Available for Engineering Roles in UK & Remote

Engineering High-Performance Systems with Python & Modern Web

Hi, I'm Sunil Dennis — a Software Developer with 7 years of professional experience specialising in Python and full-stack application development across Django, DRF, React, and TypeScript.

7+ Years Exp.

MSc Sheffield Hallam

19K+ YouTube Audience

UK Sheffield, S2

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sunildennis@sheffield:~

$ cat profile.json

{
  "name": "Sunil Dennis",
  "title": "Full Stack Software Engineer",
  "location": "Sheffield, United Kingdom",
  "primary_stack": [
    "Python", "Django", "DRF",
    "TypeScript", "React", "FastAPI"
  ],
  "infrastructure": [
    "Docker", "DigitalOcean", "PostgreSQL", "Nginx"
  ],
  "current_focus": "Distributed systems & Cloud Architecture"
}

// Open for Full-Stack, Backend & Python roles

Background & Approach

Architecting Software with Purpose

Engineering resilient applications with a focus on maintainability, high concurrency, and real business value.

Full-Stack Engineering

Over 7 years designing, building, and maintaining scalable production applications across backend, frontend, APIs, databases, and deployments with ownership across the full software development lifecycle.

IT Project Management

Currently pursuing an MSc in IT Project Management at Sheffield Hallam University, blending software engineering craftsmanship with Agile, sprint governance, and risk mitigation.

Educator & Tech Cookie Founder

Founded Tech Cookie, reaching a 19K+ YouTube subscriber audience with deep-dive technical tutorials, programming masterclasses, and software architecture breakdowns.

DevOps & Deployment

Hands-on production deployment experience utilizing Docker containers, DigitalOcean droplets, Gunicorn application servers, and reverse-proxy Nginx configurations on Linux (Ubuntu).

Core Competencies

Skills & Tech Stack

A deep, battle-tested toolset across backend architecture, modern frontend frameworks, and cloud infrastructure.

Backend & API Development

Python Django Django REST Framework FastAPI Node.js Celery & Redis Queues JWT & OAuth2 OpenAPI / Swagger

Frontend & UI Engineering

React.js TypeScript JavaScript (ES6+) HTML5 & CSS3 Tailwind CSS Bootstrap 5 Responsive UI / UX

Databases & Caching

PostgreSQL MySQL Redis Cache MongoDB SQLite Data Modeling & ORM

Cloud, DevOps & Security

Docker & Compose DigitalOcean Droplets Nginx Reverse Proxy Gunicorn WSGI Ubuntu / Kali Linux Git & GitHub Actions Web Security (OWASP, Nmap)

Featured Work

Engineered For Scale

Production-grade applications highlighting backend architecture, async processing, and modern UI.

Flagship API Service

Nexus Booking Engine

An enterprise appointment booking and schedule management API designed for zero-conflict booking. Features slot concurrency locking with Redis, Celery background notification queues, and granular timezone conversions.

Concurrency-safe slot reservation with Redis locks.
Asynchronous email confirmations & reminders via Celery workers.
Comprehensive Swagger / OpenAPI interactive documentation.

Python Django REST Celery Redis PostgreSQL Docker

Full-Stack Platform

Pulse CMS & Page Builder

A modular headless Content Management System with a visual drag-and-drop page builder. Built for rapid content generation, automatic SEO metadata generation, role-based authorization, and media management.

Block-based content tree rendered dynamically on frontend.
Role-based access control (Admin, Editor, Contributor).
Production Nginx & Gunicorn configuration for DigitalOcean droplets.

Python Django React TypeScript Tailwind CSS DigitalOcean

High-Concurrency Platform

Swift Commerce Engine

A high-performance e-commerce product catalog, inventory manager, and checkout engine. Features multi-tier Redis caching, idempotency keys for payment transactions, and sub-100ms response latencies.

Multi-tier product caching with automatic Redis invalidation.
Idempotent checkout transaction and order state machine.
Containerized environment ready for multi-container deployment.

Python Django / FastAPI React PostgreSQL Redis Docker

Career & Academic Path

Experience & Education

A trajectory of technical delivery, community impact, and strategic project management.

2026 — Present

Postgraduate Degree

MSc in Information Technology Management

Sheffield Hallam University • Sheffield, United Kingdom

Specializing in enterprise IT governance, Agile/Scrum project management, cloud infrastructure planning, risk evaluation, and scalable system delivery.

03/2021 — 11/2025

Commercial Experience

Full Stack Developer

MMloqz (MM Låsesmed Group) • Hyderabad / Remote

Owned end-to-end development of 10+ production web applications. Coordinated technical delivery across a 7-developer team, distributing tasks and reviewing PRs. Architected scalable backend systems with Django/DRF, responsive React/TypeScript interfaces, and managed deployments using Nginx, Gunicorn, and DigitalOcean.

12/2017 — 05/2025

Community & Education

Founder & Technical Developer

Tech Cookie Community • thetechcookie.com & YouTube

Founded and technically developed Tech Cookie, building the platform and creating programming & systems content reaching a 19K+ YouTube subscriber audience. Authored tutorials and demonstrations covering Python, APIs, web architecture, and emerging tech.

07/2018 — 02/2021

Freelance

Software Developer

Independent Contractor

Delivered custom web applications using Python, Django, and modern JavaScript. Built cross-platform mobile prototypes with React Native and implemented client-tailored automation workflows.

06/2014 — 04/2018

Undergraduate Degree

B.Tech in Electronics & Communication Engineering

Aditya Engineering College • India

Core foundation in computer systems, algorithms, microprocessor programming, and hardware-software communication interfaces.