Jason Christoulakis

Software Engineer

Greece2 yrs 11 mos experience

AI EnabledAI ML Practitioner

Key Highlights

Expert in building scalable, production-ready solutions.
Strong background in microservices and cloud technologies.
Proven ability to mentor and lead engineering teams.

Stackforce AI infers this person is a Software Engineer with expertise in Fintech and Healthcare, specializing in scalable solutions and cloud technologies.

Contact

Skills

Core Skills

.net FrameworkMicrosoft AzureAsp.netMicroservicesGoReact.jsNode.jsMachine LearningComputer Vision

Other Skills

Event DrivenMicrosoft SQL ServerASP.NET CoreGo (Programming Language)PostgreSQLMongoDBJavaScriptAlgorithmsData StructuresMERN StackDevOpsPyTorchData ScienceArtificial Intelligence (AI)TensorFlow

About

I am a Software Engineer with an M.Eng/M.Sc. and experience building scalable, production-ready solutions using C#, Go, and JavaScript. My career has grown significantly through active involvement in fast-paced startups across the medical, fintech, and consulting sectors, where I contributed directly to product development, system design, and end-to-end delivery. Working in high-growth environments has shaped me into a resilient, adaptable, and ownership-driven professional. I am comfortable operating in ambiguity, making thoughtful technical decisions, and aligning engineering efforts with real business needs. I approach challenges with structured thinking, clarity, and a strong sense of accountability. Beyond implementation, I focus on understanding the broader impact of technical choices prioritizing scalability, maintainability, and long-term value. I value collaboration, clear communication, and knowledge sharing, and I enjoy contributing to teams where high standards and continuous improvement are part of the culture. Driven by curiosity and growth, I aim to consistently raise the bar, both in the systems I build and the teams I contribute to.

Experience

Euronet eft segment

Software Engineer

Jul 2025 – Present · 8 mos · Athens, Attiki, Greece · Hybrid

Alternative Payments Division

.NET FrameworkMicrosoft AzureEvent DrivenMicroservicesMicrosoft SQL Server

Team candi - subsidiary of infoquest technologies

Software Engineer

Jun 2024 – Jun 2025 · 1 yr · Athens, Attiki, Greece · Hybrid

Architected and implemented frontend systems based on React.js, Typescript.
Developed backend systems ASP.NET Core for large-scale solutions using microservices, deployed on Azure AKS.
Leveraged Azure Logic Apps for orchestrating workflows and integrating with external systems, enhancing automation and scalability in backend processes through Azure Functions.

.NET FrameworkASP.NETReact.jsMicrosoft SQL ServerMicrosoft Azure

Odin konsult as

Back-End Engineer

Jun 2023 – May 2024 · 11 mos · Oslo, Norway · Hybrid

Architected and developed backend systems for various software solutions based on microservices.
Implemented data access layers, business logic, and API endpoints using Go, .NET, and ASP.NET Core.
Conducted code reviews, performed unit testing, and ensured code quality and adherence to coding standards.
Mentored junior engineers, provided technical guidance, and facilitated knowledge sharing sessions to foster a culture of learning and growth.

.NET FrameworkMicroservicesNode.jsGo (Programming Language)PostgreSQLMongoDB+1

Valmore technologies

Full Stack Developer

May 2023 – Nov 2023 · 6 mos · Athens Metropolitan Area · Remote

Software solutions for a Smart Cities platform, incorporating user’s features using React.js .
Designed an administrative dashboard utilizing React.js to provide clients with a comprehensive overview of subscription costs of platform.
Orchestrated the backend development for both the dashboard and user platform using Node.js and MongoDB.

PostgreSQLReact.jsNode.jsMongoDBJavaScript

Greek army

Private

Jan 2023 – Dec 2023 · 11 mos · Athens, Attiki, Greece

In my role within the Greek army, stationed at EFKA (Hellenic Organization of Social Security), I executed retirement procedures for officers. As a liaison between the military and EFKA, I ensured seamless coordination, compliance with regulations, and provided officers with comprehensive guidance on pension plans and benefits. Managing administrative aspects, including paperwork and financial institution coordination, I contributed to a smooth transition for Greek officers during their retirement journey.

Gixoft

Full Stack Developer

Jun 2022 – May 2023 · 11 mos

Managing the complete software development process from conception to deployment about hospital workflow acceleration. Application based on React.js for client-side and Node.js as a server-side using MongoDB. Maintaining and upgrading the software following deployment using MERN Stack.

AlgorithmsReact.jsData StructuresNode.jsMERN StackMongoDB+2

Deeplab

Machine Learning Intern

Jun 2022 – Oct 2022 · 4 mos · Athens, Attiki, Greece

Machine learning models implementation using PyTorch for computer vision tasks as predicate detection, object detection using contrastive learning techniques. We selected CLIP OpenAI pretrained models utilized as backbones for feature extraction. We tested on a large scale for investigation of visual relationship classification performance in comparison with existing backbone of codebase. Also, we improved our text labels using Spacy for NLP engineering to summarize the impact of it into contrastive learning.

Machine LearningData StructuresPyTorchData ScienceDevOpsComputer Vision