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Blockchain development for Web3, DeFi & RWA

Protofire is one of the earliest blockchain engineering firms, building and operating production Web3 systems since 2016. We maintain Solhint, an open-source Solidity linter and security tool used by over a million developers, and we build within the Chainlink, Safe, The Graph, and Blockscout ecosystems.

We are a full-stack blockchain engineering partner. Our teams design, ship, and operate:

  • Min project size
    $1,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    50 - 249
  • Locations
    Sunnyvale, CA
  • Year founded
    Founded 2016
  • Languages

8 Languages that we service

  • English
  • Spanish
  • Portuguese
  • Russian
  • Polish
  • French
  • Italian
  • Ukrainian

1 Locations

  • Sunnyvale , CA

Select Focus Area
Industries
Financial services
55%
Information technology
35%
Business services
10%
Clients
Midmarket ($10M - $1B)
45%
Small Business (<$10M)
30%
Enterprise (>$1B)
25%

Pricing Snapshot

Min. project size $1,000+
Avg. hourly rate $25 - $49 /hr
Rating for cost 4.9 /5

What Clients Have Said

Protofire is praised for providing good value for cost, with clients highlighting strong technical expertise and effective project management. Specific costs were not disclosed, but clients appreciated their budget fit and ongoing partnerships, indicating a favorable pricing structure for development and integration services.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 1 review
< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

Select a service to see pricing information

Protofire Review Insights

Overall Review Rating

4.9
  • Quality 5.0
  • Schedule 4.9
  • Cost 4.9
  • Willing to Refer 5.0

Top Mentions

Review Highlights

  • Effective Project Management

    Clients have commended Protofire for their clear and responsive communication, as well as their ability to manage projects efficiently. They deliver on time and effectively translate product goals into practical development tasks.

  • No Areas for Improvement Noted

    Clients did not mention any areas for improvement, indicating high satisfaction with Protofire's services and deliverables.

  • Innovative Product Integration

    Protofire has successfully integrated innovative products like the Dowsers Static Analyzer API into existing platforms, enhancing functionality and security checks for developers.

  • Cultural and Value Alignment

    Protofire has been chosen by multiple clients due to their cultural fit and alignment of company values. This alignment has contributed to effective collaboration and a strong working relationship.

  • Minimal Oversight Required

    Protofire's team is noted for requiring minimal oversight, thanks to their technical proficiency and understanding of client needs. This allows clients to focus on other priorities.

Protofire Reviews

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Managed DevOps Services for Decentralized AI Firm

  • DevOps Managed Services
  • DevOps Consulting Web3
  • Confidential
  • June 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Protofire's team is engineers first, which shows in the way they communicate and problem-solve."

Aug 10, 2026
Head of Ecosystem, Autonomys
Jim Counter
Verified
  • Other industries
  • San Francisco, California
  • 11-50 Employees
  • Online Review
  • Verified

Protofire provides managed DevOps infrastructure and integration expertise for a decentralized AI firm. The team handles the client's Blockscout EVM explorers, Safe deployment, and Hyperlane bridge.

API Integration Services for AI Verification Company

  • Blockchain Blockchain Marketing Custom Software Development
  • Confidential
  • July 2026 - Ongoing
4.5
Quality
5.0
Schedule
4.5
Cost
4.5
Willing to Refer
5.0

"Their project management has been very professional."

Aug 4, 2026
CEO & Co-Founder, Dowsers
Patrick Azzopardi
Verified
  • Financial services
  • Paris, France
  • 11-50 Employees
  • Online Review
  • Verified

Protofire has integrated a static analyzer API into Solhint for an AI verification company. This task has enabled developers to automatically verify the security of their smart contracts.

Custom Software Development for IT Company

  • Blockchain Custom Software Development DevOps Managed Services
  • Smart Contract Development Web3
  • $10,000 to $49,999
  • Oct. 2025 - Feb. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We were impressed with Protofire's communication."

Jul 27, 2026
Chief Marketing Officer, Pharos Network
Michelle Kang
  • Information technology
  • Hong Kong
  • 51-200 Employees
  • Online Review

Protofire handled smart contract engineering and web3 infrastructure support for an information technology company. They deployed Safe multisig infrastructure on the client's testnet and provided documentation.

Showing 1-4 of 4 Reviews

Our Story

We started Protofire in 2016 because serious blockchain teams needed engineers who would build real systems and stay to run them. We have kept that up through every market cycle since. We maintain Solhint, the open-source Solidity linter used by over a million developers, and we build and operate infrastructure across the Chainlink, Safe, and The Graph ecosystems. When chains, protocols, and finance teams need on-chain products that last, they come to us

What Sets Us Apart

Safe Guardians

Protofire has been a partner of the Safe team since 2017, contributed directly to its core codebase, and hold official Safe Guardian and Safe Wallet Partner status, which gives us quick PR-review access and close technical collaboration with the Safe core team.

Solhint

Our credentials include maintaining Solhint, the open-source Solidity linter used by 1M+ developers, and running a top-3 indexer in The Graph ecosystem.

Smart Contract Development

Protofire is a smart contract development company that has deployed 250+ projects since 2016, across Ethereum and 120+ EVM networks, Solana, and Cardano. We've built and maintained production contracts alongside Chainlink, MakerDAO, The Graph, Safe, Aave, and the Ethereum Foundation.

Verified means Clutch independently confirmed Protofire is a legally registered business,
has had its financial risk status checked (Creditsafe: High Risk), and is backed by 3 verified client reviews averaging 4.9 stars.

Learn More
Verified Client Reviews
3
Overall Review Rating
4.9
Source
Clutch
Last Updated
August 19, 2026

Business Entity

Business Entity Name Altoros, LLC
Source Department of State, Government of Puerto Rico
Jurisdiction of Formation Puerto Rico
Date of Formation September 25, 2018
Status Active
Last Updated August 2, 2026
ID 416164

Credit Report Results

International Credit Risk Assessment High Risk
Source Creditsafe
Last Updated August 7, 2026

*Clutch performed additional verification on this company and confirmed that there are no negative legal filings or large outstanding debts. This company has also received 3 or more verified reviews on our platform.

Learn More About The Clutch Verification Process

Locations (1)

830 Stewart Dr., Suite 119 SunnyvaleCA, United States 94085

16 - 20

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