Hi, I'm Artan Merko
Software Engineer with 3+ years of experience building scalable payment systems and distributed architectures. Currently at Valor PayTech, designing serverless infrastructure that processes high-volume financial transactions.
About Me
Who I Am
I'm a Software Engineer focused on payment infrastructure.
3+ years building payment infrastructure at Valor PayTech. I've worked across the full payment lifecycle — from merchant portals and virtual terminals to payment processors integrating with Visa APIs and CyberSource.
Built multi-tenant platforms with white-label capabilities, transaction APIs for sales, authorizations, captures, and refunds, and admin dashboards for merchant management.
I design systems that handle high-volume transactions reliably across thousands of merchants.
Technologies I Work With
Languages & Frameworks
Databases & Cloud
Experience
Professional Journey
Software Engineer
Valor PayTech
Building VALOR VPC, a serverless payment processing platform on AWS. Designing APIs for transaction processing (auth, sale, capture, void, refund), merchant boarding with CyberSource integration, and event-driven architectures using Lambda, API Gateway, SQS, PostgreSQL, and Redis.
Jr. Software Engineer
Valor PayTech
Built multi-tenant portal with white-label functionality for merchants and operators. Developed Virtual Terminal APIs for sales, authorizations, captures, and refunds. Integrated ElasticSearch for analytics across large transaction datasets.
Software Engineer Intern
Coding Dojo
Full stack development building web applications with MERN stack (MongoDB, Express.js, React, Node.js). Gained hands-on experience in software engineering fundamentals and agile development practices.
Projects
Payment Industry Work
Valor VPC — Payment Processor
Serverless payment platform on AWS handling real-time transactions (auth, sale, capture, void, refund) and merchant boarding. Integrated with CyberSource and Repay processors. Supports Apple Pay, Google Pay, Samsung Pay.
Merchant Portal & White Label Platform
Multi-tenant merchant management platform enabling ISOs to onboard merchants, manage transactions, view reports, and customize branding. Built white-label capabilities for portals, receipts, mobile apps, email/SMS communications with full tenant isolation.
Virtual Terminal & Payment Gateway
Card-not-present transaction interface for merchants to process payments without physical hardware. Integrated with payment gateway APIs for authorization, tokenization, and secure card data handling. Built checkout forms with PCI-compliant data collection.
Contact
Interested in working together? Let's connect
Feel free to reach out via email or connect with me on LinkedIn. I look forward to hearing from you.