Senior Full-stack Software Engineer – Generative Ai @marshtech

Mercer

Cluj, Romania
Hybrid (3 days onsite, 2 days remote)
Generative ai
Large language models (llms)
Full-stack development
Mercer is looking for a Senior Full-Stack Software Engineer specializing in Generative AI to develop enterprise-grade AI-enabled solutions. The ideal candidate should have extensive experience with both frontend and backend technologies, particularly with Large Language Models, while contributing to a supportive and innovative workplace culture

Job Summary

  • Lead the technical design and delivery of complex, AI-enabled features or services.
  • Integrate Large Language Model (LLM) capabilities into production systems, selecting appropriate patterns, tools, and architectures.
  • Provide technical guidance and mentorship to other engineers through design discussions and example.

Matching Summary

Match Score: 85

Mercer is looking for a Senior Full-Stack Software Engineer specializing in Generative AI to develop enterprise-grade AI-enabled solutions. The ideal candidate should have extensive experience with both frontend and backend technologies, particularly with Large Language Models, while contributing to a supportive and innovative workplace culture.

Skills & Requirements

Must-have

  • Generative AI
  • Large Language Models (LLMs)
  • Full-stack development
  • NestJS / NodeJS or FastAPI / Python
  • Modern frontend framework (React with TypeScript)
  • Cloud infrastructure
  • API design
  • Distributed systems
  • Service-oriented architectures

Nice-to-have

  • Retrieval-Augmented Generation (RAG)
  • GenAI frameworks (LangChain, LangGraph)
  • AI agents and orchestration
  • Prompt engineering and guardrails
  • Cloud-native architectures
  • CI/CD pipelines
  • Infrastructure-as-code
  • Security-driven design

Key Requirements

  • 6+ years of professional software engineering experience
  • 2+ years of hands-on LLM experience
  • Strong proficiency in a modern frontend framework
  • Deep hands-on experience with NodeJS / NestJS and/or Python
  • Proven experience deploying, operating, and supporting systems in cloud environments
  • Experience working in Agile delivery teams

Work Rights

Not specified

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