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Azay Karimli

@azaykarimli

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I build scalable backend platforms, payment systems, and IoT services with Python, Laravel, and PostgreSQL.

Italy

Message

What I'm looking for

I'm looking to build scalable backend, payment, IoT, or SaaS platforms where I can own technical decisions, apply DDD and event-driven architecture, and mentor cross-functional engineering teams.

At Paggio Srl, I architect data monitoring, payment, and IoT platforms using Python, FastAPI, Laravel, PostgreSQL, Redis, Docker, and Domain-Driven Design. I lead technical decisions for SEPA SDD processing, including database partitioning, event-driven queues, multi-MID routing, and secure cloud deployments.

I built a VOP payment system for batch financial transactions with idempotency, retries, and SEPA return-code handling. I also developed a FastAPI risk analytics microservice for BIC-level chargeback analysis and IBAN verification scoring.

For connected assets, I've developed real-time IoT services, REST APIs, WebSocket monitoring, and Redis and Kafka pipelines supporting more than 100 devices. PostgreSQL optimization and Redis caching reduced API response times by 40%.

Previously at MyPass, I built backend microservices and integrations for hospitality ticketing and resort access workflows. I enjoy applying DDD, test-driven development, and practical mentoring across backend, frontend, data, DevOps, QA, and product teams.

Experience

Work history, roles, and key accomplishments

Current

Tech Lead & Senior Software Engineer

Current

Paggio Srl

Jan 2023 - Present (3 years 7 months)

Architected a data monitoring platform using Python/FastAPI, Laravel, PostgreSQL, Redis, and Docker with Domain-Driven Design. Led SEPA SDD payment processing, built a VOP system, and developed a risk analytics microservice.

Python fastAPI Laravel PostgreSQL Redis Docker Domain Driven Design Event Driven Architecture SEPA Kafka WebSockets DigitalOcean

Software Developer

MyPass

Feb 2021 - Jan 2023 (1 year 11 months)

Collaborated on backend microservices for a hospitality platform, built RESTful APIs, and applied Domain-Driven Design. Optimized performance and wrote tests following a test-driven approach.

Microservices REST APIs Domain Driven Design PostgreSQL Docker JavaScript AJAX jQuery Agile Scrum

Junior Front-End Developer

Energy Installation Ltd.

May 2017 - Sep 2018 (1 year 4 months)

Created and maintained user-friendly webpages using HTML, CSS, and JavaScript. Collaborated with UI designers and introduced React.js for interactive components.

HTML CSS JavaScript React Responsive Design

Computer Systems Designer and Analyst Intern

Azercell Ltd.

Jul 2016 - Oct 2016 (3 months)

Selected for a competitive summer internship at Azerbaijan's largest telecommunications company. Gained hands-on experience with GSM technologies and the CBS5.5 system.

CBS 5.5 System Analysis