Backend Engineer - Web3 & Smart Contracts
deCircle
A dynamic tech company in California is seeking a highly skilled Backend and Smart Contract Engineer. The role involves designing and developing core APIs, deploying smart contracts, and collaborating with a driven team. The ideal candidate has over 3 years of backend experience, strong skills in Python and Solidity, and thrives in fast-paced, startup environments. This is an exciting opportunity to contribute to innovative solutions in the Web3 space. #J-18808-Ljbffr deCircle
- A leading Web3 technology firm in the San Francisco Bay Area is seeking a Backend / Smart Contract Engineer to develop the core infrastructure for their DeFi solutions. Candidates should have over three years of experience in backend engineering and hands-on smart contract...SuggestedContract work
- A leading DeFi company is seeking a Backend Developer to work remotely from anywhere in the world. Responsibilities include developing backend services for DeFi applications and engaging in smart contract development. Candidates should have at least 5 years in a backend...SuggestedContract workRemote work
- About Us Odos (odos.xyz) is a smart order routing (SOR) solution that allows users... ...are leading the way in advancing the Web3 user experience. We are... ...the Role We\'re looking for a talented Backend / Smart Contract Engineer to help design and build the core infrastructure...SuggestedContract work
$150 per hour
Polychain is seeking a Backend Engineer to support our Accounting and Reporting Systems. This contract role is essential to building APIs, managing crypto asset data, and delivering... ...data accessibility for portfolio management, smart contract vesting, and counterparty exposure....SuggestedContract workLocal area- Overview Odos (odos.xyz) is a smart order routing (SOR) solution that allows users... ...are leading the way in advancing the Web3 user experience. We are... ...crucial role in a lean team as a core Backend and Smart Contract Engineer. This role will be responsible for building...SuggestedContract work
$100k - $400k
...combine a powerful orchestration engine with a seamless consumer app... ...Stack Software Engineer (Web3) with a strong background in... ...web applications and scalable backend systems. As a member of our team... ....js, Go, Java, or similar) Smart contracts and on‑chain interactions (e....Work at officeRemote work2 days per week$123.7k - $254.67k
A leading tech company is seeking a Senior Backend Engineer to design, build, and scale contract and billing systems. The role involves implementing backend solutions to manage contracts, ensuring accuracy and compliance, while working closely with finance and product teams...Contract work- ...payment platform, including smart contract interactions, payment processing... .... Mentor and guide junior engineers, fostering a culture of technical... ...platform. Expertise in backend development: Experience with... ...user data and transactions. Web3 and blockchain experience (nice...Contract work
$120k - $150k
...\'re looking for exceptional engineers to define and build the next... ...at the forefront of security, smart encryption, key management, data... ...Skills Proficiency in backend development using Python Experience... ..., Reporting Systems - Contract 6mo San Francisco, CA $160...Full timeContract workH1bRemote workWork from home- Mercor is looking for a Backend Engineer to build core platform systems ensuring secure, reliable, and scalable operations in San Francisco. You will focus on Contracts and Identity & Access, developing infrastructure for backend services that support various complex workflows...Relocation package
- ...Dashdash, Inc. is seeking a Blockchain Engineer to help build Fabric, a decentralized application for robotics communication. In this role, you'll be responsible for implementing smart contracts and core blockchain components in collaboration with a focused team. The ideal...Full timeRemote work
$150 per hour
Full Stack Engineer, Reporting Systems - Contract 6mo Polychain is seeking a versatile Full Stack Engineer to architect... ...full-stack engineering experience. Backend proficiency with Go, Node.js, or... ...: on-chain transactions, smart contract events, and DeFi protocols....Contract workLocal area- ...Design, develop, and maintain scalable backend services to help us serve millions of users... ...features. Collaborate with frontend engineers to design and implement RESTful APIs and... ...on systems handling high traffic. Contract or staffing firm backgrounds: These candidates...Contract workWork experience placementWork at officeImmediate start
$180k - $220k
...Career Renew is recruiting for one of its clients a Senior Backend Engineer - Blockchain - this is a fully remote role for N America based... ...in TypeScript and/or Rust. ~ Basic understanding of smart contract development for EVM-compatible chains, and optionally for non...Contract workRemote workWorldwide$160k - $180k
...technology firm in San Francisco is looking for a Senior Software Engineer to own major parts of their AI stack. This role involves... ...engineering experience, particularly with ML products, and strong backend engineering skills. The position also offers a competitive salary...Contract work- ...features. Implement responsive designs and ensure the technical feasibility of UI/UX designs. Integrate with blockchain technologies and Web3 APIs. Optimize applications for maximum speed and scalability. Conduct code reviews and provide constructive feedback to team...Remote work
- ...notes, and more. We're experiencing explosive growth, with contracts and pilots at top US health systems like Cedars‑Sinai,... ...out to become a $100B+ company. We're seeking a talented Backend Software Engineer to join our innovative team and play a crucial role in developing...Work at officeMonday to Friday
- Backend Engineer Department: Engineering Employment Type: Full Time Location: San Francisco / Boston Description We’re looking for a Backend... ...databases, and supporting application performance through smart caching, observability, and CI/CD workflows. Product‑Aware...Full timeWork at officeFlexible hours
$160k - $230k
...evaluation, and deployment data across raw, transformed, and feature-engineered layers Ensure backwards compatibility and feature versioning... ...any point in time Help define and enforce the principle of "smart data, dumb functions": doing as much as possible in the data...Work at officeFlexible hours- Role Summary Own the backend that powers Mem0’s memory platform. You’ll design clean REST... ...’ll Do Design & ship REST APIs: Define contracts, versioning, auth, rate limits; write... ..., whether it comes from a founder or an engineer who joined yesterday. We let results and...Work at officeRemote work
- ...in San Francisco seeks an experienced Full Stack Software Engineer specializing in Web3 to design and develop innovative systems. The ideal candidate... ...will have extensive experience with both frontend and backend development, as well as knowledge of blockchain technologies...
$150k - $190k
...which removes the need to code smart contracts by hand and enables... ...the role As a Frontend Engineer at Halliday, you'll build the... ...frontend stack. Innovate on Web3 UX : Push the boundaries of... ...when needed, including APIs and backend services. Design Sensibility...RelocationVisa sponsorship- ...manager alike. Our innovative platform is engineered from the ground up to boost operations... ...collaboration with designers ~ Familiarity with backend integration ( Node.js , GraphQL, REST,... .... Open standards, clean APIs, and clear contracts win over custom complexity, even if the...Full timeContract workImmediate startShift work
- ...loves to live on the edge! We are a fully distributed team of smart people who are passionate about changing the world one voice at... ...eye for code quality and you strive to uphold best practices in engineering, security, and design Why you should choose us: ~ You’ll be...Remote workFlexible hours
- ...ecosystem used to manage it. We believe that advancements in smart infrastructure are critical to enabling a safer and more... ...Responsibilities Collaborate with experienced software engineers on backend projects. These projects can involve: Developing features...Full timeTemporary workInternshipSummer internshipWork at officeLocal area
- A leading fintech recruitment agency is seeking an experienced Backend Engineer for a contract position fully remote within the United States. The role focuses on building greenfield services, designing RESTful APIs, and working with cloud-native architectures. Ideal candidates...Contract workRemote work
$200k - $280k
...leading FinTech company is seeking a Senior/Staff Engineer in San Francisco or New York. You will design and build scalable backend systems that enable high-volume global... ...,000 - $280,000 plus equity and a full-time contract. Benefits include private medical insurance,...Full timeContract work$325k - $405k
AI Chopping Block, Inc. is looking for a Backend Engineer in San Francisco, California. In this role, you will design and build systems to process millions of contracts and collaborate with product and legal teams. The position offers a competitive salary range of $325K...$230k - $270k
...Staff Backend Engineer - Commerce San Francisco About the Role Together AI is seeking a Staff Backend Engineer to own the technical... ...billing pipeline infrastructure, spanning usage metering, contract billing, entitlements, spend governance, and payments processing...Full timeContract work- ...time Location Type On-site Department Engineering ABOUT US Our team includes builders from Facebook , LinkedIn , Uber and leading Web3 projects like Rainbow , Xai , Ex Populus... ...ROLE We are looking for a Founding Senior Backend Engineer to lead the design and development...Full time
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Backend Engineer - Web3 & Smart Contracts. Be the first to apply!
- entry level back-end developer San Francisco, CA
- lead backend developer San Francisco, CA
- senior backend developer San Francisco, CA
- back-end developer San Francisco, CA
- backend python developer San Francisco, CA
- backend software engineer San Francisco, CA
- remote back end developer San Francisco, CA
- backend intern San Francisco, CA
- ibm backend developer
- go backend developer


