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Alex A

@alexa5

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Senior Python Backend Engineer at SIROC, developing ProfitTree analytics pipelines and e-commerce integrations.

Serbia

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At SIROC, I develop backend services for “PROFITTREE E-COMMERCE,” a SaaS analytics platform for online stores. I work on event tracking and data-processing pipelines, analytics materializations, and integrations with Paddle, Etsy, Printify, and Printful.

At CR-Projects, I led technical development of “PAYLIGHTS” from concept to MVP 1.0, building and coordinating a 17-person team and establishing the architecture and engineering processes. I also developed the prototype for “RACCOIN,” a cryptocurrency exchange and transaction service, and helped deliver its project scope.

At AYA-GROUP, I progressed from Python Backend Developer to project and delivery management on the “Paykassma” fintech platform, managing teams of up to 40 people. Earlier, through freelance work, I delivered software projects involving data processing, automation, web scraping, REST APIs, and desktop tools.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Python Developer

Current

SIROC

Jan 2026 - Present (9 months)

Developed and maintained backend services for a SaaS e-commerce analytics platform, focusing on data processing, integrations, and event-driven workflows. Improved performance and contributed to the transition from monolith to microservices.

fastAPI SQLAlchemy MongoDB Clickhouse Celery REST APIs Event Driven Architecture Microservices Paddle Etsy Printify Printful

Senior Backend Python Developer

NDA

Nov 2024 - Nov 2025 (1 year)

Developed backend services for a travel and booking platform, integrating multiple external providers and processing high-volume data flows. Worked in a microservices environment with event-driven communication.

Django REST Framework fastAPI Kafka Celery Kubernetes Microservices Event Driven Architecture Third Party Integrations

Technical Lead / Project Manager / Python Developer

CR-Projects

May 2023 - Nov 2024 (1 year 6 months)

Led the technical development of a fintech payment platform from concept to MVP, building and coordinating a 17-person team. Established engineering processes, architecture, and infrastructure.

Team Leadership Project Management Architecture Kubernetes Gitlab Jira Confluence Python fastAPI Flask

Project Manager / Python Developer

CR-Projects

Dec 2022 - Jun 2023 (6 months)

Designed and developed a cryptocurrency exchange prototype using Python, JavaScript, and Solidity, managing the project from start to sale. Led a small team and handled technical documentation and planning.

Python Flask fastAPI JavaScript Solidity Project Management Team Leadership

Project Manager / Lead Python Developer

AYA-GROUP

Apr 2019 - Dec 2022 (3 years 8 months)

Managed a fintech payment processing project for Asian markets, leading teams of up to 40 people. Oversaw backend development, engineering processes, and product delivery.

Python Django Project Management Team Leadership Scrum Kanban Jira Confluence Kubernetes CI CD

Python Developer

Freelance

Feb 2016 - Aug 2019 (3 years 6 months)

Developed custom software solutions for international clients, focusing on data processing, automation, and web scraping. Delivered approximately 70 projects over three years.

Python Flask PyQt Selenium AsyncIO Web Scraping Data Processing REST APIs

IT Project Manager

Foras

Jan 2015 - Nov 2015 (10 months)

Managed software and digitization projects for government institutions, leading teams of up to 20 people. Coordinated technical infrastructure, testing, and client communication.

Project Management Team Leadership Client Communication Requirements Gathering