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Full Stack Engineer, AI systems

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

About this role

ACTAI is hiring a Full Stack Engineer, AI Systems based in Poland to build production-grade workflows for proactive applications. This role suits professionals experienced in full stack development who want to design reliable, multi-step agent systems.

Role Overview

ACTAI seeks a Full Stack Engineer, AI Systems for a full-time position located in Poland. The professional joining this organization will construct the product layer that transforms proactive application capabilities into dependable production workflows. Responsibilities include designing operational frameworks for agents, managing failures, ensuring recovery, and delivering consistent value to users.

Key Responsibilities

Construct end-to-end product features spanning frontend components, backend architecture, and AI integrations.
Plan agent workflows that manage multi-step planning, tool utilization, failure handling, and recovery.
Incorporate large language models, memory modules, and external utilities into systems that function reliably in real-world scenarios.
Formulate real-time artificial intelligence interactions featuring data streaming, partial result generation, and strict latency boundaries.
Enhance system dependability, observability, and fallback procedures.
Partner with machine learning, backend, and product groups to release features from conception to completion.
Refine operations iteratively based on actual usage patterns and failure scenarios.

Requirements

Demonstrated background in full stack development covering both frontend and backend domains.
Comprehensive knowledge of system architecture and application programming interface design.
Practical exposure to large language models, retrieval-augmented generation systems, or artificial intelligence applications.
Capacity to navigate ambiguity and execute pragmatic engineering choices.
High degree of ownership to drive features from initial concepts to production environments.
Adaptability within fast-paced settings characterized by changing requirements.

Skills and Tools

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

About the Company

ACTAI develops proactive applications designed to assist users with conversations, errands, organization, and workflows with minimal prompting. The organization focuses on high reliability for long-running workflows, persistent context, and real-world task completion to minimize hallucinations and help individuals manage daily life.

How to Apply

Candidates interested in this opportunity should apply directly on the official company careers page.

Skills and tech stack

Next.jsPythonNode.jsPyTorchOpenAIAnthropicSQLNoSQLKubernetesDockerLLMLLMsRAG

Questions candidates ask

Where is the Full Stack Engineer, AI Systems position located?

The role is located in Poland.

What technologies and frameworks are used in this role?

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

What are the primary responsibilities for this position?

Responsibilities include building end-to-end product features, designing agent workflows for planning and recovery, integrating LLMs and memory systems, creating real-time AI interactions, and improving system reliability.

What kind of interview process should candidates expect?

Candidates will go through 3 to 4 interviews conducted via virtual meetings or onsite, evaluated by technical team members.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site