Staff Software Engineer — AI-First Platform Leader

ActiveCampaign; Kraków; On-site; PLN 120,000 - 150,000; Full time

Benefits offered by this job

Comprehensive health benefits

Access to LinkedIn Learning

Generous paid time off

Pension scheme with matching

Collaborative work environment

Job summary

A leading marketing platform is seeking a Staff Software Engineer in Kraków. You will drive technical direction and architect scalable AI features across the platform. The ideal candidate has over 8 years of experience in software engineering, with deep knowledge in PHP and AI-driven development. This role not only requires technical expertise but also the ability to mentor and support the business's strategic goals. Enjoy a comprehensive benefits package while being part of a vibrant, innovative culture.

Qualifications

• 8+ years of software engineering experience with high-impact results.
• Deep production experience in PHP and modern backend technologies.
• Experience designing autonomous agents and LLM integrations.

Responsibilities

• Drive technical direction across multiple teams at Kraków Hub.
• Architect scalable AI features and workflows.
• Identify and resolve platform-wide bottlenecks.

Skills

Software engineering experience

Multi-stack mastery in PHP

Backend technologies

AI and Agentic development

Technical advisory skills

CI/CD experience

Fluency in English (B2)

Tools

AWS

React

Ember

MySQL

DynamoDB

Redis

Job description

A leading marketing platform is seeking a Staff Software Engineer in Kraków. You will drive technical direction and architect scalable AI features across the platform. The ideal candidate has over 8 years of experience in software engineering, with deep knowledge in PHP and AI-driven development. This role not only requires technical expertise but also the ability to mentor and support the business's strategic goals. Enjoy a comprehensive benefits package while being part of a vibrant, innovative culture.