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About the Role

As a Product Engineer, you will own products and features end-to-end, acting as the bridge between technical implementation, product design, and user experience. You will work directly on Ojin, building everything from high-end interactive frontends to complex backend agentic systems, helping to define solutions, design architecture, and ship to users.

Responsibilities

• Drive features and projects from abstract concepts to production deployment, taking ownership across UI/UX design, product logic, and technical implementation.
• Architect and build core web infrastructure using TypeScript, React, and Node.js, ensuring user-facing applications are responsive, intuitive, and robust.
• Develop and maintain Python backends for AI capabilities, including proxy services, agentic systems, and conversational AI flows.
• Design scalable backend systems, considering trade-offs around performance and scalability.
• Collaborate closely with founders, designers, and other engineers, acting as a key voice in shaping the product roadmap and technical strategy.

Requirements

• 3-5 years of professional software development experience.
• Startup experience is a must.
• Strong hands-on skills in Frontend (React, TypeScript) and Backend (Node.js, TypeScript).
• Proficiency in Python and experience or strong ambition to build backend systems for AI agents and conversational interfaces.
• Enthusiasm for UI/UX, product design, and making customer-centric trade-offs.
• Rigor to design complex systems that scale.
• Professional fluency in English, both spoken and written.

Skills

• TypeScript
• React
• Node.js
• Python
• UI/UX design
• Product design
• System architecture
• WebRTC
• WebSockets
• Infrastructure-as-Code (IaC)
• AWS CDK
• AWS

Location

• Berlin
• Remote (CET +/- 2h)

Work Type

• Full-time
• Remote

Experience Level

• 3-5 years

Benefits

• 28 days of paid vacation
• 1 additional mental health day per year
• Annual education budget of €900
• Home office equipment provided

About the Company

• Ojin is The Human AI Company, building the infrastructure that makes AI feel human.
• Our Human Agents deliver natural, lifelike conversations in real time, powered by proprietary models and blazing-fast APIs on a globally distributed GPU fabric.
• We have delivered award-winning work with brands including BMW, H&M, and Clinique.
• Our new platform will define how the world experiences AI.

Equal Opportunity

• Ojin is committed to creating a diverse and inclusive workplace where everyone is treated with dignity, respect, and fairness.
• We value diversity in all its forms, including but not limited to race, ethnicity, gender, sexual orientation, age, religion, national origin, disability, and veteran status.
• We believe that a diverse and inclusive workplace leads to better business outcomes, stronger relationships with our customers and partners, and a more fulfilling work experience for our employees.