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Danilo Vrancic

@danilovrancic

Full-Stack Software Engineer at funnellab GmbH who cut daily bug reports by 90% and automated workflows that increased efficiency by 70%.

Bosnia and Herzegovina

Message

At funnellab GmbH, I build and maintain production SaaS applications and microservices using React, TypeScript, Node.js, PostgreSQL, Redis/Valkey, and AWS. Since joining, I’ve reduced daily bugs and bug reports by 90% by resolving recurring production issues, investigating root causes, and improving reliability.

I also built core automations used daily by employees, increasing workflow efficiency by 70%, and migrated Airtable data to an internal PostgreSQL database. Previously, I delivered full-stack web and mobile applications as a freelance developer and built a Raspberry Pi sensor-data pipeline during my internship at RT-RK.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack Software Engineer

Current

funnellab GmbH

Jan 2026 - Present (10 months)

Build and maintain production full-stack applications using React, TypeScript, Node.js, REST APIs, PostgreSQL, Redis/Valkey, and AWS. Reduced daily bugs by 90% and built core automations increasing workflow efficiency by 70%.

React TypeScript NodeJS REST APIs PostgreSQL Redis Valkey AWS OpenAPI Swagger Vitest Cypress BullMQ SQL GitHub Actions N8n Make.Com Terraform Sentry Cloudwatch Agile

Freelance Software Developer

Self Employed

Nov 2022 - Sep 2025 (2 years 10 months)

Delivered full-stack web and mobile applications using TypeScript, JavaScript, Node.js, React, React Native, Java, Spring Boot, and Flutter for clients and academic peers. Worked directly with clients on requirements, design, debugging, and delivery.

TypeScript JavaScript NodeJS React React Native Java Spring Boot Flutter PostgreSQL SQLite AWS REST APIs

Software Developer Intern

RT-RK

Jul 2022 - Aug 2022 (1 month)

Built a Raspberry Pi sensor-data pipeline with data processing, database persistence, and a FastAPI prototype. Implemented a port-scanning service for hot-plug device discovery and integrated simulated STM32 sensor data.

Raspberry Pi fastAPI Python STM32 Agile Testing Documentation