Senior Core Systems Engineer

Overview Senior Core Systems Engineer - Secure Wallet Infrastructure Location: Remote - Location: US or EU (remote-first, office optional). Must be in the US, not Canada or in the European Union. France or Paris or as close as possible, always preferred. Compensation: $180K - $260K Join a stellar team of leaders and experts in blockchain technology, cryptography, infrastructure, and security to build the backbone of blockchain wallet infrastructure for the next financial era. We are hiring a Senior Core Systems Engineer to design, build, and scale the low-level systems at the heart of our platform, where performance, security, and correctness are non-negotiable. This is a high-impact role focused on turning advanced cryptography into fast, resilient, and trusted production infrastructure. Responsibilities Design, implement, and operate mission-critical security primitives: MPC signers, Hardware Security Modules (HSMs), and Trusted Execution Environments (TEEs) (e.g., AWS Nitro) Build low-level services and middleware primarily in Rust and other systems languages Architect distributed databases and stateful services for maximum performance and reliability Develop secure APIs and networking between core systems and high-level services Optimize resource usage, latency, and throughput across critical workflows Collaborate with cryptography, infrastructure, and product teams to bring new protocols into production Document core systems, share knowledge, and support client and partner discussions Requirements Experience: 8+ years of systems engineering experience with a focus on security, infrastructure, or backend development Core Language: Deep expertise in Rust, with strong low-level systems programming skills Distributed Systems: Proven experience building distributed systems, consensus mechanisms, or networks Security Hardware: Hands-on experience with HSMs, MPC (Multi-Party Computation), TEEs, and cryptographic key management Databases: Strong knowledge of SQL and NoSQL databases in high-availability environments Security Concepts: Familiarity with secure networking, applied cryptography, and defense-in-depth models Performance: Skilled in observability, debugging, and optimizing performance at scale Communication: Clear communicator, able to translate complex systems into practical solutions Benefits Title & Compensation: Senior Core Systems Engineer with a salary of $180,000-$260,000 per year (full-time) Equity: Generous stock option grant (100-200 stock options) vested over 4 years Work Model: Remote-first role, open to candidates in the US or EU (office optional) Equipment: MacBook Pro + essentials Perks: Healthcare, 401K, and coverage for travel expenses Commitment to Equality and Accessibility At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing View email address on click.appcast.io. MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd's Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting View email address on click.appcast.io. #J-18808-Ljbffr MLabs