Protocol Engineer
We are envisioning the future of high-performance distributed systems revolving around Solana at Jito Labs. Our team has developed Jito-Solana, a leading MEV Solana client, and the Jito Block Engine, which has transformed block building on the Solana network. Jito-Solana currently powers 88% of stake and 1,100 validators, generating an additional $370M in revenue for network stakers and validators.
At Jito Labs, you will collaborate with a small, agile group of engineers and operators dedicated to tackling complex technical challenges at the forefront of Solana trading and infrastructure. As a profitable company with a well-received product, we possess the ability to address ambitious technical hurdles while maintaining a startup's agility. Our team culture highlights:
Ownership: Every team member plays a significant role in shaping technical decisions and guiding our product roadmap.
Execution: We prioritize speedy delivery and iterate based on real-world feedback, emphasizing progress over mere activity.
Excellence: We tackle intricate problems with sophisticated, scalable solutions.
Growth: Our solid financial standing and market fit allow us to focus on long-term outcomes.
If you are enthusiastic about:
Resolving intricate distributed systems challenges
Engaging with advanced MEV and trading infrastructure
Contributing to open-source blockchain technology
Driving measurable enhancements on one of the fastest-growing L1 blockchains
…then we look forward to your application.
We are not simply creating tools but designing the future of high-performance distributed systems. Our efforts directly influence the Solana ecosystem, paving the way for a quicker network, enhanced capital efficiency, and more resilient DeFi applications for millions of users.
We provide competitive compensation, notable equity, and the chance to work on significant problems. Instead of just observing the blockchain future unfold, join us in shaping it.
About the Position:
Jito Labs is in search of a Protocol Engineer to spearhead the advancement of decentralized finance on Solana. We are on the lookout for inventive and driven engineers who excel at handling problems with vast design spaces and crafting simple and ingenious solutions. This role is dynamic, ideal for low-level problem-solvers to flourish.
Responsibilities
Design Solana programs utilizing Solana native and Anchor programming models
Develop secure, efficient, and reliable code
Create public-facing test plans and documentation for the code developed
Establish substantial testing infrastructure to verify adherence to specifications
Collaborate with the team and customers to leverage internal tools and knowledge
Lead features and products from inception to completion with a strong sense of ownership
Effectively address performance bottlenecks and troubleshoot issues across the entire stack
Qualifications
5+ years of systems programming experience in Rust, C, or C++
Experience developing multiple Solana programs in Solana native programming or utilizing the Anchor framework
Strong communication and collaboration skills
Ability to simplify complex problems into straightforward solutions
Prior experience at a startup with fewer than 50 employees
Nice to-Have
Background in security
Understanding of the DeFi landscape
Salary range: $150,000 - $200,000 annually
Competitive compensation and various equity options
All expenses paid for team retreats and conferences
Unlimited PTO
Weekly meal vouchers
Founding Technical Partners for Oferli – Elite Web & Mobile Development Team🌐
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
Senior Blockchain Engineer (Cosmos SDK & IBC)
Expectations:
Design custom modules (x/staking, x/rewards, x/merkl)
Implement IBC light clients and relayers
Optimize block time and state pruning
Write comprehensive unit & integration tests (Go test)
Build CLI tools for validators and delegators
Monitor node health and network upgrades
Collaborate with the research team on MEV-resistant ordering
Maintain chain upgrades (v1 → v2) with migration scripts
Write technical documentation for external validators
Nice to have:
Experience with Avalanche Subnets or Polkadot Substrate
Knowledge of HSM and key management
Open-source contributions to Cosmos SDK or related repos
Chinese+English language proficiency
Smart Contract Engineer (Solidity / Rust)
Expectations:
Design and deploy upgradeable proxy contracts (UUPS)
Write high-assurance tests with invariant testing (Foundry)
Implement access control (Ownable2Step, roles)
Integrate with Chainlink Automation and CCIP
Write Natspec docs and deployment scripts
Participate in internal security reviews and bug bounties
Optimize storage layouts to reduce gas costs by >15%
Collaborate with the research team on novel staking mechanisms
Nice to have:
Experience with LayerZero or Hyperlane
Published audit reports or contest wins (Code4rena / Sherlock)
Knowledge of ZK-proofs (basic)
Chinese language proficiency
Senior Blockchain Engineer - Low-Latency Execution Infrastructure (HyperEVM / Hyperliquid)
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.
Full-time Hackintosh iOS development
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.