Remote Fullstack AI Developer

Digistore24 GmbH; Delaware; Remote; USD 80,000 - 120,000; Full time

Job summary

Join a cutting-edge AI team with a successful German high-tech company as a full-stack engineer. You will focus on backend AI integration and modern frontend development, creating exceptional user experiences while enjoying a flexible remote working environment. Bring your expertise in PHP and enthusiasm for AI to innovate our products.

Benefits

Flexible working hours

Continuous learning opportunities

Modern equipment provided

Team collaboration and events

No dress code

Flat hierarchies

Qualifications

• Proven experience in full-stack web development with a focus on PHP.
• Comfortable with AI technologies and OpenAI APIs.
• Ability to build complex automation workflows.

Responsibilities

• Develop and maintain PHP middleware for AI integration.
• Build and enhance frontend components driven by AI tools.
• Design and implement workflow automations using n8n.

Skills

PHP

AI Integration

REST API

Workflow Automation

Database Management

Frontend Development

Education

Bachelor's degree in Computer Science or related field

Tools

n8n

Zapier

Job description

Are you a highly skilled full-stack engineer with a passion for creating exceptional user experiences? We’re looking for someone with strong expertise in back-end and AI technologies to join our AI team at Digistore24. If you thrive in a dynamic environment and are eager to innovate, we want to hear from you.

About Digistore24

Your new dream job

• Backend AI Integration into PHP-based Systems: Develop, expand, and maintain PHP middleware that connects our AI solutions with Zendesk and Digistore’s backend systems
• Frontend Feature Development with AI Capabilities: Build and enhance modern frontend components—optionally powered by AI tools—to enable interactive, intuitive user experiences for both internal and external applications
• Tool-Based Workflow Automation (e.g., n8n): Design, implement, and maintain process automations using workflow tools like n8n. This includes triggering actions via APIs, managing webhooks, and ensuring seamless orchestration across internal and third-party systems
• Set Up and Maintain Databases: Configure, monitor, and maintain relational databases that support the integration middleware, ensuring efficient data access, transformation, and storage for AI-powered features and backend services
• Sustain and Extend Integration Codebase: Take full ownership of the PHP-based middleware layer that acts as the connective tissue between AI services and Digistore’s platform—ensuring long-term stability, scalability, and performance

Your superpower

• Expertise in PHP and full-stack web development: Proven experience in building and maintaining scalable applications with PHP backends, databases and modern frontend tech.
• AI affinity and OpenAI ecosystem familiarity: Comfortably uses AI APIs like OpenAI, with practical understanding of prompt engineering and AI capabilities.
• API and niddleware integration proficiency: Skilled in connecting services via APIs and integrating third-party platforms with internal systems.
• Tool familiarity (n8n, Zapier, etc.): Ability to build complex automation flows with tools like n8n, with a deep understanding of event triggers and webhooks.
• Flexibility and willingness to take on challenges: Openness to handle tasks outside core expertise when needed, showing motivation and contributing to team goals in unfamiliar areas.
• PHP (Symfony or custom frameworks): Advanced-level backend engineering skills, ideally with experience in maintaining larger codebases and crafting robust middleware logic.
• REST API & Webhook Integration: Comfort with designing and integrating APIs, handling authentication flows (OAuth2, API keys), and managing error resilience.
• Database and Data Layer Management (SQL, NoSQL, Elasticsearch, etc.): Proficient in managing and interacting with various types of data systems, including relational databases (e.g., SQL), NoSQL stores (e.g., MongoDB), and search-optimized data layers (e.g., Elasticsearch).
• Skilled in data modeling, querying, transformation, and extraction using appropriate tools (e.g., SQLAlchemy, Pandas), supporting scalable integrations and AI-enhanced features.
• n8n, Make.com or Similar Workflow Tools: Building and maintaining workflow automations connecting Digistore systems with 3rd party apps.

This position is NOT for you if

• ... you lack strong PHP development experience: This role centers on working within a PHP-based middleware, robust backend PHP experience is critical.
• ... you want to train or deploy AI models: This is not an ML Ops or model-training role, focus is on AI integration, not research or deployment pipelines.
• ...you are not comfortable with automation platforms like n8n: Daily work involves process orchestration, understanding these tools is essential.
• ... you are not confident developing full-stack features alone: The role involves both backend and occasional frontend contributions—autonomy is expected.
• ... you struggle to translate AI potential into product features: While deep AI knowledge isn’t required, you must be fluent enough to identify valuable applications and integrate them.

You will play a crucial role in shaping our cutting-edge projects in our collaborative work environment – while enjoying flexibility in working time and location.

• Enjoy the flexibility of working from your home office, provided you have uninterrupted internet access
• Benefit from regular further education and continuous learning opportunities
• Experience the stability of a highly successful German high-tech company, funded by its product success and not by its investors
• Regular further education
• The stability of an extremely successful German high-tech company that is funded by its successful product and not by investors
• Work in outcome-focused teams with a culture of direct feedback
• Modern equipment: Utilize modern equipment in a flexible and international work setting
• International, collaborative team with strong cohesion
• Engage in spectacular Engage in spectacular team events across various European countries. across various European countries
• Enjoy autonomy from day one, with a friendly, informal atmosphere.
• Work in your team on a first-name basis, without a dress code, and at eye level
• Flexible working hours from Mondays to Fridays
• Flat hierarchies and short decision-making paths: our co-founders are part of our team - we operate on our own without external investors and reinvest everything we generate
• Regular on-the-job training - You decide for yourself what you need for your further development, in consultation with the team lead
• Personal responsibility from day one: With us, you are not a cog in the system, but an important part of an A-player team and are personally encouraged (and challenged!) by the team lead, including in monthly one-on-one meetings

The team behind Digistore24

Your next steps

Does this role sound like your dream job? At the same time, can you resonate with our values ?

BEFORE you apply please check out our values as we will talk about them in our first interview, so please be prepared. Are you ready to live them?

Fill out the application form on the next page, include your salary expectations, and submit your complete application documents – consisting of your cover letter, your resume, and your salary expectation.

• 1 - Your application
  Have you found your dream job? Then click on "Apply", fill out the form, upload your documents, and submit everything. Your complete application documents consist of your cover letter, your resume, and your salary expectation.
• 2 - Your tial project
  Demonstrate in a trial project that you're an asset to us!
• 3 - Your introduction interview
  If you've impressed us, we'll invite you to an introductory video call with the HR team. This conversation offers you an initial opportunity to learn more about your dream position and introduce yourself.
• 4 - Your lead interview
  If we feel like you are a great fit, then we will invite you to a video interview with your future team lead.
• 5 - Your Get-to-know day
  Have you made a great impression? We will invite you for a fully remote trial day to explore our compatibility in terms of culture and working style.
• 6 - Your offer
  Is everything aligned on both sides? Congrats! You'll soon be officially part of the Digistore24 team.

Your onboarding

Before you start, we will provide you with all necessary working materials - including sending you office equipment, such as a laptop, to your home.

You’ll receive on-the-job onboarding and all the support you need to be successful! From day one, you will tackle real-life problems hands-on to learn about our code and software. We will provide coding sessions and code reviews to build our collective knowledge.