JMS
Initialising...
Available for new opportunities

Jonathan
Matthew Siles

|

I build fast, intelligent web & mobile applications powered by AI — combining modern frontend experiences, scalable backend services, cross-platform mobile apps, cloud-native infrastructure, and custom AI & machine learning solutions.

0+
Years Experience
0M+
App Users
0%
AI Accuracy
0%
Load Speed Boost

Projects I've Shipped

AI Voice Engine

Developed the core AI engine of a voice transformation platform — custom transformer-based neural network for voice-to-voice conversion across 1,400+ voice models, AI stem separation isolating 7 instrument tracks, voice cloning from audio samples, echo & reverb removal, and an AI singing generator.

Achieved 80% faster inference and 3× audio quality improvement over the previous model version.

Lalals.com

A rebuild of Lalals, taking an unfinished transition from WordPress to a modern stack through to launch.

Built across a Next.js frontend, Next.js admin, and NestJS API, with work spanning development, data migration, and support through launch and growth to roughly 3M+ users.

MusicGPT

A platform for creating, enjoying and sharing AI-generated songs, built from the ground up.

Built across a Next.js frontend, Next.js admin, and NestJS API, with a focus on execution quality, alignment with the product vision, and a polished, consistent UI through launch and early growth to roughly 20K users.

Vertooly
Vertooly

Transform your dispatch and upgrade your logistics services.

Selecting partners who align with your business goals is crucial — from suppliers to service providers, you should make choices that propel your success.

My Tech Stack

AI & Machine Learning
PandasTransformer Neural NetworksNumPyApache KafkaApache SparkElasticsearchCosmos DBData AnalyticsBusiness IntelligencePower BITableauAnomaly Detection
Frontend — Web
React.jsNext.jsTypeScriptJavaScript (ES6+)HTML5CSS3Tailwind CSSReduxReact QueryReact RouterWebpackVite
Frontend — Mobile
React NativeExpoReact NavigationNative ModulesPush NotificationsiOS DeploymentAndroid Deployment
Backend & APIs
PythonFlaskFastAPINestJSJavaSpring BootSpring SecurityNode.jsExpress.jsREST APIsGraphQLMicroservicesWebSocketsJWT Auth
Cloud & Infrastructure
AWS (RDS, EC2, Glue)Azure (SQL, Data Factory, AD)Google Cloud SQLDockerKubernetesTerraformIaaSPaaSCI/CDGitHub ActionsAzure DevOps
Databases
PostgreSQLMySQLSQL ServerMongoDBRedisFirebaseETLdbtData WarehousingHibernate ORM
DevOps & Tools
MavenGradleGitJiraConfluenceAgileScrumJUnitMockitoJestReact Testing LibraryPrometheus

My Education

Bachelor's Degree in Computer Science
Harvard University · United States
2018 – 2022

What you can expect

Steady execution, clear ownership, and follow-through on every commitment — no surprises, no chasing.

Years of pattern recognition means moving quickly without cutting corners. Production-ready code from the first commit.

Regular updates and fast responses throughout. You'll always know exactly where things stand.

I don't just ship and move on — I monitor, iterate, and optimise until the numbers reflect the goal.

Get in touch

Email
jonathansiles96@gmail.com
Location
Ongar, Essex, UK
Timezone
UTC+0 / UTC+1 (GMT / BST)
Phone
+44 07954 440298
LinkedInRésumé