Senior React Developer

🧠 Tech Level: Senior

🗣️ Language Proficiency: Upper-Intermediate

🧾 Employment type: Full time

🌍 Candidate Location: Poland

🕐 Working Time Zone: CET

🚀 Start: ASAP

👥 Customer Description:

A sports data platform.

🧩 Project Description:

Web products for sports data, including scores, statistics, and related use cases.

⚙️ Project Phase:

ongoing

🤝 Soft Skills:

• Ability to analyse business or customer problems, design practical solutions, and formulate specifications for AI agents.

• Strong ownership and accountability for delivered work.

• Excellent written and spoken English communication skills.

💡 Hard Skills / Must Have:

• Senior-level commercial experience with React and TypeScript.

• Experience building polished, high-performing web user interfaces.

• Experience using AI coding agents for design, development, testing, code review, and improvement of production code.

• Spec-driven development experience.

• Ability to work directly in the code when most effective.

✨ Hard Skills / Nice to Have (Optional):

• Next.js.

• Vue.js.

• Understanding of C#/.NET backend services and AWS cloud infrastructure.

• Experience using AI agents within a team workflow.

📌 Responsibilities and Tasks:

• Build polished, high-performing user interfaces for sports data products.

• Break down business problems, design solutions, and create implementation plans using AI agents.

• Use AI agents to develop, test, refine, and submit merge requests.

• Review, validate, and improve production code for reliability, security, and maintainability.

🧪 Technology Stack:TypeScript, React, Next.js; backend side: C#/.NET, AWS

📞 Interview stages:

• English check (15 minutes)

• internal technical interview (1-1,5 hour)

• client interview (1 hour)

• client interview – cultural fit (45 minutes)