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Principal Security Engineer

posted by: spj_bot

Location: Remote - US or EU

Remote | Full-time

Compensation: $160K - $240K

Our client operates a core banking platform designed specifically for digital assets, enabling fintechs and systemically important financial institutions to build, operate, and scale onchain infrastructure. The platform secures over €100B in assets and powers critical operations—including key management, transaction processing, treasury, and compliance—for over 400 global institutions.

Our client is seeking a Principal Security Engineer to lead product security across the entire ecosystem. In this role, security is built directly into the system's architecture rather than applied as a secondary control. The ideal candidate will take ownership of hardening key management, signing workflows, authentication systems, policy enforcement, and multi-chain integrations.

Beyond core product security and vulnerability management, this position plays a pivotal role in shaping the long-term architectural vision of a platform trusted by tier-one financial institutions. As an organization committed to technical excellence, our client also encourages contribution to the broader security community through research, publications, and industry events.

Key Responsibilities

Job Skills

layers professional key management secure patterns threat modeling communication policy enforcement cryptographic protocol security engineering work environment banking operations supply chain professional development supply chain security architectural design problem solving management system authorization root cause analysis security community security security policy threat models security sensitive research mitigation nist cybersecurity framework problem solve computing platform communicate developer environments vulnerability management cloud computing financial institution stage track incident response leadership operates new product designed specifically environment security authentication protocol treasury networking protocols distributed networking protocols managing security distributed networks managed securely digital asset workflows layered blockchain investigate initial screening think leadership external representation chain integrations security engineer infrastructure security critical thinking operate version control security research distributed systems defense in depth transaction processing backend security control enforce rust platform trusted long term presentations workflows systems development budget external auditor audit hardening infrastructure as code security architecture infrastructure embedded scale typescript applicable data audits core product
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Senior Web3 Software Engineer

posted by: spj_bot

Senior Web3 Software Engineer

Location: Europe/US/Latam

Remote | Full-time

Compensation: $170K - $195K

Our client is a pioneer in the blockchain sector, developing a high-performance operating system designed to redefine scalability and throughput for Ethereum. By combining parallel transaction execution with advanced state minimization, our client’s platform overcomes traditional protocol limitations to provide a groundbreaking environment for decentralized development.

Since its initial launch in 2019, the organization has remained dedicated to enhancing Ethereum's ecosystem through technical innovation, including the creation of a bespoke virtual machine and a specialized programming language. The team is a globally dispersed group of innovators committed to shaping the future of blockchain technology through secure, decentralized, and high-throughput solutions.

Our client is seeking a Senior Web3 Software Engineer to lead the development of high-performance decentralized applications (dapps). This individual will own major product surfaces end-to-end—from frontend interfaces to on-chain integrations—collaborating across product, design, and smart contract teams to deliver secure and intuitive experiences for traders and users.

Key Responsibilities

Job Skills

professional collaborating key management operating system reads writes api design high performance manager graph finance software engineering best practices ethereum guards node real time react e event listening audited candlestick chart software engineer manage solidity security policy performance tuning mitigation bridging libraries phishing product design virtual machine API technical debt design systems abstraction integrations leadership mentorship high throughput integration innovators design build strategic decisions vue throughput programming language managed securely collaboration deep dive blockchain innovation innovative graphql redux chain integrations interaction integrated next js architecture security javascript system design data management indexers code review calculators translate interoperability literacy data sources scalability user flow indexer infrastructure typescript applicable data execute
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Lead/Senior Front End Engineer

posted by: spj_bot

Lead/Senior Front-End Engineer (DeFi Infrastructure on Solana)

Location: Remote - PST-CAT preference

Compensation: Competitive

We are building the next generation of Decentralized Finance (DeFi) liquidity infrastructure on Solana. Our platform solves major industry problems by moving beyond traditional over-collateralized lending. We enable under-collateralized borrowing, programmable margin accounts, and composable strategies, all through one seamless application, unlocking capital efficiency and reducing risk.

We are seeking a foundational hire, a Lead/Senior Front-End Engineer, to own and drive the frontend of our flagship platform. This role will shape the entire user experience, technical architecture, and future frontend engineering culture.

As the go-to person for all things frontend, you will be responsible for defining the technical vision and delivering a world-class, high-performance user experience for advanced DeFi users.

Job Skills

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