Freelance Prompt Engineers in Berlin

Freelance Prompt Engineers in BerlinFreelance Prompt Engineers in Berlin

Projects People

Berlin, Germany

AI Creative Professional |Art Direcor |Sr. Product Desiger

23: Followers

AI Creative Professional |Art Direcor |Sr. Product Desiger

Cover image for Character-Consistent AI Video Ads at Scale

Character-Consistent AI Video Ads at Scale

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Cover image for Portfolio (https://contra.com/portfolio)

Portfolio (https://contra.com/portfolio)

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Cover image for Time to Feel- Timber and John Campaign

Time to Feel- Timber and John Campaign

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Cover image for Automated Car Commercial Generation Workflow

Automated Car Commercial Generation Workflow

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Prompt Engineer(3)

Berlin, Germany

Enhance relationship between product and users

Enhance relationship between product and users

Cover image for GPT Image 2.0 → Mechanical

GPT Image 2.0 → Mechanical Collectible Toy Prompt Generate a premium wind-up mechanical collectible toy inspired by [Character] designed in the style of a cute Japanese capsule toy collectible. Depicted in their most iconic pose, gesture, stance, or action from their original universe, instantly recognizable to fans. Oversized rounded head, stylized proportions, simplified facial features, compact body, smooth vinyl-plastic construction, adorable yet faithful interpretation of the character. Signature hairstyle, outfit, weapons, accessories, powers, and visual motifs carefully adapted into toy form. Authentic wind-up toy mechanism, playful mechanical engineering details, highly collectible gashapon aesthetic, smooth sculpted surfaces, glossy painted finish, vibrant colors matching the character's signature palette. Dynamic pose conveying the character's personality and role, premium blind-box collectible quality, Japanese toy-store aesthetic, product photography, centered composition, soft diffused studio lighting, subtle shadows, ultra-detailed craftsmanship, photorealistic 3D render, masterpiece. Aspect Ratio 1:1

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Cover image for GPT Image 2.0 → Products

GPT Image 2.0 → Products inspired by Capsule Corp. Prompt Generate a futuristic [Brand Product] designed by a fictional advanced tech megacorporation, inspired by Capsule Corporation aesthetics, sleek rounded industrial design, glossy white shell with vibrant blue and orange accents, integrated holographic interfaces, capsule technology motifs, premium materials, soft glowing lights, advanced technology seamlessly integrated into everyday life, ultra-detailed, cinematic product photography, realistic PBR materials, studio lighting, sharp focus, centered composition. Display the product on a clean solid background. At the bottom center of the image, display the official logo above the text "[Brand Product] — Inspired by Capsule Corp." The logo must be accurate, clean, and proportionally sized. Premium advertising layout, minimal distractions, perfectly centered composition, high-end futuristic product showcase, 1:1 aspect ratio.

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Cover image for GPT Image 2.0 → Chinese

GPT Image 2.0 → Chinese Dough Figurine Prompt Generate a highly detailed traditional Chinese dough figurine (Mianren) inspired by [Character], handcrafted from colorful sculpted dough, authentic Chinese folk-art craftsmanship, vibrant hand-shaped details, expressive facial features, iconic costume and accessories reinterpreted in traditional Chinese style, smooth painted surface, ornamental patterns, dynamic pose, intricate miniature sculpture, cultural festival craftsmanship, exquisite artisan quality, collectible folk-art figure, museum-quality display piece, rich colors, elegant decorative base, ultra-detailed textures, soft studio lighting, clean background, photorealistic, masterpiece, 3D render Aspect Ratio 1:1

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Cover image for GPT Image 2.0 → Labubu

GPT Image 2.0 → Labubu Toys Prompt Generate an image of a premium designer toy in the style of Labubu, inspired by [Character], adorable mischievous expression, signature wide grin with sharp little teeth, oversized head, large expressive eyes, fluffy textured fur, stylized character proportions, iconic outfit and accessories reimagined in cute collectible toy form, highly detailed vinyl art toy, playful pose, designer toy aesthetic, luxury blind-box collectible, smooth matte finish, subtle fabric and fur details, vibrant colors matching character's signature palette, product photography, centered composition, clean studio background, soft diffused lighting, ultra-detailed craftsmanship, highly collectible, Pop Mart-inspired aesthetic, photorealistic, 3D render, masterpiece. Aspect Ratio 1:1

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Prompt Engineer(13)

Prateek Pulastya

Berlin, Germany

I find your vulnerabilities before attackers do.

New to Contra

I find your vulnerabilities before attackers do.

Cover image for Guardrail Service is a production-grade

Guardrail Service is a production-grade LLM input validation system built to detect prompt injection and jailbreak attacks before they reach a language model. It uses a two-tier pipeline — a sub-millisecond rule engine powered by Aho-Corasick pattern matching, followed by a quantized DeBERTa transformer exported to ONNX for semantic attack detection at ~20ms. The service runs as an internal HTTP API built with FastAPI, containerized with Docker, and monitored via Prometheus and Grafana. It includes an adversarial test suite of 100+ prompts achieving 95%+ detection accuracy with under 5% false positives, and a live dashboard showing real-time validation, pipeline flowchart, and benchmark results.

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Cover image for TryHackMe LLM Exploitation Walkthrough

TryHackMe LLM Exploitation Walkthrough

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Cover image for RAG Pipeline Generation

RAG Pipeline Generation

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Cover image for Developed an AI threat detection

Developed an AI threat detection system designed to identify and mitigate risks in Large Language Model (LLM) environments. The platform analyzes user inputs in real time to detect prompt injection, jailbreak attempts, and malicious patterns using rule-based and heuristic techniques. It integrates automated testing workflows to simulate adversarial scenarios and continuously evaluate model behavior. The system includes logging and monitoring capabilities to track suspicious activity and measure performance metrics such as detection accuracy and latency. This solution demonstrates practical implementation of AI security principles, enabling safer deployment of AI systems by proactively identifying vulnerabilities and enforcing guardrails against misuse.

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Prompt Engineer(1)

Berlin, Germany

AI & Data Specialist Python, SQL, LLMs, Airflow, Power BI.

AI & Data Specialist Python, SQL, LLMs, Airflow, Power BI.

Cover image for AI Agents with LangGraph

AI Agents with LangGraph

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Cover image for AI Resume Matcher

AI Resume Matcher

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Cover image for AI-Generated Technical Service Bulletins for EVs

AI-Generated Technical Service Bulletins for EVs

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Prompt Engineer(1)

14542 Werder, Germany

Design the Experience. Deliver the Outcome.

Design the Experience. Deliver the Outcome.

Cover image for Every December I sit with the same question: “What actually ...

Every December I sit with the same question: “What actually changed in my life this year?” This time, instead of doing it alone, I asked ChatGPT to act as a facilitator — and the clarity that came out of it surprised me. I turned the process into a kit so you can try it too:a thoughtful prompt + a Miro template to organise your reflection. ✨ Your Year Personal Reflection Kit If you need a gentle moment to make sense of your year, let me know and I’ll send it your way.

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Cover image for Goal Planning Pro Edition
Miro template
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Goal Planning Pro Edition Miro template A complete quarterly planning system for product teams, built inside a single Miro board. Plan your objectives, track progress through the quarter, run a structured retrospective, and close the quarter with AI-generated reports and slides. Everything your team needs, in one place, built to use again every quarter. Includes a 7-step planning workshop, a full OKR tracking table, a retrospective workshop, six Miro AI Flows, and pre-filled demo content so you can see exactly how a completed quarter looks before you run your first one. Demoed live at Miro Canvas London 2026.

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Cover image for Last Sunday, my daughter got

Last Sunday, my daughter got sick. During her nap, I built something I've needed for two years. Every time she gets a fever, we do the same thing: Open a shared Notes app Title it something like "here we go again" And start logging temperature readings and medicine. If you've ever had to alternate paracetamol and ibuprofen every 4 hours while sleep-deprived, you know the fear of mixing things up. So I turned our little shared notes into an app. Little Fever is a gentle fever tracker for (tired) parents. Log temperatures. Log medicine. See the trend. Know when the next dose is possible. Shareable between caregivers. Nothing more than what you need at 2am. It's live at https://lnkd.in/dXdz7Ghz (https://lnkd.in/dXdz7Ghz)Built by a mother and a designer who had never shipped her own product before. 💜

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Cover image for I'm launching my new newsletter

I'm launching my new newsletter today. Join 100+ founders and designers to get weekly: - Short, practical notes on UX and product strategy (no fluff) - Frameworks for clarity and alignment - Early access to tools I use with clients And get access to my Signal Prioritisation jam Miro template. https://www.carolpoll.design/notes-by-carol

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Prompt Engineer(1)

Vincent Weckerle

Berlin, Germany

High-end product visuals for modern brands. @VARIADY

New to Contra

High-end product visuals for modern brands. @VARIADY

Cover image for KRUNCH – Product Launch Visuals
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KRUNCH – Product Launch Visuals A product visualization concept created for KRUNCH Pretzel Crunch. Designed to support social media and advertising campaigns through bold colors, snack-focused storytelling, and campaign-ready product imagery.

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Cover image for ZESTA – Product Launch Campaign
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ZESTA – Product Launch Campaign A visual concept for a fictional beverage brand. Created as a paid social campaign focused on acurate label consistency, summer vibes, and product-focused advertising visuals.

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Cover image for ZESTA – Product Launch Campaign
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ZESTA – Product Launch Campaign A visual concept for a fictional beverage brand. Created as a paid social campaign focused on acurate label consistency, summer vibes, and product-focused advertising visuals.

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Cover image for Rosée de Luxe – Product

Rosée de Luxe – Product Launch Campaign A visual concept for a fictional luxury fragrance brand. Created as a paid social campaign focused on premium aesthetics, romantic storytelling, and product-focused advertising visuals.

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Prompt Engineer(5)