Latest AI JobsBrowse Jobs
bjakcareer logo

Full Stack Engineer, AI systems

bjakcareerUnited KingdomActAI Engineering
Apply on company site
Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Mid
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

This position suits software professionals who want to build proactive applications and agent workflows for users in the United Kingdom. The Full Stack Engineer, AI systems role at bjakcareer involves developing production-grade product layers for AI-native applications.

Role Overview

The Full Stack Engineer, AI systems role is based in the United Kingdom and centers on creating proactive applications that bring intelligence to everyday workflows without complex prompting. The position focuses on achieving high reliability, maintaining persistent context, and completing real-world tasks.

Key Responsibilities

Build end-to-end product features spanning frontend, backend, and AI integrations.
Design multi-step agent workflows that manage planning, tool usage, failures, and recovery.
Integrate large language models, memory, and external tools into dependable systems.
Create real-time artificial intelligence interactions featuring streaming, partial results, and strict latency limits.
Enhance system reliability, observability, and fallback mechanisms.
Work alongside machine learning, backend, and product teams to deliver features from conception to production.
Iterate constantly using real-world usage data and failure patterns.

Requirements

Strong background in full stack engineering covering both frontend and backend development.
Sound comprehension of system design and application programming interface architecture.
Practical background working with large language models, retrieval-augmented generation systems, or artificial intelligence applications.
Capacity to navigate ambiguity and execute pragmatic engineering choices.
High ownership capability to drive features from concept to production.
Adaptability for rapid environments featuring 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 who are unfamiliar with complex prompting, targeting tasks like conversations, errands, organizing, and workflows. The company focuses on persistent context, real-world task completion, and reducing hallucinations to free up time for meaningful activities. Operating as a small, hands-on, and high-talent-density group, the organization makes collective decisions and executes rapidly.

How to Apply

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

Skills and tech stack

Questions candidates ask

What is the location of the Full Stack Engineer, AI systems role?

The role is located in the United Kingdom.

What technologies are used in the tech stack?

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

What is the primary focus of the engineering work?

The work focuses on building end-to-end product features, designing agent workflows that handle planning and recovery, integrating large language models and memory, and ensuring high reliability for long-running workflows.

What does the interview process look like?

The interview process consists of 3 to 4 interviews conducted via virtual meetings and/or onsite after an initial fit assessment.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site