Blockchain & Backend Developer

Suportr League Blockchain
3 days ago

Role details

Contract type
Permanent contract
Employment type
Part-time (≤ 32 hours)
Working hours
Regular working hours
Languages
English

Job location

Remote

Tech stack

API
Amazon Web Services (AWS)
Code Review
Databases
Disaster Recovery
Python
Key Management
PostgreSQL
MongoDB
Node.js
Redis
Blockchain
TypeScript
WebSocket
Data Logging
React
Caching
Firebase
Backend
Build Management
Hyperledger
Information Technology
Ethereum
Solidity
Non-relational Database
Web3.js
React Native
Front End Software Development
REST
Serverless Computing
Go
Microservices

Job description

  • Blockchain & Smart Contracts
  • Design and build the Suportr League bespoke blockchain (e.g., Substrate, Cosmos SDK).
  • Develop, test, and deploy smart contracts for fungible tokens (ERC-20 equivalent) and non-fungible tokens (ERC-721 / 1155 equivalent).
  • Build and secure user-facing wallets and key management infrastructure for token and NFT interactions.
  • Develop cross-chain bridges with major chains (e.g., Ethereum, BSC).
  • Architect and implement robust backend systems in Golang, including RESTful and WebSocket APIs to support game logic, player stats, token transactions, and rewards logic.
  • Manage server infrastructure, databases, and caching systems for optimal performance (PostgreSQL, Redis, MongoDB, etc.).
  • Integrate blockchain operations seamlessly with centralised services like matchmaking, leaderboards, and reward redemption.
  • Security & Performance
  • Ensure platform security across smart contracts, APIs, and backend services.
  • Implement logging, monitoring, and disaster recovery protocols.
  • Conduct regular code reviews, audits, and performance optimisations.
  • Work with frontend / game developers and product leads to deliver integrated features.
  • Contribute to strategic technical decision-making and long-term roadmap planning.
  • Stay current with evolving Web3, gaming, and backend technologies.

Requirements

  • Bachelor's degree in Computer Science or related field (or demonstrable experience).

  • Proficient in Solidity and / or Vyper for smart contracts.

  • Experience with one or more blockchain frameworks (Substrate, Cosmos SDK, Hyperledger).

  • Proficient in backend languages such as Node.js , TypeScript , Go , or Python .

  • Familiar with relational and non-relational databases (e.g. PostgreSQL, MongoDB).

  • Familiarity with Web3.js, Ethers.js, or similar blockchain libraries.

  • Comfortable deploying and managing services in AWS , GCP , or other cloud environments.

  • Strong grasp of encryption, wallet key management, and secure authentication methods.

  • Collaborative mindset with a bias for action in a lean startup environment.

  • Passion for gaming and the evolving play-to-earn economy. Nice to Have

  • Experience integrating blockchain with React , React Native , or Unity frontends.

  • Prior contributions to gaming or gamified platforms.

  • Familiarity with DeFi protocols or tokenomics.

  • Understanding of Firebase, real-time multiplayer servers, or serverless architectures.

Benefits & conditions

  • Competitive salary post-funding (with milestone-based increases)
  • Remote-first, flexible working environment
  • Influence over product roadmap and technical architecture
  • Access to a passionate, purpose-driven founding team and community
  • The chance to reshape the future of sports fandom through decentralised game innovation

About the company

Suportr League is a high-growth, early-stage startup redefining fan engagement through a play-to-earn gaming platform tailored for sports fans. Our platform merges high-performance gaming systems with blockchain-backed digital assets, tokenised rewards, and secure wallet infrastructure-offering users real-world value for their digital loyalty and skill. We are building out the Suportr League Blockchain and platform backend and are seeking a Blockchain & Backend Developer as a technical cofounder . Note : This is a cofounder role. While it does not come with an upfront salary, it includes a meaningful equity stake and a future salary package tied to successful fundraising.

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