Full-Time

Protocol Engineer

Posted on 7/25/2025

Caldera

Caldera

11-50 employees

Provides customizable Ethereum-compatible rollups platform

Compensation Overview

$190k - $250k/yr

New York, NY, USA

Remote

Category
Software Engineering (2)
,
Required Skills
Ethereum
Rust
Solana
Solidity
Requirements
  • Have 3+ years engineering experience, including shipping production protocols with significant total value locked.
  • Possess expert-level Solidity and/or Rust skills and a deep grasp of Ethereum Virtual Machine and Solana Virtual Machine internals.
  • Understand gas/compute metering on Ethereum, Layer 2s, and Solana, and how off-chain components (relayers, indexers) interact with contracts.
  • Are comfortable owning end-to-end security: access control, upgradeability, failure-mode analysis, and incident response.
  • Excel at systematic debugging, test-driven development, and writing clean, well-reviewed code.
  • Communicate clearly and enjoy partnering with frontend, backend, and product teams.
Responsibilities
  • Design and implement Solidity and Rust smart contracts across Ethereum Virtual Machine compatible networks, Layer 2 solutions, and Solana Virtual Machine that form the core Metalayer protocol.
  • Own on-chain security—role-based access control, pause/upgrade paths, and high-value asset protections.
  • Drive audits: spec, coordinate, and remediate findings with top security firms.
  • Collaborate with relayer, indexer, and frontend teams to define clear, developer-friendly on-chain APIs.
  • Build tooling for on-chain monitoring, alerting, and gas/performance profiling.
  • Research and prototype new protocol features (e.g., fast-finality bridges, zero-knowledge verified proofs) that expand Metalayer’s surface area.
Desired Qualifications
  • Prior experience building AMMs, bridges, or maximum extractable value/intents systems.
  • Hands-on work with consensus algorithms (Paxos/Raft, Tendermint, HotStuff, etc.).
  • Familiarity with zero-knowledge proofs, fast-finality research, or cross-chain messaging standards (e.g., CCIP, Inter-Blockchain Communication).
  • Significant open-source contributions to blockchain clients, protocol libraries, or security tools.

Caldera.xyz builds customizable blockchain rollups on top of Ethereum and Polygon to boost throughput and cut costs. They provide a no-code platform to build, launch, and manage rollups, and the rollups are EVM-compatible so existing Solidity contracts work. Revenue comes from transaction fees, bridge fees, and MEV, with options to pay gas in native tokens or eliminate gas fees. Differentiators include high configurability, a code-free interface, and native gas-economy customization, with the goal of enabling scalable, interoperable, easy-to-deploy blockchain apps.

Company Size

11-50

Company Stage

Series A

Total Funding

$24M

Headquarters

San Francisco, California

Founded

2022

Simplify Jobs

Simplify's Take

What believers are saying

  • Raised $15M Series A from Peter Thiel's Founders Fund in 2024.
  • Powers 60 rollups with $800M TVL and 1.7M wallets.
  • Partners with Mawari, Plume, Eco expand immersive RWA ecosystems.

What critics are saying

  • Optimism Superchain captures Base, fragments Metalayer liquidity now.
  • AltLayer's restaked rollups undercut pricing, steal DeFi clients Q1 2025.
  • Celestia DA adoption by Manta Pacific bypasses Caldera stack immediately.

What makes Caldera unique

  • Metalayer unifies 50+ rollups like Manta Pacific and ApeChain.
  • Rollup Engine enables API-driven, dynamic rollup customization.
  • Supports Arbitrum, Optimism, ZKsync, Polygon frameworks seamlessly.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Home Office Stipend

Conference Attendance Budget

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

22%
Crypto News
Dec 8th, 2025
Arbitrum Show 49% Transaction Boom and Major WETH/WBTC Inflows

Arbitrum show 49% transaction boom and major WETH/WBTC inflows. * Arbitrum saw a major activity surge, with transactions up 49%, DEX volume up 18%, and strong WETH/WBTC inflows. * Ecosystem accelerated, with big milestones from Robinhood, Hyperliquid, Ostium Labs, Caldera, Footium, and more. * ARB price showed a mild uptick, rising 2.5% in 24h as investors watch for a breakout above the $0.23 resistance level. Arbitrum just had one of the best weeks ever. Activity on the network has gone up a lot, and there have been a number of big wins for the ecosystem. In the last week, Arbitrum saw a 49% increase in transactions, an 18% increase in DEX volume, and a lot of WETH and WBTC coming in, which means that more money is moving onto the chain. The most recent data from Nansen shows that even though the number of active users went down during the week, Arbitrum's transaction count and on-chain liquidity kept going up. This suggests that the users who are still active are doing more and adding more value to the network. Strong chain performance. * Transactions: 21.9M in 7 days (+49%), the fastest growth among major Layer 2 networks. * Active Users: 1.07M (-39%), showing fewer but more engaged users. * Gas Fees: $314.7K for the week, ranking 7th across chains. * DEX Volume: $3.5B (+18%), showing strong trading activity. The bullish indicators like rising transactions, rising DEX volume, and significant inflows of WETH and WBTC, are often seen as a sign of capital preparing to deploy into DeFi. Stablecoin activity also expanded, with USDAI, sUSDAI, and other assets flowing into the ecosystem, another indicator that users are preparing to transact, trade, and stack. Other ecosystem wins. Beyond metrics, the past week was packed with major milestones from builders across Arbitrum: * Robinhood App crossed 1,000+ tokenized stocks, ETFs, and commodities on Arbitrum One, with over $10M in tokenized value. European users can already access these assets fully on-chain. * Arbitrum was featured in Etherealize's "Ethereum Layer 2 Landscape" report, where it led all L2s with $17.5B in TVL. * Ostium Labs raised $20 million to continue developing its "perpification of everything" platform. * Caldera launched its Onchain Expansion Program, giving ERA holders access to deep liquidity on Arbitrum One. * A massive Arbitrum Everywhere bounty was claimed after a user photographed Arbitrum branding above the Arctic Circle, a fun community moment. * Hinkal Protocol went live, adding confidential payments to Arbitrum. * Footium partnered with Manchester United legend Dimitar Berbatov, bringing mainstream sports visibility to the chain. * Rhea Finance joined Arbitrum, enabling multi-chain lending. * Warden Protocol launched AI-enabled swaps and more for Arbitrum users. * Anoma added support for Arbitrum, offering one-click intent-based UX and enhanced privacy. It was a week that not only showed strong metrics but also how fast developers continue to build on Arbitrum. ARB price action. Arbitrum's token, ARB, saw a mild price increase compared to the strong on-chain activity. ARB rose 2.5% in the past 24 hours, contributing to an 8% weekly climb. Since Hyperliquid has enabled direct native USDC deposits, it has reduced fees and improved user experience. This makes onboarding smoother and strengthens Arbitrum's position. Analysts said that ARB might not be undervalued. The token dropped 70% in the last quarter, but TVL is still going up. Stablecoin liquidity went over $4 billion, which shows that there is a lot of demand from users for transactions and yield opportunities. Short-term momentum is on the side of the bulls, but a long-term recovery needs to break through $0.234 (61.8% Fib). The RSI-14 at 39.41, which is neutral, and the MACD bullish crossover both support this idea. ARB is now close to support at $0.21, and a close above $0.23 could mean that the trend has changed. Arbitrum's 7-day performance shows that despite fewer active users, activity per user is rising fast, big players are building, liquidity is flowing in, and the ecosystem continues to strengthen. With major inflows, record transaction growth, and expanding developer momentum, Arbitrum is positioning itself as one of the strongest Layer 2s heading into the next cycle. Disclaimer: This article is intended solely for informational purposes and does not represent financial, investment, legal, tax, or other professional advice. The opinions and views expressed are those of the author(s) and do not necessarily represent the position of cryptonewsz.com. Cryptocurrency investments and trading entail high risks, including possible loss of some or all of your investment, and prices may be influenced by external events like financial, regulatory, or political events. Past performance cannot be used to determine future results. Readers are strongly advised to do their own research and consult with an expert financial advisor prior to making any investment. cryptonewsz.com takes no responsibility for loss or damages sustained as a direct result of material contained in, or information, published through, this website. Explore our Terms and Conditions and Privacy Policy for more information. Swati is a crypto writer and memer since her school days, deep into BTC, ETH, and everything web3. She's ex-Shiba Inu, ex-CoinEx, and lives for crypto news, memes, and market chaos.

CaptainAltcoin
Aug 15th, 2025
Mawari Partners with Caldera to Launch Mawari Network, Enabling Real-Time Streaming of Immersive, AI-Powered Experiences Globally

Caldera, the internet of interconnected, modular blockchains, announced a partnership with Mawari, which is launching its network to power global infrastructure for real-time streaming of immersive 3D content.

DeepNewz
May 4th, 2025
Caldera Leads with $25M Funding, Partnerships

Caldera tops the Kaito AI leaderboard, surpassing other projects, after raising $25 million in funding. The project, known for Ethereum Layer 2 rollups, plans an ERA token airdrop and has partnered with ApeCoin. Supported by InfoFi, Kaito AI tracks project mindshare and rewards creators. KaiaChain also shows growth, with active addresses up 47.5% to 24.5 million in April 2025. The Kaito leaderboard reflects dynamic shifts in Web3 project rankings.

Medium
Dec 14th, 2024
Caldera Raises $15M for Metalayer Rollups

Caldera announced a $15M Series A funding to develop the Metalayer, a unified rollup ecosystem for Ethereum. Launched in 2022, Caldera enables projects to deploy rollups effortlessly, supporting platforms like Optimism, Arbitrum, ZKsync, and Polygon. With over 60 rollups, 1.7 million unique wallets, and $800 million in TVL, Caldera aims to address Ethereum's fragmented rollup landscape by bridging isolated liquidity and communities.

BlockTelegraph
Nov 14th, 2024
Caldera Acquires Hook, Raises $15M

Caldera has acquired Hook to enhance its rollup platform and accelerate product development for Ethereum's largest rollup ecosystem. The acquisition brings Hook's team and insights as a former customer into Caldera, boosting its infrastructure solutions for Web3 developers. This move follows Caldera's $15 million Series A funding led by Peter Thiel's Founder Fund, reflecting its growth and commitment to developer-focused rollup infrastructure. Caldera's team now includes 20 members globally.

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