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Swiss Nexus is recruiting on behalf of a technology company building payment infrastructure for digital assets.
The company is developing products that make onchain transactions more intuitive, secure and accessible for users, developers and businesses. Its infrastructure enables users to complete blockchain-based payments and other onchain actions using assets held across self-custodial wallets, centralized exchanges and fiat on-ramps.
The team is now hiring a Protocol Engineer to help develop the foundations of its Web3 payments infrastructure.
The Role
This is a high-impact engineering position at the intersection of smart contracts, cross-chain protocols, DeFi and payment settlement.
You will design and implement secure onchain systems capable of supporting payment activity across multiple blockchain networks. You will work closely with backend engineers and product stakeholders to translate commercial requirements into reliable protocol architecture.
The position is particularly suited to a crypto-native engineer who is comfortable owning protocol design, implementation, testing and production reliability.
What You’ll Do
- Design, develop and deploy secure smart contracts and protocol components across multiple blockchain platforms.
- Architect onchain payment and settlement infrastructure in collaboration with backend and product teams.
- Translate product and business requirements into robust protocol designs.
- Write efficient, well-tested smart contract code.
- Participate in internal and external security reviews.
- Research and assess new blockchain networks, DeFi primitives and interoperability protocols.
- Support incident response, debugging and remediation of onchain issues.
- Contribute to technical decisions affecting protocol security, scalability and reliability.
What We’re Looking For
- Proven experience building and deploying production smart contracts on major blockchain platforms, including Ethereum and L2 networks.
- Strong hands-on expertise with Solidity.
- Experience with Rust or Move is advantageous.
- A solid understanding of DeFi protocols, token standards and cross-chain communication patterns.
- A strong security mindset, including knowledge of common smart contract vulnerabilities and defensive engineering practices.
- The ability to collaborate effectively with backend engineers and product stakeholders.
- Confidence owning protocol work from initial design through production deployment and ongoing support.
Nice to Have
- A deep understanding of blockchain architecture, consensus mechanisms and applied cryptography.
- Production experience across multiple L1 and L2 ecosystems, including non-EVM networks.
- Familiarity with bridges, oracles and interoperability frameworks.
- Experience with formal verification or advanced contract-testing tools such as Foundry or Echidna.
- Contributions to open-source blockchain projects or protocol research.
- Previous experience building blockchain-based payment or settlement infrastructure.
About Swiss Nexus
Swiss Nexus is a specialist recruitment firm connecting engineering, product and leadership talent with companies operating across blockchain, Web3 and fintech
How do I get a job at DeFi?
Getting a job in the DeFi (decentralized finance) industry can be a competitive process, but there are a few steps you can take to increase your chances of finding a job in this field:
- Build up your skills and knowledge: To work in DeFi, you'll likely need to have a strong understanding of blockchain technology, as well as other related technologies such as smart contracts and cryptocurrency. Consider taking online courses or earning a degree in a relevant field to build up your skills and knowledge.
- Network with industry professionals: Attend meetups and conferences related to DeFi and make connections with professionals in the industry. Networking can be a valuable way to learn about job openings and get your foot in the door at a DeFi company.
- Create a strong online presence: Many DeFi companies will look at your online presence (such as your LinkedIn profile and personal website) when considering you for a job. Make sure to showcase your skills and accomplishments online and keep your profile up to date.
- Apply for relevant job openings: Keep an eye out for job openings at DeFi companies and apply for positions that align with your skills and experience. Apply for DeFi Jobs without Experience. Tailor your resume and cover letter to the specific job you're applying for and highlight any relevant experience or skills you have.
- Consider internships or volunteer work: DeFi Internships or volunteer work can be a great way to get your foot in the door and gain valuable experience in the DeFi industry. Many companies also offer internships to students, so consider applying for an internship if you're still in school.
- Be persistent: keep trying if you don't get a job right away. It can take time to find the right opportunity, but with the right skills and determination, you can land a job in the DeFi industry.