Senior Fullstack Developer - Fully Remote
Senior Fullstack Developer - Fully Remote

Senior Fullstack Developer - Fully Remote

Ashton-under-Lyne Freelance 60000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead the development of an innovative platform using Flutter and FastAPI.
  • Company: Join Unknown Systems, a startup focused on exploring unexplained phenomena.
  • Benefits: Enjoy equity in a promising venture 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: Ideal for those passionate about startups and making a meaningful impact.

The predicted salary is between 60000 - 84000 £ 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 Fullstack Developer - Fully Remote employer: Unknown Systems

At Unknown Systems, we pride ourselves on being an exceptional employer, particularly for those passionate about innovative technology and community-driven projects. Our fully remote work culture offers unparalleled flexibility, allowing you to balance your professional and personal life while contributing to a groundbreaking platform. With equity opportunities and a collaborative environment, you'll not only influence the future of Nanu but also enjoy significant growth potential as we embark on this exciting journey together.
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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 industry, especially those who have experience in equity-only roles. They might provide insights or even referrals that could help you land the job.

We think you need these skills to ace Senior Fullstack Developer - Fully Remote

Flutter Development
FastAPI
Python Programming
PostgreSQL Database Management
AWS Cognito Authentication
Redis
Alembic
SQLAlchemy
Pydantic
Pytest
AI Integration (OpenAI API)
Frontend and Backend Development
Scalable Application Design
Startup Environment Adaptability
Collaboration and Teamwork
Problem-Solving Skills

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 database management. Be ready to discuss your approach to building scalable features and your experience in leading development projects.

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 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 goal of investigating unexplained phenomena.

✨Prepare Questions About the Role

Have thoughtful questions ready about the Nanu platform and its future direction. This shows your genuine interest in the role and helps you assess if the company aligns with your career goals.

Senior Fullstack Developer - Fully Remote
Unknown Systems
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  • Senior Fullstack Developer - Fully Remote

    Ashton-under-Lyne
    Freelance
    60000 - 84000 £ / year (est.)

    Application deadline: 2027-05-27

  • U

    Unknown Systems

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