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- Tasks: Lead final development of a marketplace app and prepare it for launch.
- Company: CHAAMO is a mobile-first platform for trading card collectors and sellers.
- Benefits: Equity-only position with potential for long-term success and tech leadership.
- Why this job: Join an exciting venture with a real product and make a meaningful impact.
- Qualifications: Experience in Flutter, APIs, and marketplace app architecture required.
- Other info: This role is perfect for entrepreneurial spirits ready to co-own a product.
The predicted salary is between 36000 - 60000 £ per year.
CHAAMO is seeking a Technical Co-Founder (Full-Stack) to help finalise our marketplace app and prepare it for launch. The platform is already built using Flutter and NestJS (Typescript), and is nearly ready for testing. We are looking for a hands-on technical partner to lead final development, optimise the stack, and help take CHAAMO to market.
This is an equity-only position for someone entrepreneurial who’s excited to co-own and co-launch a product with strong traction in an underserved niche.
About CHAAMO
CHAAMO is a mobile-first marketplace designed specifically for trading card collectors and sellers, from Pokémon and Magic: The Gathering to Yu-Gi-Oh! and sports cards. The current online selling experience is fragmented across general-purpose platforms, social media, and forums. CHAAMO brings everything into one intuitive mobile platform. With built-in listings, eBay API support, direct messaging, shipping, and payment features, we’re making buying and selling cards faster, easier, and community-driven.
What You’ll Do
- Finalise and Launch the App: Complete development of the existing Flutter app (iOS and Android), polish features, fix bugs, and prepare for testing.
- Own Backend Systems: Manage and extend our NestJS/NodeJS backend and ensure smooth data handling and business logic.
- Handle DevOps and Infrastructure: Use AWS (EC2, Lambda, RDS, SNS) to maintain and scale the system.
- Integrate APIs: Finalise integrations with eBay APIs, and implement Shippo for shipping and PayPal for transactions.
- Collaborate on Product Strategy: Work alongside the founding team to prioritise features and shape the post-launch roadmap.
- Prepare for Growth: Ensure systems are built to handle increased user traffic and data as the marketplace scales.
Frontend/Mobile: Flutter (iOS & Android)
Infrastructure: AWS (EC2, Lambda, RDS, SNS)
External Integrations: eBay APIs, Shippo (shipping), PayPal (payments)
Who You Are
We’re looking for someone with strong technical foundations and a builder’s mindset. You might be a solo developer, tech lead, or ex-startup engineer looking to step into a co-founder role.
You should:
- Have built and launched Flutter apps for both iOS and Android
- Know how to work with APIs, especially marketplace and logistics/payment APIs (e.g. eBay, Shippo, PayPal)
- Understand marketplace app architecture, listings, messaging, user accounts, search, etc.
- Be self-directed, organised, and ready to lead all aspects of technical development
- Be excited to join an early-stage venture and build something meaningful with real users in mind
What You’ll Get
- Co-Founder Equity: Join at a foundational level and share in the long-term success.
- Real Product, Not Just an Idea: Skip the MVP phase, we’ve already built the app and are nearly ready to test.
- Tech Leadership: You’ll define our stack, systems, and long-term technology direction.
Technical Co-Founder (Full-Stack – Flutter, NestJS, (TypeScript) employer: Job Traffic
Contact Detail:
Job Traffic Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Technical Co-Founder (Full-Stack – Flutter, NestJS, (TypeScript)
✨Tip Number 1
Network with other tech entrepreneurs and developers in your area, especially those who have experience with Flutter and NestJS. Attend local meetups or online webinars to connect with potential collaborators and gain insights into the startup ecosystem.
✨Tip Number 2
Showcase your technical skills by contributing to open-source projects or creating your own projects using Flutter and NestJS. This not only demonstrates your expertise but also gives you a portfolio to discuss during interviews.
✨Tip Number 3
Familiarise yourself with the marketplace app landscape, particularly focusing on trading card platforms. Understanding the unique challenges and opportunities in this niche will help you articulate your vision and strategies during discussions with CHAAMO.
✨Tip Number 4
Prepare to discuss your approach to scaling applications and managing infrastructure on AWS. Being able to demonstrate your knowledge of DevOps practices will be crucial in showing that you can handle the technical demands of the role.
We think you need these skills to ace Technical Co-Founder (Full-Stack – Flutter, NestJS, (TypeScript)
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Flutter, NestJS, and TypeScript. Include specific projects where you've built and launched apps, especially in a marketplace context.
Craft a Compelling Cover Letter: Write a cover letter that showcases your entrepreneurial spirit and passion for building products. Explain why you're excited about CHAAMO and how your skills align with their needs.
Showcase Relevant Projects: Include links to your portfolio or GitHub repositories that demonstrate your work with mobile apps and API integrations. Highlight any relevant experience with AWS and marketplace platforms.
Express Your Vision: In your application, articulate your vision for the future of CHAAMO. Discuss how you would approach finalising the app and preparing it for launch, showing your understanding of the market and user needs.
How to prepare for a job interview at Job Traffic
✨Showcase Your Technical Skills
Be prepared to discuss your experience with Flutter and NestJS in detail. Highlight specific projects where you've built and launched apps, focusing on the challenges you faced and how you overcame them.
✨Demonstrate Your Entrepreneurial Spirit
Since this is an equity-only position, it's crucial to convey your passion for building and launching products. Share examples of past ventures or projects where you took initiative and led development efforts.
✨Understand the Marketplace Landscape
Familiarise yourself with the trading card marketplace and its unique challenges. Be ready to discuss how CHAAMO can differentiate itself from competitors and what features you believe are essential for success.
✨Prepare Questions for the Founding Team
Engage with the interviewers by preparing insightful questions about their vision for CHAAMO. This shows your interest in the role and helps you assess if the company aligns with your goals and values.
