Crypto wallet security infrastructure provider

Senior Core Systems Engineer at Crypto wallet security infrastructure provider

Compensation

$180,000 – $260,000/yr

Setup: Remote, Hybrid
Location: Paris, Île-de-France
Type: Full-time
Level: Senior
Posted: Feb 13, 2026

Description

This is a remote position for a Senior Core Systems Engineer at a crypto wallet security infrastructure provider. The role involves designing, building, and scaling the company's platform, focusing on distributed services, cloud, hardware, and blockchain environments. Key responsibilities include developing MPC, HSMs, TEEs, and middleware, collaborating with various teams to integrate advanced cryptography into production-ready infrastructure, and ensuring high-performance, secure, and correct financial application workflows.

Required Skills

Systems Engineering
Security
Infrastructure
Backend
Rust
Low-Level Systems Programming
Distributed Systems
Consensus Mechanisms
Networks
HSMs
MPC
TEE
Cryptographic Key Management
SQL
NoSQL Databases
High-Availability Environments
Secure Networking
Applied Cryptography
Defense-in-Depth Models
Observability
Debugging
Optimizing Performance At Scale

Additional Information

Required Previous Experiences: 8+ years of systems engineering experience with focus on security, infra, or backend.
Deep expertise in Rust, with strong low-level systems programming skills.
Proven experience building distributed systems, consensus mechanisms, or networks.
Hands-on experience with HSMs, MPC, TEEs, and cryptographic key management.
Strong knowledge of SQL and NoSQL databases in high-availability environments.
Familiarity with secure networking, applied cryptography, and defense-in-depth models.
Skilled in observability, debugging, and optimizing performance at scale.
Preferred Qualifications: Clear communicator, able to translate complex systems into practical solutions.