Steve Gkortsopoulos

SG

Looking for a job

Steve Gkortsopoulos

@stevegkortsopoulos

Software Engineer at FactSet building event-driven financial data microservices and client-facing features.

At FactSet, I design and build NestJS and Express microservices for financial data workflows, communicating through REST, GraphQL, and Kafka. I implemented idempotent Kafka consumers with retry handling to eliminate duplicate downstream processing.

I also migrated legacy modules to TypeScript architectures, reducing production incidents by about 20%, and delivered Vue and TypeScript features for internal and client teams. Earlier, I owned Spring Boot microservices at DataScouting and built React and TypeScript applications at NMN Software.

Experience

Work history, roles, and key accomplishments

FA

Current

Software Engineer

Current

Mar 2023 - Present (3 years 7 months)

Designed and built NestJS/Express microservices for financial data workflows, led migration of legacy modules to TypeScript, and improved test coverage and API contract alignment.

NestJS Express TypeScript Kafka REST GraphQL MySQL Vue.Js Clean Architecture HLD AI assisted Development Claude Code GitHub Co Pilot

DA

Software Engineer (Intern)

DataScouting

Sep 2022 - Feb 2023 (5 months)

Owned Spring Boot microservices end-to-end, built event-driven workflows with RabbitMQ, and optimized data layers to reduce latency.

Spring Boot Spring Cloud Stream RabbitMQ JPA Hibernate Retrofit Prometheus Grafana Junit Mockito

NS

Software Engineer

NMN Software

Jan 2022 - Aug 2022 (7 months)

Built web applications with React and TypeScript, integrated REST APIs, and migrated legacy PHP services to Express and TypeScript.

React TypeScript REST Express MySQL TypeORM

Education

Degrees, certifications, and relevant coursework

IU

International Hellenic University

Bachelor of Science, Computer, Informatics and Telecommunications Engineering

2017 - 2023

Pursued a Bachelor of Science in Computer, Informatics and Telecommunications Engineering, covering core computer science and engineering topics.

Tech stack

Software and tools used professionally

Availability

Looking for a job

Location

Greece

Authorized to work in

Salary expectations

48k+ EUR

Social media

Job categories

Software Engineer Backend Engineer Frontend Engineer

Skills

Microservices Distributed Systems Event Driven Architecture System Design Clean Architecture REST GraphQL Kafka RabbitMQ Idempotency Retry Dead Letter Queues API Versioning Database Design Query Optimization Indexing

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