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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%
Certified in:
Blockchain Custom Software Development

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 noted for offering good value for cost, with clients highlighting their competitive pricing and professionalism. Engagements vary in team size, often involving 2-10 members, and clients appreciate the effective communication and timely delivery of 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

4.8
  • Quality 5.0
  • Schedule 4.8
  • Cost 4.9
  • Willing to Refer 5.0

Top Mentions

Review Highlights

  • Effective Project Management

    Protofire is praised for delivering projects on time and maintaining clear and responsive communication. Clients commend their professionalism in project management, which contributes to efficient collaboration and successful project outcomes.

  • Strong Blockchain Development Expertise

    Protofire consistently delivers high-quality blockchain development services, including smart contract development and integration of EVM and non-EVM networks. Clients appreciate their technical depth and ability to handle complex blockchain projects effectively.

  • Reliable and Professional Team

    Clients find Protofire easy to work with, reliable, and professional. Their team is known for its engineering-first approach and genuine care for customer success, which enhances client satisfaction and trust.

  • Alignment with Client Values

    Protofire is noted for being a great cultural fit with their clients, offering good value for cost, and aligning well with client company values. This alignment fosters long-term collaboration and trust.

  • Partnership and Integration Value

    Clients value Protofire not just as an outsourced developer but as a technical partner, integrating Protofire's products and infrastructure into their ecosystems, which enhances product development and ecosystem expansion.

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.

Custom Software Dev for Blockchain Dev Services Company

  • Blockchain Custom Software Development IT Managed Services
  • Managed Software Application & Solutions Web3
  • Confidential
  • Oct. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Protofire is good at what they do."

Oct 1, 2026
Global Partnerships, Soneium
Samyukta Narasimhan
Verified
  • Financial services
  • Singapore
  • 51-200 Employees
  • Online Review
  • Verified

Protofire has provided end-to-end blockchain development and maintenance services for a blockchain development services company. The team has helped the client with multi-signature wallets.

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.

Blockchain & Cloud Consulting for Blockchain Network

  • Blockchain Cloud Consulting & SI
  • Ethereum Development Web3
  • Confidential
  • Apr. 2022 - Ongoing
4.5
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

"Protofire is reliable."

Jul 30, 2026
Department Head, DIA
Anonymous
Verified
  • Information technology
  • Zug, Switzerland
  • 11-50 Employees
  • Online Review
  • Verified

Protofire provides blockchain and cloud consulting services for a blockchain network. The team has integrated Ethereum virtual machines (EVM) and non-EVM networks and components of the client's infrastructure.

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
Verified
  • Information technology
  • Hong Kong
  • 51-200 Employees
  • Online Review
  • Verified

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 1-6 of 6 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 6 verified client reviews averaging 4.8 stars.

Learn More
Verified Client Reviews
6
Overall Review Rating
4.8
Source
Clutch
Last Updated
October 1, 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 Sunnyvale, CA, United States 94085

16 - 20

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Protofire

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Timur Galimov

Startale Group

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Samyukta Narasimhan

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