Full-Stack Developer Jobs

Ethereum

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🔥 Senior Backend Engineer - On-Chain Market Making

Posted about 5 hours ago

📍 Switzerland

🧭 Full-Time

🔍 DeFi

🏢 Company: Arrakis Finance

🔧 Requirements

3+ years of experience with C++ / Rust / Solidity
Good understanding of the financial market, order books, market making, arbitrage and/or markets microstructure
Experience working with SQL databases
Experience with Google Cloud / AWS
Experience working with containers such as Docker / Kubernetes
Awareness of security principles for critical finance applications, both on and off-chain.

💡 Responsibilities

Creation of new on-chain trading strategies
Monitoring, tuning and improving market making performance across chains.
Develop backend infrastructure for our market making operations
Develop, refine and implement strategies and infrastructure for algorithmic liquidity provisioning for the major tokens of the industry

AWS Backend Development Docker SQL Blockchain Ethereum Kubernetes C++Algorithms Data Structures Rust RESTful APIs Financial analysis

Posted about 5 hours ago

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🔥 Staff Blockchain Engineer, Protocols

Posted 2 days ago

📍 United Kingdom, Denmark

🧭 Full-Time

🔍 Blockchain

🏢 Company: Chainalysis

🔧 Requirements

Extensive experience (8+ years) in software engineering, with a strong focus on blockchain and cryptocurrency technologies and protocols.
Proven track record of designing and implementing large-scale, distributed systems in a cloud environment (AWS preferred).
Deep understanding and practical experience with multiple blockchain protocols (e.g., Ethereum, Bitcoin, Solana, Optimistic rollups, ZK rollups).
Demonstrated ability to lead and mentor engineering teams, driving technical excellence and innovation.
Strong architectural skills, with the ability to design and implement scalable and reliable data systems.
Excellent communication and collaboration skills, with the ability to effectively communicate complex technical concepts to both technical and non-technical audiences.
A proven history of successfully delivering large scale projects.

💡 Responsibilities

Provide architectural guidance and technical leadership in the design and implementation of highly scalable, reliable, and performant data systems for ingesting and parsing cryptocurrency blockchain data.
Define and enforce best practices for software development, data engineering, and blockchain integration across the PA team.
Lead the evaluation and adoption of new blockchain technologies, tools, and methodologies to enhance the platform's capabilities.
Drive the long-term technical roadmap for the PA team, aligning with the company's strategic objectives and anticipating future industry trends.
Architect and implement solutions to significantly scale the collection of blockchain data, enabling faster and more efficient onboarding of new chains.
Identify and resolve performance bottlenecks, ensuring optimal efficiency and reliability of data ingestion and processing pipelines.
Design and implement robust monitoring and alerting systems to ensure the health and stability of production services.
Serve as a subject matter expert on cryptocurrency and blockchain technologies, providing guidance and mentorship to team members and other stakeholders.
Conduct in-depth research and analysis of emerging blockchain protocols and technologies, evaluating their potential impact on Chainalysis products and services.
Represent the PA team in cross-functional technical discussions and initiatives, fostering collaboration and knowledge sharing across the organization.
Collaborate closely with product management, data science, and other engineering teams to define and deliver innovative solutions that meet customer needs.
Mentor and guide junior and mid-level engineers, fostering their technical growth and development.
Lead technical design reviews and code reviews, ensuring high-quality and maintainable code.
Support production services including debugging and maintenance, and create strategies to reduce production issues.

AWS Leadership PostgreSQL Blockchain Cloud Computing Ethereum Java Kafka Kubernetes Software Architecture TypeScript Data engineering Communication Skills CI/CD Problem Solving Mentoring Terraform Scala Software Engineering

Posted 2 days ago

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🔥 Full Stack Engineer - Katana

Posted 2 days ago

📍 EMEA

🧭 Full-Time

🔍 Software Development

🏢 Company: Polygon Labs

🔧 Requirements

6–8+ years of experience building full-stack web applications — from polished frontends to production-grade backends.
4+ years hands-on with blockchain protocols, smart contracts, or web3 dev tools.
Deep expertise with modern JS frameworks like React, Next.js, or Vue.js.
Comfortable with Node.js, REST APIs, microservices, and containerized stacks (Docker, Kubernetes).
You speak fluent SQL (Postgres, MySQL) and NoSQL (MongoDB, Firestore).
Able to read Solidity, integrate EVM-based contracts, and understand core blockchain concepts.
Proven success in agile teams, with a passion for shipping fast and making data-driven decisions.

💡 Responsibilities

Architect, develop, and maintain powerful web applications integrated with Katana’s cutting-edge Layer 2 blockchain infrastructure.
Create beautiful, responsive interfaces that simplify complex DeFi concepts for real-world users.
Develop robust backend systems and APIs that interact with smart contracts, manage blockchain data, and scale to meet user demand.
Partner closely with protocol and smart contract engineers to bring DeFi primitives (AMMs, lending, farming, and more) to the frontend in seamless, elegant ways.
Optimize data pipelines and application performance to handle high-throughput activity and real-time blockchain data.
Implement wallet connections, authentication flows, and security best practices that users can trust.
Keep tabs on the latest developments in DeFi, Layer 2 scaling, and the ever-evolving web3 landscape — and bring those insights back to the product.

Backend Development Docker Node.js PostgreSQL SQL Agile Blockchain Ethereum Express.js Frontend Development Full Stack Development Kubernetes MongoDB React.js Vue.Js REST API Next.js Web3.js CI/CD RESTful APIs Microservices JSON

Posted 2 days ago

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🔥 Full Stack Developer

Posted 2 days ago

📍 Mumbai, Maharashtra, India, Buenos Aires, Buenos Aires, Argentina, Berlin, Berlin, Germany, Amsterdam, North Holland, Netherlands, Rio de Janeiro, State of Rio de Janeiro, Brazil

🔍 DeFi

🏢 Company: Decentralized Masters👥 11-50 Decentralized Finance (DeFi)Financial Services

🔧 Requirements

3–5+ years in a Full Stack Developer role (or similar).
Writing Smart Contracts for Ethereum and Solana
Proven experience building backend systems (Node.js, Express/Nest.js, REST/GraphQL APIs).
Experience with front-end technologies (React, Redux Toolkit, Tailwind/Figma handoff).

💡 Responsibilities

Design, build, and scale backend services for managing crypto portfolios and estate plans (Node.js, PostgreSQL, etc.).
Develop robust APIs, server-side logic, and database schemas.
Implement secure systems for authentication, encryption, and potentially private key/passkey management.
Contribute to the development of sleek, responsive UIs using React and integrate backend services into the frontend stack.
Build reusable components and ensure pixel-perfect implementation from design mockups.
Integrate blockchain functionality using libraries like Ethers.js, Viem, Wagmi.
Support smart account and wallet functionality, including gasless transactions and smart contract interaction.
Write unit/integration tests and optimize app performance.
Collaborate on CI/CD pipelines and deploy across cloud platforms.
Partner closely with other teams to align features with business needs.
Provide input into technical architecture and roadmap planning.

AWS Docker GraphQL Node.js PostgreSQL Ethereum Express.js Figma Frontend Development Full Stack Development Git TypeScript REST API Nest.js React Web3.js CI/CD

Posted 2 days ago

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🔥 Senior Blockchain Developer

Posted 9 days ago

📍 Worldwide

🧭 Full-Time

🔍 Financial Services

🏢 Company: Technance

🔧 Requirements

4+ years of experience in software engineering, with 2+ years in blockchain development
Strong experience in Solidity, smart contract development, and Ethereum toolchains (e.g., Hardhat, Foundry, Ethers.js)
Deep understanding of EVM, gas efficiency, and contract security patterns
Experience with backend systems using Go, TypeScript, or Python
Familiarity with multisig wallets, oracles, bridges, staking mechanisms, and DeFi integrations
Knowledge of blockchain-specific risks and ability to mitigate them through smart architecture

💡 Responsibilities

Design and build smart contracts for Ethereum and EVM-compatible chains
Integrate blockchain protocols into backend systems and trading platforms
Contribute to the architecture and security of on-chain and off-chain interactions
Build tooling for transaction automation, gas optimization, and risk controls
Collaborate with backend, infrastructure, and security teams on system-wide designs
Stay current on blockchain protocol updates, EIPs, L2s, and DeFi trends

Backend Development Python Blockchain Ethereum TypeScript Go Web3.js

Posted 9 days ago

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🔥 Product Engineer (Protect)

Posted 9 days ago

📍 Worldwide

🧭 Full-Time

🔍 Software Development

🏢 Company: Flashbots👥 11-50💰 $60,000,000 Series B almost 2 years agoCryptocurrency Ethereum Blockchain

🔧 Requirements

2+ years of experience building backend services, frontends, and developer tools.
You excel in dynamic, asynchronous environments, exhibiting a strong bias for action and balancing independent work with team collaboration.
Your technical expertise is complemented by broad domain knowledge, enabling you to champion and build a wide range of solutions.

💡 Responsibilities

Develop our core orderflow products like Flashbots Protect and MEV-Share that are used by millions of Ethereum users, while also innovating on net new features and products to upgrade the transacting experience in crypto.
Collaborate with marquee crypto partners like Uniswap and Chainlink to design and productionize cutting-edge features
Champion documentation, testing, QA, and tasteful API and UX design to make sure our products are reliable, accessible, and delightful to use.
Create and use analytics to help us better understand and support our customers, and drive insights about product improvements.

Backend Development Ethereum Express.js Frontend Development Full Stack Development Git Javascript QA React.js UI Design Product Development API testing CI/CD RESTful APIs NodeJS

Posted 9 days ago

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🔥 Content & Communications Manager

Posted 9 days ago

📍 Americas, Europe

🔍 Web3

🔧 Requirements

3+ years of experience in content marketing, communications, PR, or a related field, within the Ethereum / Web3 ecosystem
Proven ability to execute campaign-driven content strategies while also managing one-off, high-priority initiatives.
Strong ability to craft compelling narratives, messaging, and positioning for technical and non-technical audiences.
Experience working with media, securing press coverage, and managing external communications.
Experience with event programming, speaker management, and industry relations is a plus.
Ability to adapt quickly and execute efficiently in a fast-paced, evolving environment with shifting priorities.
Based in the Americas, Europe, or adjacent time zones, with the ability to collaborate in a partially async environment

💡 Responsibilities

Develop and execute a content strategy that aligns with Obol’s larger marketing campaigns and SEO goals, ensuring strong storytelling and cohesive messaging across all initiatives.
Own and lead Obol’s social media presence, managing the content calendar, publishing, and engagement.
Lead the production of long-form content (blogs, newsletters, thought leadership pieces) and short-form content (social media, scripts, micro-content), with assistance from the broader marketing team.
Craft compelling narratives that reinforce Obol’s leadership position and engage key audiences.
Ensure consistency in tone, messaging, and style across all external communications.
Build and maintain relationships with journalists, analysts, and industry influencers.
Develop proactive media strategies that align with ongoing campaigns while also handling opportunistic media outreach for major industry moments.
Craft compelling media pitches, secure press coverage, and manage public messaging for key announcements.
Develop press materials, talking points, and external messaging frameworks.
Own speaker and sponsorship strategy as part of Obol’s broader event campaigns, ensuring alignment with key marketing goals.
Lead speaker submissions for industry conferences and events, curating panels and sessions that amplify Obol’s thought leadership.
Develop programming for Obol-led events, workshops, and panels, ensuring a seamless connection to larger marketing efforts.
Identify reactive and one-off high-value speaking and sponsorship opportunities to enhance brand visibility.

Project Management Ethereum Content creation Content management Web3.js Communication Skills Analytical Skills Collaboration SEO RESTful APIs Writing Marketing Digital Marketing Data analytics

Posted 9 days ago

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🔥 Key Account Manager - Rollups

Posted 15 days ago

📍 United States

🔍 Web3

🏢 Company: Gelato👥 101-250💰 $240,025,345 almost 4 years agoLogistics E-Commerce Printing

🔧 Requirements

Minimum of 3 years experience in key account management or a related role in web3.
Understanding of web3 infrastructure, especially pertaining to the RaaS business.
Strong commercial know-how and the ability to understand and discuss web3-specific infrastructure services like Bridging, RPCs, indexers or oracles.
In-depth understanding of Rollups.
Experience with CRM software like Hubspot.
Excellent communication and interpersonal skills.
Problem-solving mindset with a focus on customer satisfaction.

💡 Responsibilities

Maintain and develop relationships with key accounts, ensuring their ongoing satisfaction and success with our products and services.
Identify opportunities for upselling and cross-selling additional services and solutions to drive revenue.
Act as the primary point of contact between the client and our technical teams, translating technical requirements and ensuring clear communication.
Provide after-sales support to key accounts, troubleshooting issues and ensuring timely resolution in collaboration with the support and technical teams.
Develop and implement account plans that outline short- and long-term strategies for client growth and retention.
Gather and relay customer feedback to the product development team to drive continuous improvement of our offerings.
Monitor and report on key account performance metrics, identifying areas for improvement and growth.

Ethereum Web3.js CRM Customer support

Posted 15 days ago

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🔥 Director of Product Marketing

Posted 15 days ago

📍 North America

🧭 Full-Time

💸 200000.0 - 250000.0 USD per year

🔍 Blockchain

🏢 Company: Eigen Labs

🔧 Requirements

Proven experience in senior-level product marketing roles, with a track record of success developing and executing go-to-market strategies and product launches.
5+ years in technical product marketing product management roles, with a deep understanding of the motivations and needs of developer audiences.
A familiarity of the Ethereum developer ecosystem and its core technical audiences. Strong candidates will have direct experience marketing for a crypto developer ecosystem.

💡 Responsibilities

Drive the end-to-end strategy and execution for product launches, owning the cross-functional release marketing calendar and ensuring high-impact rollouts across channels, aligned with our evolving platform and AVS offerings.
Craft compelling, technically grounded narratives that differentiate EigenLayer in the market—translating complex concepts into clear value propositions tailored to developers, operators, partners, and the broader ecosystem.
Continuously test, refine, and optimize the programs and assets that fuel product growth—from collateral and events to website and co-marketing—while leveraging competitive insights and ecosystem metrics to inform strategy.

Blockchain Cloud Computing Data Analysis Ethereum Product Management Communication Skills Analytical Skills RESTful APIs Cross-functional collaboration Market Research Marketing Strategic thinking Digital Marketing Budget management

Posted 15 days ago

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🔥 Optimism Staff Engineer

Posted 16 days ago

📍 United States

🧭 Full-Time

🔍 Software Development

🏢 Company: Agora👥 101-250💰 $34,000,000 Series B about 1 year agoReal Estate Investment PropTech Real Estate FinTech Software

🔧 Requirements

6+ years of experience in production software development
3+ years of hands-on experience with front-end frameworks like React, Next.js, Remix or equivalent
Strong TypeScript fundamentals and expertise
Deep understanding of Ethereum architecture and familiarity with L2 solutions
Ability to read Solidity code
Experience building or working with indexers (e.g., Subgraph, Shovel, Ponder)
Strong computer science fundamentals, particularly in building scalable and maintainable systems

💡 Responsibilities

NOT STATED

Software Development SQL Ethereum Frontend Development React.js Software Architecture TypeScript Next.js Web3.js RESTful APIs

Posted 16 days ago

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