Open to work

Dionisis
Diamantis

Computer Scientist & Engineer

I design and build full-stack SaaS solutions, from frontend interfaces to backend services and database logic, with emphasis on performance, maintainability, and clean architecture. Based in Athens, Greece.

> Progress creates direction...

SCROLL

Building things
that matter

I'm a Computer Scientist & Engineer with an Integrated Master's degree in Computer Science & Engineering from the University of Ioannina.

I have worked across research and product environments, from smart energy optimization projects to production SaaS platforms, contributing to frontend features, backend services, and database workflows.

I enjoy solving complex technical problems with practical solutions, and outside of work I spend my time playing guitar and watching cinema.

2+
Years of experience
70+
Contributions in the last year
10+
Commits this month
100%
Delivery consistency
Experience

Where I've worked

May 2026 – Present

Data & AI Engineer

Cognity S.A.

Data & AI engineering at Cognity S.A., building LLM-powered features and agentic workflows for enterprise clients, including telecommunications sector initiatives. Designing multi-step reasoning pipelines and stateful agents with LangChain and LangGraph, integrating tools, retrieval, and external APIs to deliver reliable, production-grade AI solutions. (update soon)

Cognity S.A. logo
July 2025 – Present

Full-stack Software Engineer

Kyvera Solutions

Contributing to Kyvera Solutions, a compliance SaaS platform managing organization/entity structures and secure data rooms. Built Next.js frontend features for entity management and compliance workflows, and developed Python backend services integrating international registry APIs for KYC/KYB.

Kyvera Solutions logo
May 2025 – May 2026

Full-stack Software Engineer

Athena Research Center

Delivered full-stack product features for BIP! Finder, optimized filtering logic and database queries, and refactored legacy components for maintainability.

Athena Research Center logo
July 2022 – September 2022

Software Engineer

Intralot S.A.

Internship at Intralot S.A., focused on managing application-database interactions including connection handling, reads, inserts, and updates. Built backend functionality with Java Spring Boot, applied pair programming techniques, debugged code to ensure reliability, and participated in daily agile scrum ceremonies while tracking work in JIRA.

Intralot S.A. logo
2021 – 2022

Research Member

National Technical University of Athens

Worked on smart-building project for energy optimization using machine learning techniques, including software for managing EV charging station data and cost optimization.

National Technical University of Athens logo
Publications

Published work

May 2026

A Template-Driven Platform for Contextualised Researcher Profiles

Serafeim Chatzopoulos, Paris Koloveas, Kleanthis Vichos, Dionisis Diamantis, Thanasis Vergoulis.


ABSTRACT

Aug 2025

Accelerating Scientific Discovery with Multi-Document Summarization of Impact-Ranked Papers

Paris Koloveas, Serafeim Chatzopoulos, Dionisis Diamantis, Christos Tryfonopoulos, Thanasis Vergoulis.


ABSTRACT

Projects

Selected work

Windows Setup Automation

An Ansible playbook for provisioning a complete Windows 10/11 development environment, including PowerShell profile setup, environment variables, PATH management, WinGet package installation, and optional development workspace/bootstrap tasks via tags.

AnsiblePowerShellWinGetLuaJinjaShell

Hand Gesture Volume Control

A computer vision desktop app that controls Windows master volume by measuring thumb-index fingertip distance in real time via webcam input, with configurable calibration and smoothing for stable gesture response.

PythonOpenCVMediaPipePycaw

LyriSearch

A Java-based lyrics search engine developed for the Information Retrieval course, using Lucene Core for indexing and advanced search (phrase, fuzzy, wildcard), with pagination, highlighting, and recommendations based on search history.

JavaLucene CoreMaven
Skills

What I work with

Frontend

User Interfaces

ReactJavaScriptNext.jsHTMLCSS

Backend

Server & APIs

Node.jsPythonSpring BootREST APIsJSONPostmanOpenCVMediaPipePycaw

AI / LLM

Agents & Workflows

LangChainLangGraphLLMsRAGAgentsVector DBs

Data

Databases

MySQLMariaDB

DevOps

Infrastructure

DockerLinuxNginxYAML

Tools

Workflow

GitGitHubFigma
Education

Where I studied

Certificate in Machine Learning: Practical Applications

London School of Economics and Political Science (LSE)

Machine learning methods using R.

London School of Economics and Political Science logo

Integrated Master's & Bachelor's Degree in Computer Science & Engineering

University of Ioannina

Thesis: Resource Allocation Mechanisms in Distributed Edge Cloud Infrastructures

University of Ioannina logo

High School Diploma

Hellenic American Educational Foundation — Athens College

Participated in Mathematics Club.

Represented Athens College at CERN.

Athens College logo

Open to Opportunities

Open to discussing roles, collaborations, and impactful engineering opportunities.

contact@dionisisdiamantis.com