[agent] spawned · target=stefsek
[agent] task: build profile
⏺ TodoWrite(todos)
⎿ ☐ Read about me
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role: Data & AI Engineer // AWS
focus: Cloud-Native Data Pipelines // AI Engineering // LLM Integration
edu: MSc Big Data Analytics — University of Derby
BSc Applied MathematicsData & AI Engineer specializing in end-to-end data architectures on AWS —
from large-scale batch migrations to real-time streaming ingestion systems.
Experienced in integrating LLM-powered solutions into production environments
using LangChain/LangGraph, building event-driven architectures, and designing
data lake solutions. Strong proficiency across the AWS ecosystem, Python, SQL,
NoSQL databases, and Infrastructure as Code. Focused on delivering systems
that are scalable, reliable, and drive tangible business value.
aws_services:
- Lambda - Step Functions - Glue
- Kinesis - EventBridge - S3
- RDS - ECS - DMS
- DynamoDB - Secrets Manager - CloudWatch
- Bedrock
infrastructure_as_code:
- CloudFormation - AWS CDK
languages:
- Python - SQL
databases:
- Amazon Redshift - PostgreSQL - MongoDB - DynamoDB
frameworks_and_tools:
- FastAPI - LangChain - LangGraph
- Streamlit - Git~/projects/aws-ticket-management.md
~/projects/weather-app.md
~/projects/reflection-agent.md
status: HIGHLIGHTED
about: MSc Thesis · serverless event-driven ticketing on AWS
stack: Lambda · Kinesis · DynamoDB · Step Functions · S3 · CDK · SNS · LangChain
An event-driven serverless ticketing system that processes support requests
in real-time. Incoming tickets are ingested through Kinesis Data Streams and
orchestrated by Step Functions. Each ticket undergoes sentiment analysis with
Amazon Comprehend, followed by AI-generated responses using Bedrock LLMs via
Lambda. Ticket metadata is stored in DynamoDB for fast retrieval, while complete
records are archived in S3. SNS handles real-time notifications, and AWS Glue
performs ETL operations to load data into Redshift for analytics. CloudWatch
Alarms monitor the entire pipeline for failures.
▸ repo → github.com/Stefsek/AWS-TicketManagementSystem
status: SHIPPED
about: Real-time city weather dashboard with interactive map
stack: Python 3.13 · Streamlit · Open-Meteo API · Folium · UV
A single-page weather dashboard that delivers real-time conditions for any
searched city, including temperature with °C/°F toggle, humidity, wind speed,
and wind direction. Uses Open-Meteo's geocoding and forecast APIs with response
caching to reduce redundant calls. Features an interactive Folium map and a
modular architecture separating services, models, and utilities.
▸ repo → github.com/Stefsek/weatherWebApp-gsd
status: SHIPPED
about: Iterative prompt engineering with LangGraph self-critique
stack: Python 3.13.5+ · LangGraph · LangChain · Google Gemini API · Pydantic · LangSmith
An agentic prompt engineering system implementing the reflection pattern where
AI models examine and improve their own outputs iteratively. Uses a two-node
LangGraph workflow (Generation + Reflection) with structured Pydantic outputs,
comprehensive token tracking, and LangSmith observability. Each iteration
incorporates feedback to progressively refine prompts, addressing edge cases,
safety, and user experience. Demonstrated with a Wi-Fi troubleshooting chatbot
that evolved from basic framework to production-ready prompt across 4 iterations.
▸ repo → github.com/Stefsek/reflection-agent
linkedin → linkedin.com/in/stefanos-sekis
email → schekies@outlook.com.gr
Profile assembled for user "stefsek".
Tool calls: 7 Read · 1 Glob · 1 TodoWrite · 9 total