| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Kiln | Paris, France | $133k - $135k | |||
Improbable | United Kingdom | $111k - $119k | |||
Flashbots | United States | $86k - $110k | |||
Ether.fi | Remote | $154k - $175k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
ENS Labs | Asia | $88k - $90k | |||
Cryptio | London, United Kingdom | $84k - $87k | |||
Chainalysis | New York, NY, United States | $108k - $205k | |||
Polymarket | New York, NY, United States | $125k - $159k | |||
Trmlabs | Remote | $96k - $148k | |||
Trmlabs | Remote | $91k - $115k | |||
Trmlabs | Remote | $84k - $90k | |||
Trmlabs | Remote | $91k - $115k | |||
Prove | Remote | $130k - $160k | |||
Trmlabs | Remote | $88k - $120k | |||
Trmlabs | Remote | $96k - $148k |
As a Senior Protocol Security Engineer at Kiln, you’ll own the security of our smart contract products from design through production.
You’ll work hands-on across smart contract audits, monitoring, incident response, and security tooling, collaborating closely with Smart Contract, Protocol, and Infrastructure teams to strengthen security and safety across the entire product lifecycle.
Reporting to the VP of Security, you’ll play a key role in defining, implementing, and operating Kiln’s smart contract security posture at scale.
Responsibilities:
Protect Kiln’s production protocols accros Kiln Onchain (dedicated staking and liquid staking protocols), Kiln DeFi (ERC-4626 vaults built on top of lending and RWA protocols), and Railnet (vault and validator infrastructure).
Design and execute smart contract security testing, including invariants, fuzzing, and exploratory formal verification.
Perform internal smart contract security audits and provide clear, actionable remediation guidance.
Own security sign-off for smart contract releases and act as a key decision-maker on security trade-offs.
Contribute to protocol-level threat modelling, including economic, governance, and composability risks.
Build and maintain smart contract security tooling: contract inventory, governance automation, monitoring, and alerting in production.
Continuously improve Kiln’s smart contract security framework: aligned with business growth, protocol complexity, and compliance requirements.
Act as the primary point of contact for smart contract security at Kiln, coordinating with external auditors and supporting security certifications.
Partner closely with Protocol, EVM, Infrastructure, and Product teams to embed security into design reviews, CI/CD, testing, and release workflows.
Stack:
Smart Contracts (EVM): Solidity, Vyper, Foundry, Certora
Software: Python, Golang
Infrastructure: AWS, Kubernetes, Web3Signer, Hashicorp Vault, Prometheus
Requirements
5+ years of engineering experience in Web3, with smart contracts running in production.
Strong hands-on experience with smart contract security, including audits, reviews, or protocol design.
Solid understanding of protocol-level threat models, including MEV and oracle manipulation, governance and economic attacks, and composability or systemic risk.
Experience working with external auditors, security reviews, or certification processes.
Familiarity with bug bounty programs and vulnerability disclosure workflows.
Excellent communication skills, with the ability to explain complex security topics to both technical and non-technical stakeholders.
Nice to have
CTF and Bug bounty track record.
Contributions to open-source security or smart contract tooling.
Fluent (written and spoken) in both French and English.
About Kiln:
Kiln is the leading enterprise-grade rewards platform that enables institutional customers to stake assets and integrate staking & DeFi functionality into their offerings. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.
With $15+ billion in crypto assets staked through our platform, Kiln has established a strong presence on Ethereum, managing over 5.4% of the network through 50,000+ validators — all with zero slashing events.
Kiln serves more than 140 leading customers, including Binance, BitPanda, Bitgo, Fireblocks, VanEck, and TrustWallet.
Our team is just over 100 ecosystem enthusiasts brings experience from industry leaders like Google, Circle, Ledger, Chainalysis, and other prominent technology and cryptocurrency companies.
We've raised $30M in total funding from prominent investors including 1kx, Crypto.com, Illuminate Financial, Consensys, Wintermute, Kraken Ventures...
Join Kiln and help us make the web more secure, stable, decentralized, and fair!
How Kiln will support you:
At Kiln, our values drive us: Technical Excellence ensures top security and usability; Innovation-Driven Meritocracy elevates groundbreaking ideas; Trust and Transparency build reliability through open communication; and People First keeps our team and clients at the heart of everything we do.
A fast-paced, bureaucracy-free work environment
Equity share options in the business: if Kiln succeeds, we all succeed!
Competitive salary
Flexible holiday
Flexible remote working
Choose your IT equipment
Internet connection: €50/month
Significant personal development budget (books, training)
-
Overseas tech conferences budget
Kiln is an Equal Opportunity Employer
We are committed to fostering an inclusive and diverse workplace where everyone is valued and respected. We welcome applications from all backgrounds, including women or persons with disabilities.
Your interview process
Our thorough process ensures the best fit for both you and Kiln, and we strive to make each step valuable and efficient.
Recruiter Interview (45 min)
Take-home test (< 3 hours)
Technical Interview (60 min)
Core Values Interview (45 min)
Founders Interview (30 min)
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Offer!
Your personal information will be securely stored in our Applicant Tracking System (ATS) and will not be shared with external parties. We comply fully with GDPR regulations to protect your data and privacy.
Please note that we do not sponsor visas for persons without work authorization in your location. This role is for full-time employees only (no B2B or contractors). Thank you!
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