Backend And Blockchain Developer

RELYzIT; Dubai; Remote; USD 60,000 - 90,000; Part time

Job summary

RELYzIT is hiring a Freelance Backend and Blockchain Developer for an exciting integration project in Dubai. This role demands extensive experience in backend engineering and blockchain technologies, with the opportunity to make significant contributions to a next-generation platform. Qualified candidates should demonstrate robust skills in Node.js and Stripe integration, along with strong collaborative and communication abilities.

Qualifications

• 5+ years of experience in backend development.
• Proficient in Node.js, REST APIs, and Solana.
• Fluent in English, with strong communication skills.

Responsibilities

• Finalize backend integrations and ensure payment API synchronization.
• Set up role-based credential logic and validate ticket data.
• Collaborate with cross-functional teams for QA and testing.

Skills

Backend Development

Node.js

REST APIs

Serverless Architecture

Solana

Firebase Authentication

Stripe Integration

Twilio

Azure Functions

Communication

Tools

Azure Cosmos DB

Firebase

Twilio Chat

Job description

Backend and Blockchain Developer (Freelance) - Ongoing - Dubai-Belgium

At RELYzIT Talent, we don t recruit we build. We place elite engineers and product minds into mission-critical roles across Infrastructure, Security, Data, Applied AI, and Product Development in the EU and GCC. Every placement is about real outcomes, not just filling seats. All candidates are vetted through our AI-driven, multi-layered 7-Signals Talent Engine ensuring every professional we back is a precision-fit, high performer. If you re a builder, not a clock-puncher, you re in the right place.

About the Role

Our client is seeking a Freelance Backend and Blockchain Developer to drive the final integration and secure delivery of a next-generation platform. You ll work at the intersection of backend engineering and blockchain, collaborating closely with Design, Frontend, and the CTPO to ensure seamless, secure, and scalable solutions. This is a freelance, remote-first opportunity with immediate impact perfect for builders who thrive on ownership and rapid delivery.

Why This Role Matters

This role is pivotal in bringing a high-stakes product to life. You ll be responsible for ensuring robust backend integrations, secure access controls, and flawless end-to-end testing. Your work will directly influence the platform s reliability, security, and user experience making you a key driver of business outcomes and client success.

Key Responsibilities

• Finalize backend integrations, ensuring Stripe payment APIs sync accurately with status APIs
• Validate ticket data and status fields across all user flows
• Set up secure, role-based credential logic for Admin, Organizer, Partner, and Consumer roles
• Implement Twilio Chat APIs, scoped per user role and context
• Refactor and consolidate backend endpoints under api.[domain].io
• Support full QA and end-to-end testing in collaboration with Design, Frontend, and Product teams
• Collaborate daily with cross-functional teams to ensure alignment and rapid delivery

Technical Skills

• 5+ years of backend development experience with Node.js, REST APIs, and serverless architecture
• Proven expertise with Solana, including NFT creation and transaction workflows
• Strong understanding of Firebase Authentication and secure role-based access design
• Experience integrating Stripe and chat/messaging APIs (e.g., Twilio)
• Hands-on knowledge of Azure Functions and debugging production APIs is a plus
• Familiarity with Azure Cosmos DB, Firebase (Auth via Social + Wallets), Stripe, Revolution, Twilio Chat, and Azure Cloud
• Professional proficiency in English (written and spoken) is required

Other Requirements

• Excellent communication skills and ability to work cross-functionally
• Strong ownership mindset and a drive for delivering real impact
• Comfortable working in fast-paced, collaborative environments
• Immediate availability for project start
• Freelance contract with a target delivery window of 2 3 weeks
• Remote work collaborate with teams across the EU and GCC

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