Open to opportunities

Simon Paul Allen

@simonpaulallen

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Senior full-stack engineer specializing in scalable web, streaming, and e-commerce systems.

United Kingdom

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What I'm looking for

I seek a senior engineering role building scalable web or streaming platforms with strong CI/CD, collaborative teams, and opportunities to improve performance and user experience.

I am a Senior Fullstack Engineer with extensive experience building scalable web, streaming, and e-commerce platforms using PHP, Python, Node.js, React and AWS. I have delivered measurable improvements in CMS efficiency, payment success rates, and platform performance while collaborating with distributed teams.

At Warner Bros. Discovery I optimized streaming performance, integrated PayPal/Stripe/Adyen with 99.5% transaction success, and implemented AWS serverless solutions improving processing speed and scalability. I also led projects that reduced manual tagging by 70% and increased metadata accuracy by 80% for sports video timelines.

Previously, I drove full-stack development at ClearSky Logic, maintained CI/CD pipelines, mentored junior developers, and shipped e-commerce features that boosted user engagement and responsiveness. I prioritize clean code, measurable outcomes, and reliable collaboration to consistently meet sprint goals.

Experience

Work history, roles, and key accomplishments

Senior Staff Software Engineer

Warner Bros. Discovery

Jun 2023 - Aug 2025 (2 years 2 months)

Enhanced HBO Max and Discovery+ streaming platforms, integrating PayPal/Stripe/Adyen with 99.5% transaction success and improving CMS efficiency up to 25% while implementing AWS serverless architecture to boost scalability.

Python AWS Lambda S3 DynamoDB API Development Serverless CI CD

Senior Fullstack Developer

Cleansky Logic Limited

Oct 2019 - May 2023 (3 years 7 months)

Led full-stack development for web and e-commerce platforms, delivered client features that increased engagement and improved responsiveness ~10%, maintained 15–20 bug fixes per sprint, and established CI/CD pipelines.

PHP Python React MySQL CI CD REST APIs Performance Optimization Mentoring

Junior Web Developer

Clearview Intelligence

Feb 2019 - Jul 2019 (5 months)

Built responsive dashboards and real-time data pipelines to convert traffic data into actionable insights, delivering web modules that improved internal monitoring and team efficiency.

HTML CSS JavaScript Python Data Visualization Frontend Development Collaboration

Education

Degrees, certifications, and relevant coursework

Napier University

Bachelor of Computer Science, Computer Science

2015 - 2019

Grade: 3.0

Activities and societies: Coursework in Web Technologies, Database Systems, Software Development, Full-Stack Development, E-commerce Platform Development, Python & PHP programming, and Cloud Computing & DevOps.

Completed a Bachelor in Computer Science with focus on full-stack development, e-commerce systems, and cloud/DevOps coursework.