Hi, I'm Billy King

Software Developer & AI Engineer

Highly motivated Software Developer proficient in Python and modern front-end technologies such as React and GraphQL. Passionate about leveraging AI/ML APIs and techniques to build innovative, scalable solutions across the full stack with contributions to open-source projects and an app released on the Apple App Store.

About Me

I'm a highly motivated Software Developer and AI Engineer based in Essex, United Kingdom, with extensive experience across the full technology stack. Currently pursuing my BSc in Computer Science at the University of Essex through a part-time remote program, I combine academic rigour with hands-on professional experience.

My professional journey includes roles as an AI Tutor at xAI working on the Grok LLM, DevOps Engineer managing cloud infrastructure for 30+ client applications, and Software Developer contributing to high-volume trading platforms. I'm passionate about leveraging AI/ML APIs and techniques to build innovative, scalable solutions.

With expertise spanning from frontend React applications to backend FastAPI services, cloud infrastructure management, and AI model integration, I bring a comprehensive understanding of modern software development practices. My open-source contributions and published Mac App Store application demonstrate my commitment to building quality software solutions.

Full-Stack Development

React frontends to FastAPI backends

AI/ML Integration

LLM APIs and local inference

Cloud Infrastructure

AWS/Azure deployment & DevOps

AI Tutor (FTC)

xAI
April 2025 – October 2025

Performed data annotation tasks on xAI's Grok, an LLM that provides SOTA performance in numerous tasks.

  • Evaluated the quality of Grok's responses to secure alignment and mitigate bias
  • Engaged in team-based workloads requiring constant and consistent communication
  • Contributed to RLHF training projects, exceeding performance expectations
LLM RLHF Data Annotation AI Alignment

DevOps Engineer

PC-IT Support
February 2024 – March 2025

Engineered CI/CD pipelines and managed scalable cloud infrastructure for multiple client applications.

  • Engineered CI/CD pipelines (GitHub Actions/Jenkins) reducing cloud service deployment times
  • Developed Python/PowerShell automation scripts, eliminating manual backend tasks
  • Architected & managed scalable AWS/Azure infrastructure for 30+ client applications
  • Implemented Prometheus/Grafana monitoring, decreasing incident diagnosis time
  • Modernised legacy systems to cloud-native architectures, enhancing scalability & reducing costs
AWS Azure Terraform Docker CI/CD Python PowerShell Prometheus Grafana

Software Developer

Biton System Consultants
August 2023 – December 2023

Contributed to Python/Flask backend development for a high-volume trading platform, focusing on performance optimisation.

  • Contributed to Python/Flask backend development for high-volume trading platform
  • Optimised critical PostgreSQL/MySQL queries to enhance client experience
  • Translated client requirements into robust development solutions
  • Instituted code review & documentation standards to improve code quality
Python Flask PostgreSQL MySQL Performance Optimisation

System Engineer

PC-IT Support
May 2023 – August 2023

Managed hybrid infrastructure ensuring performance and availability for enterprise users.

  • Managed hybrid infrastructure ensuring performance & availability for 600+ users
  • Implemented automated backup & disaster recovery solutions for critical data
Infrastructure Management Backup Solutions Disaster Recovery

Skills & Technologies

Programming Languages

Python C# (.NET Core) JavaScript TypeScript HTML/CSS

Frontend Development

React GraphQL REST APIs UI/UX Principles Safari Extensions

Backend Development

FastAPI ASP.NET Core Flask PostgreSQL MySQL MongoDB

Cloud & DevOps

AWS (EC2, S3, RDS, Lambda) Azure (VMs, App Service) Terraform Docker CI/CD GitHub Actions Jenkins

AI & Machine Learning

OpenAI API Integration Local Inference (MLX, llama.cpp) PyTorch HuggingFace Transformers CUDA RLHF Training

Development Concepts

SDLC Agile Methodology OOP System Design Code Quality & Testing Monitoring (Prometheus/Grafana)

Featured Projects

QueryHop - Safari Search Redirector

Open-source Safari extension for macOS to redirect searches to preferred engines. Released on the Mac App Store with configuration management capabilities.

Safari Extensions macOS JavaScript

Kings Logistics Services - Live Delivery Tracker

Architected and deployed a FastAPI server with real-time delivery tracking capabilities using modern cloud infrastructure.

FastAPI Redis Oracle Cloud Terraform

MLX Batched KV Cache

Educational exploration of Batched KV Caching using Apple's MLX framework, demonstrating ML engineering principles and optimisation techniques.

Apple MLX Python Machine Learning

Get In Touch

Let's Connect

I'm always interested in discussing new opportunities, collaborating on projects, or just having a chat about technology and AI.

billymk777@gmail.com
+44 7763 050410
Essex, United Kingdom
University of Essex