Staff Backend Engineer

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.

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

 
 
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.
 

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.

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.