Senior AI Engineer - Remote Backend & RAG Systems

Aretec, Inc.; United States; Hybrid; USD 140,000 - 200,000; Full time

Benefits offered by this job

Health Insurance

401(k) Plan

Certification Stipends

Professional Development Opportunities

Flexible Work Arrangements

Paid Time Off

Job summary

Aretec, Inc. is seeking a Senior AI / Backend Engineer to build the intelligent services behind a greenfield AI solution.

You will develop Python services, LLM integrations, retrieval pipelines, APIs, guardrails, and evaluation tooling that produce grounded results with clear references to supporting source material. Collaborating with a cross-disciplinary team and federal partners, you will implement robust testing, observability, and secure data handling, delivering reliable backend components

Qualifications

• Strong Python software-development skills.
• Practical experience integrating LLMs into production applications.
• Experience designing RAG systems, retrieval pipelines, embeddings, or comparable information-retrieval workflows.
• Experience with RESTful APIs and backend service design.
• Understanding of agent orchestration, prompt design, AI guardrails, and model-output evaluation.
• Experience with automated testing and disciplined software-engineering practices.
• Strong analytical, debugging, documentation, and communication skills.

Responsibilities

• Design and develop Python backend services and APIs for the greenfield AI solution.
• Integrate large language models and build retrieval-augmented generation pipelines over approved enterprise data sources.
• Implement agent orchestration and reusable prompt-framework components.
• Build retrieval, ranking, context-assembly, and citation mechanisms that tie summaries and findings to supporting documents.
• Develop guardrails that constrain unsupported assumptions, overly prescriptive outputs, legal determinations, and decisions that belong to human staff.
• Create deterministic and probabilistic evaluation automation that measures accuracy, completeness, consistency, grounding, and adherence to guardrails.
• Build automated unit, integration, regression, and AI-quality tests.
• Instrument services for troubleshooting, performance analysis, and continuous improvement.
• Work closely with the technical lead, data engineer, full-stack engineer, and enterprise-search stakeholders throughout design and delivery.

Skills

Strong Python

LLM integration

RAG systems

RESTful APIs

Agent orchestration

Automated testing

Communication skills

Job description

Aretec, Inc. is seeking a Senior AI / Backend Engineer to build the intelligent services behind a greenfield AI solution.

You will develop Python services, LLM integrations, retrieval pipelines, APIs, guardrails, and evaluation tooling that produce grounded results with clear references to supporting source material. Collaborating with a cross-disciplinary team and federal partners, you will implement robust testing, observability, and secure data handling, delivering reliable backend components