Michal Makarewicz

Designing and developing scalable backend applications in Python using frameworks like Django and FastAPI. Implementing and maintaining RESTful APIs to ensure seamless communication between services and client-side applications. Collaborating closely with product, design, and development teams in an international, fully remote Agile environment. Writing clean, testable, and well-documented code in accordance with best practices and PEP 8 standards. Actively participating in the code review process to maintain high code quality and facilitate knowledge sharing within the team. Optimising database queries (PostgreSQL, MongoDB) to improve application performance and response times. Automating deployment processes (CI/CD) and containerising applications using Docker. Diagnosing and resolving complex technical issues and debugging applications in both development and production environments.

Architected and spearheaded the ground-up development of a mission-critical, multi-tenant listing management SaaS platform, leveraging FastAPI for core services and integrating with Google Cloud services for scalability and data processing. Engineered a fault-tolerant, high-throughput BaseLinker API integration layer, achieving sub-second synchronization for over 1M+ SKUs daily, reducing manual intervention by >98% and enabling a 500% increase in listing processing capacity. Designed and implemented complex automation workflows using Make (formerly Integromat) and custom Python scripts, integrating diverse systems including Shopify API, e-commerce platforms, and internal tools; incorporated OpenAI API for intelligent data enrichment and content generation within automated listing processes. Championed and implemented an advanced analytics engine within the platform, providing actionable insights into listing performance and market trends, directly contributing to a 15% average uplift in client sales conversion rates. Instituted a comprehensive automated testing framework (PyTest, Selenium) covering 90%+ of the codebase, drastically reducing regression defects and accelerating the feature deployment lifecycle.

Delivered bespoke software solutions for diverse clients, specializing in FastAPI for rapid API development and backend services. Developed and maintained custom WordPress sites, including advanced plugin customization and integration with external services and APIs. Engineered automation scripts and integrations leveraging Meta (Facebook) APIs for marketing analytics, ad management, and social media automation. Implemented and managed cloud-based solutions on Google Cloud Platform (GCP), including serverless functions, data storage, and application deployment for client projects. Provided expert consultation on process automation and cloud architecture, enabling clients to optimize operations and leverage emerging technologies.

As an Office Clerk in a high-volume customer service center for logistics firms, I proactively identified critical inefficiencies and independently developed an automation solution to streamline the internal document management and issuance workflow. Using Python, with libraries such as Pandas for data handling and Pyautogui for UI interaction, I created a tool that accelerated key processes by a factor of 10. This initiative significantly enhanced the productivity of a team handling approximately 1,000 client documents daily, freeing up valuable time for other business-critical tasks.

Revolutionized e-commerce operations by designing and deploying a Python-native 'Intelligent Operations Suite' for eBay and Amazon, automating over 80% of manual tasks (from listing creation to competitor price tracking), resulting in a sustained 25% YoY operational cost reduction. Developed a proprietary AI-assisted (rule-based moving towards ML concepts) product title and description optimization algorithm, which consistently improved search ranking and click-through rates by an average of 18-22% across key product categories. Orchestrated the re-architecture of the SKU and inventory management system using advanced data normalization techniques, achieving 99.9% data accuracy and enabling real-time, cross-platform inventory visibility, which unlocked an additional £50k in annual revenue by minimizing stockout losses. Led the technical strategy that secured and maintained 'eBay Top-Rated Seller Platinum' status, a testament to the robustness and efficiency of the implemented systems.