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LLM Application Engineer

bjakcareerIrelandActAI Engineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

This role suits an engineer with software development and generative AI experience who wants to build proactive AI applications in Ireland. The LLM Application Engineer position at bjakcareer involves creating the intelligence layer for AI-native experiences and is based in Ireland.

Role Overview

The LLM Application Engineer builds the intelligence layer that drives ActAI experiences by combining software engineering, product design, and large language models. The professional creates agent workflows, refines model performance, and transforms artificial intelligence capabilities into dependable user experiences. Responsibilities span end-to-end problem ownership, from initial user requirement analysis to production evaluation and system optimization.

Key Responsibilities

Construct and deploy applications powered by large language models alongside artificial intelligence agent workflows
Architect systems focused on reasoning, planning, memory, tool usage, and execution across multiple steps
Create dependable orchestration pipelines to transform probabilistic outputs into predictable, observable, and safe actions
Connect language models with application programming interfaces, databases, search systems, internal services, and external tools
Apply prompt engineering, context management, structured outputs, and tool-calling methods to enhance model performance
Establish evaluation frameworks and datasets for measuring quality, reliability, and regression in artificial intelligence
Troubleshoot systems across the entire stack, covering model outputs, prompts, orchestration, backend services, and user interfaces
Balance quality, latency, and cost factors while optimizing artificial intelligence systems
Collaborate with product and engineering teams to transform ambiguous product challenges into working solutions
Implement production practices for observability, tracing, experimentation, and continuous system improvement

Requirements

Possess strong software engineering fundamentals alongside practical experience in constructing artificial intelligence applications
Demonstrate hands-on background with large language models, generative artificial intelligence, or agent-based architectures
Show previous involvement in designing prompts, workflows, evaluations, or model behaviors
Demonstrate the capability to write clean, production-grade code
Maintain comfort when operating across model, system, and product abstraction layers
Exhibit strong problem-solving capabilities within ambiguous environments
Maintain a focus on shipping, iteration, and continuous improvement

Skills and Tools

Python
OpenAI-compatible Application Programming Interfaces and open-weight models
Agent frameworks and orchestration systems
Vector databases and retrieval systems
Backend services and distributed systems
PyTorch and JAX

About the Company

ActAI develops proactive applications intended for users globally to simplify tasks without requiring complex prompting. The organization focuses on bringing intelligence to everyday conversations, errands, organization, and workflows. The product strategy emphasizes high reliability for long-running workflows, persistent context, and real-world task completion to minimize hallucinations.

How to Apply

Interested candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the LLM Application Engineer position located?

The role is located in Ireland.

What tools and technologies are used in the tech stack?

The tech stack includes Python, OpenAI-compatible APIs, open-weight models, agent frameworks, orchestration systems, vector databases, retrieval systems, backend services, distributed systems, PyTorch, and JAX.

What are the primary responsibilities of this role?

Responsibilities include building LLM-powered applications, designing agent workflows and reasoning systems, creating orchestration pipelines, integrating models with databases and APIs, developing evaluation frameworks, debugging across the stack, and optimizing for quality, latency, and cost.

What background is required for applicants?

Applicants need strong software engineering fundamentals, hands-on experience with LLMs or generative AI, experience designing prompts and evaluations, the ability to write clean production code, and problem-solving skills in ambiguous environments.

How should I submit my application?

Candidates must apply on the official company careers page.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site