10/28/2026 updated
SJ
100 % available
Senior Software Engineer & Cloud Architect | Generative AI | AWS | .NET
Wilton, Ireland
Only remote
Master of Computer Applications, Madurai Kamaraj University (First Class)About me
Senior Software Engineer with 20+ years of experience in enterprise software, and AI solutions. Skilled in AWS, Amazon Bedrock, AI agents, RAG, and .NET. Irish citizen with 16 years of experience working with IT companies in Ireland.
Generative AI & Agentic AI
Expertise in Generative AI, LLMs, AI Agents, Agentic AI, RAG, Tool Calling, Function Calling, MCP (Model Context Protocol), Prompt Engineering, Structured Outputs, Knowledge Bases, Hybrid Search, Semantic Search, Embeddings, Vector Search, AI Evaluation, and Guardrails. Platforms used include Amazon Bedrock, Ollama, Local LLMs, FAISS, and Amazon OpenSearch Service.
AWS & Cloud Architecture
Deep knowledge of AWS services including Amazon Bedrock, AWS Lambda, Amazon API Gateway, Amazon S3, Amazon RDS, Amazon DynamoDB, Amazon OpenSearch Service, Amazon EC2, Amazon CloudWatch, AWS IAM, AWS Secrets Manager, Serverless Architecture, and Containerized Applications. Proven track record designing and delivering cloud-native architectures.
Microsoft .NET & Enterprise Development
Strong background in C#, ASP.NET Core, ASP.NET MVC, ASP.NET Web API, .NET Core, .NET Framework, Entity Framework, NHibernate, LINQ, ADO.NET, WCF, Katana/OWIN, Castle Windsor (Dependency Injection), Microservices, Distributed Systems, REST API Development, Windows Services, Microsoft Azure, IIS, and Visual Studio.
Python & Backend Development
Proficiency in Python, FastAPI, SQLAlchemy, Pydantic, REST APIs, Microservices, AI/ML Integration, Automation, Data Pipelines, RAG Pipelines, Document Processing, and PDF Processing.
Frontend Development
Experience with React, Angular, AngularJS, Knockout.js, TypeScript, JavaScript, HTML5, CSS3, Bootstrap, Bootstrap 3, jQuery, and AJAX for building modern web interfaces.
Databases & Data Management
Hands-on experience with PostgreSQL, Microsoft SQL Server, SQL Server 2012, MySQL, Oracle, Amazon DynamoDB, Redis, and Microsoft Access for enterprise data management and optimization.
DevOps, Containers & CI/CD
Practical knowledge of Docker, Kubernetes, GitHub Actions, Bitbucket, Bitbucket Pipelines, Git, CI/CD pipelines, Automated Build and Deployment, and Version Control.
API Security & Integration
Expertise in REST APIs, API Design, API Integration, OAuth 2.0, JWT Authentication, Role-Based Access Control (RBAC), AWS IAM, Secrets Management, API Security, and AI Guardrails.
Testing & Software Engineering
Knowledge of NUnit, Unit Testing, Dependency Injection, SOLID Principles, Design Patterns, Enterprise Application Development, Distributed Systems, and Microservices.
Message Queues
Experience with AWS SQS and SNS for asynchronous messaging and event-driven architectures.
Expertise in Generative AI, LLMs, AI Agents, Agentic AI, RAG, Tool Calling, Function Calling, MCP (Model Context Protocol), Prompt Engineering, Structured Outputs, Knowledge Bases, Hybrid Search, Semantic Search, Embeddings, Vector Search, AI Evaluation, and Guardrails. Platforms used include Amazon Bedrock, Ollama, Local LLMs, FAISS, and Amazon OpenSearch Service.
AWS & Cloud Architecture
Deep knowledge of AWS services including Amazon Bedrock, AWS Lambda, Amazon API Gateway, Amazon S3, Amazon RDS, Amazon DynamoDB, Amazon OpenSearch Service, Amazon EC2, Amazon CloudWatch, AWS IAM, AWS Secrets Manager, Serverless Architecture, and Containerized Applications. Proven track record designing and delivering cloud-native architectures.
Microsoft .NET & Enterprise Development
Strong background in C#, ASP.NET Core, ASP.NET MVC, ASP.NET Web API, .NET Core, .NET Framework, Entity Framework, NHibernate, LINQ, ADO.NET, WCF, Katana/OWIN, Castle Windsor (Dependency Injection), Microservices, Distributed Systems, REST API Development, Windows Services, Microsoft Azure, IIS, and Visual Studio.
Python & Backend Development
Proficiency in Python, FastAPI, SQLAlchemy, Pydantic, REST APIs, Microservices, AI/ML Integration, Automation, Data Pipelines, RAG Pipelines, Document Processing, and PDF Processing.
Frontend Development
Experience with React, Angular, AngularJS, Knockout.js, TypeScript, JavaScript, HTML5, CSS3, Bootstrap, Bootstrap 3, jQuery, and AJAX for building modern web interfaces.
Databases & Data Management
Hands-on experience with PostgreSQL, Microsoft SQL Server, SQL Server 2012, MySQL, Oracle, Amazon DynamoDB, Redis, and Microsoft Access for enterprise data management and optimization.
DevOps, Containers & CI/CD
Practical knowledge of Docker, Kubernetes, GitHub Actions, Bitbucket, Bitbucket Pipelines, Git, CI/CD pipelines, Automated Build and Deployment, and Version Control.
API Security & Integration
Expertise in REST APIs, API Design, API Integration, OAuth 2.0, JWT Authentication, Role-Based Access Control (RBAC), AWS IAM, Secrets Management, API Security, and AI Guardrails.
Testing & Software Engineering
Knowledge of NUnit, Unit Testing, Dependency Injection, SOLID Principles, Design Patterns, Enterprise Application Development, Distributed Systems, and Microservices.
Message Queues
Experience with AWS SQS and SNS for asynchronous messaging and event-driven architectures.
Experience
Professional experience10+ years
Freelancer since2026
Languages
EnglishNative speaker
Project history
Built modular backend services using FastAPI, SQLAlchemy, and Pydantic. Implemented asynchronous PDF ingestion for document processing and embedding generation. Designed structured LLM outputs for reliable tool routing and response generation. Built FAISS vector search for Retrieval-Augmented Generation (RAG). Implemented conversation state and idempotent tool execution to prevent duplicate operations. Added retry and rate-limit handling for external AI service integrations. Developed REST APIs, AWS Lambda functions, scalable backend services and database components. Participated in Agile ceremonies and performed peer code reviews. Technologies: Python, FastAPI, PostgreSQL, SQLAlchemy, FAISS, Ollama, Mistral, AWS-ready architecture, C#, ASP.NET MVC, .NET Core, Web API, SQL Server, AWS Lambda, API Gateway, S3, Git, AWS DevOps, Angular.
Client: Department of Employment Affairs & Social Protection (jobsireland.ie). Built a national employment platform enabling agencies and employers to manage company and candidate profiles, publish job postings, and track applications. Developed an intelligent job-matching engine. Implemented messaging, email notification, reporting, and activity-history features. Integrated job postings with European Union portals via Web API. Participated in Agile sprint delivery. Technologies: ASP.NET MVC 4, C#, jQuery, AJAX, SQL Server 2016, Google APIs, Bootstrap, CSS3, Microsoft Azure, WCF & Windows Services.
Developed and maintained insurance policy administration modules covering policy enquiry, maintenance, surrender, cancellation, and client/beneficiary management. Implemented fund switching, top-up processing, frequency changes, and premium update functionality. Developed enterprise WCF Services integrating .NET applications with IBM Mainframe systems. Designed REST APIs for downstream systems. Optimised SQL Server stored procedures. Participated in Agile sprint delivery. Technologies: ASP.NET MVC 4, C#, jQuery, AJAX, SQL Server 2008, WCF, LDAP, Mainframe.