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Back-End & Full-Stack engineer specialized in payments, gaming platforms, and high-throughput systems. I build secure, idempotent transaction flows, scalable microservices, and real-time integrations using Go, PHP/Laravel, Node.js, and databases like PostgreSQL/MySQL with Redis for caching and queues. I’ve led architecture and delivery across multi-tenant SaaS, financial ledgers, multi-currency wallets, and real-time sports/gaming feeds. I deploy using Docker Swarm, design robust background workers and API layers, and focus on security, consistency, and performance at production scale.…Back-End & Full-Stack engineer specialized in payments, gaming platforms, and high-throughput systems. I build secure, idempotent transaction flows, scalable microservices, and real-time integrations using Go, PHP/Laravel, Node.js, and databases like PostgreSQL/MySQL with Redis for caching and queues. I’ve led architecture and delivery across multi-tenant SaaS, financial ledgers, multi-currency wallets, and real-time sports/gaming feeds. I deploy using Docker Swarm, design robust background workers and API layers, and focus on security, consistency, and performance at production scale.

Klodian Koni

Back-End Developer, Full Stack Developer, Programmer, +2

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Back-End & Full-Stack engineer specialized in payments, gaming platforms, and high-throughput systems. I build secure, idempotent transaction flows, scalable microservices, and real-time integrations using Go, PHP/Laravel, Node.js, and databases like PostgreSQL/MySQL with Redis for caching and queues. I’ve led architecture and delivery across multi-tenant SaaS, financial ledgers, multi-currency wallets, and real-time sports/gaming feeds. I deploy using Docker Swarm, design robust background workers and API layers, and focus on security, consistency, and performance at production scale.…Back-End & Full-Stack engineer specialized in payments, gaming platforms, and high-throughput systems. I build secure, idempotent transaction flows, scalable microservices, and real-time integrations using Go, PHP/Laravel, Node.js, and databases like PostgreSQL/MySQL with Redis for caching and queues. I’ve led architecture and delivery across multi-tenant SaaS, financial ledgers, multi-currency wallets, and real-time sports/gaming feeds. I deploy using Docker Swarm, design robust background workers and API layers, and focus on security, consistency, and performance at production scale.

Available to hire

Back-End & Full-Stack engineer specialized in payments, gaming platforms, and high-throughput systems. I build secure, idempotent transaction flows, scalable microservices, and real-time integrations using Go, PHP/Laravel, Node.js, and databases like PostgreSQL/MySQL with Redis for caching and queues.

I’ve led architecture and delivery across multi-tenant SaaS, financial ledgers, multi-currency wallets, and real-time sports/gaming feeds. I deploy using Docker Swarm, design robust background workers and API layers, and focus on security, consistency, and performance at production scale.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Beginner

Language

English

Fluent

Italian

Beginner

Work Experience

Backend Engineer | iGaming & Fintech at WagerCore - iGaming

July 20, 2025 - Present

Designed and supported a network-graded PMA hierarchy (Super Master to Player) with automated commission cascading and network-grade RBAC. Built a unified financial ledger and an automated commission engine using configurable commission templates to calculate per-product rates (sports, slots, live casino), with scheduled background workers to aggregate and roll up commissions daily for network settlement. Implemented consistent transaction ledger handling across casino bets, sportsbook tickets, and jackpot payouts with strict financial consistency. Securely integrated multiple casino aggregators and sportsbook providers. Deployed with Docker Swarm using dedicated workers for commission rollups, game catalog sync, and automated SSL provisioning for white-label brands.

Backend Engineer (Contract) at Arkevo Group

December 1, 2024 - May 1, 2025

Architected and developed a scalable backend for a SaaS rental & booking platform, handling complex reservation logic, multi-tenant data isolation, and automated workflows. Integrated third-party APIs (payment gateways, channel managers, external services) with secure webhook handling and idempotent transaction processing. Optimized complex database queries and implemented Redis caching layers to reduce API response times for high-traffic search and availability endpoints. Designed and maintained automated background jobs for data synchronization, reporting, and notification dispatching via queue workers.

Backend Engineer (Payments & Microservices) at Rite ch International AG

November 1, 2023 - November 1, 2024

Built secure, idempotent payment microservices in Go and PHP for complex third-party payment gateway integrations. Designed transaction flows with strict consistency, retry logic, and webhook verification to ensure zero double-charges and compliance with financial security standards. Managed system performance and data integrity across distributed services, using Redis for caching/queues and MySQL for persistent state.

Full Stack Developer (Developer Director) at Arkevo Group

May 20, 2023 - November 1, 2023

Led architecture and development of a multi-company ERP system and CRM (Dentech & Global Tours). Designed microservices and database architecture from the ground up, focusing on seamless communication between services via NATS and REST APIs. Managed the development team, distributed tasks based on expertise, and ran strict code reviews to ensure clean code and on-time delivery.

Full Stack Engineer (iGaming) at Playlogiq

February 1, 2020 - May 1, 2023

Built a sports feed microservice (Go) consuming high-throughput live sports odds from enterprise providers. Used RabbitMQ to buffer feeds, MongoDB for high-volume tick data, and Redis as a caching layer. Implemented near-zero latency updates to B2C clients via Gorilla WebSockets, handling sports, tournaments, markets, and selections. Developed a customizable sports book frontend (Preact/WebSockets) with real-time socket connections and lazy loading to avoid UI lag during peak live matches, updating odds smoothly when changes occurred.

Frontend Developer at Altech Solutions

January 1, 2019 - February 1, 2020

Developed the frontend for a multi-service e-commerce web application. Optimized performance by reducing bundle sizes and implementing lazy loading.

System Administrator at Ice Tv (Enschede, Netherlands)

March 1, 2018 - July 1, 2018

Installed, configured, and maintained Unix servers to deliver TV streams over the network. Handled troubleshooting and server optimization for live streaming infrastructure.