AI Prompt Engineer / Content Builder (Junior)

Mobiva | Istanbul (Hybrid) | Full-time | New graduate – 1 year of experience

About Mobiva

At Mobiva, we build and scale AI-powered consumer applications across iOS, Android, and web platforms. We are an AI app studio that places the latest text, image, video, and audio models at the core of our products. Product, technology, growth, and monetization are developed entirely in-house.

We build the most trending AI products in the global market and develop product-market fit-focused applications that scale worldwide. AI music, AI photo, AI video, AI companion — whatever is trending in the global market, we build it one step ahead.

The Role

You will be the person who integrates every newly released model (GPT, Claude, Gemini, Midjourney, Suno, Veo, ElevenLabs, Runway, Sora, etc.) into our products the fastest. You'll spend most of your day writing and testing prompts, designing system prompt templates, and prototyping with new AI tools.

This role sits at the intersection of prompt engineering, rapid prototyping, and AI trend tracking. You'll work closely with our Senior PMs and engineering team to shape the AI layer of our products.

Responsibilities

Build production-grade system prompt and template libraries for the following AI generation pipelines: Text-to-Image (Midjourney, Flux, DALL-E, Stable Diffusion, Ideogram, etc.)
Text-to-Video (Sora, Veo, Runway, Kling, Luma, etc.)
Image-to-Video (Runway, Kling, Pika, Hailuo, etc.)
Text-to-Music (Suno, Udio, ElevenLabs Music, etc.)
Systematically document the prompt structures, parameter combinations, and style tokens for each model
Design prompt transformation layers that translate the same user input into prompts optimized for different models
Test and prototype newly released AI models and APIs within 24–48 hours
Track AI trends daily on X/Twitter, Reddit, TikTok, and Product Hunt; analyze viral products and adapt them for our portfolio
A/B test existing prompts to improve output quality and user retention
Prepare technical documentation and integration plans for the engineering team for new model integrations
Continuously iterate on prompts based on user feedback and product metrics
Conduct competitive analysis: reverse-engineer the prompt structures of competing AI products

Required Qualifications

New graduate or 1 year of experience in Computer Engineering, Software Engineering, or a related field
Genuine, hands-on experience with AI tools (ChatGPT, Claude, Midjourney, Suno, ElevenLabs, Runway, etc.)
Treats prompt engineering as an engineering discipline; can systematically analyze why a prompt works
Basic understanding of concepts like LLMs, diffusion models, embeddings, and fine-tuning
Organically follows the AI ecosystem (active participation in the Twitter/X AI community is a big plus)
Comfortable reading English technical documentation
Ability to iterate fast. This is the most critical trait for this role — we're looking for someone who can ship 5 prototypes in a day
Personal projects in AI products (GitHub, side projects, indie apps, Twitter threads, blogs)
Experience with prompts in a mobile/web consumer app context
Experience creating AI content for TikTok or Instagram
Active participation in Discord/Reddit AI communities

Why Mobiva

The opportunity to build the most trending AI products in the global market and bring them to millions of users
Experience developing product-market fit-focused applications that scale worldwide
A chance to work daily with the latest text, image, video, and audio models in an AI-first culture
A fast and disciplined product development pace built around shipping a product every sprint
The ability to iterate at a speed traditional companies cannot match for years
Close collaboration with product, AI, growth, and marketing teams
A work environment where decisions are made quickly, transparently, and based on data
We have a strong company culture and we actively work every day to develop it; every team member is both a participant in and a builder of this culture
A mindset that values experimentation, learning, and continuous iteration
All products are developed in-house, end to end

Important Note

Applications without hands-on mobile/web product development, monetization, and AI/LLM-based product development experience will not be considered.

(For this junior position: candidates who have taken at least one AI product from idea to prototype and can showcase it in their portfolio will be considered.)

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Prompt Engineer