Hello there, I'm Marinos 💻
Senior software engineer, with a passion for building scalable and innovative solutions. Trying to navigate the entrepreneurial labyrinth! 🚀

About

Currently, I am working on a new product called JobRider, which is a SaaS that allows companies to track of their employees' CO2 GHG emissions through commuting. Trying to navigate the world of emissions, carbon credits, and carbon offsets has been a challenging and rewarding experience. I am also working for the Space Industry as a Senior Software Engineer for ESA related projects through Software Competitiveness International.

Work Experience

S

Software Competitiveness International S.A.

Jan 2023 - Present
Software Engineer
As a Senior Software Engineer, I contribute to the design and development of software applications for European Space Agency projects. I successfully delivered 5 projects (TRLs 3–7) across domains including AI, satellite ground stations, and cloud digitalization. Architected and deployed scalable backend systems for advanced satellite monitoring, integrating with ESOC operation systems to ensure real-time reliability. Designed and optimized infrastructure to support multi-mission operations, enhancing scalability and efficiency. Designed and implemented cloud-based solutions using AWS to modernize legacy processes, improving deployment speed and system scalability. Led and mentored a backend team of 2 junior engineers, practicing Agile methodologies, fostering a culture of growth and collaboration. Engage with stakeholders to successfully optimize project requirements. Collaborated on writing winning proposals, successfully securing two new projects.
B

BEAT

Sep 2021 - Jan 2023
Software Engineer
As a Software Engineer in the Payments team, I took part in the software development and maintenance of the company’s payment processing systems as well as the architecture of new software features. These systems spanned across 4 LatAm and 1 European market supporting a total of 6 million users and processing 4.5 million euros per month. I oversaw and led the software development of the company’s new invoicing system which integrated with 2 invoicing providers from the LatAm markets and resulted in successfully increasing the reliability and scalability of the invoicing processes. Participated in on-call duties once a month. To help our payments support department handle internal reporting, I developed a tool that handled historical invoicing data to produce meaningful reports, which resulted in a faster and more accurate process.
F

Flexpedia B.V.

Sep 2020 - Sep 2021
Software Engineer
I was part of the tech team responsible for improving and maintaining Paydia the company’s main product. I was given ownership of 2 projects, Invoicing and Registration, to redesign and refactor them, successfully enhancing the performance of these systems by 40%. Due to the database’s poor design the system had performance issues and performed some optimizations to improve it (apply right indices, optimize queries, apply caching).
C

Comidor S.A.

Oct 2018 - Sep 2020
Software Engineer
I was part of the product department focusing on maintaining and developing the company’s No-Code platform as well as adhere to our clients’ requirements and build features for them. I was part of the R&D department which focused on developing applications and systems that supported the main product. In this regard I contributed to the development of a cloud IDE for application building using the main NoCode platform as well as 4 cross-platform mobile applications. Responding to a client's need for dynamic document analysis, I implemented Optical Character Recognition (OCR) technology to extract text from PDF files. The solution proved so effective that it was subsequently adopted by additional clients across different projects.
B

BetPractice

Mar 2017 - Oct 2018
Software Engineer
I was part of the team as a Junior Software Engineer, contributing to bug-fixing and creating new features for the company’s products which resolved around the domain of betting.
S

SoftWeb Adaptive IT Solutions

Jun 2016 - Sep 2016
Software Engineer Intern

Skills

React
Next.js
Typescript
Node.js
Python
Go
Postgres
Docker
Kubernetes
Java
Spring Boot
AWS
CI/CD
Git
GitHub
GitLab
Jenkins
Accelerators

I like entrepreneurship

As part of my effort to learn my products' market fit, I attended 2+ accelerators.

  • W

    WALK_Auth

    Thessaloniki, Greece

    Developed a mobile application which allocates a daily carbon emission allowance to users to move towards a sustainable environment.
  • C

    Croudpolicy - Social Innovation

    Thessaloniki, Greece

    Developed a mobile application which allocates a daily carbon emission allowance to users to move towards a sustainable environment.
My Projects

Check out my latest work

I've worked on a variety of projects, from simple websites to complex web applications. Here are a few of my favorites.

KastroPoliteia

KastroPoliteia

Developed an open-source logging and analytics platform for OpenAI: Log your ChatGPT API requests, analyze costs, and improve your prompts.

Next.js
Typescript
PostgreSQL
Prisma
TailwindCSS
Shadcn UI
Magic UI
Stripe
Cloudflare Workers
JobRider

JobRider

Developed an open-source logging and analytics platform for OpenAI: Log your ChatGPT API requests, analyze costs, and improve your prompts.

Next.js
Typescript
PostgreSQL
Prisma
TailwindCSS
Shadcn UI
Magic UI
Stripe
Cloudflare Workers
Podbeam.io

Podbeam.io

Online application for podcast recording and publishing. It offers a podcast recording platform and provides tools for podcast creation, promotion, and monetization.

Python
FastAPI
Vue
Quasar Framework
PostgreSQL
Cognito
WebRTC
Docker
S3
CloudFront
Route 53
SES

TasteGreekWines

Online application for podcast recording and publishing. It offers a podcast recording platform and provides tools for podcast creation, promotion, and monetization.

Python
FastAPI
Vue
Quasar Framework
PostgreSQL
Cognito
WebRTC
Docker
S3
CloudFront
Route 53
SES

Firstaccessvillas.com

Online application for podcast recording and publishing. It offers a podcast recording platform and provides tools for podcast creation, promotion, and monetization.

Python
FastAPI
Vue
Quasar Framework
PostgreSQL
Cognito
WebRTC
Docker
S3
CloudFront
Route 53
SES

MasliakisDentist

Online application for podcast recording and publishing. It offers a podcast recording platform and provides tools for podcast creation, promotion, and monetization.

Python
FastAPI
Vue
Quasar Framework
PostgreSQL
Cognito
WebRTC
Docker
S3
CloudFront
Route 53
SES
Hackathons

I like to challenge myself

I attended 3+ hackathons. People from around the country would come together and build incredible things in 2-3 days. It was eye-opening to see the endless possibilities brought to life by a group of motivated and passionate individuals.

  • C

    CASSINI Hackathon Greece

    Thessaloniki, Greece

  • S

    Social Innovation Hackathon

    Thessaloniki, Greece

  • N

    NASA SpaceApp Challenge

    Thessaloniki, Greece

Contact

Get in Touch

Are you ready to start a new project? I offer development and entrepreneurial services, just shoot me an email and I'll respond whenever I can. Lets skyrocket your business to new heights!