09/11/2026 updated

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Senior AI Full Stack Engineer | C#, .NET, MySQL, React, Azure AI

Balbriggan, Ireland
Only remote
Bachelor's Degree in Computer Science
Balbriggan, Ireland
Only remote
Bachelor's Degree in Computer Science

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Tomas Rios.docx

About me

Senior AI Full Stack Engineer with 9+ years building secure web platforms across DataW and A4D. Skilled in C#, .NET, MySQL, React, ASP.NET Core, and AI/LLM workflows, delivering production systems that improve automation, data quality, release speed, and customer experience for distributed teams.

FlutterASP.NETJava (Programming Language)JavaScriptApplication Programming Interfaces (APIs)Android (Software)Microsoft AzureC Sharp (Programming Language)Cloud EngineeringDevOpsPython (Programming Language)Azure SQLNode.jsAzure Machine LearningNext.jsSQL DatabasesSystems IntegrationTypeScriptAzure Automation.NET CoreReact.jsSwiftuiPrompt EngineeringSwift (Programming Language)Expo.ioBackendKotlinFull Stack DevelopmentDartGraphQLReact NativeFront End Software DevelopmentTerraformAzure Data AnalyticsAzure Synapse AnalyticsArtificial Intelligence Markup Language (AIML)
C# & .NET Backend Development
Extensive experience building secure, high-performance backend services using C#, .NET, ASP.NET Core, and Entity Framework Core. Delivery of production-grade APIs and middleware with OAuth/JWT access patterns, improving compliance readiness and API reliability across distributed teams.

AI Integration & Azure OpenAI
Hands-on expertise integrating Azure OpenAI and LLM workflows into internal tools and APIs. Implementation of RAG pipelines, embeddings, and prompt engineering to accelerate analyst review and automate support triage while preserving PII controls and audit logs.

MySQL & Database Engineering
Deep knowledge of MySQL schema design, query tuning, stored procedures, and execution-plan optimization. Proven track record of reducing slow queries and improving p95 response times in high-volume production environments, alongside experience with PostgreSQL, SQL Server, DynamoDB, and Redis.

React & Frontend Development
Proficiency in building responsive, accessible frontend applications using React, Angular, TypeScript, HTML5, and CSS3. Development of operational dashboards and component libraries improving visibility for large stakeholder groups.

REST & GraphQL API Design
Design and delivery of REST and GraphQL integrations connecting AI services, brokerage data, and frontend workflows. Focus on reducing duplicate entry, improving reporting accuracy, and ensuring API stability across distributed teams.

Cloud & DevOps (AWS, Azure, Kubernetes)
Automation of CI/CD pipelines using GitHub Actions, Docker, Kubernetes, and Terraform on AWS and Azure. Reduction of deployment lead times and support for secure cloud integrations with IAM, S3, EC2, and API Gateway.

Testing & Quality Assurance
Application of xUnit, NUnit, and Jest for unit and integration testing, combined with code reviews and observability tooling such as Datadog. Consistent reduction of escaped defects and production bugs while raising release confidence.

Agile & Remote Delivery
Proven ability to deliver in fully remote, distributed team environments using Agile and Scrum methodologies. Self-managed async communication and virtual collaboration to meet SLA targets and ship roadmap items faster.

Python & Scripting
Use of Python for ETL validation, data pipeline automation, and AI API integration. Reduction of recurring data defects and support for automated workflows in cloud environments.

Experience

Professional experience5 - 10 years
Freelancer since2016

Languages

EnglishNative speaker

Project history

Senior AI Full Stack Engineer

DataW
Led AI-enabled full stack services for brokerage and support workflows, cutting manual review effort by 32% and improving API reliability across remote product teams. Built C#/.NET services for AI-assisted support triage using MySQL and REST APIs, developed React/TypeScript dashboards, designed ASP.NET Core APIs with Entity Framework and MySQL indexing, integrated Azure OpenAI summarization into internal tools, automated CI/CD with GitHub Actions, Docker, Kubernetes, and Terraform, and mentored 5 engineers on .NET patterns, MySQL tuning, and AI API design.

Full Stack Software Engineer

A4D
Built full stack automation and cloud services for retail operations, improving data workflows, API stability, and internal tool delivery for distributed teams. Developed C#/.NET web tools and MySQL services, built ASP.NET MVC and Angular interfaces for inventory workflows, designed REST APIs and SQL data models, automated ETL validation with Python and AWS Lambda, implemented CI/CD pipelines with Jenkins, Docker, and AWS, and documented API contracts and runbooks.

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