Antoni Potocki

Developed and enhanced web and mobile applications using Flutter for landlords and real estate agents in the property management sector. Integrated Stripe for payments with an uptime of 99.9% and reduced transaction failure rates by 30%. Improved automation workflows, increasing operational efficiency by 25%. Scaled the platform for multi-market growth, growing the user base from 500 to 3,000 in six months. Optimized performance to reduce average application load times from 4s to 1.5s. Contributed to code reviews, mentoring juniors, and comprehensive technical documentation. Implemented OAuth2-based security, helped design scalable microservices, and leveraged AWS for high availability and rapid deployments.

Developed solutions for a healthcare client, modernizing legacy systems with modern web technologies to reduce data processing time from hours to minutes. Collaborated with product owners to align technical deliverables with user needs, resulting in improved client satisfaction. Implemented performance monitoring and optimized resource allocation, achieving a 15% reduction in operational costs. Owned a critical module and increased load handling from 100 to 500 concurrent users for high-traffic launches. Improved API speed and reliability, mentored junior engineers, and contributed to knowledge sharing.

Consulted with a fintech client, redesigning transaction systems to improve reliability under high load. Built RESTful APIs for secure data exchange, improving transaction speed and reducing costs. Implemented CI/CD pipelines with Jenkins and used AWS for deployment, ensuring resiliency and disaster recovery. Translated client requirements into actionable software tasks, and optimized database queries to significantly reduce critical reporting module load times from 10s to 3s.