We are seeking a Site Reliability Engineer to join our team to help streamline operations and maintain critical infrastructure. You’ll write custom code to automate operational tasks and support a fleet of nodes for multiple blockchain networks. You’ll also provide guidance and expertise to development teams to ensure their applications follow modern best practices. Your work will directly impact the health and stability of our L1.

About ZetaChain

ZetaChain is the first Universal Blockchain with native access to Bitcoin, Ethereum, Solana, and more, offering seamless UX and unified liquidity to the next billions of users. With its Universal EVM, ZetaChain empowers developers to build Universal Apps that operate natively across any blockchain, creating a fluid crypto ecosystem from a single platform.

• Thriving Ecosystem: 1000 dApps developed between testnet and mainnet, showcasing diverse innovation and utilization.
• Engagement: With over a million community members, ZetaChain fosters a dynamic environment for engagement, and collaboration.
• Live on Mainnet: partnered with all major exchanges.
• Activity: Our network has over 4M unique addresses and growing fast!
• Well Funded: Raised over $27M!

Find out more about our ecosystem.

Find out more about our hiring culture: Dream Team Culture.

Why You Want To Work Here

• Impactful Role: Play a pivotal role in shaping the future of a leading blockchain protocol.
• Remote Flexibility: Enjoy the freedom and flexibility of a remote work environment, ensuring a work-life balance with quarterly team meet ups to get to know each other in person.
• Cutting-Edge Technology: Dive deep into the latest advancements in blockchain technology with ZetaChain’s innovative protocol.
• Continuous Learning: Stay updated with the rapidly evolving blockchain landscape, ensuring you’re always at the forefront of the industry.
• Commitment to Open Source: We are committed to supporting open source software and use high quality open source tools internally when possible.

Requirements

Our ideal candidate description is a wish list, not a checklist. We don’t expect every applicant to tick every box. If you have a strong alignment with many of the qualifications and a passion for learning, we’d love to hear from you.

• Experience:
  • 2+ year of Software Development
  • 2+ years of Infrastructure experience
  • 2+ years of Linux and Ansible experience
  • 2+ years of Kubernetes experience
  • Must play well with others, success is a team sport and at ZetaChain everyone participates!
  • Previous Startup Experience is important. We move much faster than your typical enterprise environment.
  • Security Mindset: constantly anticipating and strategizing against potential threats and vulnerabilities in any system or process.
• Languages: Go, Ansible, Python, Terraform, Bash
• Tech stack: Grafana, Linux, Docker, Kubernetes, Cosmos SDK
• Platforms: AWS, GCP, Bare Metal
• Location:
  • Remote (USA, Argentina, or EU)
• Job Responsibilities:
  • Write code to streamline operations
  • Build monitoring and dashboards to report on server, infrastructure, and web app health
  • Deploy and maintain blockchain nodes for ZetaChain, Ethereum, Bitcoin, etc
  • Manage infrastructure for web applications
  • Ensure all processes meet our security, performance, and reliability requirements
  • Participate in on-call rotation every month
• Bonus points:
  • Familiar with DevOps, DevSecOps, GitOps methodologies & best practices
  • Understanding of blockchain (Bitcoin, Ethereum, Cosmos); smart contracts (solidity), p2p networking
  • Experience with Go (Cosmos SDK, go-ethereum, btcsuite, Tendermint Core)

Who Would Be a Good Fit for This Role?

A candidate who is a coder at heart with a diverse set of experiences. They should enjoy streamlining operations and building new services that include comprehensive monitoring.

• A seasoned developer with a solid foundation in software engineering and infrastructure
• A proactive problem-solver with a track record of ensuring system reliability and scalability, now ready to tackle the unique challenges of blockchain infrastructure.
• A creative thinker who is not only skilled in programming but also in building testing and observability tools to streamline development processes.
• Someone with substantial experience in building and maintaining robust, scalable backend systems.

Does this feel like the perfect fit for you or someone else you know? Reach out to email or hop in our Discord to get in touch with a team member.

About us:

Avara builds innovative products leveraging blockchain technologies. Avara’s suite includes the Aave Protocol, along with the native stablecoin GHO, Lens, an open social network, and Family, a design-first mobile crypto wallet. Avara’s vision is to build a people-powered internet that benefits all.

Our culture:

Having cultivated a thriving, collaborative culture, our team is kind, welcoming and passionate about what we are building. We celebrate differences and seek to develop and retain the most talented people from a diverse candidate pool from all over the world. No matter where you are based, no ghost will be left behind and we appreciate every moment we get to work and have fun together.

About the role:

As a Smart Contract Security Researcher at Avara, you will play a critical role in enhancing the security and robustness of our smart contracts across our ecosystem, including Aave, GHO, and Lens. This role focuses on internal audits, vulnerability research, and developing innovative approaches to secure our protocols. Your work will directly impact the safety and trust of our products within the Web3 space.

How you can make an impact:

• Conduct thorough security audits and reviews of Avara’s internal smart contracts and protocols, identifying vulnerabilities and proposing fixes
• Perform in-depth research to enhance the security of blockchain systems, protocols, and infrastructure within our ecosystem
• Implement and evaluate formal verification techniques to ensure the correctness and safety of smart contracts
• Develop tools and frameworks to enhance the security of smart contracts and the broader ecosystem
• Develop strategies and proposals to improve the readability, usability, and security of codebases by introducing best practices
• Conduct exploratory research into emerging blockchain technologies and cryptographic protocols to preempt potential threats
• Work collaboratively with internal teams to implement and document secure coding practices
• Proactively identify trends and new vectors in blockchain security to protect our systems against new and future threats

Let’s connect if:

• Proficiency in Solidity and experience with public Ethereum or EVM-based blockchains
• Strong experience with smart contract development tools such as Foundry, Hardhat, or similar frameworks
• Experience with fuzz testing, static analysis tools, or other security-focused tooling
• Strong analytical and problem-solving skills with attention to detail
• Ability to work independently, take initiative, and deliver results with minimal supervision
• Passion for blockchain technology and the principles of decentralisation
• Previous experience performing code reviews and vulnerability assessments within web3
• Participated in web3 security competitions and audits
• Discovered vulnerabilities or bugs in any web3 projects

Haven’t quite met all the criteria? Let’s not miss out on the chance to speak. Whilst you might not meet every single requirement, you might bring other, more exciting skills to the companies!

Equal opportunity statement:

Avara celebrates diversity and view each and every team member as a separate individual with their own unique identity. No matter your race, religion, gender, ethnicity, age, (dis)ability, sexual orientation or even the wallet you use, we welcome you at Avara.

As an equal opportunities employer, we take accountability and believe in everyone’s potential to build, create and inspire changes. With a mission to build a diverse workforce, we are proud to foster a working environment in which everyone can feel safe and valued for who they are.

Come join the team as a Staff Backend Engineer at Symphony! You will be working alongside the founding team and play a crucial role in reshaping the future of DeFi.

As a Staff Backend Engineer, you will be instrumental in developing and deploying innovative solutions for secure and efficient systems. You will collaborate across teams to ensure seamless integration within our broader ecosystem and partners, and continuously drive innovation by staying at the forefront of blockchain technologies.

Qualifications

• 7+ years of backend experience
• Strong backend development with Node.js, JavaScript, DeFi systems, backend architectures, database management, and experience integrating smart contracts
• Proficiency in Javascript and Solidity
• Rust and/or AI/LLMs experience is a plus
• Full KYC process for all hires
• Competitive salary with equity
• Globally remote (Americas timezones preferred)
• A passion for shaping the future of finance

The total compensation package (base salary and equity) for this role ranges from $120K -$350K+, with additional company benefits. The pay range provided reflects individual compensation based on factors such as work location, assessed job-related skills, experience, and relevant education or training.

Join the Symphony team!

Symphony is the first agnostic execution network, designed to unify DeFi’s fragmented landscape by enabling near-instant cross-chain transactions. Symphony’s infrastructure reduces cross-chain execution time to under 3 seconds—45x faster than LayerZero and Axelar—creating a new standard for interoperability.

This is developed to address and solve liquidity fragmentation and the complex user experiences across chains, providing a seamless, unified solution for DeFi users and developers alike.Being the world’s first vertical agnostic infrastructure stack, Symphony enables anyone to execute anything across all chains and protocols without being burdened by bridges, multiple wallets, gas fees, etc. Our team is composed of former Consensys, MetaMask, Kraken, and Axelar veterans, and we’re backed by top investors.

We are looking for an innovative, passionate, and productive person who is excited about building the future of accessible crypto applications, feels comfortable challenging opinions, and most importantly who shares with us the same desire to make DeFi useable again.

• Opportunity. We believe DeFi should be fast AND accessible. You’ll do high-impact work to enhance scalability, shaping the future of crypto
• Flexibility. We are a remote-first company, and collaborate synchronously and asynchronously, via daily all-hands meetings
• Culture. As an early member of our team, you’ll have a unique opportunity to help shape our culture. We value intellectual honesty, bias towards action, and believe every member plays a key role in achieving our ambitious goals
• Compensation. We offer a competitive salary + equity + benefits package

Learn more at: symphony.io.

Symphony Labs is an equal opportunity employer. We do not discriminate on the basis of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability, genetic information, veteran status, or any other status protected by applicable laws or regulations. All employment decisions are based on qualifications, merit, and business need.

Brave is looking to hire a Computer Science PhD Intern - Systems to join their team. This is an internship position that can be done remotely anywhere in North America, Europe or the United Kingdom.

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Brave is looking to hire a Computer Science PhD Intern - Machine Learning to join their team. This is an internship position that can be done remotely anywhere in North America, Europe or the United Kingdom.

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About us:

Avara builds innovative products leveraging blockchain technologies. Avara’s suite includes the Aave Protocol, along with the native stablecoin GHO, Lens, an open social network, and Family, a design-first mobile crypto wallet. Avara’s vision is to build a people-powered internet that benefits all.

Our culture:

Having cultivated a thriving, collaborative culture, our team is kind, welcoming and passionate about what we are building. We celebrate differences and seek to develop and retain the most talented people from a diverse candidate pool from all over the world. No matter where you are based, no ghost will be left behind and we appreciate every moment we get to work and have fun together.

About the Role:

As a Principal Engineer at Avara, you will lead the design and implementation of regulated payments infrastructure. Your expertise will enable seamless money movement and high-conversion payment acceptance across Avara’s products and partner ecosystem. Together, we will build bridges, remove toll booths, and increase financial access for billions of people.

How you can make an impact:

• Oversee the end-to-end process of designing, implementing, and deploying regulated payments infrastructure
• Ask questions, uncover edge cases, and tend to our documentation
• Go fast, be agile, but also know when to slow down. As a regulated payments business, we need to take some decisions slowly in order to design for zero-defects and massive scale
• Obsess over transaction processing speed and clear communication with Customers. This is how we build trust.
• Maintain short feedback cycles through communicating priorities, failing forward, and learn as a team

Let’s connect if:

• Minimum of 3 years in a Staff or Principal Engineering role, with a strong preference for experience in Fintech and Payments
• Advanced proficiency in TypeScript, Postgres, GraphQL, Restful and distributed backend system design
• Solid grasp of transaction processing and ledgering and asynchronous risk monitoring
• Experience building mission critical, API-first, services in a production environment for enterprise-scale customers
• Thrive in a dynamic, fast-paced environment
• Driven by the opportunity to make decentralized finance the backbone of fintech and to contribute meaningfully to its practical application in the real world

Haven’t quite met all the criteria? Let’s not miss out on the chance to speak. Whilst you might not meet every single requirement, you might bring other, more exciting skills to the companies!

Equal opportunity statement:

Avara celebrates diversity and view each and every team member as a separate individual with their own unique identity. No matter your race, religion, gender, ethnicity, age, (dis)ability, sexual orientation or even the wallet you use, we welcome you at Avara.

As an equal opportunities employer, we take accountability and believe in everyone’s potential to build, create and inspire changes. With a mission to build a diverse workforce, we are proud to foster a working environment in which everyone can feel safe and valued for who they are.

Brave is looking to hire a Computer Science PhD Intern - Security/Privacy to join their team. This is an internship position that can be done remotely anywhere in North America, Europe or the United Kingdom.

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About us

Ambush is an AI company developing AI research & products that accelerate onchain adoption.

We’re building Web3’s first autonomous AI agents to simplify wealth creation & onchain safety.

We’re a lean & hyper performance-oriented team; we are competitive, we like moving fast, and we run head-first towards seemingly impossible ideas. Our entire team is crypto-native & we have a shared North Star of solving web3’s hardest challenges.

Our team is led by one of crypto’s prominent anons, Psycho.

About the role:

Have you ever referred to yourself as “terminally online”? If so, you may be a fit for this role :)

We’re hiring a highly-technical onchain generalist to help lead the company’s long term DeFi / onchain strategy as we near the release of our upcoming onchain AI agent products. You can think of this role as a highly technical product owner; contributing to hands-on development as well as the greater strategy.

The ideal candidate is an onchain generalist that has technical hands-on experience with dapps at the blockchain level while being a DeFi power user themselves.

You’ll enjoy strong autonomy & wear various hats that include:

• Leading research efforts on technical DeFi initiatives within the company
• Keeping a pulse on the latest DeFi trends to ensure our products stay ahead of the curve
• Contributing to product roadmap & strategy for our onchain products
• Working alongside our engineering team to assist with onchain technical decisions
• This role is great for those with a strong technical onchain background that get easily bored in specialized roles, as you’ll be the glue between our product, research, & engineering teams.

Requirements:

• Strong technical experience in DeFi research or leading DeFi products
• Experience using smart contract libraries such as viem or web3.js
• Strong analytical & data-focused background, including but not bound to: SQL, Dune, Python, & similar
• Good SecOps; understanding of best security practices for smart contracts & onchain dapps
• Terminally online; web3 native who keeps up with the latest onchain advancements
• Strong writer that can convert DeFi research in to digestible public-facing content
• General interest / experience with AI agents or applied AI & ML

Not required, but a strong bonus:

• Leadership experience at a research firm, venture/trading firm, or high growth web3 company
• Prior commercial experience as a smart contract dev or security auditor

Why join Ambush?

• Industry leading pay: strong base salary + uncapped profit share + equity
• Lean & high-impact team; we hate bureaucracy & will not grow past ~10 people
• One of the fastest growing AI companies in crypto
• Proven leadership team with several acquisitions under their belt

Internal full-time hires only, no contractors or agencies

About us

Ambush is an AI company developing AI research & products that accelerate onchain adoption.

We’re building Web3’s first autonomous AI agents to simplify wealth creation & onchain safety.

We’re a lean & hyper performance-oriented team; we are competitive, we like moving fast, and we run head-first towards seemingly impossible ideas. Our entire team is crypto-native & we have a shared North Star of solving web3’s hardest challenges.

Our team is led by one of crypto’s prominent anons, Psycho.

About the role:

We’re hiring a crypto-native backend engineer with proven experience building performant backends & infra for high-growth products that have achieved massive scale.

As our lead backend engineer, you will work directly alongside the CTO to help ensure that our infrastructure & backend is being built to support demanding requirements for performance, security, and scalability.

Because we are an AI company building onchain products, the ideal candidate has a strong general interest in DeFi, and uses LLMs such as GPT, Cursor, Co-pilot, or similar in their daily engineering work flow.

Requirements:

• 4+ years using Golang in production environment
• Crypto-native with prior experience building products in web3
• Experience working with AWS cloud services (e.g., SQS, SNS, RDS, Aurora, Cloud Functions, Lambda)
• Experience with microservices architectures and event-driven systems
• Experience in infrastructure as code using Terraform
• Solid understanding of PostgreSQL
• Hands-on experience with software engineering principles covering automation, testing, CI/CD pipelines, containerization, and cloud technologies
• Familiarity with monitoring and analytics tools like Grafana
• Experience in designing, developing, and maintaining scalable, resilient large-scale production applications in distributed environments

Responsibilities:

• Write well-documented APIs for cross-functional teams to consume
• Contribute to in-depth architectural decisions
• Design, develop, and maintain microservices-based systems
• Manage infrastructure using Terraform in AWS environments
• Maintain a high-quality production environment using AWS services

Not required, but a strong bonus:

• Prior commercial experience as a smart contract dev or security auditor
• Strong Python skills

Why join Ambush?

• Industry leading pay: strong base salary + uncapped profit share + equity
• Lean & high-impact team; we hate bureaucracy & will not grow past ~10 people
• One of the fastest growing AI companies in crypto
• Proven leadership team with several acquisitions under their belt

Internal full-time hires only, no contractors or agencies