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I am a passionate, motivated and highly adaptable engineer with a wealth of experience in front- and back-end programming, architecture for scalable back-ends (from APIs to fully-featured web apps), and managing rock-solid production in infrastructure. Above all, I value best engineering practice, including CI/CD, secure design and test-driven development. In my most recent roles, I have led web application feature development and contributed directly through hands-on programming, primarily with PHP (Slim API, Symfony), Python (FastAPI, Django) and TypeScript (React). I have championed serverless AWS in infrastructure as code tools, and have also led a data engineering team; during this time I delivered a greenfield data platform that transformed the company’s data analytics function, again leveraging AWS services, including S3, Kafka, Glue, Athena and Redshift.…I am a passionate, motivated and highly adaptable engineer with a wealth of experience in front- and back-end programming, architecture for scalable back-ends (from APIs to fully-featured web apps), and managing rock-solid production in infrastructure. Above all, I value best engineering practice, including CI/CD, secure design and test-driven development. In my most recent roles, I have led web application feature development and contributed directly through hands-on programming, primarily with PHP (Slim API, Symfony), Python (FastAPI, Django) and TypeScript (React). I have championed serverless AWS in infrastructure as code tools, and have also led a data engineering team; during this time I delivered a greenfield data platform that transformed the company’s data analytics function, again leveraging AWS services, including S3, Kafka, Glue, Athena and Redshift.

Clark Sirl

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I am a passionate, motivated and highly adaptable engineer with a wealth of experience in front- and back-end programming, architecture for scalable back-ends (from APIs to fully-featured web apps), and managing rock-solid production in infrastructure. Above all, I value best engineering practice, including CI/CD, secure design and test-driven development. In my most recent roles, I have led web application feature development and contributed directly through hands-on programming, primarily with PHP (Slim API, Symfony), Python (FastAPI, Django) and TypeScript (React). I have championed serverless AWS in infrastructure as code tools, and have also led a data engineering team; during this time I delivered a greenfield data platform that transformed the company’s data analytics function, again leveraging AWS services, including S3, Kafka, Glue, Athena and Redshift.…I am a passionate, motivated and highly adaptable engineer with a wealth of experience in front- and back-end programming, architecture for scalable back-ends (from APIs to fully-featured web apps), and managing rock-solid production in infrastructure. Above all, I value best engineering practice, including CI/CD, secure design and test-driven development. In my most recent roles, I have led web application feature development and contributed directly through hands-on programming, primarily with PHP (Slim API, Symfony), Python (FastAPI, Django) and TypeScript (React). I have championed serverless AWS in infrastructure as code tools, and have also led a data engineering team; during this time I delivered a greenfield data platform that transformed the company’s data analytics function, again leveraging AWS services, including S3, Kafka, Glue, Athena and Redshift.

Available to hire

I am a passionate, motivated and highly adaptable engineer with a wealth of experience in front- and back-end programming, architecture for scalable back-ends (from APIs to fully-featured web apps), and managing rock-solid production in infrastructure.

Above all, I value best engineering practice, including CI/CD, secure design and test-driven development. In my most recent roles, I have led web application feature development and contributed directly through hands-on programming, primarily with PHP (Slim API, Symfony), Python (FastAPI, Django) and TypeScript (React). I have championed serverless AWS in infrastructure as code tools, and have also led a data engineering team; during this time I delivered a greenfield data platform that transformed the company’s data analytics function, again leveraging AWS services, including S3, Kafka, Glue, Athena and Redshift.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Full-Stack Developer at Jisc

May 1, 2025 - November 1, 2025

Designed and built a new AWS infrastructure using Terraform, CDK and Chef; upgraded the system using PHP and TypeScript, introducing TDD; implemented CI/CD and containerised development environment to modernise the workflow.

Full-Stack Developer at UCheck

October 1, 2023 - April 30, 2025

Developed migration tools using Core PHP, SQL, Python and AWS; introduced integration and end-to-end testing to improve confidence and stability; modernised a legacy codebase with improved SOLID principles and added front-end testing with Jest; led adoption of Docker and Terraform to establish IaC and containerisation practices.

Senior Software Engineer at Efficio Ltd.

May 1, 2016 - August 31, 2023

Led re-architecture of the data platform to enable real-time analytics; built a Python suite leveraging Lambda, SQS, SNS, Kafka, Glue and Athena to power internal and client analytics; formed a unified data lake on AWS using Lake Formation, S3 and Glue; steered end-to-end development of the company's web app using microservices and REST/event-driven APIs; oversaw AWS migration; contributed to ISO27001 security certification; delivered training and thought leadership.