Resumes show claims. We show proof. Web3.js Developers assessed on smart contract gas optimization, MEV extraction mitigation, and zk-SNARK privacy architecture — so you interview candidates, not question marks.
No credit card required.
Talent Marketplaces give you a resume. We give you the source code.
Candidate A
Software Engineer
Self Reported
2024
Experience
5 years React / Frontend Development
No portfolio links
Previous Roles
X-Corp
Tech Solutions Inc.
Education
B.S. Computer Science — State University
• UNVERIFIED CLAIM
Verified ProofedVerified Engineer
ConnectDevs Intelligence Dossier
SAM TECH SCORE
98/100
CODE QUALITY
A+
TECHNICAL INTERVIEW HIGHLIGHTS
Play Recorded Proof
const solveHardProblem = (data) => {
return data.reduce((acc, val) => {
// Verified optimal O(n) solution
return { ...acc, [val.id]: val.performance };
}, {});
};DECISION-READY DATA
You set the criteria. Scout ranked the matches. Now choose who's worth your time.
7 Years
89%
Match Score
FinTech Global
Georgia Institute of Technology
B.S. Computer Science
2012 - 2016
Alex Mercer
Senior Mobile Engineer
2021 – Present
7 Years
89%
Match Score
FinTech Global
Georgia Institute of Technology
B.S. Computer Science
2012 - 2016
Sarah Chen
Senior Mobile Engineer
2021 – Present
7 Years
89%
Match Score
FinTech Global
Georgia Institute of Technology
B.S. Computer Science
2012 - 2016
David Rodriguez
Senior Mobile Engineer
2021 – Present
We analyze thousands of placements to give you real-time salary data for every experience level.
Role: Junior Web3.js Developer
0-2 Years
Entry-level profile with a strong foundation in integrating web frontends with blockchain wallets, reading contract states, and dApp basics.
REQUIREMENTS
Degree in Computer Science or equivalent practical training.
Integrate standard web frontends with blockchain wallets using Web3.js libraries.
Read smart contract states securely and display blockchain data in user interfaces.
Junior Developer Hourly Rate
Average Yearly Salary ~$75k /yr
Market
Signal
Ecosystem Growth
Rising frontend integration needs as decentralized applications expand beyond core crypto communities.
Role: Mid Web3.js Developer
3-5 Years
Mid-level profile with proven expertise in smart contract optimization, gas fee reduction, and secure multi-signature logic.
REQUIREMENTS
Degree in Computer Science or equivalent practical training.
Optimize smart contract execution to reduce gas fees and improve transaction efficiency.
Implement secure multi-signature transaction logic for decentralized governance protocols.
Mid Developer Hourly Rate
Average Yearly Salary ~$148k /yr
Market
Signal
Protocol Development
High demand for security-conscious developers as DeFi protocols require rigorous contract auditing.
Role: Senior Web3.js Developer
6+ Years
Senior profile with deep mastery of MEV extraction mitigation, zero-knowledge proof scalability, and Layer-2 architecture.
REQUIREMENTS
Degree in Computer Science or equivalent practical training.
Mitigate complex MEV extraction attacks through advanced transaction ordering strategies.
Architect zero-knowledge proof scalability solutions for privacy-preserving decentralized applications.
Senior Developer Hourly Rate
Average Yearly Salary ~$153k /yr
Market
Signal
Decentralized Architecture
Extreme scarcity for elite roles requiring cryptographic expertise and advanced protocol security knowledge.
Traditional agencies take weeks. Our Intelligence Engine runs in parallel to deliver decision-ready profiles in real-time.
Hour 0
Signal Ingestion
You define the stack. Scout maps intent signals across 550M+ profiles.
Hours 2–24
Parallel Processing
Scout scans candidate profiles while Pilot launches multi-channel outreach. The system works asynchronously while you sleep.
Scout
Mass Ingestion
Parsing your role. Scanning 800M+ engineers. Surfacing matches—live results.
Pilot
Engagement
Sending interview invites. Tracking responses. Moving candidates to SAM—pipeline
SAM
Validation
Conducting interviews. Evaluating skills. Compiling decision-ready report now
const score = validate(dev);
if (score > 0.92) dispatch(shortlist);
Hour 48
You Receive Your Shortlist
3 Decision-Ready Profiles delivered to your dashboard.
STATUS: READY
Intelligent Shortlist
Candidates Found
1,204
Validated Skills
Web3.js, Node, Go
Top Matches
03
Marketplaces show you profiles. We show you capability.
The Problem
When you browse a talent marketplace, you are guessing. You see a resume that claims '5 Years Web3.js,' but you don't know:
Do they understand state mutability enough to prevent flash loan vulnerabilities and reentrancy attacks?
Can they architect Layer 2 scaling, or just mint generic ERC-721 tokens using boilerplate code?
Can they securely bridge off-chain computation with deterministic on-chain logic without introducing attack vectors?
The Solution
ConnectDevs removes the guesswork. We don't just send profiles; we send Structured Intelligence. Every candidate is interviewed by SAM against the specific Web3.js challenges you care about. You don't guess if they are good. You know.
Unverified Claim
Web3.js Developer
5 Years Experience
Verified Proof
CODE CHALLENGE
Solve a problem using algorithms
SAM INTERVIEW
Discuss alternative approaches and their trade-offs
TECH SCORE
98/100 Algorithm Score
GITHUB AUDIT
Active Open Source Contributor
For Web3.js Developers, we specifically test for smart contract gas optimization, MEV extraction mitigation, and zk-SNARK privacy architecture. You get the raw data before you even interview.
Agencies charge a markup every hour. We charge a flat platform fee. You keep the savings.
Number of developers
3 Devs
1
10
Role seniority
Base Salary: $120,000
Includes 35%
Zero Markup
Estimated Yearly Savings
If SAM doesn't surface interview-ready candidates your LinkedIn search missed—you pay nothing.
FLEXIBLE
0%
Zero Markup
We don't inflate developer rates or take recruitment fees.
Cancel Anytime
No lock-ins. No notice required. Keep your data.
Average time-to-shortlist
Global Talent Network
Most teams hiring Web3 engineers also need smart contract languages, development frameworks, and cryptographic primitives.
Everything you need to know about sourcing, assessing, and hiring top Web3.js Developers through our platform.
Deploying immutable, flawed code results in catastrophic financial loss. SAM conducts structured evaluations to test for critical vulnerabilities like reentrancy and integer underflows. You receive decision-ready insights verifying their ability to audit and secure smart contracts before deployment.
Web3 compensation is highly premium, with mid-level engineers averaging $148,000. Sourcing through our transparent $69/mo flat subscription ensures zero markup, allowing you to bypass the massive 20% platform fees charged by niche crypto talent marketplaces.
Finding engineers proficient in zk-SNARKs manually is incredibly difficult. The Scout agent searches 800M+ public profiles to locate specific repository contributions in Rust and Solidity. This intelligence engine delivers a highly curated shortlist ready in days, not weeks.
Freelancers offer flexibility for short-term audits, but core protocol development requires full-time dedication for security consistency. We source technically assessed talent for either strategy, ensuring you have data-backed capability regardless of the operational employment model you choose.
Interacting strictly with the Ethereum mainnet is often cost-prohibitive. We verify that candidates understand how to implement scalable off-chain computation and Rollup technologies. Our assessment-backed profiles prove they can build efficient, cost-effective decentralized applications.
Our platform provides the intelligence and structure, presenting you with the raw technical defense recordings and logic evaluations. Technical leads can audit the data first to ensure the candidate meets their rigorous cryptographic standards before proceeding.