**Experienced Full Stack Marketplace Engineer – Customer & Partner-facing at arenaflex**

Are you a seasoned engineer with a passion for innovation and customer-centricity? Do you thrive in fast-paced environments where no two days are the same? If so, we invite you to join arenaflex as a Full Stack Marketplace Engineer – Customer & Partner-facing. In this role, you'll be at the forefront of shaping arenaflex's cutting-edge marketplace, collaborating with customers and partners to co-create innovative solutions that drive business success. **About arenaflex** arenaflex is a scale-up that's revolutionizing the way organizations connect with their frontline workers. With a platform that's as agile as a startup and a commitment to developer experience, we're empowering millions of workers worldwide to do their best work. Our open marketplace and modern extension points (APIs, webhooks, Embedded Apps, iPaaS connectors) enable customers to tailor arenaflex to any workflow, from shift scheduling to AI-powered language translation. **Your Role** As a Full Stack Marketplace Engineer – Customer & Partner-facing, you'll be part of a dynamic team that's passionate about delivering exceptional customer experiences. Your primary responsibilities will include: * Co-innovating with customers: Translate customer needs into use cases to deliver fully integrated solutions that meet their unique business requirements. * Rapid prototyping: Build proof-of-concept integrations using Embedded Apps, Authenticated Links, public APIs, webhooks, iPaaS tools, and AI Agents to bring ideas to life quickly. * Partner enablement: Moderate workshops with customers and Independent Software Vendors (ISVs), mentor partner developer teams, and work with our product teams to improve API extension points based on feedback. * Developer evangelism: Create plug-and-play integration templates, sample connectors, and code snippets for our ecosystem, publish how-to articles, participate in webinars, and speak at community events to showcase best practices. * Innovation scouting: Collaborate with strategic partners to test emerging technologies, such as agentic AI capabilities and retrieval-augmented copilots, to stay ahead of the curve. * Field feedback loop: Travel (up to ~1 week/quarter) to customers or events to innovate together and ship fast. **What We Look for in You** To succeed in this role, you'll need: * 5+ years of customer-facing experience in a technical role (engineering, presales, technical solutions, etc.) with a proven track record of working with technical partners or ISVs. * Strong communication skills in English (verbal and written). * A get-it-done mindset: Bias for action, ability to self-prioritize without waiting for PM/UX direction. * Full-stack fluency: Proficiency in at least one backend technology (Java, Python, Node, or Ruby) and either experience with frontend technologies (TypeScript and React) or a willingness to learn them. Familiarity with REST/GraphQL APIs and OAuth flows. * Ability to travel up to ~1 week/quarter to customers, partners, or events. **Bonus Points** If you have: * Published apps on Slack, Teams, Shopify, Atlassian, or similar marketplaces. * Experience with iPaaS platforms (Workato, Zapier, Make). * Knowledge of workforce-tech domains (scheduling, payroll, HR systems, etc.). **What We Offer** As a valued member of our team, you'll enjoy: * Competitive salary. * Phone and Home Internet costs reimbursement up to 80 PLN/month. * Private health care package with Luxmed – covered for you and partially for your partner/family. * Cafeteria benefits – monthly budget to cover sport cards or other purchases. * Creative Allowance – paid as 1000 PLN gross/month. * Home office set-up reimbursement up to 1000 PLN. * Personal Learning and Development Budget of 1500 USD/year. * Sabbatical Program – 1 month paid leave at 3, 6, 10 year tenure. * 26 days of annual leave/year. * 2 Mental Health days off per year. **Who We Are** arenaflex believes in the potential of every single employee. That's why we've built the essential platform for frontline workers. We help organizations digitally enable their frontline, to boost productivity, quality, and safety, and be more agile. **Join Our Team** If you're passionate about innovation, customer-centricity, and collaboration, we invite you to apply for this exciting opportunity. Please submit your application, and let's shape the future of arenaflex together! **Apply Now** Apply for this job