AI Research Engineer (Python/NodeJS)

Katowice - Poland

Monthly Salary: Not Disclosed

Posted on: 30+ days ago

Vacancies: 1 Vacancy

The job posting is outdated and position may be filled

Job Summary

Voucherify is seeking an experienced AI Research Engineer (Python/NodeJS) (F/M/X).

We are a small but profitable software company with a flat hierarchy. Youll get competitive pay flexible working hours autonomy fully remote work and a healthy work-life balance. Voucherify is a SaaS company based in Katowice Poland offering an API-first Promotion & Loyalty Engine that serves 350 global customers including brands like John Deere Michelin BOSCH Philips easyJet and Burger King. Watch: What (the heck) is Voucherify

About the Role

This is a unique opportunity to apply the latest advancements in AI to a real-world SaaS product used by hundreds of customers worldwide.

In this role youll leverage your expertise in Python (and optionally NodeJS) to design and develop AI-powered services integrate large language models (LLMs) build retrieval-augmented generation (RAG) and agent-based workflows. Your work will move directly into production powering features that thousands of marketers and developers will use daily.

This position is ideal for someone who wants to:

Own impact at scale see your models drive measurable results in campaign performance across industries like retail travel and e-commerce.
Work at the frontier of AI & SaaS bring LLMs agent frameworks and orchestration logic into a high-traffic API-first platform.
Grow fast with a lean senior team collaborate closely with experienced engineers and product leaders in a flat international company.
Shape the future of promo & loyalty tech be part of the team turning Voucherify into the most AI-enhanced promo engine on the market.

What Youll Do

Build AI-powered backend services design and maintain APIs and intelligent services in Python and NodeJS making them robust scalable and production-ready.
Bring LLMs into production integrate large language models with retrieval-augmented generation (RAG) pipelines and agent-based workflows using frameworks like LangChain LangGraph or FastMCP.
Design smart orchestration develop multi-agent workflows communication layers and orchestration logic to help automate and optimize promo and loyalty campaign management.
Connect the dots ensure seamless and secure communication between AI modules Voucherifys core services and external tools through event-driven interfaces.
Leverage the cloud deploy and optimize microservices on AWS making full use of Kubernetes and cloud-native best practices.
Collaborate & innovate work side by side with frontend developers system architects Sales and product teams to deliver features that push the boundaries of AI in SaaS.
Continuously improve tune performance reliability and fault tolerance ensuring that what you build runs smoothly at enterprise scale.

What were looking for

5 years of hands-on Python experience (bonus points if you also know NodeJS) preferably in AI ML or backend development.
Proven experience designing and implementing RAG functionality and working with LLMs in production.
Experience with frameworks like LangChain LangGraph or similar agentic frameworks and a passion for building tools that can reason and act.
Strong understanding of microservices event-driven systems and cloud-native architectures.
Familiarity with vector databases and prompt engineering.
Experience with MCP servers (SSE streaming async communication).
Proven track record of deploying ML solutions into production environments and AWS (Kubernetes scaling monitoring).
Strong grasp of secure coding encryption and data protection in AI systems.

If youre passionate about building intelligent AI systems and want to apply your expertise in a global SaaS platform wed love to hear from you!

Required Experience:

Manager

Voucherify is seeking an experienced AI Research Engineer (Python/NodeJS) (F/M/X).We are a small but profitable software company with a flat hierarchy. Youll get competitive pay flexible working hours autonomy fully remote work and a healthy work-life balance. Voucherify is a SaaS company based in K...