Senior Backend Platform Engineer: Scalable AI Cloud APIs

Gramian Consulting; Poland; On-site; PLN 165,000 - 248,000; Full time

Job summary

Gramian Consultancy seeks an experienced backend engineer to design and deliver scalable microservices and APIs for cloud-based applications. You will integrate AI components, ensure secure auth, and collaborate with AI teams to deploy models in containerized environments.

Required: 5–10 years in backend/software engineering, strong Python/Node.js, REST/GraphQL, RBAC, and English proficiency. This is a Europe-based contractor role with a full-time commitment.

Qualifications

• 5-10 years of backend, platform, or software engineering experience.
• Strong hands-on Python and/or Node.js development.
• Experience building scalable, secure cloud-based apps via microservices.
• Expertise designing RESTful or GraphQL APIs and microservices.
• Hands-on enterprise authentication, authorization, and RBAC.
• Fluent professional English.

Responsibilities

• Design and build highly scalable, resilient, and secure microservices and backend APIs.
• Develop RESTful and GraphQL services for production-grade applications.
• Integrate business databases, third-party services, and legacy internal platforms with AI systems.
• Optimize backend latency, throughput, and resource allocation for real-time AI workloads.
• Implement enterprise-grade authentication, authorization, RBAC, and rate limiting.
• Build secure service-to-service integrations across cloud environments.
• Establish clean coding standards and maintain strong engineering quality.
• Write comprehensive integration tests and participate in code reviews.
• Collaborate with AI engineers to deploy models and services in unified containerized environments.
• Apply Git, CI/CD, testing, and cloud engineering best practices throughout delivery.

Skills

Python

Node.js

RESTful APIs

GraphQL

microservices

RBAC

CI/CD

Git

Cloud

Automated testing

Code review

Tools

AWS

Docker

Kubernetes

GitHub Actions

Job description

Gramian Consultancy seeks an experienced backend engineer to design and deliver scalable microservices and APIs for cloud-based applications. You will integrate AI components, ensure secure auth, and collaborate with AI teams to deploy models in containerized environments.

Required: 5–10 years in backend/software engineering, strong Python/Node.js, REST/GraphQL, RBAC, and English proficiency. This is a Europe-based contractor role with a full-time commitment.