Senior Software Engineer Job at ActiveCampaign (Krakow)

Senior Software Engineer

ActiveCampaign

Location:
Poland , Krakow

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

224000.00 - 336000.00 PLN / Year

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Job Description:

As an Associate Software Engineer, you will be working directly with one of our product teams to develop high-visibility features for the AC Platform. Our software engineers contribute to AC by partnering with product design teams, working alongside other engineers to develop features, identify bugs, and implement key product changes to enhance our platform that serves our customers.

Job Responsibility:

Developing high-visibility features for the AC Platform
Building and enhancing features across the Agency platform including partner tooling, multi-account management, and API services in PHP
Designing and implementing agentic AI workflows that automate and enhance partner and reseller experiences
Integrating LLM-powered capabilities into core Agency features
Contributing to our Python-based AI agent development and iteration
Driving productization — evolving Agency features to be more scalable and configurable for diverse partner needs
Maintaining and evolving legacy codebases while driving modernization efforts
Working with cross-functional teams including Product, Design, and other engineering squads
Engaging in pairing and code reviews
Participation in the on-call rotation for incidents

Requirements:

4+ years of work experience in a backend software engineering role
Demonstrated knowledge of the challenges of scaling SaaS systems
Experience writing production code in PHP following accepted coding standards
Experience with Python for backend services or AI/agentic workflows
Familiarity with DB technologies: MySQL, DynamoDB, Redis
Strong problem-solving skills and ability to work across multiple codebases and technologies

Nice to have:

Experience building or integrating AI/ML systems, LLM-powered features, or agentic workflows
Deeper database expertise — query optimization, data modeling, schema design, or experience with data pipelines and analytics infrastructure
Familiarity with CI/CD practices and patterns
Knowledge of AWS (or any public cloud)
Experience with API design and platform/partner ecosystem development
Track record of identifying and delivering performance improvements in production systems
Experience with SaaS productization

What we offer:

Comprehensive Health & Wellness: Top-tier benefits package that includes medical and dental benefits paid 100% by ActiveCampaign for you and 50% for your dependents, and reimbursements on vision expenses
Complimentary access to telehealth services
Free subscription to Calm
Growth & Development: Access to LinkedIn Learning, professional development programs, and career growth opportunities
Generous Paid Time Off
Total Rewards: Pension scheme with matching up to 1.5% of your contribution
MultiSport Plus card
Home office stipend to cover your commuter or work from home expenses
Four-week paid sabbatical with bonus after five years
Collaborative Culture

Additional Information:

Job Posted:
May 10, 2026

Employment Type:

Fulltime

Work Type:

Hybrid work

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