Senior Data Engineer, Blockchain
Status
Miami, USA
Full time
Remote
Compensation is not specified
Role
Data Engineer
Description
*
Circle is a progressive financial technology company pioneering the potential of the evolving internet of money. Facilitating seamless transfer of value akin to digital data, across the globe with unprecedented speed and cost-efficiency compared to traditional settlement structures. This innovative internet layer presents boundless opportunities in payment solutions, commerce, and market dynamics that can contribute to worldwide economic growth and inclusivity. By leveraging our infrastructure, inclusive of USDC, a blockchain-centric dollar, enterprises, institutions, and developers can leverage these advancements to seize the transformative possibilities at this pivotal juncture in currency and technology advancements.
What you will be part of:
Embracing transparency and consistency across all facets, Circle is venturing into some of the world’s most robust regulatory environments as part of our organizational expansion. Our team is fueled by swiftness and effectiveness, aligning closely with our company ethos: Multistakeholder, Mindfulness, Driven by Excellence, and High Integrity. Operating in a remote setting, Circlers continually adapt as a united front, fostering a versatile and inclusive work ambiance that promotes novel ideas and values collective contribution.
Responsibilities:
Joining the Data Engineering Blockchain team, your main focus will revolve around managing the ETL/ELT pipelines and data repository crucial for monitoring blockchain activities and trends. This analytical approach will provide insights into the movements of USDC, its whereabouts, applications, and potential future avenues.
Key Duties:
- Collaborate with business units to craft and enhance a scalable data framework that assimilates, preserves, and consolidates diverse datasets, encompassing data pipelines, platforms, warehouses, and offering data accessibility to internal and customer-related applications.
- Excel as a subject matter expert in data modeling, pipelines, data quality, and warehousing.
- Architect, construct, and nurture data ETL/ELT pipelines to aggregate essential data for analyses and reporting demands while enhancing the operations, monitoring, and efficiency of the data repository.
- Establish integrations with third-party systems to obtain, qualify, and integrate various datasets.
- Facilitate data analytics tools for harvesting valuable insights supporting data-led decision-making.
- Foster collaboration with multiple units including product, engineering, data science, and external collaborators for data structuring, overseeing the data lifecycle, data governance, and adherence to regulatory and legal guidelines.
Requirements:
Senior Data Engineer (III):
- Prowess in 4+ years of professional data engineering.
- Proficiency in one or more programming languages (Java, Scala, Python).
- Advanced skills in SQL within big data warehouse ecosystems like Snowflake, BigQuery, Databricks, etc.
- Familiarity with SQL and NoSQL databases such as MySQL, PostgreSQL, Cassandra, HBase, Redis, DynamoDB, Neo4j.
- Proficiency in workflow management engines like Airflow, Dagster, DBT.
- Experience with Cloud Services (AWS, Google Cloud, Microsoft Azure).
- Capability in crafting scalable infrastructure to support batch, micro-batch, or stream data processing for extensive data volumes.
- Exposure to financial or compliance data, with a plus in similar domains such as payment systems, credit cards, etc.
- Proficiency in data provenance and governance.
- Familiarity with open-source or correlated big data technologies.
- Ability to tackle intricate and unclear problems.
- Self-driven individual with ownership mentality, delivering results at a rapid pace.
- Excellent communication skills, enabling effective collaboration with distributed teams and proficient idea-sharing.
Additional Details:
This role is eligible for immediate PERM sponsorship for qualified candidates.
Circle is dedicated to creating an inclusive financial landscape as honesty remains at our foundation. We take various factors into account while determining compensation ranges and total packages.
Initiating pay scale is influenced by multiple factors, like experience, skill set, credentials, and other organizational demands. Note that compensation ranges may vary based on candidates' locations.
Base Pay Range: $147,500 - $195,000
Annual Bonus Target: 12.5%
Also Included: Equity & Benefits (medical, dental, vision, 401(k)). Circle adheres to a flexible vacation policy, providing 10 days of sick leave annually and 11 paid holidays in the U.S.
Equal Opportunity Employer: Circle stands as an inclusive employer valuing diversity. We uphold non-discrimination principles based on race, religion, nationality, gender, sexual orientation, age, marital status, veteran status, or disability. Furthermore, Circle engages in the E-Verify Program in select locations as mandated by law.
#LI-Remote
Skills Required
Circle
Website
www.circle.comCompany size
Not specified
Location
United States
Description
Not specified
Status
Common Knowledge Base Association (CKBA)
Developer Relations Coordinator
Full time
Remote
The Nervos Community Catalyst (NCC) is an organisation supported by the Common Knowledge Base Association (CKBA). It aims to strengthen productivity in the CKB community through a range of initiatives. Its work focuses primarily on developers, but may also support other productive activities, such as content creation and community activism.
For further information, see the NCC website and announcement post.
Job Description
The Developer Relations Coordinator (DevRel Coordinator) oversees, tracks and coordinates developers participating in the CKBuilders and Build on CKB programmes. The DevRel Coordinator is the main point of contact for new builders working through CKB and Fiber documentation, helping them find relevant resources and connecting them with DevRel or other technical contributors when needed.
The DevRel Coordinator also maintains close relationships with developers participating in NCC programmes and helps coordinate communication and support between these builders and CKB developer teams. The role also involves highlighting selected developer contributions to the wider community through social media.
The DevRel Coordinator is a full-time contractor and reports to the NCC Director through regular meetings.
Key Responsibilities
Track and engage with active CKBuilders, CKBuilder alumni and Build on CKB members, maintaining regular communication and following up on project progress and support needs.
Redesign and maintain the CKBuilder project tracker.
Improve the visibility and presentation of developer activity across NCC programmes.
Act as the first point of contact for developers with questions, directing them to appropriate resources or connecting them with DevRel and other technical contributors when needed.
Provide constructive feedback on developer ideas and projects within the scope of the role.
Develop developer engagement strategies on CKBoost and design campaigns where appropriate.
Review weekly reports submitted by CKBuilders and follow up on progress or issues where needed.
Showcase developer activity through social media posts.
Contribute strategic input on NCC's positioning.
Optional Additional Responsibilities
The following responsibilities may be added for higher remuneration:
Represent NCC at regional CKBuilder events, where feasible.
Manage developer payroll.
Person Specification
Essential
Strong written communication skills.
Professional approach.
Proactive work ethic.
Strong organisational skills.
Ability to respond to queries within a reasonable timeframe.
Background in computer science.
A sound technical understanding of blockchain and CKB.
Highly Desirable
Bilingual in English and Chinese.
Familiarity with the CKB ecosystem, documentation, tooling and development teams.
Experience working with developers or coordinating technical projects and contributors.
Ability to solve problems and design solutions where needed.
Understanding of the crypto industry and wider technology and market trends.
Experience using AI tools.
Desirable
Ability to work asynchronously.
For further information, see the NCC website and announcement post.
Job Description
The Developer Relations Coordinator (DevRel Coordinator) oversees, tracks and coordinates developers participating in the CKBuilders and Build on CKB programmes. The DevRel Coordinator is the main point of contact for new builders working through CKB and Fiber documentation, helping them find relevant resources and connecting them with DevRel or other technical contributors when needed.
The DevRel Coordinator also maintains close relationships with developers participating in NCC programmes and helps coordinate communication and support between these builders and CKB developer teams. The role also involves highlighting selected developer contributions to the wider community through social media.
The DevRel Coordinator is a full-time contractor and reports to the NCC Director through regular meetings.
Key Responsibilities
Track and engage with active CKBuilders, CKBuilder alumni and Build on CKB members, maintaining regular communication and following up on project progress and support needs.
Redesign and maintain the CKBuilder project tracker.
Improve the visibility and presentation of developer activity across NCC programmes.
Act as the first point of contact for developers with questions, directing them to appropriate resources or connecting them with DevRel and other technical contributors when needed.
Provide constructive feedback on developer ideas and projects within the scope of the role.
Develop developer engagement strategies on CKBoost and design campaigns where appropriate.
Review weekly reports submitted by CKBuilders and follow up on progress or issues where needed.
Showcase developer activity through social media posts.
Contribute strategic input on NCC's positioning.
Optional Additional Responsibilities
The following responsibilities may be added for higher remuneration:
Represent NCC at regional CKBuilder events, where feasible.
Manage developer payroll.
Person Specification
Essential
Strong written communication skills.
Professional approach.
Proactive work ethic.
Strong organisational skills.
Ability to respond to queries within a reasonable timeframe.
Background in computer science.
A sound technical understanding of blockchain and CKB.
Highly Desirable
Bilingual in English and Chinese.
Familiarity with the CKB ecosystem, documentation, tooling and development teams.
Experience working with developers or coordinating technical projects and contributors.
Ability to solve problems and design solutions where needed.
Understanding of the crypto industry and wider technology and market trends.
Experience using AI tools.
Desirable
Ability to work asynchronously.
Payment in Crypto
SADR B
Founding Technical Partners for Oferli – Elite Web & Mobile Development Team🌐
Remote, USA
Remote, USA
Part time
Remote
I am Sadr, CEO of Oferli. We are building a high-performance, elite technical team, and I am looking for 5 to 10 dedicated founding technical partners to join me in this mission.
The Vision:
Oferli is a 100% decentralized ecosystem. While we are rooted in Web3, our expertise spans across professional web and mobile application development. We are not just another agency; we are crafting the next generation of digital solutions. Our goal is to set a new standard for excellence, transparency, and decentralization.
What I am looking for:
I am building a professional, senior-level "Elite Team." I am looking for partners who are truly passionate about the vision—not just short-term gains. By combining our individual expertise and portfolios, we will establish Oferli’s collective professional reputation.
Requirements:
Proven Expertise: You must be a senior-level professional. Please provide your portfolio showcasing your best work in web and mobile development.
Commitment: This is a founding partnership. We are looking for those who believe in the mission and are ready to tackle complex challenges together.
Professionalism: We operate with high standards. Communication and efficiency are key.
How We Work:
Collaboration: We use professional, secure channels for all communications. Qualified candidates will be contacted via email to be invited to our private workspace on Notion to align on our roadmap and launch our upcoming projects.
Decentralized Operations: We leverage Web3 tools for collaboration and compensation, maintaining a fully decentralized environment.
Growth: We are launching with a core team of at least 5 founding partners, scaling to 10, to deliver high-impact results for our clients.
Application Process:
If you are a senior professional ready to build a world-class, decentralized ecosystem, apply here on LaborX. Qualified candidates will be contacted via email for further professional vetting and onboarding.
Let’s build the future, together.
Sadr B
CEO, Oferli
The Vision:
Oferli is a 100% decentralized ecosystem. While we are rooted in Web3, our expertise spans across professional web and mobile application development. We are not just another agency; we are crafting the next generation of digital solutions. Our goal is to set a new standard for excellence, transparency, and decentralization.
What I am looking for:
I am building a professional, senior-level "Elite Team." I am looking for partners who are truly passionate about the vision—not just short-term gains. By combining our individual expertise and portfolios, we will establish Oferli’s collective professional reputation.
Requirements:
Proven Expertise: You must be a senior-level professional. Please provide your portfolio showcasing your best work in web and mobile development.
Commitment: This is a founding partnership. We are looking for those who believe in the mission and are ready to tackle complex challenges together.
Professionalism: We operate with high standards. Communication and efficiency are key.
How We Work:
Collaboration: We use professional, secure channels for all communications. Qualified candidates will be contacted via email to be invited to our private workspace on Notion to align on our roadmap and launch our upcoming projects.
Decentralized Operations: We leverage Web3 tools for collaboration and compensation, maintaining a fully decentralized environment.
Growth: We are launching with a core team of at least 5 founding partners, scaling to 10, to deliver high-impact results for our clients.
Application Process:
If you are a senior professional ready to build a world-class, decentralized ecosystem, apply here on LaborX. Qualified candidates will be contacted via email for further professional vetting and onboarding.
Let’s build the future, together.
Sadr B
CEO, Oferli
Payment in Crypto
Marcus Lindberg
Senior Blockchain Engineer - Low-Latency Execution Infrastructure (HyperEVM / Hyperliquid)
Full time
Remote
we’re looking for a senior blockchain engineer to build low-latency execution infrastructure around hyperevm and hyperliquid-related trading systems.
this is not a frontend or dapp role. the focus is on real-time execution systems, chain-native infrastructure, and market-aware backend engineering where latency, ordering, and state correctness directly impact execution outcomes.
you will work on systems that operate under noisy, adversarial, and highly dynamic conditions, including delayed or missing websocket events, rpc inconsistencies, transaction lifecycle complexity, state desynchronization, retries, and recovery logic.
core responsibilities include building and maintaining realtime blockchain data pipelines, websocket and rpc streaming systems, execution orchestration layers, liquidity-aware routing logic, transaction lifecycle management, and integration with orderbook and market data systems.
we are specifically looking for engineers who think in systems rather than features. meaning understanding how data flows through pipelines, how state evolves over time, how failures propagate, and how to design systems that recover automatically without manual intervention.
areas of work include:
- realtime blockchain data ingestion
- mempool-aware execution flows
- transaction lifecycle handling
- execution sequencing and routing
- websocket and rpc infrastructure
- state synchronization systems
- liquidity and orderbook integration
- performance and latency optimization
you should be comfortable working with distributed systems, asynchronous event processing, and latency-sensitive backend architectures.
strong experience in one or more of the following areas is highly relevant:
- exchange infrastructure
- trading systems
- execution engines
- blockchain indexers
- realtime event systems
- arbitrage systems
- rpc/node infrastructure
- defi backend systems
- low-latency backend engineering
preferred technical stack:
- typescript / node.js
- go
- rust
- python
- postgres
- clickhouse
- redis
- kafka or similar messaging systems
- docker
- linux environments
- evm rpc internals
- websocket infrastructure
ecosystem familiarity:
- ethereum, arbitrum, base, optimism, bsc
- hyperliquid / hyperevm
- foundry
- ethers.js / viem
- geth / erigon / nethermind
- dex and amm mechanics
- liquidity math, slippage, gas strategy, routing logic
this role is not suitable for:
- frontend-only developers
- nft or basic dapp experience only
- tutorial-level web3 developers
- candidates without production systems experience
we value engineers who have built real systems where correctness, latency, and reliability matter under load. we care less about buzzwords and more about concrete systems you have personally built and operated.
ideal candidates can clearly explain:
- system architecture decisions
- bottlenecks and tradeoffs
- failure modes and recovery strategies
- latency considerations in real systems
- production debugging experience
working style:
- remote
- async-first
- low bureaucracy
- high ownership
- engineering-driven team
- direct technical communication
we strongly prefer practical engineering depth over polished presentation. if you have built or worked on systems involving realtime data, trading infrastructure, blockchain execution, or latency-sensitive backend systems, please include details of those systems when applying.
Payment in Crypto
Tommy Gunno
Full-time Hackintosh iOS development
Full time
Hybrid
We are currently seeking a skilled professional to join our team as a Full-time Hackintosh iOS Developer. In this role, you will be responsible for developing iOS applications for our Hackintosh platform. The ideal candidate will have a strong background in Web, Mobile, and Software Development, Engineering & Architecture, Customer Service, and Accounting and Consulting Specialist.
Responsibilities:
- Designing, developing, and implementing iOS applications for our Hackintosh platform
- Collaborating with cross-functional teams to define, design, and ship new features
- Troubleshooting application bugs and implementing solutions
- Ensuring the performance, quality, and responsiveness of applications
- Staying up-to-date with the latest industry trends and technologies
- Providing technical support and guidance to users as needed
Requirements:
- Proven work experience as an iOS Developer or similar role
- Proficient in Objective-C, Swift, and Xcode
- Strong understanding of iOS development best practices
- Excellent problem-solving skills
- Ability to work independently and as part of a team
- Strong communication and interpersonal skills
- Knowledge in web, mobile, and software development, engineering & architecture, customer service, and accounting and consulting specialist
If you are passionate about iOS development and eager to work on innovative projects in the Hackintosh space, we'd love to hear from you. Please apply with your resume and portfolio to be considered for this exciting opportunity.
Responsibilities:
- Designing, developing, and implementing iOS applications for our Hackintosh platform
- Collaborating with cross-functional teams to define, design, and ship new features
- Troubleshooting application bugs and implementing solutions
- Ensuring the performance, quality, and responsiveness of applications
- Staying up-to-date with the latest industry trends and technologies
- Providing technical support and guidance to users as needed
Requirements:
- Proven work experience as an iOS Developer or similar role
- Proficient in Objective-C, Swift, and Xcode
- Strong understanding of iOS development best practices
- Excellent problem-solving skills
- Ability to work independently and as part of a team
- Strong communication and interpersonal skills
- Knowledge in web, mobile, and software development, engineering & architecture, customer service, and accounting and consulting specialist
If you are passionate about iOS development and eager to work on innovative projects in the Hackintosh space, we'd love to hear from you. Please apply with your resume and portfolio to be considered for this exciting opportunity.
Payment in Crypto
CleanSpark
Commercial Operations Associate
Full time
Remote
Job Overview
CleanSpark is seeking a Commercial Operations Associate to support their AI data center projects by overseeing procurement, contract administration, and financial analysis. In this role, you will report to the Senior Manager, Commercial Operations and play a key part in evaluating vendor proposals, analyzing budget discrepancies, addressing commercial issues, and providing recommendations to ensure successful project delivery.
Key Responsibilities
Conduct detailed analysis of project budgets, forecasts, and expenditures, and suggest actions to handle variances.
Evaluate vendor proposals and select suppliers based on factors like cost, terms, timely delivery, and risk assessment.
Engage in negotiations to finalize commercial terms, obtaining necessary approvals.
Review contracts, change orders, and manage commercial risks and vendor-related matters.
Address and resolve any non-routine procurement, invoice, or payment discrepancies as they arise.
Enforce commercial policies and financial controls, escalating issues if necessary, and work towards process improvements.
Develop reports outlining trends, risks, and strategic actions to enhance commercial operations.
Maintain precise records and project data in company systems, ensuring accuracy and completeness.
Collaborate with legal and business partners for contract agreements, vendor onboarding, and approvals.
Work closely with project teams and vendors to handle commercial challenges and support project execution effectively.
Facilitate audits and compliance reviews, offering recommendations for corrective actions.
Undertake other responsibilities as delegated.
The successful candidate for this role will possess professionalism, effective communication skills, and the ability to collaborate well within a team-oriented and inclusive environment.
Required Qualifications
Bachelor's degree in relevant fields like business, finance, construction management, or operations, or equivalent experience.
Two or more years of hands-on experience in commercial operations, procurement, financial analysis, or contract management.
Ability to assess commercial issues independently and provide sound business recommendations.
Proficient in budget analysis, vendor proposal evaluation, and commercial terms review.
Strong judgment in policy application, problem resolution, and understanding of approval processes.
Proficiency in Microsoft Office tools and experience with project or financial systems.
Solid analytical, organizational, and communication skills.
Willingness to travel occasionally based on business requirements.
Preferred Qualifications
Experience in data centers, engineering, construction, energy, or similar capital-intensive industries.
Exposure to vendor negotiations, commercial risk management, change orders, or procurement processes.
This position offers a salary range of $85,000 to $95,000 per year and may involve responsibilities requiring the use of a company vehicle or travel between job sites. Candidates must meet CleanSpark's vehicle insurance policy requirements.
CleanSpark is an Equal Opportunity Employer, providing a discrimination-free workplace. All aspects of employment, including recruitment, promotions, termination, and training, are governed by this policy. AI tools may be utilized in parts of the hiring process.
CleanSpark is seeking a Commercial Operations Associate to support their AI data center projects by overseeing procurement, contract administration, and financial analysis. In this role, you will report to the Senior Manager, Commercial Operations and play a key part in evaluating vendor proposals, analyzing budget discrepancies, addressing commercial issues, and providing recommendations to ensure successful project delivery.
Key Responsibilities
Conduct detailed analysis of project budgets, forecasts, and expenditures, and suggest actions to handle variances.
Evaluate vendor proposals and select suppliers based on factors like cost, terms, timely delivery, and risk assessment.
Engage in negotiations to finalize commercial terms, obtaining necessary approvals.
Review contracts, change orders, and manage commercial risks and vendor-related matters.
Address and resolve any non-routine procurement, invoice, or payment discrepancies as they arise.
Enforce commercial policies and financial controls, escalating issues if necessary, and work towards process improvements.
Develop reports outlining trends, risks, and strategic actions to enhance commercial operations.
Maintain precise records and project data in company systems, ensuring accuracy and completeness.
Collaborate with legal and business partners for contract agreements, vendor onboarding, and approvals.
Work closely with project teams and vendors to handle commercial challenges and support project execution effectively.
Facilitate audits and compliance reviews, offering recommendations for corrective actions.
Undertake other responsibilities as delegated.
The successful candidate for this role will possess professionalism, effective communication skills, and the ability to collaborate well within a team-oriented and inclusive environment.
Required Qualifications
Bachelor's degree in relevant fields like business, finance, construction management, or operations, or equivalent experience.
Two or more years of hands-on experience in commercial operations, procurement, financial analysis, or contract management.
Ability to assess commercial issues independently and provide sound business recommendations.
Proficient in budget analysis, vendor proposal evaluation, and commercial terms review.
Strong judgment in policy application, problem resolution, and understanding of approval processes.
Proficiency in Microsoft Office tools and experience with project or financial systems.
Solid analytical, organizational, and communication skills.
Willingness to travel occasionally based on business requirements.
Preferred Qualifications
Experience in data centers, engineering, construction, energy, or similar capital-intensive industries.
Exposure to vendor negotiations, commercial risk management, change orders, or procurement processes.
This position offers a salary range of $85,000 to $95,000 per year and may involve responsibilities requiring the use of a company vehicle or travel between job sites. Candidates must meet CleanSpark's vehicle insurance policy requirements.
CleanSpark is an Equal Opportunity Employer, providing a discrimination-free workplace. All aspects of employment, including recruitment, promotions, termination, and training, are governed by this policy. AI tools may be utilized in parts of the hiring process.