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Fullstack Developer

MannaAmsterdam, Noord-Holland, Netherlands
On-site Full-time

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Experience Level

Mid to Senior

Qualifications

What We Are Looking For:4+ years of experience in backend product development (PHP/OOP or similar). Proficient in designing scalable data models and writing efficient SQL queries. API-first mindset with experience in REST/JSON, webhooks, cron jobs, queues, and logging/monitoring. Hands-on experience with AI technologies, particularly with OpenAI / Anthropic APIs, or similar. Structured and organized, able to maintain documentation and manage releases effectively. Commercial instinct, with a passion for building solutions that enhance revenue, margin, and retention. Fluent in English; proficiency in Dutch is a bonus, but not mandatory. Preferred Qualifications:Experience with Python or Node.js in addition to PHP. Familiarity with marketing, ad-tech, lead-gen, CRM, or CDP platforms. Knowledge of CI/CD, Docker, and observability tools like Sentry or ELK. Understanding of Composer, PSR standards, and PHPUnit.

About the job

About Manna

Manna, located in Amsterdam, specializes in large-scale, performance-driven lead generation. The company purchases traffic on platforms like Meta and Google, using proprietary funnels to deliver qualified leads to enterprise partners in sectors such as hearing care, home improvement, insurance, and meal delivery throughout the EU and North America.

The in-house platform, LeadExpert, powers these operations by routing, validating, and managing every lead. This system is central to Manna's technical edge in the industry.

Role Overview: Fullstack Developer

Manna is expanding its engineering team to support a roadmap focused on new platform features, deeper partner integrations, and AI-driven enhancements. The Fullstack Developer will take ownership of significant roadmap items, with the chance to influence both revenue and the company’s move toward an AI-first approach.

What You Will Do

  • Develop new platform features from idea to production, always considering operational priorities.
  • Integrate AI solutions by deploying production-ready LLM integrations within the platform and related tools.
  • Handle API and data integrations, connecting partner endpoints, webhooks, and CRM systems smoothly.
  • Maintain platform reliability by identifying root causes of issues and supporting consistent release cycles.
  • Improve the system with thorough bug fixes and structural updates.
  • Take full-stack responsibility, focusing mainly on backend work (PHP/MySQL) and enhancing the admin UI (HTML/CSS/JS, currently jQuery).
  • Offer technical guidance, sharing insights on architecture, tooling, and AI-related decisions.

Location

This role is based in Amsterdam, Noord-Holland, Netherlands.

About Manna

Manna is a pioneering company specializing in performance-driven lead generation. By utilizing advanced technologies and strategies, we successfully connect enterprise partners with high-quality leads across various sectors. Our commitment to innovation and excellence makes us a leading player in the industry.

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