Role Description We are building a stealth-stage consumer platform that combines AI-powered data extraction, a token-based incentive layer, and on-chain data verification. The product is built around a mobile-optimised web application through which users contribute structured, verified real-world data and are rewarded with tokens. We have completed the proof-of-concept phase: a working barcode scanner, multi-image capture flow, AI extraction pipeline, and product database are all in production. The MVP phase adds the blockchain and token reward layer on top of this foundation. The engineer joining this role will not be rebuilding anything that already exists — the scope is additive. Full details of the product, market, and roadmap are shared under NDA during the interview process. Qualifications - Experienced blockchain engineer - Hands-on, individual contributor role - Direct accountability to the founding team - Engagement runs for at least five months - Possibility of a continued relationship depending on the outcome of the MVP phase Requirements - Smart contracts: design, write, and deploy an ERC-20 token contract on Base with minting restricted to the backend signing wallet. - Batch jobs: implement a Batch Anchor Job (collect unanchored scans, compute hash, submit on-chain) and a Batch Token Distribution Job (multi-send accrued balances to all eligible wallets). - Backend integration: extend the current schema with models for blockchain status, anchor batches, user wallets, and token rewards via a migration that does not disrupt the live extraction pipeline. Build blockchain status and balance API endpoints. - Frontend wallet layer: integrate wagmi v2 + viem into the existing Next.js frontend. Implement wallet connect/disconnect, token balance display (accrued vs. distributed), and error handling for network mismatch, missing extension, and rejected connections. Scanning must remain functional without a connected wallet. - Security: backend signing key in secrets manager, rate limiting on scan endpoints, no raw message signing from user wallets, and a documented key rotation runbook before mainnet. - QA and load testing: extend the regression suite to cover batch flows and blockchain status transitions; run load tests at 500 and 1,000-product anchor batches. Benefits - Opportunity to work closely with the founding team - Direct access to the project management team for architectural decisions - Engagement in a cutting-edge technology project Company Description We are currently operating in stealth. Candidates advancing to interviews will be asked to sign a mutual NDA before full project details are disclosed. To apply, please send your CV and a short cover letter to info@appspoon(dot)io, or connect with Chuanshan Huang on LinkedIn if you'd like to chat informally first.

• Own the design and delivery of blockchain network infrastructure that abstracts blockchain complexity into reliable, platform APIs • Lead multi-quarter initiatives including new chain integrations, re-architecture efforts, and data migrations that improve system latency, reliability, and cost • Define and maintain APIs, SLOs, and observability for the systems you build, including on-call ownership • Partner with product and platform teams to establish data contracts and ship SDKs and platform primitives that drive adoption across Coinbase • Build deep technical context across multiple top blockchain protocols (e.g., Bitcoin, Ethereum) and apply that knowledge to simplify cross-chain operations

• Define and drive the multi-quarter technical strategy for Blockchain Platform, spanning nodes, wallets, indexing, and asset lifecycle, to support new chains, new products, and significant growth in onchain transaction volume. • Architect and evolve the core Blockchain Platform infrastructure - nodes, indexers, wallet systems, and liquidity primitives - for high availability, low latency, cost efficiency, and security at global scale. • Lead end-to-end design and rollout of large, cross-team architectural initiatives (e.g., wallet stack rearchitecture, indexing stack redesign, asset identifier system), breaking high ambiguity into clear milestones and measurable outcomes. • Set and enforce technical standards for correctness, security, and reliability across all crypto asset operations, including transaction finality, key management, reconciliation, and failure-mode handling for all onchain flows. • Drive engineering efficiency across the org - defining standards for testing, quality, automation, and observability, and championing AI-native approaches that reduce operational burden and enable agents to serve as front-line operators. • Use data and observability signals (e.g., transaction success rates, node reliability, indexing latency, on-call burden) to identify structural platform gaps and lead systematic reliability and efficiency improvements. • Represent Blockchain Platform in executive and cross-org forums, clearly communicating tradeoffs, aligning stakeholders on strategy, and securing buy-in for high-impact technical bets including emerging areas like Yield and Stablecoins.

Role Description The Senior Systems Engineer is responsible for developing, supporting, and maintaining ScriptPro’s internal and customer-facing production environments. This role focuses on diagnosing and resolving complex technical issues while ensuring the stability, performance, and availability of systems across both on-premises and cloud platforms. - Troubleshoot and resolve technical issues impacting customer production environments across cloud and on-premises systems - Analyze system performance and stability, implementing corrective actions to improve reliability - Support and maintain infrastructure including applications, servers, and configurations - Perform remote system configuration, upgrades, and patching - Diagnose issues across physical and virtual environments, including hybrid cloud architectures - Collaborate with internal teams (Applications, Infrastructure, Development) to resolve cross-functional issues - Document, track, and manage service requests and activities in Siebel with a high level of accuracy - Contribute to root cause analysis and continuous improvement efforts - Strong problem-solving and analytical thinking - Ability to manage multiple priorities in a fast-paced environment - Clear and effective communication with technical and non-technical stakeholders - Customer-focused mindset with a commitment to service quality and attention to detail - Ability to work independently while collaborating across teams - Perform other duties as assigned Qualifications - Associate or bachelor’s degree in engineering, Information Technology, or related field preferred - 2–5 years of experience in technical support, systems administration, cloud operations, or a similar IT role - Strong troubleshooting and analytical skills across systems, applications, and networking - Relevant certifications (CompTIA, Microsoft, or equivalent) - Experience with Azure DevOps and cloud-based development environments - Proficiency with Power Platform technologies - Experience with Artificial Intelligence tools including creating and utilizing custom Copilot Studio agents - Knowledge of healthcare, pharmaceutical, or regulated industries - Advanced knowledge of Windows operating systems and client-server environments - Experience with Microsoft Azure, including virtual machines, networking, storage, monitoring, Entra, Purview, and Defender - Experience with SQL Server troubleshooting and basic database administration - Working knowledge of Active Directory, Group Policy, Exchange, and Systems Center Configuration Manager - Familiarity with networking fundamentals including DNS, DHCP, VPN, and general connectivity concepts - Experience supporting hybrid environments (on-premises and cloud) - Familiarity with ticketing/service desk systems and SLA-driven support models - Understanding of PHI, PII, and security/compliance frameworks such as HITRUST Preferred Qualifications - Knowledge of the healthcare industry and/or medical insurance billing - Knowledge of the pharmaceutical industry with emphasis in outpatient pharmacy practice - Fundamental IT Certification (A+, MCITP Windows OS, Network +, etc.) Remote Work Requirements - Must have high-speed reliable internet access with a hard-wired connection - Must have a distraction-free home office workspace - Must be willing to participate in video virtual meetings (camera on) Benefits - Medical, Dental, Vision, Short-Term Disability, Company Paid Life Insurance & Long-Term Disability - 24/7 on-campus Gym - Vitality Wellness Program that helps lower your premium costs - Paid Time Off (PTO) - Parental Leave - Nine (9) paid holidays - Paid volunteer hours - Employee Assistance Program - Company-sponsored events and team-building activities - 401(k) Retirement Plan with company match - Financial investment services - Employee discounts on products and services