Sweden Ecommerce Platform Modernization and Mobile Application Development

About the client

The client is a Sweden-based unicorn operating the world’s largest printer network, offering personalized print products across 30+ countries with extensive logistics partnerships and high-volume, on-demand production capabilities.

The Story

The client partnered with FiftyFive Technologies as a long-term engineering and consulting provider to modernize core systems, enhance global delivery efficiency, and build scalable digital products. The engagement covered custom software development, mobile app development, legacy modernization, AI/ML engineering, cloud-enabled scalability, DevOps automation, and agile transformation. FiftyFive deployed cross-functional engineering teams to improve performance, accelerate feature delivery, and strengthen the client’s global operational capabilities.

The challenge

• > Monolithic legacy architecture causing latency, instability, and complex debugging.

• > Deprecated frameworks leading to security vulnerabilities and high operational risk.

• > Limited scalability for growing global order volume and API integrations.

• > Absence of a mobile platform for personalized product creation and editing.

• > Inefficient delivery routing for capacity-constrained fleets across multiple countries.

• > Unstructured documentation, sprint workflows, and story-pointing affecting development predictability.

The solution

• > Migrated legacy platform to microservices architecture for modular scalability and performance.

• > Upgraded outdated frameworks, optimized database operations, and implemented security best practices.

• > Built a React Native mobile application using JavaScript, Redux, React Navigation, Jest, PHP, Node.js, and CI/CD via CodeMagic.

• > Developed ML models using Python, Solver Pulp, Graph Theory, Matplotlib, Google Maps API, and S3 for secure, scalable data processing.

• > Integrated agile methodologies including sprint planning, grooming, documentation restructuring, and story-pointing frameworks.

• > Deployed cross-functional teams including mobile engineers, backend engineers, data scientists, QA engineers, DevOps specialists, and business analysts.

The outcome

The client achieved 50% faster system performance, 60% lower maintenance costs, and a scalable microservices foundation supporting increased global transactions. The mobile app saw widespread adoption across 30+ countries, improving user experience and personalization capabilities. The ML-driven route optimization reduced delivery costs by over 60%, improving fleet utilization and operational efficiency. Agile transformation improved development predictability by 50–60%, accelerating releases and strengthening product quality. Collectively, these initiatives enhanced customer satisfaction, operational resilience, and the client’s global market competitiveness.