Web3 Java Smart Contract Jobs in United States
















Job Title | Company Name | Salary | Location | Tags | Posted | |
---|---|---|---|---|---|---|
Crypto Jobs List | 200k-240k | 📍 New York City | DeveloperSolidityDeFiResearch | 1w |

Jun 24, 2025

About the Company
Our client is building a new kind of trading platform where attention becomes an asset. They’re developing a system that blends real-time social media trends with financial markets, allowing users to discover and trade the world’s most talked-about topics. If you’ve ever been fascinated by market design or the intersection of culture and finance, this is a rare opportunity to help shape a groundbreaking consumer trading experience.
- Early-stage team of ~8, all based in NYC
- Fully in-person, collaborative environment
- Everyone contributes directly—whether through code, design, or user interaction
Culture & Values
- Invent, Don’t Iterate: Focused on creating entirely new financial primitives rather than tweaking existing ones.
- Teach Through Product: The best tools reveal needs people didn’t realize they had.
- Everyone Builds: No bystanders—just tightly aligned operators solving hard technical and UX problems in person.
Role: Blockchain Engineer
You’ll join the core product team to design and build smart contracts and backend infrastructure powering new types of financial instruments. Expect to work on fast feedback loops, performance-critical code, and backend systems that abstract complexity for users while enabling novel market behaviors.
Key Responsibilities
- Build smart contracts for DeFi systems related to perpetuals, options, or order books
- Develop robust, high-performance backend services (Rust, Java preferred)
- Architect scalable systems and secure infrastructure
- Collaborate closely with product, design, and research teams
Requirements
- 4+ years of backend experience using Rust, Java, or similar modern languages
- Proven track record in DeFi protocols, ideally involving live contracts and real users
- Strong understanding of database systems and distributed infrastructure
- Startup mindset: self-directed, ownership-driven, and willing to push boundaries
- Clear communicator and effective collaborator
Bonus Points
- Deep knowledge of Solidity and smart contract tooling (Foundry, Slither)
- Parallelization expertise (e.g. optimistic concurrency, pipelining)
- Experience designing production APIs
- Familiarity with cloud systems (especially AWS)
- Contributions to open source or crypto projects
Tech Stack
- Backend: Rust, Java
- Smart Contracts: Solidity, Foundry, Slither
- Design & Research: Python, PyTorch
Compensation
- Competitive salary
- Significant equity upside on a standard 4-year vesting schedule
Listed in: Crypto Jobs, Developer Crypto Jobs, Solidity Crypto Jobs, DeFi Web3 Jobs, Research Web3 Jobs, Smart Contract Crypto Jobs, Web3 Crypto Jobs, Python Crypto Jobs, Java Crypto Jobs.


Head of GTMMimic Protocol
Crypto Jobs List 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.


Head of GTMMimic Protocol
Crypto Jobs List 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.