Senior AI Engineer - Production-Grade AI Apps

Internetwork Expert; Lisboa; Hybrid; EUR 75,000 - 115,000; Full time

Job summary

Trinetix is seeking a Senior AI Engineer to design and implement production-grade AI applications using Python. You will translate business needs into scalable AI solutions, build backend services and APIs, and work with LLMs across enterprise systems.

You will contribute to architecture decisions, ensure observability and testing, and collaborate with clients and stakeholders to refine requirements and deliver robust AI-enabled products.

Qualifications

• 5+ years of experience in software/ backend engineering or related fields.
• Strong Python fundamentals and production-grade Python applications.
• Experience deploying AI or LLM-powered products beyond notebooks.
• Experience building backend services and APIs using Python.
• Solid software engineering fundamentals: modular design, testing, version control, CI/CD.
• Hands‑on experience evaluating LLM outputs with repeatable tests.
• Experience with observability, instrumentation, logging and monitoring of production apps.
• Ability to reason from first principles and solve unfamiliar technical problems.
• Strong communication with technical and business stakeholders.
• Ability to balance hands-on delivery with design leadership.

Responsibilities

• Design and build production-grade AI applications and services using Python.
• Translate business requirements and AI use cases into practical technical solutions.
• Build backend services, APIs, workflows and integrations with LLMs and AI capabilities.
• Design evaluation frameworks and test cases to measure AI outputs.
• Develop techniques to improve consistency and predictability of LLM-powered features.
• Implement observability, instrumentation, tracing and monitoring for AI systems.
• Build reusable components for prompting, model interaction, evaluation, retrieval and orchestration.
• Develop automated tests and CI/CD pipelines for AI applications.
• Integrate AI applications with enterprise data platforms and APIs.
• Diagnose and resolve issues in deployed applications and production workloads.
• Contribute to architecture and technology decisions across AI products.
• Review engineering work and establish best practices for Python and AI development.
• Work directly with clients and stakeholders to refine requirements and shape solutions.

Skills

Python fundamentals

Backend services

APIs

LLM integration

Observability

Problem solving

Stakeholder communication

Job description

Trinetix is seeking a Senior AI Engineer to design and implement production-grade AI applications using Python. You will translate business needs into scalable AI solutions, build backend services and APIs, and work with LLMs across enterprise systems.

You will contribute to architecture decisions, ensure observability and testing, and collaborate with clients and stakeholders to refine requirements and deliver robust AI-enabled products.