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- Tasks: Lead the development of a unique platform using Flutter and FastAPI.
- Company: Join Unknown Systems, a startup focused on exploring unexplained phenomena.
- Benefits: Enjoy equity, flexible hours, and a remote-first culture.
- Why this job: Be part of a mission-driven team shaping a global community product.
- Qualifications: 10+ years experience, with 5+ in Flutter, Python, and AWS required.
- Other info: Ideal for those who thrive in startup environments and love ownership.
The predicted salary is between 43200 - 72000 £ per year.
Unknown Systems is building Nanu, a groundbreaking platform that investigates unexplained phenomena through community-submitted experiences and AI-powered tools. We are 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 Full Stack Developer (Equity Only | Remote | Flutter + FastAPI) (London Area) employer: Unknown Systems
Contact Detail:
Unknown Systems Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Full Stack Developer (Equity Only | Remote | Flutter + FastAPI) (London Area)
✨Tip Number 1
Familiarise yourself with the specific technologies mentioned in the job description, especially Flutter and FastAPI. Consider building a small project or contributing to an open-source project using these technologies to showcase your skills.
✨Tip Number 2
Engage with the community around AI and community-driven platforms. Join relevant forums or social media groups where you can share insights and learn from others, which could help you connect with like-minded individuals at Unknown Systems.
✨Tip Number 3
Prepare to discuss your experience in startup environments during the interview. Think of examples where you've taken ownership of projects and how you've contributed to product evolution in previous roles.
✨Tip Number 4
Research Unknown Systems and their Nanu platform thoroughly. Understanding their mission and vision will allow you to align your answers with their goals and demonstrate your genuine interest in being part of their journey.
We think you need these skills to ace Senior Full Stack Developer (Equity Only | Remote | Flutter + FastAPI) (London Area)
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 enthusiasm for the role and the mission of Unknown Systems. Discuss how your background aligns with their needs and mention any experience you have with AI or community-driven platforms.
Showcase Relevant Projects: Include links to your portfolio or GitHub repositories that demonstrate your work with the technologies mentioned in the job description. Highlight specific projects where you took ownership and contributed to the architecture and infrastructure.
Prepare for Technical Questions: Anticipate technical questions related to Flutter, FastAPI, and database management. Be ready to discuss your problem-solving approach and how you've tackled challenges in previous roles, especially in a remote or flexible work setting.
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 culture.
✨Demonstrate Your Problem-Solving Skills
Prepare to discuss challenges you've faced in previous roles and how you overcame them. This could include technical hurdles or team dynamics. Showing your problem-solving approach will highlight your fit for a role that involves building something unique.
✨Align with Their Mission
Research Unknown Systems and their platform, Nanu. Be ready to express why you're excited about their mission and how your values align with theirs. This will show your genuine interest in the role and the impact you want to make.
