Senior Rust Blockchain Engineer
Who We Are:
Our mission is to enhance decentralized networks by reducing costs associated with zero-knowledge proofs. Horizen Labs, established in 2019, aims to create a more secure digital environment within the decentralization wave. We prioritize advancing blockchain technology through cost-effective proof verification methods while maintaining security. With a focus on developing cutting-edge, module-driven architecture integrated with composable zero-knowledge proofs, we continuously set higher standards for efficiency, security, and cost-effectiveness. At Horizen Labs, our team members are our most valuable assets. We foster a culture that empowers individuals to bring their unique ideas to life, and we are seeking innovative minds to join our dedicated team in the blockchain space. Experience the excitement of being part of a rapidly growing company at the forefront of innovation. Embracing diversity drives the innovation needed to create exceptional products. Operating with a globally distributed workforce in collaboration with satellite offices in New York City, NY, and Milan, Italy, enables us to tap into diverse talent pools. Are you ready to be a part of revolutionizing the future with leading-edge blockchain technology? Join us!
We are in search of a skilled Senior Rust Blockchain Engineer to join our team. As a Senior Rust Blockchain Engineer, you will drive the design, implementation, and optimization of blockchain protocols and systems. Your role involves contributing to the development of innovative blockchain solutions and ensuring the reliability and scalability of our blockchain infrastructure. Our international team thrives in a dynamic and innovative environment, leveraging technical expertise to pioneer cutting-edge blockchain solutions. Join our motivated team of technical experts who value open communication, pragmatism, and ownership as we collectively solve complex challenges in software engineering, system design, cryptography, and computing. Ideal candidates will possess extensive hands-on experience and expertise in Rust related to blockchain technology, particularly centered on Substrate. If you have the talent and determination to address critical issues with inventive solutions, consider this an opportunity to lead ground-breaking technology advancements and make a meaningful impact in the crypto and blockchain community.
What You’ll Own:
- Make foundational design decisions for core blockchain infrastructure components.
- Lead the development, testing, and optimization processes for these components to ensure performance, reliability, security, and scalability.
- Take technical ownership of novel systems, identifying opportunities for innovative research and development.
- Play a significant role in shaping the company's future, actively participating in strategic decision-making and observing the immediate impact of your contributions.
- Engage in conferences and explore opportunities within the on-chain ecosystem.
Skills and Qualifications:
- A degree in Computer Science or related field, or equivalent practical experience.
- Over 5 years of hands-on Software Development experience using Rust.
- Previous work experience on a layer-one (L1) blockchain network.
- Proficiency in common design patterns and a strong focus on software architecture design.
- Passion for writing secure, fast, well-documented, and tested code.
- Experience in technical writing and documentation.
- Strong English language skills with excellent written and verbal communication abilities.
- Enjoy mentoring junior developers and sharing knowledge.
- Collaborative team player able to work across engineering, marketing, and support functions to deliver top-notch solutions.
- Autonomous, self-driven, and ego-conscious.
Preferred Qualifications:
- Theoretical and practical background in using Rust and/or Substrate for constructing L1 blockchains / relay chains / parachains.
- Theoretical and practical knowledge of blockchain-based systems (dApps, rollups, etc.), with specific focus on Ethereum and/or other EVM-based solutions.
- Understanding of Zero Knowledge Cryptography, general Cryptography, and their application in blockchain technology.
In compliance with New York City's Pay Transparency Act, the annual base salary range for this position if based in NYC is USD 170,000 to USD 195,000.
Horizen Labs is an equal opportunity employer.
Horizen Labs is dedicated to providing reasonable accommodations for individuals with disabilities. If you require accommodations during any stage of the employment process, please contact recruiting@horizenlabs.io.
Business Development (Vietnam)
Senior DevRel Engineer
In this role, you will work closely with developers who integrate our smart contracts, APIs, and protocols. Your mission is to make complex systems understandable, integrations smooth, and feedback actionable for the core engineering team.
Responsibilities
• Support developers integrating our protocols and APIs
• Create clear technical content such as guides, examples, demos, and reference implementations
• Act as a technical bridge between the developer community and internal product and engineering teams
• Identify recurring integration issues and help improve tooling and documentation
• Represent the protocol in technical discussions, workshops, hackathons, and conferences
• Collaborate with ecosystem partners such as wallets, DeFi apps, and infrastructure providers
Qualifications
• Practical experience with Solidity and smart contract interaction
• Strong understanding of DeFi concepts and Ethereum based systems
• Ability to explain complex technical topics in a clear and structured way
• Experience working with developers or technical communities
• Comfort reading and reasoning about production smart contracts, security considerations, and gas efficiency
Why You’ll Love Working With Us
• Join a young, creative team in a fast-paced and supportive environment
• We’re open to new ideas if you’ve got a vision, pitch it and make it happen
• Enjoy competitive pay that matches your skills and experience
• Be part of a company that’s shaping the future of DeFi
• Take time when you need it we offer unlimited vacation days
• Get fully compensated for your work gear we’ll set you up for success
• Travel with us! We host an annual team retreat at a top international location
Hiring Process
• Test assignment: a practical exercise relevant to the role
• Technical interview: to discuss your solution, skills, and problem-solving
• HR interview: to talk about culture fit, expectations, and the role
Why this role matters
You will directly shape how developers experience the protocol. Your work will influence adoption, integration quality, and long term ecosystem growth by making powerful technology accessible and reliable for others to build on.
You don’t need to meet every requirement to apply - don’t worry. We value potential, motivation, and willingness to learn just as much as experience.
If this role excites you, we’d love to hear from you.
🚀 Hiring Solana Developers – Pump.fun
Hi,
I’m reaching out from Valiant Solution LLC. We’re currently working with a U.S.-based client who is an experienced crypto professional and we’re looking for a skilled Solana developer to help build a platform similar to Pump.fun.
We already have a basic codebase from GitHub that the developer can start from, so the project will mainly involve customizing, improving, and completing the functionality rather than building everything from scratch.
Key requirements:
• Experience with Solana smart contracts (Rust / Anchor)
• Knowledge of token launch mechanics and bonding curves
• Experience with Solana Web3 integrations
• Ability to work with an existing codebase and extend it
If this sounds interesting, please reply with:
• Your Solana development experience
• Links to relevant projects or GitHub
• Your availability for a quick discussion
Looking forward to connecting.
Best regards,
Valiant Solution LLC
Web3 Fullstack Developer
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.
Growth Marketing Lead (User & Volume Growth Focus)
This is not a traditional community manager role. We’re looking for someone with a proven track record of onboarding users, increasing engagement, and directly contributing to product adoption and transaction/activity volume.
What You’ll Own
Develop and execute user growth strategy end-to-end
Drive measurable increases in active users and platform volume
Build acquisition funnels (organic + partnership-driven)
Optimize onboarding flows and activation metrics
Lead social presence across Twitter/X and other platforms
Represent the project in Twitter Spaces and relevant community events
Launch and manage growth campaigns, incentives, and referral programs
Track and report on growth KPIs (CAC, activation rate, retention, volume impact)
Must-Have Experience
Proven track record of growing users and/or trading/activity volume in a startup, Web3, fintech, or SaaS environment
Demonstrated ability to turn social presence into measurable growth
Experience hosting or speaking in Twitter Spaces and similar forums
Strong understanding of growth funnels, activation metrics, and retention loops
Data-driven mindset (comfortable with analytics tools and experimentation)
Bonus Points
Experience in crypto, trading platforms, or financial products
Experience designing referral or incentive systems
Existing relevant audience/network
What We Care About
We don’t care about vanity metrics (likes, impressions).
We care about:
Active users
Retention
Conversion
Volume growth
Sustainable acquisition loops
If you’ve scaled a product before and can show real numbers behind your impact, we want to talk.