Senior Full-Stack Engineer (React/Python/Java) – Fully Remote

SupportYourApp; Polska; Remote; PLN 469,000 - 665,000; Full time

Benefits offered by this job

Fully remote work

USD compensation

International environment

Growth opportunities

Job summary

SupportYourApp is seeking a proactive Senior Full-Stack Developer to join the Application team. You will build, refine, and maintain core features across the full stack, delivering high-performance, pixel-perfect web applications while developing secure back-end systems and intuitive user experiences.

The ideal candidate has 8+ years of development, deep React experience, and hands-on Python or Java with strong architecture.

Qualifications

• 8+ years of development experience with strong Full-Stack skills.
• Proven React expertise and modern front-end proficiency.
• Hands-on Python or Java and ability to handle complex architectures.
• Fluent English, written and spoken, with strong collaboration.
• Experience delivering pixel-perfect UI and working with Figma.

Responsibilities

• Build, refine, and maintain core features across the full stack, ensuring high performance and a polished user experience.
• Develop and optimize both the main application and internal Admin Interfaces (user management and billing).
• Implement high-fidelity UI/UX with pixel-perfect execution from designs.
• Translate Figma designs into production code in collaboration with PMs and designers.
• Work with another developer and QA to ensure quality and smooth deployment.
• Design and maintain significant, secure back-end logic and infrastructure.
• Maintain and update the company’s marketing website built on WordPress.
• Leverage AI tools to accelerate development and delivery.

Skills

8+ years of experience

React

English fluency (spoken & written)

Figma familiarity

Collaboration

AI tools usage

Tools

Python

Java

Job description

SupportYourApp is seeking a proactive Senior Full-Stack Developer to join the Application team. You will build, refine, and maintain core features across the full stack, delivering high-performance, pixel-perfect web applications while developing secure back-end systems and intuitive user experiences.

The ideal candidate has 8+ years of development, deep React experience, and hands-on Python or Java with strong architecture.