Remote Backend Engineer: Scalable APIs & Databases

Fyerx; Poland; Remote; PLN 180,000 - 300,000; Full time

Job summary

FyerX is seeking a seasoned Back-End Developer to architect, develop, and maintain scalable server-side logic and database structures for internal operations and client transformations.

You will design high-performance RESTful APIs and GraphQL endpoints, optimize SQL/NoSQL databases, and collaborate with frontend, DevOps, and project managers to ensure efficient, secure systems. Remote work is supported, aligning with distributed backend environments.

Qualifications

• 3+ years of professional back-end development experience with a proven track record of building, deploying, and maintaining secure, high-load server-side systems.
• Advanced proficiency in one or more back-end languages (Node.js, Python, Java, Ruby, PHP) and their frameworks (Express, Django, Spring Boot).
• Deep understanding of database architecture, data modeling, and query optimization across SQL and NoSQL environments.
• Experience with cloud services and containerization (Docker, Kubernetes) and modern deployment pipelines.

Responsibilities

• Architect, develop, and maintain robust, scalable server-side logic and database structures for internal operations and client tech transformations.
• Design and implement high-performance RESTful APIs and GraphQL endpoints for secure communication with front-ends and third-party services.
• Manage and model relational and NoSQL databases for throughput, latency, and reliability.
• Collaborate with front-end, DevOps, and project managers to troubleshoot performance bottlenecks and align backend architecture with goals.
• Implement security protocols, oversee CI/CD pipelines, and perform regular performance tuning.

Skills

Backend languages

RESTful APIs

GraphQL

Databases

Cloud & containers

Code quality

Tools

Docker

Kubernetes

AWS

Google Cloud

Azure

Job description

FyerX is seeking a seasoned Back-End Developer to architect, develop, and maintain scalable server-side logic and database structures for internal operations and client transformations.

You will design high-performance RESTful APIs and GraphQL endpoints, optimize SQL/NoSQL databases, and collaborate with frontend, DevOps, and project managers to ensure efficient, secure systems. Remote work is supported, aligning with distributed backend environments.