--- title: 'Software Engineer, Agent Development at ActiveCampaign' canonical: 'https://feeny.ai/job/software-engineer-agent-development-activecampaign-krakow-mmqsezb39ngy' type: 'job' last_seen: '2026-09-08' --- # Software Engineer, Agent Development at ActiveCampaign - **Company:** ActiveCampaign - **Location:** Krakow, Poland - **Compensation:** PLN 184k–PLN 276k - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2026-03-05 - **Last confirmed live:** 2026-09-08 - **Apply:** https://jobs.lever.co/activecampaign/3e093aec-8540-49c7-93f1-719727c1191d ## Job description ActiveCampaign is seeking a Software Engineer to join our Kraków Hub and build production-ready AI agents for autonomous marketing. Our platform empowers businesses to automate their customer engagement — and we are now extending that with intelligent, agentic workflows that can reason, act, and adapt on behalf of our customers. Our first wave of agents is already in production. This role will drive the expansion, building the next generation of autonomous experiences across the full breadth of the platform. You 'll work at the intersection of solid software engineering and applied AI — designing, building, evaluating, and operating agents that run at scale in a production marketing automation platform. This means engineering rigor comes first: agents need to be reliable, observable, performant, and safe before they are clever. Our Kraków Hub houses multiple engineering teams — Forms, Integrations, Ecommerce, Agency, CRM, Mobile, CampaignsUI, and Content — working across different product pillars with a shared focus on building agentic workflows into all core functionalities across the platform. You will collaborate closely with these teams, understanding their domains and building agents that integrate seamlessly into the broader system, This is not a pure research or ML role. We need engineers who can build — end to end — from prompt design through backend orchestration to frontend integration, and who can ship, measure, and iterate fast. Our environment moves quickly — we value high ownership, tight feedback loops, and close cross-functional collaboration. If you thrive in a hands-on, high-pace setting where you build, ship, and iterate rapidly, this role is for you. What your day could consist of: - Designing and building production-grade AI agents and autonomous marketing workflows across the ActiveCampaign platform - Implementing multi-step agentic flows involving LLM orchestration, tool use, and integration with platform services - Working with LLM APIs (prompt engineering, response handling, evaluation) and building reliable, testable agent pipelines - Designing and running agent evaluations — building eval frameworks, defining quality metrics, and continuously measuring agent accuracy, reliability, and performance in production at scale - Monitoring and optimizing agent performance — latency, cost, token usage, error rates — and iterating rapidly based on production dataIterating on agent behavior based on user feedback, observability data, and quality metrics - Leveraging AI-assisted development tools and practices in your daily workflow — you don't just build AI features, you build with AI - Writing production-quality code in Python for agent services and backend orchestration - Contributing to PHP backend and frontend (React/Ember) integration points where agents interact with the core platform - Building and maintaining APIs, data flows, and service interfaces that agents depend on - Working iteratively — shipping code fast, learning from production, and improving continuously - Ensuring code quality through testing, code review, and adherence to engineering standards - Participating in on-call rotation for incidents related to agent services - Working closely with Product, Design, and domain engineering teams to define agent capabilities and user experiences - Engaging in pairing and code reviews across teams - Contributing to documentation of agent architectures, patterns, and best practices - Maintaining regular overlap with US-based teams (Chicago timezone) to ensure alignment and tight collaboration across the organization What we're looking for: - 2-4 years of experience in a software engineering role - Hands-on experience building and running AI agents or agentic workflows in a production environment — not just prototypes or side projects - Experience with agent evaluation and performance optimization — you know how to measure whether an agent is working well and how to make it better - Solid backend development skills in Python; working familiarity with PHP is a plus - Understanding of how to build reliable, testable, and observable systems - Active practitioner of AI-driven development — you use AI coding assistants and agentic development tools as part of how you work, not just what you build - Ability to work iteratively and ship code fast — you're comfortable with rapid release cycles and learning from production - Familiarity with DB technologies: MySQL, DynamoDB, Redis - Strong problem-solving skills and ability to work across multiple codebases and technologies - Fluent in English (B2 minimum) - Willingness to work flexible hours with regular afternoon availability to overlap with US Central timezone - Experience with agentic AI frameworks or multi-agent orchestration patterns - Familiarity with Model Context Protocol (MCP) or tool-use patterns for LLM agents - Experience building eval pipelines or quality measurement systems for LLM-based features - Frontend experience with React or EmberFamiliarity with AWS, CI/CD practices, and observability tooling - Understanding of prompt engineering, evaluation methodologies, or LLM fine-tuningExperience in SaaS, marketing automation, or CRM domain What we offer: - A front-row seat in ActiveCampaign's AI-first transformation — you'll build the autonomous marketing agents customers interact with - Collaboration with experienced engineers across the Kraków Hub, including senior and staff-level technical leadership - An environment that values ownership, fast iteration, and learning by doing - Active investment in AI-first engineering practices and tooling - Hybrid work model from our Kraków office with flexibility to adjust working hours for collaboration with US-based teams (Chicago timezone overlap) This is an exciting time to join ActiveCampaign as we build out our new office in Poland. You will be a large part of developing our office culture in this new Krakow hub location. About ActiveCampaign: ActiveCampaign is the autonomous marketing platform for people at the heart of the action. It empowers teams to automate their campaigns with AI agents that imagine, activate, and validate–freeing them from step-by-step workflows and unlocking limitless ways to orchestrate their marketing. With AI, goal-based automation, and 1,000+ app integrations, agencies, marketers, and owners can build cross-channel campaigns in minutes–fine-tuned with billions of data points to drive real results for their unique business. ActiveCampaign is the trusted choice to help businesses unlock a new world of boundless opportunities–where ideas become impact and potential turns into real results. As a global multicultural company, we are proud of our inclusive culture which embraces diverse voices, backgrounds, and perspectives. We don’t just celebrate our differences, we believe our diversity is what empowers our innovation and success. You can find out more about our DEI initiatives here. Perks and Benefits: At ActiveCampaign, we prioritize employees’ well-being and professional growth by cultivating a culture centered on collaboration and innovation. When you join our team, you’ll not only have the opportunity to make a significant impact, but also enjoy a range of benefits tailored to support your personal and career development. Here are some of the benefits 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. In addition, employees receive complimentary access to telehealth services, and a free subscription to Calm. -Growth & Development: Access to LinkedIn Learning, professional development programs, and career growth opportunities in a fast-growing organization. -Generous Paid Time Off: Recharge and take the time you need to maintain work-life balance. -Total Rewards: Pension scheme with matching up to 1.5% of your contribution, MultiSport Plus card to support your active lifestyle, home office stipend to cover your commuter or work from home expenses, and a four-week paid sabbatical with bonus after five years. -Collaborative Culture: Work alongside brilliant, passionate colleagues in an environment that values innovation, teamwork, and mutual support. ActiveCampaign is an equal opportunity employer. We recruit, hire, pay, grow, and promote no matter of gender, race, ethnicity, sexual orientation, marital status, political opinion, national origin, social origin, parentage, workers union membership, economic status, religion, age,  health condition, disability or any other grounds protected by law. Our Employee Resource Groups (ERGs) strive to foster a diverse inclusive environment by supporting each other, building a strong sense of belonging, and creating opportunities for mentorship and professional growth for their members. ## About ActiveCampaign ## Company Overview - **One-liner**: ActiveCampaign is an AI-first autonomous marketing automation platform that enables businesses to create personalized, cross-channel customer experiences. - **Entity Type**: Private (Series C) - **Headquarters**: Chicago, Illinois, United States - **Founded**: 2003 - **Founders**: Jason VandeBoom ## Core Business - **Primary industry/industries**: Marketing Technology (MarTech), SaaS, Customer Experience Automation - **Target customers**: Small to medium-sized businesses (SMBs), entrepreneurs, agencies, and enterprise organizations in 170+ countries - **Mission or purpose statement**: To help businesses get more out of their marketing and sales campaigns by automating tedious processes and delivering more engaging interactions across the customer journey. ## Products & Services - **ActiveCampaign Platform**: An AI-first autonomous marketing platform that orchestrates AI agents to handle email, SMS, WhatsApp, and social media campaigns. It includes built-in CRM, powerful automation workflows, and predictive analytics. - **Active Intelligence**: An AI layer that analyzes audience data and recommends personalized strategies, generates on-brand content, and optimizes campaigns automatically. - **CRM & Sales Engagement**: A built-in CRM with optional add-ons (Pipelines, Pipelines & Sales Engagement) for sales automation and pipeline management. - **Integrations**: Connects with 1,000+ apps across CRM, ecommerce, social media, and analytics. ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed - **Key Metric**: Annual Revenue of $198M (latest estimate) / Total Funding of $360M - **Notable Investors/Partners**: Tiger Global Management (led Series C), Susquehanna Growth Equity (led Series B), Silversmith Capital Partners (led Series A) - **Growth Signals**: - 180,000+ customers globally - 120+ billion experiences orchestrated in 2025 - 4 billion automated interactions every week on average - Grew from 30 to 1,000+ employees in three years - Doubled Annual Recurring Revenue year-over-year during its hypergrowth phase - 88% of customers say ActiveCampaign delivers value faster than competitors - 14,500+ positive customer reviews across aggregator platforms ## Competitive Advantages - **AI-first autonomous platform**: Active Intelligence 3.0 (Wavelength) provides goal-aware automations and AI agents that work across channels without heavy lifting. - **Proven scale and reliability**: Billions of data points and interactions processed weekly provide a robust, data-driven foundation. - **Customer-centric focus**: High customer satisfaction (88% say it delivers value faster) and a massive library of pre-built automation recipes. - **Multi-channel orchestration**: Seamlessly coordinates email, SMS, WhatsApp, and social media in a single platform. ## Strategic Focus - **AI and automation leadership**: Continued investment in autonomous AI features to reduce manual work for marketers. - **Global expansion**: Offices across Latin America, Europe, and APAC, with a workforce distributed across 20 countries. - **Product innovation**: Enhancing the platform with new channels (e.g., WhatsApp), deeper integrations, and more intelligent analytics. - **Scaling the team**: Hiring across engineering, product, sales, and marketing roles to support continued growth. ## Why Work Here - **Culture & Flexibility**: ActiveCampaign follows a hybrid work model with hubs in Chicago, São Paulo, Heredia, Ireland, Krakow, and Mexico. Some teams have specific in-office expectations, but flexibility is offered when needed. - **Perks & Benefits**: - Competitive compensation with regular salary reviews and equity for all employees upon hire - Comprehensive health benefits, mental health support (Calm app, telemedicine, Employee Assistance Programs) - Generous retirement programs with company matching - Family-focused support: Employee Resource Groups for parents, generous leave policies - Professional development: Full access to LinkedIn Learning, career development discussions - Quarterly stipend for fully remote team members - Mac computer and modern apps provided - Daily lunch perks, snacks, and transit benefits at offices - Donation matching and 3 days of Volunteer Time Off per year - Day off for local elections - **Engineering Culture**: Emphasis on building a powerful, scalable platform. Open roles include Staff Software Engineer, Data Software Engineer, and Software Engineer, Agent Development — indicating a strong focus on AI and data engineering. - **Global Team**: 800+ team members across 20 countries, providing a diverse and international work environment. ## Sources 1. [ActiveCampaign About Page](https://www.activecampaign.com/about) 2. [ActiveCampaign Careers Page](https://www.activecampaign.com/careers) 3. [ActiveCampaign Home Page](https://www.activecampaign.com/) 4. [ActiveCampaign LinkedIn](https://www.linkedin.com/company/activecampaign) 5. [ActiveCampaign Jobs on Lever](https://jobs.lever.co/activecampaign) ## Other roles at ActiveCampaign - [Account Executive - Trilingual](https://feeny.ai/job/account-executive-trilingual-activecampaign-sao-paulo-1gg6yjbgf0ed) — São Paulo, Brazil - [Manager, Customer Experience - Overnight](https://feeny.ai/job/manager-customer-experience-overnight-activecampaign-heredia-17gsgcxkp5x8) — Heredia, Costa Rica - [Senior AI Engineer](https://feeny.ai/job/senior-ai-engineer-activecampaign-united-states-j3537kxantpy) — United States - [Principal Product Manager](https://feeny.ai/job/principal-product-manager-activecampaign-united-states-hec1rdqedgz3) — United States - [Director of Product Marketing](https://feeny.ai/job/director-of-product-marketing-activecampaign-united-states-dqgg0rar3h3j) — United States - [Senior Data Software Engineer](https://feeny.ai/job/senior-data-software-engineer-activecampaign-krakow-ax9azfn2fp23) — Krakow, Poland - [Account Executive 2](https://feeny.ai/job/account-executive-2-activecampaign-chicago-ja39svh7gxta) — Chicago, IL - [Data Software Engineer](https://feeny.ai/job/data-software-engineer-activecampaign-krakow-ba2zsjj881zf) — Krakow, Poland - [Staff Software Engineer](https://feeny.ai/job/staff-software-engineer-activecampaign-krakow-8bez288qwp5c) — Krakow, Poland - [Growth Sales Representative](https://feeny.ai/job/growth-sales-representative-activecampaign-chicago-p32xxhb0wt3e) — Chicago, IL