized services with Docker and managed CI/CD pipelines for rapid iteration.

KEY PROJECTS & USE CASES

AI Video Generation Pipeline — OracleGen

Implemented an end-to-end AI video generation backend service using FFmpeg in Python, integrated with diffusion-based image generation and LLM-driven script generation. The pipeline accepts text prompts, generates scene sequences, renders frames, and composes final MP4 outputs with configurable resolution, aspect ratio, and audio overlay. Used Celery with Redis broker for queue management, enabling parallel rendering and progress tracking.

E-Commerce Payment Infrastructure — Quixess (Live)

Designed resilient payment architecture supporting Stripe and PayPal with strict idempotency guarantees. Implemented webhook handlers, retry logic with exponential backoff, and transaction state machines to ensure exactly-once processing. Built real-time payment status dashboards for merchants using React and WebSocket updates.

Java System Design — Enterprise Patterns – BorderCart(Live)

Applied enterprise Java patterns including Singleton, Factory, and Dependency Injection for service layer architecture. Implemented concurrency control with Java Executors and CompletableFuture for async task orchestration. Designed RESTful APIs with Spring Boot following SOLID principles and clean architecture, with JUnit/Mockito for comprehensive test coverage. Experience with JVM tuning, garbage collection optimization, and Spring Security for OAuth2/JWT authentication flows.

EDUCATION

B.Sc. Microbiology — University of Ilorin, Nigeria | 2019 – 2024 | CGPA: 4.46 / 5.0

CERTIFICATIONS & TRAINING

• Full-Stack Web Development Bootcamp — Udemy
• Meta / Facebook Lead Generation Certification
• CPD Certification (Professional Development)
• IELTS Band 7 (CEFR C1) — Professional English Proficiency

Graduate in Microbiology (4.46)– University of Ilorin