JavaScript Fullstack Engineer

TL;DR

JavaScript Fullstack Engineer: Build and maintain full-stack applications using JavaScript, React/Vue, and Node.js with an accent on API development, microservices, and integration with analytics and marketing platforms. Focus on designing scalable serverless functions, automation of campaign workflows, and ensuring high code quality and observability.

What you will do

• Build and maintain full-stack applications using JavaScript, React/Vue, and Node.js.
• Develop APIs, microservices, and serverless functions on GCP/Firebase.
• Integrate with BigQuery/ClickHouse and create data services for analytics and ML.
• Implement automation for creative workflows and programmatic campaign operations.
• Integrate with Meta Marketing API, Google, and TikTok to manage campaigns.
• Ensure high code quality, reliability, observability, and CI/CD standards.

Requirements

• English: B2 level or higher required
• Strong proficiency in JavaScript, Node.js, and modern React or Vue.
• Experience with GCP/Firebase (Cloud Functions, Firestore, Cloud Run).
• Experience with SQL/NoSQL and analytical databases (BigQuery or ClickHouse).
• Deep understanding of APIs, microservices, and event-driven architectures.
• Strong ownership, independence, and ability to work cross-functionally.

Nice to have

• Experience in Python.
• Experience with payment services (PayPal/Stripe).
• Experience with ad platform APIs (Meta/Google).
• Experience with marketing/payment analytics, Appsflyer/Apphud/RevenueCat.

Culture & Benefits

• 20-28 working days of vacation plus additional paid leave for family events.
• 10+3 sick days.
• Courses from the hirify.global Academy for professional growth.
• Modern offices in Prague and Warsaw.
• Top equipment provided.
• Participation in professional conferences fully paid by the company.