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Daniel Steiner

@danielsteiner

Senior software engineer at Belighted who developed SaaS applications and AI agent workflows connecting language models with business systems.

Croatia

Message

At Belighted, I designed and developed scalable SaaS applications using Ruby on Rails, React, TypeScript, PostgreSQL, and Redis. I also developed AI agent workflows connecting language models with APIs, application services, databases, and business logic.

At Belighted, I worked on REST and GraphQL APIs for web and Android applications, along with Android features in Kotlin. My work also included database design, SQL optimization, and application performance improvements.

At MONK Software, I developed full-stack web and mobile applications, including native Android applications in Java and Kotlin. I also worked on REST API integrations, Redis caching, and asynchronous processing.

At Untile, I built backend applications with PHP/Laravel and developed API-driven services for web and mobile clients. I also contributed to frontend, Android, and React Native application development.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Belighted

Jan 2022 - Feb 2026 (4 years 1 month)

Designed and developed scalable SaaS applications using Ruby on Rails, React, TypeScript, PostgreSQL, and Redis. Built reusable frontend components, backend services, and integrated external services and AI agent workflows.

Ruby on Rails React TypeScript PostgreSQL Redis REST APIs GraphQL Kotlin Android Docker CI CD AWS AI Prompt Engineering Unit Testing Integration Testing Agile

Full-Stack & Mobile Developer

MONK Software

Sep 2019 - Dec 2021 (2 years 3 months)

Developed full-stack web and mobile applications for consumer and enterprise software products. Built native Android applications using Java and Kotlin, integrated REST APIs, and optimized database performance.

Java Kotlin Android REST APIs SQL Redis JavaScript HTML CSS Testing Automation Peer Review

Full-Stack Web & Mobile Developer

Untile

Jun 2016 - Aug 2018 (2 years 2 months)

Built backend applications using PHP/Laravel and developed API-driven services for web and mobile clients. Developed interactive frontend applications using React, Angular, Vue.js, and contributed to Android and React Native development.