HeroSoftware GmbH logo
HeroSoftware GmbH

Wir sind HeroSoftware. Wir machen Software, die im Alltag wirklich einen Unterschied macht. Unsere Shopify-Apps werden von über 4.000 Kunden weltweit genutzt und unterstützen Shopify Händler beim Wachstum.

Full Stack Entwickler/in (100% Remote)

Location

Germany

Posted

59 days ago

Salary

€45K - €75K / year

Seniority

Mid Level

Job Description

Full Stack Entwickler/in (100% Remote)

HeroSoftware GmbH

Als Full Stack Entwickler/in bist du in unserer Shopify Agentuar für die Entwicklung und Optimierung von unseren Shopify Apps verantwortlich. Im Zusammenspiel mit unserem Product & Design Team entwickelst du Apps, die über 3.900+ Merchants weltweit nutzen. Aufgaben So sieht dein Tag aus: - Planung, Architektur und Entwicklung von Shopify Apps, Plugins und API-Integrationen - Full-Stack-Entwicklung mit modernen Technologien im Frontend (React, Next.js) und Backend (Node.js, Express, TypeScript) - Anbindung von Drittanbieter-Systemen (ERP, Payment, CRM, Logistik etc.) über REST- und GraphQL-Schnittstellen - Sicherstellung von Performance, Code-Qualität und Skalierbarkeit - Umsetzung responsiver und zugänglicher UI-Komponenten - Durchführung von Code Reviews, Testing (Unit, Integration, E2E) und Debugging - Aufbau und Pflege von CI/CD-Pipelines sowie technische Dokumentation Qualifikation Das bringst du mit: - Mindestens 3 Jahre Erfahrung in der Full-Stack-Entwicklung - Sehr gute Kenntnisse in JavaScript, TypeScript, React, Next.js, Node.js und Express - Solides Know-how im Umgang mit Datenbanken (MongoDB, PostgreSQL oder MySQL) - Routine im Arbeiten mit Git, CI/CD, Docker und modernen DevOps-Workflows - Verständnis für UX/UI, API-Design, Security (OAuth, JWT, CORS) und Performance-Optimierung - (Optional) Erfahrung mit Shopify App Development, inklusive Polaris, Webhooks, OAuth und GraphQL API - Selbstständige, strukturierte und lösungsorientierte Arbeitsweise - Freude an Teamarbeit, technischem Austausch und Verantwortung - Strukturierte, eigenständige Arbeitsweise mit klarer Pipeline-Logik - Deutsch auf Muttersprachenniveau + gutes Englisch in Wort & Schrift Du + wir = Match, wenn du: - Eine echte Hunter-Mentalität mitbringst - Teil eines motivierten Teams sein möchtest - Erfolg nicht verwaltest, sondern aktiv vorantreibst - Wir uns auf dich verlassen können, genauso auch umgekehrt - Gerne auf der linken Spur der Extrameile unterwegs bis Benefits Dein Gehalt: - 45.000€ - 75.000€ - Fixgehalt + leistungsabhängige Provision Wir bieten dir: - Maximale Ownership und Vertrauen - 30 Tage Urlaub + Geburtstag & Weihnachten frei - Motiviertes Team & leistungsstarkes Umfeld - Flache Hierarchien mit kurzen Entscheidungswegen - 100% Remote, Office in Mannheim möglich - Team Events & Off Sites - Beste Apple Hardware “Konnten wir dein Interesse wecken?” Spaß - wenn du bis hier gelesen hast, sollten wir sprechen. PS: Bitte duze uns in deinem Anschreiben Liebe Grüße Victoria

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About Etera Etera is building the first AI-native corporate travel platform for the GCC market — designed from the ground up for how businesses in the region actually operate. We're a lean, high-conviction team replacing legacy TMCs with autonomous agents, real-time inventory, and a product experience that doesn't feel like it was designed in 2009. The Role We're looking for a Senior AI Fullstack Engineer who can own the full stack — from a smooth React Native mobile experience to TypeScript backend services and the AI/LLM layer that powers our multi-agent infrastructure (OPUS Prime). If you think in systems, ship fast, and find it natural to reason about both user-facing product and underlying model behavior, this role was built for you. What You'll Own - Mobile-first product: Build and maintain Etera's React Native app (Expo/TypeScript) — booking flows, real-time updates, multilingual UX (Arabic/English). - Backend services: Design and extend our TypeScript backend, including booking APIs, supplier integrations (PKfare, RateHawk, Hotelbeds), and webhook orchestration. - LLM integration: Work directly with Claude (Anthropic API) and our multi-agent OPUS Prime system — building, tuning, and extending AI pipelines for travel intent detection, QA, and automated engineering reports. - End-to-end delivery: Take features from spec to production. Own the full lifecycle — architecture, implementation, testing, deployment. - Infra & reliability: Firebase Auth (OTP, Apple, Google), EAS Build/TestFlight pipelines, and CI/CD hygiene across the stack. - Code quality: Participate in security audits and peer review within a small, high-trust engineering team. Tech Stack Frontend / Mobile: React Native + Expo, TypeScript, Firebase Auth (OTP, Apple, Google), EAS Build / TestFlight, Native iOS/Android context. Backend / AI: TypeScript (end-to-end), Anthropic API / Claude, Mastra (agent orchestration framework), LangChain (chains, tools, memory), Zeabur / cloud deployment, REST + Webhook integrations. You've Built and Run Agent Teams. Plural. This is not a role for someone who has experimented with LLMs on side projects. We're looking for engineers who have designed, shipped, and actively maintained multi-agent systems — and who understand what it takes to keep them reliable in production. - Proven agent team ownership: You have built one or more autonomous agent teams from scratch — defined their scope, wired their tools, managed inter-agent communication, and own their continued operation. - Self-validating mindset: You don't hand off agent output blindly. You act as the primary validation layer for the systems you build — designing evaluation criteria, catching failure modes, and iterating on agent behavior based on real output quality. - Cross-domain fluency: Your agents have touched multiple domains — not just one narrow use case. You can reason about agent behavior across booking logic, data quality, QA pipelines, code review, or content generation without needing a specialist in each area. - Maintenance discipline: You have a track record of keeping agent systems healthy over time — prompt drift, tool failures, context window management, regression testing. Not just shipping and moving on. - Full-stack integration: You connect agent teams to real product surfaces — not just notebooks or internal tools. Your work shows up in APIs, mobile interfaces, or backend workflows that real users depend on.

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