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Full Stack Engineer, AI systems

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

Based in Ireland, the Full Stack Engineer - AI Systems position involves developing product layers for proactive applications and suits engineers experienced in building production-grade workflows. ACTAI seeks a professional to design reliable multi-step agent systems and integrate large language models into everyday productivity tools.

Role Overview

ACTAI is hiring a Full Stack Engineer for AI Systems to create applications that manage conversations, workflows, and tasks with minimal user prompting. The role focuses on delivering high reliability, persistent context, and real-world task completion to reduce hallucinations in basic software.

Key Responsibilities

Develop end-to-end features spanning backend, frontend, and artificial intelligence integrations.
Create agent workflows capable of managing multi-step planning, tool utilization, failure handling, and recovery.
Incorporate large language models, memory structures, and external tools into dependable production systems.
Implement real-time artificial intelligence interactions featuring streaming, latency constraints, and partial results.
Enhance system observability, fallback strategies, and overall operational reliability.
Partner with product, backend, and machine learning colleagues to deploy features from conception to production.

Requirements

Demonstrate strong background in both frontend and backend full stack engineering.
Possess solid knowledge of API architecture and system design principles.
Show past work experience involving artificial intelligence applications, retrieval-augmented generation systems, or large language models.
Exhibit capability in navigating ambiguity and executing pragmatic engineering choices.
Display strong ownership to guide features independently from initial ideas to production releases.
Adapt to fast-paced environments characterized by changing requirements.

Skills and Tools

Next.js
Python
Node.js
PyTorch
OpenAI, Anthropic, and open-source large language models
SQL and NoSQL databases
Kubernetes
Docker

About the Company

ACTAI builds proactive applications for users globally to bring intelligence to everyday tasks, organizing, and conversations without complex prompting. The organization values high talent density, independent execution, and collective decision-making within small teams.

How to Apply

To apply for this position, please visit the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the job located?

The position is located in Ireland.

What technologies are used in the tech stack?

The tech stack includes Next.js, Python, Node.js, PyTorch, OpenAI, Anthropic, open-source LLMs, SQL, NoSQL, Kubernetes, and Docker.

What is the interview process like?

The interview process consists of three to four interviews conducted through virtual meetings and/or onsite sessions, evaluated by technical team members.

What are the core responsibilities of the role?

Core responsibilities include building end-to-end product features, designing multi-step agent workflows, integrating LLMs and memory systems, managing real-time interactions, and improving system reliability.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site