Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Lead the development of an innovative platform using Flutter and FastAPI.
- Company: Join Unknown Systems, a pioneering company focused on unexplained phenomena.
- Benefits: Enjoy equity in a high-potential startup and flexible remote work options.
- Why this job: Be part of a unique project that shapes a global community-driven product.
- Qualifications: 10+ years of experience, with 5+ in Flutter, Python, and AWS required.
- Other info: This is an equity-only role ideal for those passionate about early-stage building.
The predicted salary is between 48000 - 84000 £ per year.
Company: Unknown Systems
Location: Remote (London-based preferred)
Job Type: Equity-Only | Part-Time or Flexible Hours
About the Role
Unknown Systems is building Nanu, a groundbreaking platform that investigates unexplained phenomena through community-submitted experiences and AI-powered tools. We’re looking for a Senior Full Stack Developer to join us at a pivotal moment. This is an equity-only role perfect for someone excited by early-stage building, who wants to help launch something truly unique.
You’ll Be Responsible For:
- Leading frontend and backend development of the Nanu platform
- Building scalable features using Flutter and FastAPI
- Collaborating closely with our founder and lead developers
- Contributing to architecture, infrastructure, and product evolution
- Helping shape the future of a global community-driven product
Our Tech Stack:
- Frontend: Flutter (iOS, Android, Web)
- Backend: FastAPI, Python
- Database: PostgreSQL
- Auth: AWS Cognito
- Infra: Redis, Alembic, SQLAlchemy, Pydantic, Pytest
- AI: OpenAI API integrations
- Feed: Multi-factor ranking system for personalised content
You’re a Great Fit If You:
- Have 10+ years of experience (min 5+ with Flutter, Python, AWS)
- Love building clean, scalable, production-ready apps
- Thrive in startup environments and take ownership
- Are curious, open-minded, and mission-driven
- Bonus: experience with AI, community platforms, or content moderation
What We Offer:
- Equity in a high-potential, early-stage company
- Flexible hours and remote-first culture
- Influence over product and technical direction
- A chance to build something that truly matters
Senior Fullstack Developer - Fully Remote employer: Unknown Systems
Contact Detail:
Unknown Systems Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Fullstack Developer - Fully Remote
✨Tip Number 1
Familiarise yourself with the tech stack mentioned in the job description. Make sure you can confidently discuss your experience with Flutter, FastAPI, and Python during any conversations or interviews.
✨Tip Number 2
Showcase your passion for startup environments. Be prepared to share examples of how you've taken ownership in previous roles and contributed to early-stage projects.
✨Tip Number 3
Highlight any relevant experience with AI or community-driven platforms. This could set you apart from other candidates and demonstrate your alignment with the company's mission.
✨Tip Number 4
Network with professionals in the startup and tech communities. Engaging with others in these fields can provide valuable insights and potentially lead to referrals for the position.
We think you need these skills to ace Senior Fullstack Developer - Fully Remote
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Flutter, FastAPI, and Python. Emphasise any relevant projects or roles that showcase your ability to build scalable applications and work in a startup environment.
Craft a Compelling Cover Letter: In your cover letter, express your excitement about the equity-only role and the opportunity to contribute to a unique platform like Nanu. Mention your passion for unexplained phenomena and how your skills align with the company's mission.
Showcase Relevant Projects: Include links to your portfolio or GitHub repositories that demonstrate your work with the technologies mentioned in the job description. Highlight any projects that involved community-driven platforms or AI integrations.
Prepare for Technical Questions: Anticipate technical questions related to your experience with Flutter, FastAPI, and AWS. Be ready to discuss your approach to building scalable features and your experience with database management and infrastructure.
How to prepare for a job interview at Unknown Systems
✨Showcase Your Technical Skills
Be prepared to discuss your experience with Flutter and FastAPI in detail. Highlight specific projects where you've built scalable applications, and be ready to demonstrate your understanding of the tech stack mentioned in the job description.
✨Emphasise Your Startup Experience
Since this role is in a startup environment, share examples of how you've thrived in similar settings. Discuss your ability to take ownership of projects and adapt to changing requirements, as this will resonate well with the company's needs.
✨Demonstrate Your Passion for the Mission
Unknown Systems is looking for someone who is mission-driven. Make sure to express your enthusiasm for building community-driven products and how your values align with their vision for Nanu.
✨Prepare Questions About the Role
Have thoughtful questions ready about the company's goals, the team structure, and how they envision the future of the Nanu platform. This shows your genuine interest in the role and helps you assess if it's the right fit for you.
