Featured
Customer Intelligence & Predictive Analytics Platform
End-to-end data warehouse with predictive ML models for customer churn, propensity scoring, and intelligent sales targeting
Callum Bates
About Me
Building reliable software systems for real-world business problems
I'm a full-stack software engineer who enjoys identifying and solving complex business problems by crafting bespoke, production software systems. I work end-to-end; from shaping requirements and designing architecture to shipping, operating and iterating on software used by hundreds of people.
Most of my work sits at the intersection of web applications, cloud infrastructure, and data. I've delivered systems ranging from internal operational platforms to customer-facing applications and data-driven automation; with a strong focus on reliability, usability, and long-term maintainability.
End-to-End Ownership
From problem definition and architecture through to deployment, monitoring and iteration
Systems-Focused
Experience building scalable, event-driven systems across web, cloud and data platforms
Impact-Driven
Strong focus on delivering measurable outcomes, not just features or interfaces
Currently: Open to new opportunities and exciting projects.
Featured Work
Projects I'm proud of
Featured
Purchase Order & Invoicing System with ML Automation (PERL)
Complete purchase order and invoicing system with ML-powered automation using AWS and NLP for intelligent line-item matching
LaravelPostgreSQLAWSLambdaTextractS3SvelteNLP
Featured
Site SurvAI
Public-facing application using GPT Vision for automated machine recommendations based on uploaded site images
SvelteKitNode.jsVercelOpenAI GPT Vision
Tech Stack
Technologies I work with
Core Languages
JavaScriptTypeScriptPythonPHPSQLC#C++
Frontend Engineering
SvelteSvelteKitHTML5CSS3Tailwind CSSAnimation & Interaction (GSAP)
Backend, APIs & System Architecture
Node.jsLaravelRESTful API DesignMicroservices ArchitectureEvent-driven SystemsAuthentication & Authorisation
Databases & Data Systems
PostgreSQLSQL ServerAmazon RedshiftRedis (Caching)Schema DesignQuery Optimisation & Indexing
Cloud Architecture & Infrastructure
AWS (Lambda, S3, RDS, Glue, Redshift, SNS, IAM, VPC, CloudWatch)Serverless ArchitectureEvent-driven Cloud WorkflowsVercelForgeCI/CD & Deployment Pipelines
Data Engineering & Applied Machine Learning
ETL PipelinesData WarehousingMedallion ArchitectureSageMakerJupyterPySparkPandasNumPyScikit-learnXGBoostTensorFlowNLP (TF-IDF, Tokenisation)Tesseract
Let's Work Together
Whether it's a project, an opportunity, or just to say hello - I'd love to hear from you!
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Available for new projects