Marinos Dakis Portfolio

Work Experience

Jun 2024 – Present

Engineered a broker management platform integrating MetaTrader 4/5, cTrader, TradeLocker, and MatchTrader APIs with React, Node.js, Python, C++, MySQL, and AWS, handling 2M+ accounts and 100M+ transactions across 20 brokers and 30 trading servers.
Developed an automated broker communication system using SendGrid, streamlining request handling and preventing $500K+ in fraudulent withdrawals.
Deployed a Compliance Dashboard with hedging and HFT detection, margin alerts, network tracking, news-trading reports, and aggregated metrics, improving review accuracy by 90%.
Implemented secure AWS S3 storage for evidence and broker files, improving accessibility for compliance and abuse investigations.
Implemented CI/CD pipelines for containerized services on AWS ECS with Docker and Wine, integrated with ECR and CodePipeline, sustaining 99.9% uptime.

Sep 2023 – Present

Built a full-stack application using Next.js, TypeScript, Tailwind CSS, and Redux, deployed on Vercel with Neon PostgreSQL and Redis, reducing page load times by 40%.
Integrated Google AdSense, multilingual support with i18next, and a responsive REST API architecture, increasing site traffic by 75%.
Streamlined backend performance by optimizing database queries and caching strategies, improving data retrieval speed by 50%.

Mar 2023 – May 2024

Built an analytics dashboard using React, PHP, and SQLite3, reducing statement processing time by 80%.
Optimized a PDF generation process with FPDF and jQuery, decreasing execution time by 74%.
Migrated a legacy system from PHP, JavaScript, and SQLite3 to Django, MySQL, and React, improving overall system performance by 80%.
Developed document workflows for upload, validation, and download, cutting manual review time by 40%.

Jan 2022 – Feb 2023

Maintained and enhanced enterprise web applications using C#, ASP.NET MVC, React, and Sitecore, reducing production defects by 70% in an agile environment.
Implemented feature flag management with LaunchDarkly for ordering and payment systems, enabling real-time rollouts to 2.5M+ users.
Awarded the Rising Star and Top Talent Appreciation awards for contributions on a 178-person project.

Aug 2020 – Jan 2021

Increased website traffic by 500% within two months by optimizing webpages and leveraging WordPress plugins such as Elementor and Yoast SEO.
Accelerated the project launch timeline by 10 weeks and reduced outsourcing costs by leading a migration to Bluehost.
Trained board members and interns on website editing, security protocols, and maintenance, ensuring long-term site stability.
Recognized with the Certificate of Excellence, Certificate of Recognition, and Triple C Award for over 100 hours of volunteer technical support.