Aki Ryynänen

Company I use for contract work and personal projects. Check out Floreza and Codebowl Oy.

Developed and maintained critical internal banking systems at OP Financial Group serving bank clerks in Finland’s heavily regulated financial environment. Performed database optimization on SQL Server systems, developed database-powered features, and contributed to modernizing applications from Java legacy systems to Node.js/Express and React/TypeScript stack. Worked extensively with T-SQL and database-driven architecture while ensuring compliance with strict banking regulations.

As Tech Partner at MLU, I lead technical development for a retail analytics SaaS platform serving brick-and-mortar stores. Built a complete mobile application MVP using React Native and TypeScript, designed web application prototypes with NextJS, and researched Gen AI capabilities for potential data insights integration. Actively drive business development while leading full-stack development and technical decision-making.

Designed technology direction and performance optimization for campaign management platform, enabling comprehensive campaign data visualization and enrichment. Developed AI-powered campaign creation tool leveraging predictive analytics, enabling shop managers to create higher-performing campaigns and target new audiences.

Led development team and engineered comprehensive data pipelines for campaign management platform using Azure Data Factory, Databricks, and Delta Lake. Built targeted marketing analytics pipeline processing large-scale retail data and developed GraphQL APIs enabling shop managers to create data-driven campaigns. Mentored team members while architecting scalable cloud infrastructure with Terraform and establishing CI/CD practices.

Developed campaign management application for large Finnish retailer using React/MobX frontend with Node/Hapi backend and GraphQL/Apollo data layer on Azure infrastructure. Built seasonal preordering tool enabling stores to anticipate product demand and optimize inventory for upcoming sales periods. Implemented comprehensive Cypress E2E testing suite, significantly reducing critical path bugs in production deployments.

Led full-stack development of greenfield neurological trial management application, streamlining clinical data recording and centralizing trial communications. Architected React/Redux frontend with Material UI and Node/Express backend services. Established company-wide design system foundation and created reusable component library, accelerating development across multiple teams.

Developed data-driven SaaS platform for visualizing large-scale measurement data through intuitive user interfaces. Prototyped data persistence solutions and GraphQL APIs enabling efficient querying of high-volume datasets. Built and maintained cloud-native Azure infrastructure serving multiple clients. Created interactive data visualizations using React, TypeScript, and d3.js for complex analytical dashboards.

Served as frontend specialist on collaborative medical document editing platform for healthcare professionals, improving document workflow efficiency. Refactored existing React/Redux codebase to modern standards and established comprehensive testing practices with Jest. Mentored development team on frontend best practices and provided technical consultation on architecture decisions.

Led frontend development for Omaolo, a public sector healthcare web application enabling citizens to access self-treatment instructions, evaluate healthcare needs, and book appointments. Architected scalable React/Redux frontend as one of two frontend specialists on the project. Managed cross-functional team and collaborated with stakeholders to define feature requirements. Established development practices and mentored team members, improving delivery efficiency and code quality.