Job Closed

This listing is no longer active.

HeroSoftware GmbH - Shopify Apps logo
HeroSoftware GmbH - Shopify Apps

Shopify apps powering 3.000+ merchants

Senior Full Stack Entwickler/in, Vollzeit

Full-stack EngineerSoftware EngineerFull TimeRemoteSeniorTeam 1-10Since 2025H1B No SponsorCompany SiteLinkedIn

Location

Germany

Posted

111 days ago

Salary

€50K - €80K / year

Seniority

Senior

Job Description

Senior Full Stack Entwickler/in, Vollzeit

HeroSoftware GmbH - Shopify Apps

• Planung, Architektur und Entwicklung neuer Features für unsere SaaS-Plattform (Ticket-System, AI-Automation, Multi-Channel-Inbox, Retourenportal, Help Center, Live Chat) • Full-Stack-Entwicklung mit Next.js 15 (App Router), React 19, TypeScript und PostgreSQL • Integration von KI-Modellen (OpenAI, Anthropic, Google GenAI) inkl. Function Calling, RAG und Streaming • Anbindung von Drittanbieter-Systemen (Shopify, Stripe, Gmail, WhatsApp, Instagram, Messenger, Slack, DHL, JTL, Klaviyo) über REST- und GraphQL-Schnittstellen • Entwicklung und Optimierung unserer Multi-Channel-Kommunikation (E-Mail, WhatsApp, Instagram DMs, Facebook Messenger, Live Chat) • Sicherstellung von Performance, Code-Qualität und Skalierbarkeit in einer Multi-Tenant-Architektur • Umsetzung moderner UI-Komponenten mit Tailwind CSS v4, Radix UI und Framer Motion • Mitarbeit an unserem Visual Workflow Builder (ReactFlow) für automatisierte Antwort-Logiken

Job Requirements

  • Mindestens 3 Jahre Erfahrung in der Full-Stack-Entwicklung
  • Sehr gute Kenntnisse in TypeScript, React, Next.js (App Router) und Node.js
  • Solides Know-how im Umgang mit PostgreSQL (Queries, Migrations, Connection Pooling)
  • Erfahrung mit REST- und GraphQL-APIs sowie OAuth2-Flows
  • Verständnis für AI/LLM-Integration (OpenAI API, Streaming, Function Calling) – oder starke Bereitschaft, dich einzuarbeiten
  • Erfahrung mit Tailwind CSS und komponentenbasierten UI-Bibliotheken (Radix UI, Shadcn o.ä.) (Bonus)
  • Erfahrung mit Shopify APIs, Stripe Billing, Cloudflare R2, oder Messaging-APIs (WhatsApp Business, Instagram Graph API) (Bonus)
  • Kenntnisse in Vektordatenbanken (Qdrant) und RAG-Systemen
  • Selbstständige, strukturierte und lösungsorientierte Arbeitsweise
  • Freude an Teamarbeit, technischem Austausch und Verantwortung
  • Deutsch auf Muttersprachenniveau + gutes Englisch in Wort & Schrift

Benefits

  • 30 Tage Urlaub + Geburtstag & Weihnachten frei
  • Maximale Ownership und Vertrauen
  • Motiviertes Team & leistungsstarkes Umfeld
  • Flache Hierarchien mit kurzen Entscheidungswegen
  • 100 % Remote, Office in Mannheim möglich
  • Team Events & Off Sites
  • Beste Apple Hardware
  • Arbeit mit einem modernen Tech-Stack (Next.js 15, React 19, AI/LLM-Integration, Multi-Channel-Architektur)

Related Job Pages

More Full-stack Engineer Jobs

Malt logo

Senior Fullstack Engineer

Malt

Malt is the leading freelance consulting marketplace in Europe.

Full TimeRemoteTeam 201-500Since 2013H1B No Sponsor

• You’ll go beyond coding, you’ll apply your product-centric mindset. • You'll be instrumental in shaping features from conception to deployment, ensuring they align with our users' needs and our business goals. • As a Senior Fullstack engineer at Malt, you will join a specialized squad (composed of Software engineers, Product Designer and Product Manager). Each squad is responsible for a specific business domain and will handle the full development cycle.

France
Full TimeRemoteTeam 51-200H1B No Sponsor

• Own the software design and technology for a technical area of Labyrinth Screening. • Collaborate with the wider engineering teams, technology, product leaders and customers to establish requirements, design and deliver high quality software. • Incorporate engineering principles and methodologies into the broader organisational decision-making process to ensure problem definition, solution development and quality assurance are effectively integrated into our business outcomes. • Take a leading role in Labyrinth Screening’s engineering organisation: contributing to standards, design patterns and technology approaches across our technical teams. • Ensure consistent application of architectural decisions and guidelines across Ripjar's software products.

United Kingdom
PerformYard logo

Full Stack Software Engineer

PerformYard

PerformYard is a provider of performance management software that helps companies streamline hiring and recruiting while simplifying processes for employees. Th

• Participate in the full application development lifecycle, with a focus on writing clean, efficient and reusable code. • Own development of features, manage implementation of code and enhance product usability and consistency within the product. • Build new features using React, Javascript, Python, MongoDB, Docker • Collaborate on and develop the UI/UX and product capabilities of our employee performance SaaS product • Contribute to our API and maintain API-based connections with other, related systems • Identify and resolve performance bottlenecks • Collaborate directly with founders as well as the Collaborate closely with product management, QA, and other engineering team members • Understand internal and customer requests and creatively implement those features into PerformYard production software • Contribute to our full stack including AWS infrastructure that delivers our products to users worldwide.

Virginia
10x Banking logo

Senior Software Engineer

10x Banking

The world's most powerful cloud native core banking platform

Full TimeRemoteTeam 501-1,000H1B No Sponsor

• Be part of something bigger – join us and transform and industry. • As a Software Engineer at 10x, you are passionate about working with cutting-edge technologies, and bring deep technical knowledge and proven experience with data systems to deliver scalable solutions. • This particular role is with the team responsible for building and running the interest calculation and fees and charges components. • Services run by this team are required to calculate in excess of 10 million interest accruals every night and post tens of millions of pounds worth of interest each month. • Calculations are completed in less than 20mins and the team achieve this using a highly parallelizable Elastic Map Reduce cluster. • Additionally, to the technical side of the role, you bring experience and wisdom in mentoring junior developers and proven experience in the challenges of delivery of high-quality software in a high-performance and fast paced development environment. • You will be keen to solve problems beyond the borders of your immediate team and demonstrate that you can think on multiple levels; from strategic and tactical to driving operational excellence and system availability. • You are adept at reading code and designing and delivering systems that can exceed the exacting demands of our clients.

Hungary
Job Closed