Senior AI Backend Engineer (Go & Python)

Experis; Polska; Hybrid; PLN 200,000 - 320,000; Full time

Benefits offered by this job

Medicover healthcare

Multisport card

Group life insurance

Fully remote work model

Long-term cooperation

Job summary

Experis is seeking a Senior AI Backend Engineer to design and build scalable AI-powered platforms. The role focuses on multi-agent systems, advanced RAG architectures, and high-performance backend services, with 100% remote work.

You will collaborate across AI and platform teams to deliver production-grade GenAI solutions, requiring 5+ years in backend engineering and strong Go and Python expertise.

Qualifications

• 5+ years of backend software engineering experience.
• Expert knowledge of Go (Golang).
• Strong hands-on Python in AI/ML contexts.
• Experience building AI apps with RAG, vector databases, and token streaming.
• Knowledge of asynchronous processing, distributed systems, and APIs.

Responsibilities

• Design and implement stateful multi-agent workflows and autonomous tool-calling systems.
• Build and optimize Advanced RAG pipelines with data ingestion, vector DBs, and reranking.
• Develop high-performance backend services emphasizing scalability, low latency, and concurrency.
• Create clean, strongly typed APIs for web and CLI applications.
• Improve reliability with robust error handling, monitoring, and recovery strategies.
• Collaborate with AI and platform teams to deliver production-ready GenAI solutions.

Skills

Go

Python

Backend engineering

APIs

Asynchronous processing

Tools

Vector databases

Python ML frameworks

Agentic frameworks

AI orchestration

Distributed systems tooling

Job description

Senior AI Backend Engineer (Go & Python)

Location: 100% Remote
Contract: B2B
Start Date: ASAP / Within 1 Month / Flexible

We are looking for a Senior AI Backend Engineer to design and build scalable AI-powered platforms, focusing on multi-agent systems, advanced RAG architectures, and high-performance backend services.

Your Responsibilities

• Design and implement stateful multi-agent workflows and autonomous tool-calling systems.
• Build and optimize Advanced RAG pipelines, including data ingestion, semantic chunking, vector database integrations, and reranking mechanisms.
• Develop high-performance backend services with a focus on scalability, low latency, and concurrency.
• Create clean, strongly typed, and extensible APIs supporting both web and CLI applications.
• Improve reliability through resilient error handling, monitoring, and recovery strategies.
• Collaborate with AI and platform teams to deliver production-ready GenAI solutions.

Requirements

• 5+ years of experience in backend software engineering.
• Expert knowledge of Go (Golang).
• Strong hands-on experience with Python, particularly within AI and Machine Learning ecosystems.
• Experience building AI applications using:
  • Agentic frameworks and AI orchestration
  • RAG architectures
  • Vector databases
  • Token streaming
  • Memory management
• Strong understanding of:
  • Asynchronous processing
  • Event-driven architectures
  • State machines
  • Streaming protocols
  • Distributed systems
• Experience designing and building scalable APIs and backend platforms.

Nice to Have

• Experience with LLM platforms and AI agents.
• Knowledge of modern AI frameworks and orchestration tools.
• Experience optimizing backend systems for heavy AI workloads.
• Familiarity with cloud-native environments and platform engineering practices.

What We Offer

• B2B contract via Experis
• Medicover healthcare package
• Multisport card
• Group life insurance
• Fully remote work model
• Long-term cooperation
• Opportunity to work on cutting-edge AI, Agentic AI, and RAG-based solutions in an international environment.