Remote Full-Stack Engineer - Build Scalable Web Apps

Fyerx; Poland; Remote; PLN 193,000 - 303,000; Full time

Job summary

FyerX is seeking a remote, hourly freelance Full-Stack Developer to work on internal systems and client tech transformations. A minimum of 3 years of proven full-stack experience and a strong portfolio are required.

You will build scalable applications using Node.js, Python, Ruby, Java, or PHP, manage SQL/NoSQL databases, and design RESTful APIs. Collaboration with marketing and product teams, with emphasis on secure, high-quality code, is essential.

Qualifications

• 3+ years of professional full-stack development experience with a proven track record of building and launching complex web applications from conception to deployment.
• Advanced expertise in back-end programming languages (e.g., Node.js, Python, Ruby, Java, or PHP) and deep understanding of database management systems (MySQL, PostgreSQL, MongoDB).
• Solid experience with cloud infrastructure services (AWS, Azure, or Google Cloud), containerization (Docker, Kubernetes), and modern DevOps practices.
• Strategic problem-solving skills with a strong focus on writing clean, scalable, and well-documented code.
• Strong organizational, time-tracking, and project management skills; ability to handle multiple development projects simultaneously, meet tight deadlines, and coordinate effectively with remote tech and marketing teams.

Responsibilities

• Design, develop, and deploy scalable, full-stack web applications and digital products for FyerX's internal systems and diverse client tech transformations.
• Develop robust back-end server logic, manage databases (SQL/NoSQL), and build RESTful APIs to ensure seamless data flow and integration between front-end interfaces and third-party enterprise platforms.
• Collaborate closely with UI/UX designers, product managers, and internal stakeholders to translate complex business requirements into secure, high-performing technical solutions.
• Implement security best practices, maintain code versioning (Git/GitHub), oversee CI/CD deployment pipelines, and conduct rigorous automated testing to guarantee application reliability and minimize downtime.

Skills

Full-stack development

Node.js

Python

Ruby

Java

PHP

REST APIs

Databases

Cloud platforms

Security best practices

Remote collaboration

Tools

Docker

Kubernetes

Git

CI/CD pipelines

Job description

FyerX is seeking a remote, hourly freelance Full-Stack Developer to work on internal systems and client tech transformations. A minimum of 3 years of proven full-stack experience and a strong portfolio are required.

You will build scalable applications using Node.js, Python, Ruby, Java, or PHP, manage SQL/NoSQL databases, and design RESTful APIs. Collaboration with marketing and product teams, with emphasis on secure, high-quality code, is essential.