Fullstack Developer m/f Freelance

Impact Labs AG • Zürich, CH • 21h ago

null Intro

Calling all Senior Developers: Are you looking for a new challenge? How would you like to join an innovative team and help develop a meaningful product that makes a difference in society? If you are a passionate developer eager to learn and grow, apply now and work with us!

21 Impact Labs AG is an innovative software company based in Zurich that develops solutions using cutting-edge technologies. We inspire, live innovation, and create products in the field of brain health. Our team consists of creative minds, lateral thinkers, and problem solvers – and we’re looking for you to complete our team and share our vision of building a future with fewer mental health challenges.

Tasks

- Creating the Web-UI for our Premium Product API integration

- Improving general UI

Requirements

Core Technologies (Required)

Frontend Framework: Next.js 14+ with App Router
Language: TypeScript (strict mode)
Styling: Tailwind CSS 3.4+
UI Components: Radix UI + shadcn/ui component library
State Management: React hooks, custom hooks
Form Handling: React Hook Form with Zod validation
Icons: Lucide React

Authentication & Security

Authentication: AWS Cognito integration
Session Management: NextAuth.js
Protected Routes: Middleware-based route protection
Role-based Access: Subscription-based content access

Payment Integration

Payment Processing: Stripe integration
React Stripe.js components
Subscription management
Webhook handling
Payment intent creation

API Integrations (Complex)

BrainHealth Index API: GraphQL integration with external API
Complex assessment workflows
Real-time progress tracking
Results visualization
WebSocket connections
Real-time audio processing
Speech visualization components
AWS Services:
S3 for file uploads (profile images)
DynamoDB for data storage
SES for email notifications
Secrets Manager for configuration

Development Tools

Build System: Next.js with custom webpack config
Linting: ESLint with Next.js config
Package Manager: npm
Development: Hot reload, TypeScript strict mode
Containerization: Docker support

Benefits

Flexible working hours with remote work options.
Modern infrastructure and a Bring-Your-Own-Device (BYOD) policy.
Close collaboration within an innovative, interdisciplinary team.
Active support for developing your professional and personal skills.
The chance to work on a meaningful product that provides societal value.

Closing

Our mission: Better Brain – Better Life! Join us in driving positive change through innovative technologies.

Are you ready to become part of the 21 family and leave your mark in this growing field? We look forward to your application!

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