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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.

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 Senior iOS Engineer at Avara, you will lead the development of an SDK that enables seamless fiat-to-crypto money movement and high-converting card payments 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 building and supporting an iOS SDK that will be used by some of the most demanding product teams in crypto
• Ask questions, uncover edge cases, and maintain our documentation
• Obsess over transaction processing speed and clear communication with customers – this is how we build trust
• Maintain short feedback cycles through demos

Let’s connect if:

• Minimum of 8 years in progressively more senior iOS engineering roles, with a strong preference for fintech and crypto domain experience
• Drive to make decentralized finance the backbone of fintech and contribute meaningfully to its practical application in the real world
• Advanced programming skills in Swift and UIKit, and a passion for developing phenomenal user experiences. TypeScript and React Native knowledge is a plus
• Strong background in designing consistent and convenient APIs for client adoption
• Experience building mission-critical software used by internal or external developers

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.

🚀 Whatnot

Whatnot is a livestream shopping platform and marketplace backed by Andreessen Horowitz, Y Combinator, and CapitalG. We’re building the future of ecommerce, bringing together community, shopping and entertainment. We are committed to our values, and as a remote-first team, we operate out of hubs within the US, Canada, UK, Ireland, and Germany today.

We’re innovating in the fast-paced world of live auctions in categories including sports, fashion, video games, and streetwear. The platform couples rigorous seller vetting with a focus on community to create a welcoming space for buyers and sellers to share their passions with others.

And, we’re growing. Whatnot has been the fastest growing marketplace in the US over the past two years and we’re hiring forward-thinking problem solvers across all functional areas.

💻 Role

Ads is a growing engineering team at Whatnot dedicated to building systems & features to help Sellers grow their business. As a software engineer on the ads team, the most important qualities you'll need are making sound product decisions, navigating new domains seamlessly, taking extreme ownership, and shipping high-quality products fast. We always prioritize the highest-impact features and ship them quickly. The software team has a lot of individual responsibility and many more freedoms, so we need to hire people we can trust. Your ability to put customers first, make good trade-offs, and deliver impact is essential to us.

In this role, you will…

• Build ads products by working across the full ads stack including bidding & targeting, ranking/auction, serving, campaign management, and seller tooling
• Build highly scalable ads system that handles all aspects of running an online advertising system and helps sellers differentiate themselves on Whatnot
• Understand our buyer and seller experiences and become an expert in helping them effectively scale their business through ads & monetization products

👋 You

Curious about who thrives at Whatnot? We’ve found that low ego, a growth mindset, and leaning into action and high impact goes a long way here.

As our next Software Engineer, you should have 5+ years of software engineering experience, ideally with some industry experience in one of the following areas: ads serving, quality, pricing, discovery, ranking, recommendations, and/or search engines. You should also have:

• Are capable of building scalable systems (we primarily use Python, Elixir, JavaScript)
• Have product instincts. You first think about users rather than the best technical solution
• Have built systems that scale at a high-growth company before, and can do it again with minimal guidance
• Can ship products and features lightning-fast without sacrificing quality
• Are an excellent problem solver and don’t need to be told exactly what to do
• Are comfortable working across the stack (backend and frontend)
• Have the ability to pick up on new technologies very quickly
• Have a proven track record of delivering features

💰Compensation

For Full-Time (Salary) US-based applicants: $185,000/year to $245,000/year + benefits + stock options

The salary range may be inclusive of several levels that would be applicable to the position. Final salary will be based on a number of factors including, level, relevant prior experience, skills and expertise. This range is only inclusive of base salary, not benefits (more details below) or equity in the form of stock options.

🎁 Benefits

• Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)
• Health Insurance options including Medical, Dental, Vision
• Work From Home Support
• $1,000 home office setup allowance
• $150 monthly allowance for cell phone and internet
• Care benefits
• $450 monthly allowance on food
• $500 monthly allowance for wellness
• $5,000 annual allowance towards Childcare
• $20,000 lifetime benefit for family planning, such as adoption or fertility expenses
• Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
• Parental Leave
• 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence.

💛 EOE

Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.

Apply Now:

🚀 Whatnot

Whatnot is a livestream shopping platform and marketplace backed by Andreessen Horowitz, Y Combinator, and CapitalG. We’re building the future of ecommerce, bringing together community, shopping and entertainment. We are committed to our values, and as a remote-first team, we operate out of hubs within the US, Canada, UK, Ireland, and Germany today.

We’re innovating in the fast-paced world of live auctions in categories including sports, fashion, video games, and streetwear. The platform couples rigorous seller vetting with a focus on community to create a welcoming space for buyers and sellers to share their passions with others.

And, we’re growing. Whatnot has been the fastest growing marketplace in the US over the past two years and we’re hiring forward-thinking problem solvers across all functional areas.

💻 Role

We are looking for intellectually curious, highly motivated individuals to become foundational members of our Core Machine Learning team. You will help drive the development of Whatnot’s machine learning operations and work with machine learning engineers across the company to build scalable design patterns that can be repeatedly used to achieve key business goals. Our ideal candidate has experience in spinning up ML platforms e.g. real-time model serving, approximate nearest neighbor retrieval, high-concurrency and low-latency scaling, feature stores, and model lifecycle monitoring. They are also willing and able to flex into an applied research role to develop models that leverage their own components.

What you'll do:

• Drive the development of the machine learning platform roadmap, staying abreast of emerging business needs that the machine learning platform can help address.
• Enhance our machine learning infrastructure--increase reliability, reduce latency, and continually improve the developer experience.
• Develop scalable machine learning design patterns that make it easy for machine learning scientists and engineers to safely deploy models to production.
• Improve model training, management, and monitoring
• Take a leading role in deploying ML models on business critical surfaces & flows.
• Define and advance our technical approach to scalable machine learning.
• Flex outside your comfort zone to help take on new challenges that emerge

👋 You

Curious about who thrives at Whatnot? We’ve found that low ego, a growth mindset, and leaning into action and high impact goes a long way here.

As our next Software Engineer, Machine Learning you should have 5+ years of experience, plus:

• Bachelor’s degree in Computer Science, Statistics, Mathematics, Software Engineering, a related technical field, or equivalent work experience.
• 2+ years of professional experience setting up machine learning platforms–model serving, features stores, model registries, training pipelines, etc.
• 1+ years of professional experience developing software in Python
• Software engineering experience with a track record of applying practical methods to solve real-world problems on consumer scale data.
• Ability to work autonomously and drive initiatives across multiple product areas and communicate findings with leadership and product teams.
• Experience with operational, search, and key-value databases such as PostgreSQL, DynamoDB, Elasticsearch, Redis.
• Firm grasp of visualization tools for monitoring and logging e.g. DataDog, Grafana
• Familiarity with cloud computing platforms and managed services such as AWS Sagemaker, Lambda, Kinesis, S3, EC2, EKS/ECS, Apache Kafka, Flink, Spark.
• Professionalism around collaborating in a remote working environment and well tested, reproducible work.
• Exceptional documentation and communication skills.
• Experience in applied statistical and machine learning fields e.g. Recommendations, Search, Fraud & Anomaly Detection, Experimentation and Causal Analysis preferred.

💰Compensation

For US-based applicants: $205,000 - $275,000/year + benefits + stock options

The salary range may be inclusive of several levels that would be applicable to the position. Final salary will be based on a number of factors including, level, relevant prior experience, skills and expertise. This range is only inclusive of base salary, not benefits (more details below) or equity in the form of stock options.

🎁 Benefits

• Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)
• Health Insurance options including Medical, Dental, Vision
• Work From Home Support
  • $1,000 home office setup allowance
  • $150 monthly allowance for cell phone and internet

• Care benefits
  • $450 monthly allowance on food
  • $500 monthly allowance for wellness
  • $5,000 annual allowance towards Childcare
  • $20,000 lifetime benefit for family planning, such as adoption or fertility expenses
• Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
• Parental Leave
  • 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence.

💛 EOE

Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.

Apply Now: