Summary: Join our established blockchain software house, specializing in enterprise-grade private and public chain solutions. We are seeking a Senior Java Developer to enhance our backend services and contribute to the development of innovative blockchain applications.

Responsibilities:

• Develop and maintain backend services using Java to support blockchain applications.
• Collaborate with frontend developers to integrate APIs with React/Vue interfaces.
• Design, implement, and optimize scalable blockchain solutions for enterprise clients.
• Troubleshoot and resolve complex technical issues related to backend services.
• Stay updated with the latest trends and best practices in blockchain technology.

Required Skills:

• Proven experience in Java development, particularly in a senior role.
• Strong expertise in API integration and development.
• Experience with frontend technologies such as React or Vue.js is beneficial.
• Familiarity with blockchain concepts and technologies is preferred.
• Excellent problem-solving skills and attention to detail.
• Strong communication skills and ability to work collaboratively in a team environment.

The Role

Ziina is looking for a Full-Stack Engineer to join our team. We have laid a strong foundation upon which we’ve shipped our product. We are looking for someone to help us build engaging new features, who is obsessive about delivering high quality products and can shape our engineering organization to be the kind of place that bright young minds from across the region aspire to work for.

As our team is small, our ideal candidate is a creative thinker excited to solve hard problems to build something from the ground up. They can move quickly, clearly articulate tradeoffs, and have the judgement to own features independently. They are obsessive about delivering great, high quality products to our users. We are ambitious and excited to build big things, and we’d love to bring on someone who is as well.

As a Full-Stack engineer at Ziina you will:

• Collaborate with world-class product, design, operations, and engineering teams to determine which features and solutions will deliver the most value for the business and the best experience for our users.
• Own, develop, and deliver end-to-end feature implementations spanning both the frontend and backend. You will take features from design, to implementation, to polish, to shipping, to monitoring and measuring progress.
• Actively participate in design discussions and collaborate with the product team to ensure web and mobile interfaces are user-friendly and intuitive, while integrating effectively with backend services and APIs.
• Review code and continuously level up by collaborating with other engineers on the team.
• Help shape our engineering culture by introducing best practices, tools, and methods of knowledge-sharing for building best-in-class products.

To succeed in this role, you likely: 

• Have 4+ years of full-stack development experience.
• Demonstrate high integrity and a team-first mindset
• Take ownership and show initiative, with a strong bias toward action
• Thrive in bringing clarity and structure to ambiguous problems
• Are curious, proactive, and eager to learn and grow
• Communicate clearly and collaborate effectively across teams
• Can define and articulate technical and design requirements
• Write clean, high-quality, testable, and well-documented code
• Think analytically, with strong data-driven decision-making and customer focus
• Are based in, or open to relocating to, the UAE

What would amaze us

• Proficiency with frontend technologies such as React, Next.js, Angular, or Vue, and backend technologies like Node.js, Django, or Ruby on Rails.
• Experience with relational databases like PostgreSQL or MySQL.
• Strong understanding of RESTful APIs and experience with web servers, application architecture, and deployment strategies.
• A solid grasp of version control tools, preferably Git.
• Experience in integrating third-party services and APIs into a complex application ecosystem.

Our tech stack

We’ve built a modular architecture with the principles of reliability, scalability, and maintainability in mind. Our current stack is:

• Typescript, Node.js and Nest.js for our main application’s backend.
• Swift/SwiftUI for our iOS app, Kotlin for our Android app.
• Next.js, React and Typescript for our web applications.
• GraphQL Federation for our client-facing APIs and Kafka for our inter-service communication.
• PostgresSQL for consistent and durable storage, Redis for quick fetching, Elasticsearch for quick searching.
• AWS for hosting our cloud infrastructure and Kubernetes for orchestrating our workloads.
• Terraform for IaC
• Github Actions for CI/CD.