AI/Blockchain Full-Stack Developer who can take Our Working Prototype to Production

Posted last week

Only freelancers located in the U.S. may apply.U.S. located freelancers only

Summary

We're building the next platform for SBL Nova, a company that already monitors tens of billions of dollars in securities collateral for banks, broker-dealers, and RIAs. The next version of that platform needs to handle collateral that lvives on-chain — tokenized real-world assets, stablecoin settlement, and AI agents that can act on risk in real time instead of just flagging it. We're not hiring someone to build this from a spec doc or a Figma file. We already built a working prototype ourselves — a real Next.js 16 / React 19 / TypeScript app with actual client-side state, a working wallet connect/disconnect flow, a live approve/deny queue for agent actions, working search and filtering, and a functioning notifications inbox. It runs with zero API keys or backend — clone it, npm install, npm run dev, and you can click through the whole thing in under a minute. What it doesn't have yet — and what we need you for — is everything below the surface: - Wiring up a real ERC-4337 smart wallet (ZeroDev, Alchemy Account Kit, or Safe) behind our existing wallet context, replacing our mocked address with a live, session-key-scoped account - Building a real policy engine for our "agentic ops" screen — the UI for approving/denying agent actions already exists, it just needs actual agents behind it reading live testnet events - Pulling real on-chain data into our collateral registry and activity feed via an indexer (The Graph) or an RPC provider (Alchemy/Infura) Standing up and auditing the actual smart contracts our security registry currently mocks (think Slither, Foundry, Echidna) - Replacing our AI risk-scoring mocks with a real model — even a solid heuristic or scikit-learn baseline on real testnet transactions would be a big step up - Adding real authentication, role-based access, and a persistence layer (API + database) so this isn't just in-memory React state anymore What we're looking for: - Someone comfortable across the full stack — Next.js/React/TypeScript on the frontend, and confident building real backend services and APIs - Solid hands-on experience with EVM chains (we're targeting Ethereum, Arbitrum, and Polygon zkEVM) and account abstraction / smart wallets - Experience writing or auditing Solidity contracts, or working closely with a security process (Slither/Foundry/Echidna/Certora are all fair game) - Some real AI/ML experience — not "I used ChatGPT," but building and shipping actual models or pipelines, even simple ones - Someone who can look at existing code, understand the shape of a half-built system, and just start extending it — not someone who needs a fully specced ticket for every step How we'll work together: We'll give you the full prototype repo up front so you can see exactly what's already built and exactly where the mocked pieces are. From there we'd want to move in scoped chunks — smart wallet integration first, then the policy engine, then real data feeds — rather than one giant undefined project. Ongoing engagement if it's a good fit, with clear milestones so both sides know where things stand. Looking forward to hearing from you!

  • Less than 30 hrs/week
    Hourly
  • 3-6 months
    Duration
  • Expert
    Experience Level
  • $70.00

    -

    $85.00

    Hourly
  • Remote Job
  • Complex project
    Project Type

Contract-to-hire opportunity

This lets talent know that this job could become full time.
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Skills and Expertise
Mandatory skills
AI Agent Development
AI Development
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:yesterday
  • Interviewing:
    5
  • Invites sent:
    5
  • Unanswered invites:
    2
About the client
Member since Jul 21, 2026
  • United States
    5:26 PM

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