Blockchain Developer

Location: Dubai / London / Remote | Engagement: Full-time or project-based | Experience: 3+ years preferred | Reports to: Technology Lead / Founder Build secure, practical blockchain capabilities for Kognitiv Academy, including verifiable learning credentials, digital achievements and integrations that improve learner trust and portability. This is an engineering role, not a token-speculation mandate. What you will own - Design, develop and maintain smart contracts, APIs and blockchain integrations where they provide genuine product value. - Develop verifiable credentials, on-chain or cryptographically verifiable certificates and badge issuance workflows. - Evaluate appropriate chains, standards and wallet experiences against cost, security, privacy and usability. - Integrate blockchain services with the learner platform, identity and existing backend systems. - Write tests, documentation, monitoring and deployment automation; manage secrets and key security correctly. - Coordinate independent reviews or audits before any production smart-contract deployment. - Work closely with product, engineering and regulatory advisers on data protection and user consent. Required experience and capabilities - 3+ years in software engineering with demonstrable production blockchain/Web3 experience. - Strong knowledge of Solidity/EVM or a comparably relevant blockchain stack, secure API design and backend engineering. - Understanding of cryptographic signing, wallet interaction, transaction lifecycle and security risks. - Practical Git, CI/CD, testing, observability and technical documentation skills. - Ability to explain architecture choices in plain business language. Nice to have - W3C Verifiable Credentials, Open Badges, decentralised identity and education credential systems. - Experience with Ethereum-compatible L2s, indexers and cloud infrastructure. - Prior work in education, gamification or SaaS. First 90 days - Audit current credential and gamification requirements and propose a minimal, secure technical architecture. - Deliver a sandbox proof of concept for a verifiable credential or achievement workflow. - Publish an implementation roadmap with costs, dependencies, security review and rollout gates. Success measures - Reliable and secure delivery against agreed milestones. - Verification completion rate, integration reliability, test coverage and documented security findings. - Low end-user friction and sustainable transaction/infrastructure cost. Application: Please share a CV/profile, a short note on relevant experience and examples of work or projects where appropriate. Originally posted on Himalayas