0.0
- 15.0
- 30.0
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We’re seeking an experienced Ruby on Rails developer to build and maintain a modern web application. You’ll develop full-stack features, optimize database performance, implement APIs, and collaborate with our team through agile development processes.
**Required Skills:**
- 3+ years of professional Ruby on Rails development experience
- Strong understanding of MVC architecture and Rails conventions
- Proficiency with database design and optimization (PostgreSQL preferred)
- Experience with front-end technologies (HTML5, CSS3, JavaScript, Stimulus/Turbo)
- Familiarity with version control (Git) and deployment processes
- Knowledge of testing frameworks (RSpec, Capybara, Factory Bot)
- Understanding of security best practices and performance optimization
**Nice to Have:**
- Experience with cloud platforms (AWS, Heroku, Digital Ocean)
- Knowledge of Redis, Sidekiq for background job processing
- Familiarity with Docker and containerization
- Experience with CI/CD pipelines
**Project Details:**
- Timeline: 3-6 months (with potential for long-term engagement)
- Commitment: 20-40 hours per week
- Communication: English proficiency required, overlap with CET timezone (Berlin) preferred
**To Apply:**
If you are not agency then:
Please include your relevant Ruby on Rails experience, portfolio/GitHub links, and availability.
10.0
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-
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I’m looking for an experienced backend developer to help fix a specific issue in our project. The task involves resolving a bug in one of our API endpoints — it’s returning incorrect data due to a logic or validation problem.
🔍 Tech Stack:
Node.js with NestJS (or Express)
PostgreSQL (via Sequelize or TypeORM)
RESTful APIs
✅ Task Details:
Identify and fix the issue in the affected API
Ensure the fix does not break related functionality
Provide a short explanation of the issue and how you resolved it
You’ll be given access to a focused part of the codebase with clear instructions. Looking for someone who can get in, solve the problem effectively, and write clean, reliable code.
If you're confident working with backend logic and API layers, send a quick proposal with an example of a similar fix you've handled.
1500.0
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-
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📋 Project Overview
Looking for an experienced Shopify app developer to build a cart abandonment recovery tool that automatically generates personalized videos and sends them via email.
Detailed project specifications and business requirements will be shared with selected candidates.
⚙️ Technical Requirements
🎯 Core Functionality
1. Shopify App: Rails backend + React frontend
2. Webhook Integration: Respond to cart abandonment events
3. Video Generation: Create 30-second videos with customer name overlay, include product images from cart, add pre-recorded audio track, use FFmpeg for video processing
4. Email Delivery: Send videos via Shopify Marketing API
💻 Tech Stack
Ruby on Rails (backend), React.js (frontend), AWS S3 (video storage), FFmpeg (video processing), Shopify Admin API & Marketing API, Database for tracking cart/video data
🔧 Key Features
Cart value threshold filtering, Basic admin dashboard with metrics, Video generation queue/status tracking, Simple recovery rate reporting
📦 Deliverables
1. Working Shopify app ready for testing
2. Admin interface for configuration
3. Basic documentation
4. Tested on development store
✅ Requirements
1. Portfolio: Must show previous Shopify apps
2. Experience: FFmpeg/video processing required
3. Timeline: 3-4 weeks
4. Budget: Max $1,500 USD
📝 To Apply
Include:
1. Links to Shopify apps you've built
2. Your technical approach for video generation
3. Realistic timeline breakdown
4. Any questions about requirements
Looking for quality MVP delivery within budget. Ongoing work possible for successful candidate.
0.0
- 15.0
- 55.0
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We run thewinnr.com, a live competition and digital asset platform where:
Businesses and individuals can enter skill-based competitions to win unique collaborations with celebrities.
Hosts can sell digital assets such as social media engagement, shoutouts, and exclusive online experiences.
Our platform is Ruby on Rails-based with integrated payments, digital asset delivery, and a custom admin dashboard. We’re looking for a highly experienced Rails developer to handle ongoing maintenance, bug fixes, feature updates, and performance optimisations (approximately 6–7 hours per month) with huge growth potential.