Senior TypeScript Engineer - Web3js (CET/EST)
Status
Full time
Remote
Compensation is not specified
Role
Frontend Engineer
Description
Building the infrastructure for Web3
ChainSafe is a multi-chain research and development firm specializing in protocol engineering, security audits, cross-chain interoperability and web3 gaming.
Our goal is to advance blockchain technology through open-source innovation, making it more accessible, secure, and sustainable. Since our establishment in 2017, our efforts have consistently pushed the boundaries of what's achievable in the blockchain sector.
ChainSafe has worked on maintaining stable alternative implementations, enhancing functionality, and driving adoption of top protocols like Ethereum, Filecoin, and Polkadot - playing a role in creating and securing over 230 Billion USD in combined value measured by market capitalization of these protocols.
To learn more about ChainSafe, you can look at our GitHub profile.
Here’s what you might want to know before reading on:
- We are at the forefront of blockchain innovation, having initiated significant projects such as spinning up the Goerli network in 2018 and leading the migration of Ethereum to Proof of Work.
- We advocate for public goods as all our work is open-source and widely recognized in the Web3 research community.
- We work with more than 10 blockchain ecosystems and Secure more than $1Bn of transaction volume.
- We lead ecosystem projects like Web3.js, Lodestar, Forest, and Gossamer.
- We are a global, remote-friendly organization that is open to working with contractors.
At ChainSafe, you will be part of a team distributed across 35+ countries, focused on contributing to advancing humanity through open-source and decentralized technology. Joining us provides a unique opportunity for a computer scientist to work with the only company offering cutting-edge open-source innovation across various domains within the blockchain industry. We develop 3 protocol clients, a gaming SDK for unity, a multi-chain bridge, run thousands of nodes for Lido Finance, and collaborate with innovative Web3 startups.
Who we need:
Web3js.org was created by one of the co-founders of Ethereum. We are seeking a passionate and proactive Senior TypeScript Developer who shares our commitment to building open-source software and driving blockchain into mainstream adoption. You will collaborate across multiple Ethereum-focused projects and contribute to your team's success through high-quality code. In your role, you will be the core maintainer of the oldest Web3 library, impacting millions of Ethereum developers.
Responsibilities:
- Actively participate in discussions and contribute to enhancing Web3js.
- Review, audit, and test teammate's code while addressing bugs reported by the community.
- Provide feedback on design decisions and develop compliant, optimized code based on protocol specifications.
- Stay updated with the latest Ethereum Improvement Proposals (EIPs).
Required skills and experience:
- Strong experience in TypeScript programming language (over 5 years).
- Proficiency in debugging, code reviewing, and software development life cycle.
- Hands-on experience in open-source projects.
- Knowledge of best practices, design patterns, and software development principles.
Nice to have:
- Experience in distributed systems, peer-to-peer systems, network programming, or cryptography.
- Experience in maintaining large mono repo codebases and setting up CI/CD pipelines.
- Familiarity with testing frameworks and web bundlers.
- Experience with Ethereum or EVM-compatible blockchains.
- Understanding and application of semver versioning.
Tell us who you are: If you believe you are a suitable fit for this role, please apply, even if you do not fully meet all the requirements. Your previous projects and notable commits are of interest to us.
Hiring Steps:
- Screening call with one of our tech recruiters.
- Technical assignment for debugging evaluation.
- Interview with Web3js project manager.
- Final Technical Interview.
Why Join ChainSafe:
Founded by developers, we are a remote-first company with a global team. We provide opportunities for personal and professional growth, emphasize autonomy, have a results-driven environment, and offer flexible work hours. We value diversity and inclusivity in our team and encourage individuals from underrepresented groups in the tech space to apply.
How to Apply:
Please fill out the Greenhouse application form and ensure that you attach your resume and link your GitHub/Gitlab profile or any software projects you have contributed to.
Skills Required
Chainsafesystems
Website
Not specified
Company size
Not specified
Location
United States
Description
Not specified
Status
Peeter Luik
Software Developer
Part time
Remote
I’m actively looking for a native Russian speaker who can expertly conduct or participate in job interviews—especially those requiring strong communication, technical understanding, and professional presence. This person should feel at ease discussing software engineering, or related topics, while also being able to assess a candidate’s clarity, depth, and overall fit. If you’re a fluent Russian speaker with the confidence and experience to shine in a technical interview setting, I’d be excited to connect and explore the opportunity with you.
Payment in Crypto
Gabenius
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
Nahclimited
Software Engineer
Hong Kong
Hong Kong
Full time
Office
Our client is a prominent developer of body motion video games for their proprietary device, and they are presently in search of a Software Engineer to lead the design and implementation of high-performance systems that govern sensing, detection, and inference for cutting-edge interactive products.
You will be responsible for setting the technical direction of fundamental platform layers that are integral to real-time multimodal systems.
Responsibilities:
Create efficient, cross-platform software frameworks supporting detection, sensing, haptics, and ML inference.
Design effective runtime execution systems and hardware abstraction layers to ensure low latency and high reliability.
Develop developer-friendly APIs for leveraging core platform capabilities.
Optimize camera, microphone, and haptics pipelines for seamless support of multimodal data streams.
Work with real-time data to ensure the frameworks run smoothly on diverse hardware configurations.
Requirements:
Minimum of 3 years' experience in building frameworks, performance-centric applications, or cross-platform systems.
Proficiency in C++/C#, along with proficiency in at least one other systems language such as Java, Rust, or Go.
Demonstrated experience in real-time systems development and optimizing code for high performance.
Experience in hardware abstraction and creating APIs for consumption by other engineering teams.
Preferred Qualifications:
Background in computer vision, embedded systems, signal processing, low-latency software, or CI/CD infrastructure for high-performance codebases.
You will be responsible for setting the technical direction of fundamental platform layers that are integral to real-time multimodal systems.
Responsibilities:
Create efficient, cross-platform software frameworks supporting detection, sensing, haptics, and ML inference.
Design effective runtime execution systems and hardware abstraction layers to ensure low latency and high reliability.
Develop developer-friendly APIs for leveraging core platform capabilities.
Optimize camera, microphone, and haptics pipelines for seamless support of multimodal data streams.
Work with real-time data to ensure the frameworks run smoothly on diverse hardware configurations.
Requirements:
Minimum of 3 years' experience in building frameworks, performance-centric applications, or cross-platform systems.
Proficiency in C++/C#, along with proficiency in at least one other systems language such as Java, Rust, or Go.
Demonstrated experience in real-time systems development and optimizing code for high performance.
Experience in hardware abstraction and creating APIs for consumption by other engineering teams.
Preferred Qualifications:
Background in computer vision, embedded systems, signal processing, low-latency software, or CI/CD infrastructure for high-performance codebases.
animocabrandslimited@laborx.com animocabrandslimited@laborx.com
Full Stack Engineer (Web3 focused)
Hong Kong
Hong Kong
Full time
Office
Animoca Brands Corporation Limited is a pioneering company in the Web3 space, utilizing tokenization and blockchain technology to bring digital property rights to consumers and contribute to the development of the open metaverse. Their mission is executed through three core business areas: operating Web3 ventures such as Moca Network, Anichess, The Sandbox, Open Campus, NEOM Web3 initiatives, and a regulated stablecoin project; offering digital asset advisory services like tokenomics consultancy and liquidity provision; and managing investments in over 540 companies, including top industry players.
We are seeking a talented Full Stack Engineer to join our team dedicated to shaping a decentralized future. In this role, you will play a crucial part in building innovative applications that connect traditional web experiences with blockchain technology seamlessly.
As a Full Stack Engineer, you will be responsible for developing decentralized applications (dApps) across the entire Animoca Brands ecosystem. This involves creating user-friendly interfaces, designing robust backend services, and ensuring strong integration with the EVM ecosystem.
Responsibilities
Web3 Integration: Design and implement scalable frontend interfaces that interact smoothly with blockchain technology utilizing libraries like Ethers.js, Viem, or Web3.js.
Backend Architecture: Develop and maintain high-performing APIs and microservices (Node.js/TypeScript) to support our range of games and platforms.
Security Focus: Implement and uphold stringent security standards across the tech stack to mitigate common Web3 vulnerabilities.
EVM Expertise: Dive deep into the EVM ecosystem, managing transaction processes, gas optimizations, and interactions with various Layer 2 solutions.
Collaboration: Work closely with product managers, UI/UX designers, and smart contract engineers to translate complex blockchain concepts into user-friendly products.
Qualifications
Blockchain Proficiency: Thorough understanding of EVM functionality, including providers, signers, transaction broadcasting, and blockchain data indexing.
Full-Stack Security: Experience securing Web3 applications, familiarity with OWASP Top 10, and security patterns for decentralized interfaces.
Modern Frontend Skills: Proficiency in React.js or Next.js and TypeScript for building performant state-driven applications.
Robust Backend Knowledge: Strong background in Node.js and relational or NoSQL databases.
Preferred Qualifications
Smart Contract Development: Hands-on experience in writing, testing, and deploying Solidity contracts via tools like Hardhat or Foundry.
DeFi/NFT Awareness: Knowledge of ERC-20, ERC-721, and ERC-1155 standards.
Infrastructure Expertise: Familiarity with Docker, Kubernetes, or cloud services like AWS.
Why Join Animoca Brands?
Diverse and Inclusive Workplace: Thrive in a vibrant, multi-cultural setting with colleagues from various backgrounds.
Web3 Incentives: Grow alongside innovative projects and play a significant role in the future.
Direct Impact and Open Structure: Your input matters; our flat organizational structure ensures rapid idea implementation.
Comfortable Environment: Enjoy a relaxed and productive work atmosphere with a casual dress code.
Cross-Project Opportunities: Collaborate with subsidiary brands across the network, gaining exposure to diverse projects and technologies.
Comprehensive Benefits: Benefit from a range of comprehensive packages including medical, life, and transportation allowances.
We are seeking a talented Full Stack Engineer to join our team dedicated to shaping a decentralized future. In this role, you will play a crucial part in building innovative applications that connect traditional web experiences with blockchain technology seamlessly.
As a Full Stack Engineer, you will be responsible for developing decentralized applications (dApps) across the entire Animoca Brands ecosystem. This involves creating user-friendly interfaces, designing robust backend services, and ensuring strong integration with the EVM ecosystem.
Responsibilities
Web3 Integration: Design and implement scalable frontend interfaces that interact smoothly with blockchain technology utilizing libraries like Ethers.js, Viem, or Web3.js.
Backend Architecture: Develop and maintain high-performing APIs and microservices (Node.js/TypeScript) to support our range of games and platforms.
Security Focus: Implement and uphold stringent security standards across the tech stack to mitigate common Web3 vulnerabilities.
EVM Expertise: Dive deep into the EVM ecosystem, managing transaction processes, gas optimizations, and interactions with various Layer 2 solutions.
Collaboration: Work closely with product managers, UI/UX designers, and smart contract engineers to translate complex blockchain concepts into user-friendly products.
Qualifications
Blockchain Proficiency: Thorough understanding of EVM functionality, including providers, signers, transaction broadcasting, and blockchain data indexing.
Full-Stack Security: Experience securing Web3 applications, familiarity with OWASP Top 10, and security patterns for decentralized interfaces.
Modern Frontend Skills: Proficiency in React.js or Next.js and TypeScript for building performant state-driven applications.
Robust Backend Knowledge: Strong background in Node.js and relational or NoSQL databases.
Preferred Qualifications
Smart Contract Development: Hands-on experience in writing, testing, and deploying Solidity contracts via tools like Hardhat or Foundry.
DeFi/NFT Awareness: Knowledge of ERC-20, ERC-721, and ERC-1155 standards.
Infrastructure Expertise: Familiarity with Docker, Kubernetes, or cloud services like AWS.
Why Join Animoca Brands?
Diverse and Inclusive Workplace: Thrive in a vibrant, multi-cultural setting with colleagues from various backgrounds.
Web3 Incentives: Grow alongside innovative projects and play a significant role in the future.
Direct Impact and Open Structure: Your input matters; our flat organizational structure ensures rapid idea implementation.
Comfortable Environment: Enjoy a relaxed and productive work atmosphere with a casual dress code.
Cross-Project Opportunities: Collaborate with subsidiary brands across the network, gaining exposure to diverse projects and technologies.
Comprehensive Benefits: Benefit from a range of comprehensive packages including medical, life, and transportation allowances.
Jitolabs
Senior Systems Engineer - Performance
USA
USA
Full time
Remote
Company Overview
Jito Labs specializes in creating cutting-edge high-performance distributed systems on the Solana platform. Our team is renowned for developing Jito-Solana, a premier MEV Solana client, and the groundbreaking Jito Block Engine, which has significantly improved block building on Solana, resulting in approximately 4.5 million SOL rewards for validators and stakers in the last year.
We are excited to introduce BAM, our latest product that aims to redefine Solana's market structure and transaction supply chain by prioritizing performance, reliability, and transaction privacy.
Why Choose Jito
High ownership: Take the lead in making crucial technical decisions and shaping product direction.
Fast execution: Embrace rapid shipping and iterative improvements based on real-world feedback.
Technical excellence: Tackle complex challenges with elegant solutions.
Sustainability: Our strong financial position allows us to focus on long-term impact rather than runway concerns.
Position Overview
We are currently looking for an experienced Senior Systems Engineer to join our core team. In this role, you will play a pivotal part in constructing crucial, cutting-edge infrastructure for the Solana ecosystem. You will have the opportunity to explore uncharted technical territories and devise innovative solutions across various aspects of our stack.
Systems & Infrastructure Engineering
Design and maintain high-performance Linux systems for transaction processing and block building.
Utilize virtualization and isolation technologies (KVM, QEMU, TEEs).
Debug and enhance the interaction between user-space systems and the Linux kernel.
Analyze CPU performance, memory management, I/O operations, and scheduling under real-world workloads.
Performance Engineering
Develop high-performance systems for processing and analyzing on-chain data.
Optimize critical pathways within our infrastructure and Solana core (Agave & Firedancer) to reduce latency and boost throughput.
Create new tools for monitoring and enhancing network efficiency.
Enhance system reliability through thoughtful design, observability, and fault isolation.
Contribute performance enhancements upstream (Solana / OS / QEMU components).
Requirements
Minimum 5 years of systems-level programming in C, C++, or Rust with proficiency in Rust.
Extensive experience in Linux systems engineering and performance-critical infrastructure.
In-depth knowledge of profiling and tracing tools such as perf, flamegraphs, and eBPF.
Experience in debugging network performance using tools like tcpdump, Wireshark, and packet capture analysis.
Familiarity with CPU microarchitecture considerations including cache behavior, branch prediction, and NUMA.
Demonstrated ability to delve into complex systems to identify and resolve issues accurately.
Strong communication skills.
Strongly Preferred
Experience in HFT, market-making, or ultra-low-latency trading systems.
Background in virtualization, hypervisors, TEE development.
Prior work involving the kernel or embedded systems.
Familiarity with Solana or blockchain infrastructure.
SALARY: $200,000 - $230,000 per year (Salary offered will be based on experience)
Additional Benefits:
Competitive compensation with multiple forms of equity.
100% employer-paid health benefits.
All-expenses-paid team retreats and conference opportunities.
Weekly meal voucher.
Jito Labs specializes in creating cutting-edge high-performance distributed systems on the Solana platform. Our team is renowned for developing Jito-Solana, a premier MEV Solana client, and the groundbreaking Jito Block Engine, which has significantly improved block building on Solana, resulting in approximately 4.5 million SOL rewards for validators and stakers in the last year.
We are excited to introduce BAM, our latest product that aims to redefine Solana's market structure and transaction supply chain by prioritizing performance, reliability, and transaction privacy.
Why Choose Jito
High ownership: Take the lead in making crucial technical decisions and shaping product direction.
Fast execution: Embrace rapid shipping and iterative improvements based on real-world feedback.
Technical excellence: Tackle complex challenges with elegant solutions.
Sustainability: Our strong financial position allows us to focus on long-term impact rather than runway concerns.
Position Overview
We are currently looking for an experienced Senior Systems Engineer to join our core team. In this role, you will play a pivotal part in constructing crucial, cutting-edge infrastructure for the Solana ecosystem. You will have the opportunity to explore uncharted technical territories and devise innovative solutions across various aspects of our stack.
Systems & Infrastructure Engineering
Design and maintain high-performance Linux systems for transaction processing and block building.
Utilize virtualization and isolation technologies (KVM, QEMU, TEEs).
Debug and enhance the interaction between user-space systems and the Linux kernel.
Analyze CPU performance, memory management, I/O operations, and scheduling under real-world workloads.
Performance Engineering
Develop high-performance systems for processing and analyzing on-chain data.
Optimize critical pathways within our infrastructure and Solana core (Agave & Firedancer) to reduce latency and boost throughput.
Create new tools for monitoring and enhancing network efficiency.
Enhance system reliability through thoughtful design, observability, and fault isolation.
Contribute performance enhancements upstream (Solana / OS / QEMU components).
Requirements
Minimum 5 years of systems-level programming in C, C++, or Rust with proficiency in Rust.
Extensive experience in Linux systems engineering and performance-critical infrastructure.
In-depth knowledge of profiling and tracing tools such as perf, flamegraphs, and eBPF.
Experience in debugging network performance using tools like tcpdump, Wireshark, and packet capture analysis.
Familiarity with CPU microarchitecture considerations including cache behavior, branch prediction, and NUMA.
Demonstrated ability to delve into complex systems to identify and resolve issues accurately.
Strong communication skills.
Strongly Preferred
Experience in HFT, market-making, or ultra-low-latency trading systems.
Background in virtualization, hypervisors, TEE development.
Prior work involving the kernel or embedded systems.
Familiarity with Solana or blockchain infrastructure.
SALARY: $200,000 - $230,000 per year (Salary offered will be based on experience)
Additional Benefits:
Competitive compensation with multiple forms of equity.
100% employer-paid health benefits.
All-expenses-paid team retreats and conference opportunities.
Weekly meal voucher.