Web3 Solidity Jobs in London, United Kingdom
















| Job Title | Company Name | Salary | Location | Tags | Posted | |
|---|---|---|---|---|---|---|
| Kiln | RemoteWeb3DeveloperEngineering | 1d | ||||
Past and filled jobs: | ||||||
| LinkPool | 9-5/hour | RemoteWeb3DeveloperDeFi | ||||
| Chainlink Labs | RemoteWeb3Non TechResearch | |||||
| Nethermind | 📍 London | Web3DevopsOperationsSecurity | ||||
| Chainlink Labs | RemoteWeb3ResearchOperations | |||||
| Chainlink Labs | RemoteWeb3Non TechMarketing | |||||

Nov 24, 2025
Full time - Paris or London hybrid or Remote from Western EU
Kiln is now part of the prestigious French Government program #FT120 from La French Tech! 🎉 🇫🇷
As a Fullstack Engineer at Kiln, you will join our Software Development Team, composed of 14 engineers split into 4 squads, to build the future of our SaaS/API-first products [https://docs.kiln.fi/v1/]. You will report to our Lead Software Engineer, and collaborate with the Product, Infrastructure and Smart-Contract teams to work on the various products that Kiln offers.
Responsibilities:
Contribute to architectural decisions and technical strategy.
Be an active contributor within the Fullstack squad owning Kiln user-facing products (Dashboard, Widget).
Design, develop and implement new features :
70% frontend (e.g. using our design system to build new features or adding new components to it…).
30% backend (e.g. implement the transaction crafting part for a new protocol…).
Participate in code review, test and CI/CD processes, bug fixing, and code maintenance.
Interact with customers for debugging purposes and product discovery.
Make sure we respect any software security norms (Kiln is a SOC 2 Type 1 and Type 2 company).
Actively suggest continuous improvement of Kiln's platform and engineering practices.
Communicate with other Kiln teams to help them understand the Software roadmap and technical challenges.
Stack: TypeScript, React, PHP/Laravel, REST API
Other engineering stacks: Software (Golang); Smart contract (Solidity); Infrastructure (Kubernetes)
Requirements:
+3 years of experience as a Software Engineer (Backend, Frontend, or Fullstack), designing, building, and deploying user-facing and API-based products.
Proven TypeScript and React programming skills — professional experience in a production environment.
Familiar with software development best practices (Test, CI/CD, DevOps, Security…).
Previous experience collaborating in a team-based development environment is required (sprints, code reviews, standups, problem-solving sessions).
Curiosity and ability to dig into a topic and follow through.
Ability to balance between impact and thoroughness in a fast-paced environment.
Experience in web3, blockchain, and cryptocurrency, or proven personal experience (eg. Github project, hackathon...) — with solid understanding of protocols, staking, and DeFi.
Fluent in English.
Nice-to-have:
Familiar with Ethereum Virtual Machine and smart contracts.
Experience building dApps using libraries such as Wagmi and Viem.
Knowledge on how to craft raw blockchain transactions.
PHP/Laravel programming skills.
Experience in a fast-growing, early-stage startup.
Living close to Paris or London
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 $13+ billion in crypto assets staked through our platform, Kiln has established a strong presence on Ethereum, managing over 5% of the network through 45,000+ validators — all with zero slashing events.
Kiln serves more than 140 leading customers, including Binance, Bitpanda, BitGo, Fireblocks, VanEck, and TrustWallet.
Our team of 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:
A fast-paced, no bureaucratic work environment
Equity share options in the business: if Kiln succeeds, we all succeed!
Competitive salary
Flexible holiday
Flexible remote working
Internet connection paid up to €50/month
Significant personal development and tech conf budget
Your interview process:
Recruiter Interview (40 min)
Take-home test (< 3 hours)
Technical Interview (60 min)
Core Values Interview (45 min)
Founders Interview (30 min)
Offer!
Please note that we are not sponsoring visas for persons without work authorization in the UK or the EU. This role is specifically for employees (no B2B or contractors) based in the EU and the UK.
Listed in: Cryptocurrency Jobs, Remote Crypto Jobs, Web3 Crypto Jobs, Developer Web3 Jobs, Engineering Crypto Jobs, Full Time Crypto Jobs, TypeScript Crypto Jobs, Golang Crypto Jobs, React Web3 Jobs, Security Crypto Jobs, EVM Web3 Jobs, Devops Crypto Jobs, Startup Web3 Jobs, Recruiter Crypto Jobs, DeFi Web3 Jobs, Frontend Web3 Jobs, Solidity Crypto Jobs, Contract Web3 Jobs, Kubernetes Web3 Jobs, Data Web3 Jobs, Smart Contract Web3 Jobs, Ethereum Web3 Jobs.


People PartnerTrezor.io
Used CryptoJobsList to publish a position and I'm pleasantly surprised, we've received a large number of relevant applications. We have several solid candidates in the process.

FounderSparkyFi
CryptoJobsList was a game-changer for us. We were searching for passionate, Web3-native talent to build our social media team, and the platform delivered beyond our expectations. We received over 150 applications from an incredible pool of qualified candidates, making it easy to connect with individuals who truly understood the DeFi space. Thanks to CryptoJobsList, we successfully hired two amazing social media managers who are now essential members of our team. The entire process was seamless and incredibly effective!


Co-Founderi10x
CryptoJobsList made it incredibly easy for us to find the right Co-Founder & CTO — great talent, smooth process, and impressive results.


Head of GTMMimic Protocol
CryptoJobsList made the hiring process much easier and delivered a lot of quality candidates to choose from. We ended up hiring one of them, so definitely a good result!


Chief of Staff & SVP SalesTheStreet / Roundtable
CryptoJobsList has been great! About to hire 1 new rep and considering countless others as well.


Co-Founder and COOMultiverse
The application quantity is much more than anticipated! We also found several attractive candidates. The salary, location, and skill set range is very broad, making finding the right person for the job pretty easy. It’s not the first time we post an open position here, and that won’t be the last.


Co-Founder and COOStickies
We hired our Head of Social through CryptoJobsList and received an impressive talent pool of over 80 passionate individuals interested in working in the crypto space. After interviewing 10 candidates, we found the perfect fit for our team. The platform was easy to use, and the team was incredibly responsive and helpful throughout the hiring process. As a consumer web3 startup, we highly recommend CryptoJobsList for any company looking to hire top talent in the crypto industry.


Co-Founder, Head of Product & OpsID8R
We've had a first round of interviews with 5+ applicants from CryptoJobsList and, like last time, it has been our best source of leads. We are still in the process of doing a second round of interviews and anticipate closing the role in the next week or two.


HR DirectorP2P.org
At P2P.org, we recognize the importance of connecting talented individuals with exciting opportunities in the dynamic and ever-evolving world of cryptocurrency and blockchain. As a company at the forefront of the blockchain and crypto revolution, we know the importance of connecting with top talent in the industry. That's why we consider CryptoJobsList to be an invaluable resource for finding and attracting the best and brightest minds in this field. It has proven to be a valuable and effective tool in our hiring efforts and we are grateful for the opportunities it has presented us.


Co-Founder & CEOWalletChat
We have already made several hires via CryptoJobsList. So far, we are happy with each one of them. CJL offers an easy to use platform and the candidates we receive are generally well versed with and a good fit for the web3 space — which is a challenge when hiring via traditional platforms. On top of this, the team has been super responsive whenever we've tried reaching out and we feel like we are talking to a friend. Excited to keep seeing CJL grow together with us, as we deliver the future of wallet-to-wallet messaging!


Founder & COOAavegotchi | Pixelcraft Studios
We've got a really strong looking shortlist and will be having calls all through this week with those. I'm quite pleased with the results!


Chief of StaffUMA Project
We recently switched to using CryptoJobsList as our primary crypto job board provider, and I have been pretty impressed thus far with the talent coming through. The latest feature of having a dashboard is a game changer, so thank you!


Co-founderFloating Point Group
Kevin here, founder of Floating Point Group. I just wanted to say that you guys are killing it. Some of our best applicants are coming from your site. Very happy with what we’re seeing so far!

Co-founder & HostEpicenter Podcast
I'd recommend using CryptoJobsList if you're looking to hire someone in crypto, they cater to a number of different skill sets including marketing and community sales and business development traders and of course, developers and engineers. We hired our CMO here!

Head of People OperationsStatus
What made CJL stand out from other options? The availability oftalent that was really passionate about working in the crypto space. We received 150+ applications, interviewed 10 and hired the one from CryptoJobsList.


People PartnerTrezor.io
Used CryptoJobsList to publish a position and I'm pleasantly surprised, we've received a large number of relevant applications. We have several solid candidates in the process.

FounderSparkyFi
CryptoJobsList was a game-changer for us. We were searching for passionate, Web3-native talent to build our social media team, and the platform delivered beyond our expectations. We received over 150 applications from an incredible pool of qualified candidates, making it easy to connect with individuals who truly understood the DeFi space. Thanks to CryptoJobsList, we successfully hired two amazing social media managers who are now essential members of our team. The entire process was seamless and incredibly effective!


Co-Founderi10x
CryptoJobsList made it incredibly easy for us to find the right Co-Founder & CTO — great talent, smooth process, and impressive results.


Head of GTMMimic Protocol
CryptoJobsList made the hiring process much easier and delivered a lot of quality candidates to choose from. We ended up hiring one of them, so definitely a good result!


Chief of Staff & SVP SalesTheStreet / Roundtable
CryptoJobsList has been great! About to hire 1 new rep and considering countless others as well.


Co-Founder and COOMultiverse
The application quantity is much more than anticipated! We also found several attractive candidates. The salary, location, and skill set range is very broad, making finding the right person for the job pretty easy. It’s not the first time we post an open position here, and that won’t be the last.


Co-Founder and COOStickies
We hired our Head of Social through CryptoJobsList and received an impressive talent pool of over 80 passionate individuals interested in working in the crypto space. After interviewing 10 candidates, we found the perfect fit for our team. The platform was easy to use, and the team was incredibly responsive and helpful throughout the hiring process. As a consumer web3 startup, we highly recommend CryptoJobsList for any company looking to hire top talent in the crypto industry.


Co-Founder, Head of Product & OpsID8R
We've had a first round of interviews with 5+ applicants from CryptoJobsList and, like last time, it has been our best source of leads. We are still in the process of doing a second round of interviews and anticipate closing the role in the next week or two.


HR DirectorP2P.org
At P2P.org, we recognize the importance of connecting talented individuals with exciting opportunities in the dynamic and ever-evolving world of cryptocurrency and blockchain. As a company at the forefront of the blockchain and crypto revolution, we know the importance of connecting with top talent in the industry. That's why we consider CryptoJobsList to be an invaluable resource for finding and attracting the best and brightest minds in this field. It has proven to be a valuable and effective tool in our hiring efforts and we are grateful for the opportunities it has presented us.


Co-Founder & CEOWalletChat
We have already made several hires via CryptoJobsList. So far, we are happy with each one of them. CJL offers an easy to use platform and the candidates we receive are generally well versed with and a good fit for the web3 space — which is a challenge when hiring via traditional platforms. On top of this, the team has been super responsive whenever we've tried reaching out and we feel like we are talking to a friend. Excited to keep seeing CJL grow together with us, as we deliver the future of wallet-to-wallet messaging!


Founder & COOAavegotchi | Pixelcraft Studios
We've got a really strong looking shortlist and will be having calls all through this week with those. I'm quite pleased with the results!


Chief of StaffUMA Project
We recently switched to using CryptoJobsList as our primary crypto job board provider, and I have been pretty impressed thus far with the talent coming through. The latest feature of having a dashboard is a game changer, so thank you!


Co-founderFloating Point Group
Kevin here, founder of Floating Point Group. I just wanted to say that you guys are killing it. Some of our best applicants are coming from your site. Very happy with what we’re seeing so far!

Co-founder & HostEpicenter Podcast
I'd recommend using CryptoJobsList if you're looking to hire someone in crypto, they cater to a number of different skill sets including marketing and community sales and business development traders and of course, developers and engineers. We hired our CMO here!

Head of People OperationsStatus
What made CJL stand out from other options? The availability oftalent that was really passionate about working in the crypto space. We received 150+ applications, interviewed 10 and hired the one from CryptoJobsList.


Project LeadTHORChain
We received over a dozen high-quality job applications in less than a week to this post. It has been very effective and would highly recommend. Service is excellent, UX simple. Thanks CryptoJobsList!


General ManagerMeld Gold
Great experience. We have had excellent candidates via Raman and the CryptoJobsList platform. Will definitely use again as we build out other components of the team!

Communications LeadKleros
CryptoJobsList drives more qualified leads than AngelList!


Cofounder & COOFleek
We've gotten great leads for developers from CryptoJobsList. I'm definitely a continuous user going forward!

Founder & CEODataStreamX
The quality of the candidates are by far more relevant and experienced than on other boards. They are in the crypto space and have the past experience to hit the ground running.


Co-founder & COOAID Technology
Each time their services have been nothing short of exceptional. The platform has consistently provided us with a large pool of qualified candidates for various roles within our company. The user-friendly interface and the efficient recruitment process has made it easy for us to fill positions quickly and effectively. We are grateful for the help and support provided by CJL and highly recommend their services to anyone looking to fill roles in the crypto industry.

Marketing & Communications DirectorAdel
We posted on CryptoJobsList looking for marketing help with community engagement, digital marketing and social media and found two highly qualified candidates within days! We interviewed and hired them within three weeks.


Project LeadTHORChain
We received over a dozen high-quality job applications in less than a week to this post. It has been very effective and would highly recommend. Service is excellent, UX simple. Thanks CryptoJobsList!


General ManagerMeld Gold
Great experience. We have had excellent candidates via Raman and the CryptoJobsList platform. Will definitely use again as we build out other components of the team!

Communications LeadKleros
CryptoJobsList drives more qualified leads than AngelList!


Cofounder & COOFleek
We've gotten great leads for developers from CryptoJobsList. I'm definitely a continuous user going forward!

Founder & CEODataStreamX
The quality of the candidates are by far more relevant and experienced than on other boards. They are in the crypto space and have the past experience to hit the ground running.


Co-founder & COOAID Technology
Each time their services have been nothing short of exceptional. The platform has consistently provided us with a large pool of qualified candidates for various roles within our company. The user-friendly interface and the efficient recruitment process has made it easy for us to fill positions quickly and effectively. We are grateful for the help and support provided by CJL and highly recommend their services to anyone looking to fill roles in the crypto industry.

Marketing & Communications DirectorAdel
We posted on CryptoJobsList looking for marketing help with community engagement, digital marketing and social media and found two highly qualified candidates within days! We interviewed and hired them within three weeks.


