Interbranche GMBH

Experience: 5+ years

Work format: Remote / Hybrid / Office (flexible)

Employment type: Full-time / Part-time

Location: Not restricted

🔧 Responsibilities

• Develop and maintain backend services using Node.js
• Design and implement REST / GraphQL APIs
• Integrate, customize, and extend the Zoho ecosystem (Zoho CRM, Zoho Creator, Zoho Books, Zoho Desk, etc.)
• Implement server-side business logic and workflow automations
• Integrate third-party services and external APIs
• Optimize performance, scalability, and reliability
• Participate in system architecture and technical decision-making
• Maintain and enhance existing systems

✅ Requirements

• 5+ years of commercial development experience
• Strong proficiency in Node.js (Express, NestJS, or similar frameworks)
• Hands-on experience with Zoho Platform (CRM, Creator, Deluge, APIs)
• Solid understanding of REST, OAuth2, Webhooks
• Experience with databases such as PostgreSQL, MySQL, MongoDB
• Strong knowledge of asynchronous programming and event-driven architecture
• Experience integrating external services (payments, CRM, ERP, marketing tools)
• Ability to write clean, maintainable, and scalable code
• Experience working with Git

⭐ Nice to Have

• Experience with TypeScript
• Knowledge of Docker and CI/CD pipelines
• Experience with microservices architecture
• Background in FinTech, SaaS, or e-commerce projects
• Experience with complex Zoho integrations and migrations

💼 What We Offer

• Challenging and long-term projects
• Flexible working hours and location
• Competitive compensation (based on experience)
• Minimal bureaucracy and direct communication
• Real influence on architecture and technical decisions

About the Project

We are developing a custom web platform focused on performance, stability, and long-term maintainability.

The platform is built using PHP, MySQL, HTML, CSS, and JavaScript, with minimal use of third-party libraries and dependencies to maintain full control over the codebase.

We are looking for a senior full-stack developer to join the project on a part-time basis at the initial stage, with the possibility of increasing involvement over time.

Work Format

• Part-time
• 2–3 hours per day
• ~10–15 hours per month at the initial stage
• Flexible schedule

Responsibilities

• Develop and maintain backend functionality using PHP
• Implement frontend features using HTML, CSS, and vanilla JavaScript
• Design and optimize MySQL queries and schemas
• Work on end-to-end features (backend + frontend)
• Ensure clean, maintainable, and well-documented code
• Participate in architectural and technical decisions
• Improve performance, security, and code quality

Requirements

• 5+ years of commercial experience as a Full-Stack developer
• Strong expertise in PHP
• Solid experience with MySQL
• Confident knowledge of HTML5, CSS3, and JavaScript (vanilla)
• Experience working with minimal third-party dependencies
• Good understanding of web security best practices
• Experience with Git
• Ability to work independently and manage time effectively

Nice to Have

• Experience with legacy systems or custom platforms
• Performance optimization skills
• Basic DevOps or server-side experience
• REST API experience

What We Offer

• Flexible part-time collaboration
• Long-term project with potential workload increase
• High level of technical autonomy
• Clean, dependency-light architecture
• Competitive hourly compensation based on experience