Senior AI Engineer

Position:
Senior AI Engineer (Conversational AI)

Company:
Remofirst

Location:
Croatia or Europe

Employment type:
Full Time

Work Arrangement:
Remote

Short Summary:
RemoFirst is transforming the way businesses hire and manage global teams. As a Senior AI Engineer, you will build production-grade conversational AI systems and have a strong foundation in modern AI technologies.

Responsibilities:
- Design, develop, and maintain production-grade conversational AI systems.
- Own AI features from technical design through deployment and production support.
- Design scalable AI architectures and agent workflows.
- Build and maintain AI evaluation frameworks, benchmarks, and automated testing pipelines.
- Continuously improve AI quality through experimentation, evaluation, and data-driven optimization.
- Integrate multiple AI providers and select the best models for different use cases.
- Monitor production AI systems and proactively improve reliability, quality, and performance.
- Collaborate with product, frontend, and backend teams to deliver end-to-end AI features.
- Review technical designs and contribute to engineering best practices.
- Troubleshoot complex AI and production issues while ensuring high-quality, maintainable solutions.
- Stay up to date with the latest advancements in Generative AI and apply them where they create business value.

Requirement:
- 5+ years of experience building AI-powered applications in production.
- Strong knowledge of Large Language Models (LLMs), prompt engineering, AI agents, RAG, tool calling, structured outputs, and orchestration frameworks.
- Proven experience designing and developing conversational AI systems (voice and/or chat applications).
- Strong understanding of AI system design, including context management, memory, retrieval, multi-agent workflows, and reasoning pipelines.
- Experience building AI evaluation frameworks, automated testing pipelines, benchmarking, and regression testing.
- Demonstrated experience improving AI quality through iterative evaluation and experimentation.
- Strong software engineering fundamentals, including clean architecture, design patterns, testing, and maintainable code.
- Experience integrating multiple AI providers such as OpenAI, Anthropic, Gemini, or similar.
- Experience deploying, monitoring, and maintaining AI applications in production environments.
- Full-stack development experience with modern backend and frontend technologies.
- Strong analytical and problem-solving skills.
- Ability to evaluate multiple AI approaches and select the most effective solution based on quality, reliability, latency, and cost.
- Ability to independently own complex AI projects from design through production with minimal supervision.

Benefits:
- Startup environment: Influence and grow rapidly in an early-stage startup.
- Growth opportunity: Join an AI-forward company driving innovation through artificial intelligence.
- Direct impact: Your work will be central to revenue growth and customer support.
- Autonomy and Accountability: No bureaucracy; prioritize speed and results.
- Work for a Market Leader: Scale projects for market-leading companies like Microsoft and Mastercard.
- Leadership visibility: Report to the Lead AI Engineer on strategic projects.
- Competitive compensation and 100% remote work.
- Culture: Work with colleagues from top tech companies, valuing respect, kindness, and diversity.