Senior AI Engineer: Backend & LLM Integrations (Remote)

Upsaily.b2b; Kraków; Hybrid; PLN 165,000 - 234,000; Full time

Job summary

Upsaily.b2b is seeking an experienced AI Engineer to join a team building practical AI solutions. The role blends backend development, AI model integration, and system automation across on-prem and cloud environments.

You will work with OpenAI, Azure OpenAI, or open-source models, design AI agent pipelines, and optimize costs and security while collaborating with DevOps, analysts, and business stakeholders.

Qualifications

• Experience in developing backend solutions and integrating systems via APIs.
• Practical experience with AI / LLM tools, including language models, prompts, context, tokens, and cost limits.
• Experience integrating with AI models such as OpenAI, Azure OpenAI, Gemini, Claude/Anthropic, or open-source models.
• Ability to design and develop solutions based on AI agents, task automation, agent pipelines, or similar mechanisms.
• Knowledge of Docker / Docker Compose and the ability to prepare local or isolated development environments.
• Experience working with Git, code reviews, conflict resolution, refactoring, and maintaining code quality.
• Ability to diagnose technical issues in applications, logs, integrations, databases, and runtime environments.
• Understanding of CI/CD, containerization, and working with testing and production environments.
• Strong collaboration skills when working with development teams, DevOps, analysts, and business stakeholders.
• Focus on security, access control, license compliance, and responsible use of AI tools.

Responsibilities

• Developing and maintaining tools based on AI agents, workspaces, prompt configurations, and agent pipelines.
• Integrating applications with LLM models and developing an intermediary layer such as an AI Gateway / proxy / broker.
• Developing the backend of AI applications, including handling the import, indexing, and processing of documents such as PDF, DOCX, XLSX, CSV, and Markdown.
• Building integrations with company tools such as Jira, SharePoint, Power BI, Grafana, n8n, and databases.
• Preparing and maintaining development environments based on Docker, Docker Compose, containers, and isolated workspaces.
• Collaborating on deployments, application configuration, CI/CD processes, and Kubernetes environments.
• Monitoring the usage of AI models: tokens, costs, requests, metrics, and expanding dashboards in Grafana.
• Testing new AI models, including open-source models, and evaluating their quality, costs, and deployment potential.
• Optimizing the costs of using AI through caching, proxies, prompt compression, and best practices for token usage.
• Refactoring code, conducting code reviews, fixing bugs, and organizing repositories.
• Co-creating and implementing standards for using AI in projects and documenting best practices for the team.

Skills

Backend development

API integration

AI/LLM tooling

OpenAI integration

AI agents / pipelines

Docker / Docker Compose

Git

CI/CD

Security & compliance

Tools

Docker

Docker Compose

Git

Kubernetes

CI/CD tools

Job description

Upsaily.b2b is seeking an experienced AI Engineer to join a team building practical AI solutions. The role blends backend development, AI model integration, and system automation across on-prem and cloud environments.

You will work with OpenAI, Azure OpenAI, or open-source models, design AI agent pipelines, and optimize costs and security while collaborating with DevOps, analysts, and business stakeholders.