0.0
- 60.0
- 120.0
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About the Role:
Grafo.io is an AI-powered cold outreach platform that generates the most human-sounding messages on the market. We’re looking for a senior-level Ruby on Rails engineer to audit our existing production codebase, own key backend systems, and help us move fast as we scale.
This is a lean but meaningful role: you’ll report directly to the founder and help shape technical direction on infrastructure, security, feature delivery, and potential external integrations.
What You’ll Do:
Audit our existing Rails 7 codebase for structure, security, and maintainability Own core application logic across: Controllers, Services, and Jobs (background task orchestration) Models and data workflows tied to user messaging and enrichment Admin tooling (potential work in the /admin namespace) Help define and build a clean, lightweight internal API layer Assist with data flows involving email enrichment, scraping success/failure logging, and user engagement tracking Ship bug fixes and critical improvements rapidly Recommend architectural improvements as needed (e.g. service boundaries, job retry logic)
About You:
- 5+ years of professional experience with Ruby on Rails (ideally 6.x or 7.x)
- Deep comfort with monolith structure: models, services, jobs, mailers
- Strong understanding of background job architecture (Sidekiq, delayed job, etc.)
- Ability to audit code written by others and improve for security, clarity, and performance
- Experience writing or exposing APIs for internal use or 3rd party integrations
- Solid Git hygiene and comfort working async with minimal supervision
- Bonus: Familiarity with AI tools or prompt-based workflows Experience working with early-stage startups or solo-founder-led teams Understanding of enrichment or scraping systems
Stack Highlights:
- Ruby on Rails 7
- PostgreSQL
- Sidekiq
- JavaScript (minor frontend involvement)
Initial code audit + recommendations: $600 fixed project. Hourly/project-based after that.
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.
0.0
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Experienced Full Stack Developer ONLY to Build a Responsive Podcast Application that is Audio-based (NO VIDEO). This audio-based podcast application needs to be web-based only (No Mobile App). The Podcast needs to be safe and accessible to people worldwide, BUT the focus is on an American audience. I repeat. The focus is on a US-based audience, so the visual style of the Podcast Application should appeal to Americans. This Podcast will feature health-based and wellness content, so it needs to be beautiful with a world-class appeal fit for kings and peasants alike.
0.0
- 20.0
- 50.0
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We are seeking an expert-level Ruby on Rails developer with over 8 years of experience to join our team. The ideal candidate should have a proven track record of successful projects and deep knowledge of backend development. You will be responsible for building robust and scalable applications, ensuring high performance and responsiveness. If you are passionate about coding and can effectively solve complex problems, we would love to hear from you.