
Closed
Posted
Senior Frontend Developer Needed — [login to view URL] / TypeScript for large existing project We need a Senior Frontend Developer to join our team working on Valkra, an AI-powered smart contract security and auditing platform. Valkra is an existing project that combines AI/LLM analysis, automated security tools, vulnerability detection and real-time audit processing across multiple blockchain ecosystems. The frontend is built with [login to view URL], TypeScript, React and Tailwind CSS and is already substantially developed. We’re now looking for a senior developer to help complete, improve and prepare the frontend for production. What you'll do · Develop and improve the existing [login to view URL] frontend · Build and refine audit dashboards, findings, reports and project management interfaces · Integrate frontend features with Rust backend APIs and WebSockets · Fix bugs and improve performance, usability and reliability · Work closely with backend and other developers to deliver features Requirements · Strong professional experience with [login to view URL] / React / TypeScript · Experience with REST APIs and WebSockets · Experience working with existing production codebases · Strong debugging and problem-solving skills · Good Git and collaborative development experience Experience with AI platforms, Web3/blockchain, security applications or complex dashboards is a plus. TeamWork You’ll be working as part of a small team of 3–4 senior developers with separate backend/security responsibilities. Strong communication and teamwork are important, as frontend development will need to closely integrate with the backend and analysis systems. This is intended to be a long-term collaboration, not a one-off task. When applying, please include your relevant experience, portfolio/GitHub, availability and hourly rate and briefly describe a relevant frontend project you have worked on.
Project ID: 40662080
207 proposals
Remote project
Active 3 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
207 freelancers are bidding on average $32 USD/hour for this job

Hi, I'm Ricardo from Buenos Aires. What most audit dashboards struggle with isn't the blockchain logic, it's presenting complex security findings clearly enough that reviewers trust them without re-checking everything by hand. I'd start by getting familiar with the existing dashboards and WebSocket data flow, then tackle bug fixes and performance issues, then move into building out new findings and report views alongside your backend team. I'm not the right fit if you need someone driving blockchain security decisions - my strength is the frontend and API integration layer working closely with your team. Is the WebSocket layer already stable, or still evolving? I can review your current dashboard flow and flag one UX or performance issue for free. If you want, I can share similar dashboard and API-integration projects here on Freelancer.com. Tip: ask any frontend candidate how they handle a WebSocket reconnect drop, not just the initial connection.
$25 USD in 40 days
3.8
3.8

San Francisco, United States
Member since Aug 20, 2026
$25-50 USD / hour
$30-250 USD
$25-50 USD / hour
₹1500-12500 INR
₹1500-12500 INR
₹12500-37500 INR
$30-250 USD
₹15000-20000 INR
$250-750 USD
$750-1500 CAD
$100-250 USD
₹1500-12500 INR
$8-15 USD / hour
₹12500-37500 INR
$8-15 USD / hour
₹750-1250 INR / hour
$20-30 SGD / hour
$250-750 USD
$250-750 USD
$15-25 USD / hour
$2-8 USD / hour