#вакансия #fulltime #remote #python #reactnative

Vacancy: Full-Stack Engineer (React Native+Python (FastAPI)), Remote
Company: Mad Devs
Salary: 4000 - 4500$ gross
Work format: Full-time

We are looking for a Full-Stack Engineer to lead the development of a health tech platform for biomarker tracking.

Responsibilities
- Design, develop, and maintain the mobile application using React Native
- Build and optimize the FastAPI backend to handle health data processing
- Implement automated data extraction from lab reports using Vision APIs and OCR
- Architect and manage PostgreSQL databases for secure health record storage
- Integrate external services including Stripe, ShipStation, and SendGrid
- Own the full deployment pipeline and ship an MVP quickly

Requirements
- 5+ years of experience in full-stack development with a focus on mobile applications and backend systems
- React Native: Strong experience building and maintaining cross-platform applications
- Python (FastAPI): Solid experience developing REST APIs and backend services with a focus on performance and scalability
- PostgreSQL: Proficiency in database schema design, complex queries, and migrations
- AI-Assisted Development: Hands-on experience using AI coding tools (e.g., Cursor, Claude Dev, or similar) to improve development speed, code quality, and refactoring processes
- Figma to Code: Experience translating design mockups into responsive, high-quality user interfaces
- Third-Party Integrations: Practical experience integrating external services such as Stripe, ShipStation, SendGrid, Firebase, or similar platforms
- Languages: English - Intermediate/Upper-Intermediate (B1-B2); Russian- Upper-Intermediate (B2)
- Work Format: Full-time
- Location: any, except Russia and Belarus

Will be a plus
- Experience with OCR, Google Cloud Vision API, or Vision-Language Models (VLMs)
- Experience with HTML-to-PDF or similar report generation libraries
- Experience managing releases on the App Store and Google Play
- Domain Expertise: Background in Health Tech, Biotech, or subscription-based mobile products

Contact: @recruiter_maddevs

#вакансия #vacancy #remote #fulltime #lookfor

Vacancy: Middle+ Prompt Engineer, remote
Company: MAD DEVS
Salary: 4000-4500$ gross

We're seeking a Prompt Engineer to join our team. This is your chance to apply your skills to a project with real-world impact.

Responsibilities:
- System Prompt Architecture: Design complex, structured system prompts. Use Chain-of-Thought and Few-Shot techniques to solve complex logic tasks (e.g., "Diagnose this car issue based on the user's description")
- Structured Generation (JSON): Engineer prompts that reliably output valid JSON for API integrations. You must ensure the model follows schema constraints 100% of the time
- Voice Persona Design: Control the agent's tone and pacing. Use instructions to influence output, making the agent sound empathetic, professional, or urgent as needed
- Jinja2 Integration: Embed dynamic data into prompts. You must write prompts that are robust enough to handle empty variables or unexpected data formats ({{ user_history }})
- Optimization: Continuously A/B test prompts to reduce hallucinations and improve conversion rates (e.g., "Did the agent successfully book the meeting?")

Requirements:
- Deep LLM Expertise: You know the difference between GPT-4 and Claude 3 Opus. You understand token limits, temperature, and context windows
- Technical Proficiency: You are comfortable working with JSON and Markdown. You can write basic Jinja2 templates
- Analytical Mindset: You don't just "guess" improvements; you analyze conversation logs to find the root cause of errors
- Linguistic Precision: Excellent command of English to catch subtle nuances in interaction
- Language: Russian (Native/Fluent) and English (B2+)

Contact us: @recruiter_maddevs