Senior GTM Engineer

Location: Poland – Remote (Katowice requisition) Employment Type: Full-time, B2B Contract Compensation: PLN 12,000–22,000 net + VAT per month (B2B) About PubNub PubNub powers real-time interactive experiences that drive engagement, retention, and monetization. Our market-leading platform for real-time interactive apps enables customers to efficiently and effectively build, manage, and optimize engaging apps that captivate and delight users. Founded in 2012, PubNub is backed by notable investors like The Raine Group, Sapphire, Scale, Relay, Cisco, Bosch, Ericsson, and HPE. To date, over 2,000 companies worldwide, including Amazon, RingCentral, Gameloft, and DAZN, choose PubNub to build and enhance large-scale apps that launch quickly to engage, monetize, and retain users. At PubNub, you’ll enjoy the freedom of a remote-first environment paired with a collaborative culture designed to support your unique work style, so you can do your best work. About the Role We're looking for a Senior GTM Engineer to build the AI-powered tools, automations, and integrations that help PubNub's go-to-market teams operate more effectively. This is a hands-on engineering role combining software development, AI agents, automation, and business systems integration. You'll work across Marketing, Growth, Sales, and Customer Success, translating operational challenges into reliable technical solutions. You'll take ownership of projects from discovery and prototyping through production deployment, helping teams reduce repetitive work, improve data quality, accelerate execution, and make better-informed decisions. Success means delivering production-ready tools and automations that are adopted by teams and create measurable business impact. Key Responsibilities • Design, build, deploy, and maintain AI-powered tools, agents, and workflow automations for go-to-market functions. • Develop internal applications and integrations that improve prospecting, account research, lead enrichment, campaign execution, and customer intelligence. • Partner with business stakeholders to understand workflows, identify bottlenecks, and prioritise engineering opportunities. • Build and maintain integrations with CRM, marketing automation, analytics, and other business systems. • Develop and maintain web-based applications and website infrastructure that support Marketing and Growth initiatives. • Use LLM APIs, AI coding assistants, and agent-based development workflows to accelerate engineering productivity. • Ensure solutions are maintainable, reliable, secure, and suitable for production use. • Measure tool adoption, operational efficiency, and business outcomes, iterating based on stakeholder feedback. About You Minimum Requirements • Strong professional software engineering experience, ideally involving full-stack development, internal tools, automation, or growth engineering. • Hands-on experience with JavaScript or TypeScript and modern web frameworks such as React or Next.js. • Strong experience working with APIs, system integrations, and data-driven applications. • Practical experience building AI-powered applications, agents, or automations using LLM APIs. • Experience taking applications from prototype to production, including testing, deployment, maintenance, and troubleshooting. • Ability to understand business problems and independently translate requirements into working technical solutions. • Strong ownership, problem-solving, and cross-functional collaboration skills. • Strong English communication skills and the ability to work with technical and nontechnical stakeholders. Nice to Have • Experience integrating Salesforce, marketing automation, or revenue operations platforms. • Familiarity with AI coding assistants such as Claude C