Full-Stack Engineer – AI-Driven Development

This is a fully remote position, open to applicants in Germany.

📋 Description

• Co-manage a segment of MMT's media-planning platform, including areas like Media Planning, Reporting Center, Data, or API.

• Collaborate end-to-end across both backend and frontend with a compact team of engineers and client relations.

• Determine what features will be developed and how they integrate.

• Translate customer requirements and business objectives into clear guidance.

• Oversee the long-term architecture, quality, and user value of the designated area.

• Troubleshoot production issues and address customer concerns.

• Participate in design decision-making.

• Work closely with users, client relations, and other departments.

• Influence engineering processes for collaborating with AI coding agents.

• Manage team backlogs and collectively set work priorities.

• Make technical choices considering the difficulty of reversing them.

• Collaborate with area teams and share insights.

• Develop and sustain software for media agencies and advertisers to plan, execute, and evaluate campaigns.

⛳️ Requirements

• Experience in developing and managing web applications across both backend and frontend.

• Ability to identify high-quality code, including that authored by others.

• Strong understanding of Ruby on Rails, Phoenix Framework, or a similar web framework.

• Proficient in a frontend framework such as React, Vue.js, or Angular.

• Well-versed in a relational database like PostgreSQL.

• Practical experience with AI coding agents such as Claude Code, Codex, or Cursor.

• Realistic perspective on the strengths and limitations of AI coding agents.

• Excellent written communication abilities.

• Commitment to testing, maintainability, and architectural integrity.

• Openness to rejecting modifications that, while functional, do not align with the architecture.

• Capability to engage with users and convert ambiguous requirements into specific acceptance criteria.

• Proficiency in English and/or German; English serves as the company language.

• Authorization to work and reside in Germany, or a willingness to relocate.

• Familiarity with Elm, Elixir, or multi-tenant SaaS applications is advantageous.

• Background in media or advertising is a plus.

🏝️ Benefits

• Flexible working hours with the option for remote work up to 100%.

• A laptop equipped with either Linux or Mac.

• Company-funded access to top AI coding agents.

• Subsidized public transportation ticket (Deutschlandticket).

• Subsidized gym membership (Hansefit).

• Job bike leasing options available.

• Company pension scheme.

• Regular performance reviews, feedback sessions, and development discussions.

• Opportunities to attend conferences, trade shows, tech events, and training programs.

• Time allocated to experiment with new AI tools and methods of working.

• Support for onboarding with experienced colleagues.

• Monthly company gatherings, celebrations, game nights, and cultural events.

• Flexibility in working hours and autonomy in task completion.

• Space and time dedicated to personal growth and learning new skills.