Backend Engineer (Node.js, Blockchain)

Giraffe Software; Town of Poland (NY); On-site; USD 90,000 - 120,000; Full time

Job summary

A Ukrainian software development company is seeking a Backend Engineer to join the client’s core product team. The role involves developing and maintaining backend services for an NFT platform, with a focus on designing scalable systems using TypeScript and Node.js. Candidates should have over 3 years of backend engineering experience and a demonstrated ability to integrate with Solana blockchain data, along with strong database design skills. This position promises to be fast-paced and collaborative.

Qualifications

• 3+ years of backend engineering experience with TypeScript or Node.js.
• Experience with Solana blockchain integration.
• Strong skills in designing database schemas and writing queries.

Responsibilities

• Build and support backend components including APIs and authentication layers.
• Design and implement backend features for user interactions.
• Optimize performance by improving database operations.

Skills

Backend engineering experience

TypeScript

Node.js

Solana data handling

API development

Database design

Tools

Postgres

Serverless architecture

Job description

Giraffe Software isaUkrainian software development company that provides high-quality ITsolutions for web and mobile development, consulting and software testing.Weturn ideas into reliable technical solutions.

Weare the Ukrainian software development company Giraffe Software.

Weare looking for aBackend Engineer tojoin the client’s core product team inanoutstaffing format. The engineer will beresponsible for developing and maintaining backend services that power the NFT platform. The role requires experience indesigning scalable, maintainable systems and the ability towork with clearly defined scopes and well-structured deliverables within project sprints.

Key Responsibilities

• Build and support backend components, including APIs, authentication layers, and coordination logic for the client’s expanding gaming and collectible ecosystem.
• Design and implement backend features for trait equipping, pack creation, DOT/XP event handling, and leaderboard functionality.
• Create scalable endpoints and backend workflows that enable smooth and efficient integration with the frontend.
• Work with chain-indexed Solana data, handling queries for NFTs, trait metadata, and wallet interactions.
• Develop reward and referral mechanics, incorporating wallet-based authentication and user identity flows.
• Partner closely with blockchain engineers onPDA/state structures and with frontend teams todeliver end-to-end features.
• Improve backend performance byoptimizing database operations, session handling, and metadata throughput.
• Maintain arobust, secure, and modular backend architecture, ensuring clear and thorough technical documentation.
• Languages: TypeScript (Node.js). Rust smart contract development experience isaplus.
• Web3: Solana (Anchor, PDAs, SPLtokens, Metaplex)— experience with Solana programs via APIs/RPCs ispreferred.
• Deployment: Serverless and edge-first architecture. CI/CD experience inWeb3 contexts isbeneficial.

Requirements

• 3+years ofbackend engineering experience working with TypeScript orNode.js.
• Demonstrated ability toarchitect APIs and design route structures suited for scalable applications.
• Experience pulling and integrating on-chain data from Solana orother L1blockchains into backend systems.
• Strong skills indesigning database schemas, handling migrations, and writing queries (ideally with Postgres).
• Ability tooperate effectively inafast-paced setting and collaborate with different functional teams.
• Clear communication skills and the capability to manage your own workload, set priorities, and deliver independently.