GitHub: https://github.com/andrewwalsh
LinkedIn: https://www.linkedin.com/in/andrewwalsh-tech/
Personal: https://awalsh.io
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Versatile full-stack freelance software engineer with experience across front-end, back-end, and AI/ML using languages such as TypeScript and Python.
I have built commercial software used by hundreds of thousands of people. Some of my open-source work has been featured #1 on Hacker News, with 1000s of GitHub stars.
I enjoy learning and thrive on difficult yet impactful real-world problems, and welcome new connections.
โฎฉ ๐ป Software Engineering
I began as a self-taught developer through freeCodeCamp in 2016. My first project was Mail for Good https://github.com/freeCodeCamp/mail-for-good.
Since then, I have continued to practice my craft and improve. I later took on a part-time MSc in Artificial Intelligence at the University of Bath to augment my skills and learn the fundamentals of AI/ML and mathematics.
โฎฉ โ๏ธ Back-end Development
As a back-end developer, alongside employment I created the open-source project https://github.com/AndrewWalsh/openapi-devtools, and gave talks on the topic of automation of underlying API contracts via the OpenAPI standard at LaunchAcademy in Vancouver, Canada. And at API Conference in Berlin, Germany.
I have extensive experience with REST and GraphQL APIs. I am also experienced in system architecture and have designed systems such as InsurTech validation workflows.
โฎฉ ๐จ Front-end Development
Advanced knowledge of TypeScript, JavaScript, and frameworks like React. Broad experience across a range of front-end projects, including Electronic Health Records for telemedicine, dashboards for Kubernetes, and data analytics platforms.
Robust understanding of the broader front-end ecosystem and advanced topics such as accessibility, web workers and service workers, bundling and practices such as code splitting, responsive design, various approaches to state management, and UX.
โฎฉ ๐ค Artificial Intelligence and Machine Learning
Completed 12 8-week modules for a Master of Science in Artificial Intelligence at the University of Bath, with only the dissertation remaining.
I have developed neural network models for HealthTech companies, and created data engineering projects for startups in the USA. Proficient with libraries such as Pandas/NumPy and data science practices.
โข Designed a serverless backend architecture to validate insurance claims against complex requirements. Used volatility decompositio...
โข Designed a serverless backend architecture to validate insurance claims against complex requirements. Used volatility decomposition, AWS Lambdas / Step Functions / Dynamo DB, and TypeScript
โข Developed a validation system to apply logical and mathematical rules to files using Python and Pandas. Deployed to Google Colab
โข Formalised user stories into business and functional requirements that served as foundational logic for validation rules
Traveled across multiple countries and kept up interest in tech:
โข De...
Traveled across multiple countries and kept up interest in tech:
โข Delivered a 45 minute talk on automating OpenAPI specifications at API Conference Berlin 2024
โข Presented technical talks and discussions on deep learning to a non-technical crowd
โข Demoed OpenAPI DevTools as Launch Academyโs first demo of non-commercial open-source software