Full-Stack Developer - Hybrid Decentralized Systems

We are seeking a highly skilled, adaptable Senior Full-Stack Developer to join Sbarter, a pioneering skill-based gaming platform that bridges high-performance Web2 competitive matchmaking with secure, decentralized on-chain settlement.
In this full-time remote contractor role, you will be responsible for building and scaling our Web2 backend services in Golang and our frontend user interfaces in React. Because Sbarter operates a hybrid architecture, you do not need to write smart contracts daily, but you must possess a solid, intuitive understanding of decentralized systems, ledger mechanics, and Web3 integration patterns.
We encourage the use of AI-assisted development tools, however, AI is a multiplier, not a replacement for engineering fundamentals. You must possess the deep system-level experience required to critically evaluate, architect, debug, and optimize the code you deliver.
What You Will Do
Design, build, and maintain high-throughput, low-latency microservices in Golang.
Develop responsive, highly responsive user experiences in React, utilizing modern micro-frontend design patterns and state management.
Bridge our Web2 application layer with our Web3 protocols, ensuring seamless communication with non-custodial wallets and blockchain nodes.
Apply robust web service architectures, ensuring optimal API performance, security, and message-queue reliability.
Collaborate with product and technical leadership to rapidly iterate on new tournament mechanics, leaderboard systems, and payment integrations.
What We Are Looking For
Proven, production-grade experience with Golang (Go) for backend microservices and React for modern web frontends.
Strong knowledge of web service design patterns, API gateway structures, caching strategies, and frontend microservices.
A clear, demonstrable understanding of Web3 environments, cryptographic signing, non-custodial wallet flows, and RPC node communication. W
The ability to write clean, self-documenting code, design robust database schemas, and lead complex features from technical specification through to production deployment.
Job Setup & Requirements
Full-time Remote Contractor
Immediate start preferred, with core overlap hours with European/CET time zones for collaborative sprints.
Fully Remote (Global)
If you are a builder who loves solving complex state synchronization problems, bridging Web2 ease-of-use with Web3 sovereignty, and utilizing cutting-edge workflows to ship fast, we want to hear from you.
Please submit your CV along with your GitHub profile or portfolio demonstrating real-world applications you have built.

Work arrangement
No