Lead Rust Developer

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    "datePosted": "2026-04-16",
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    "description": "<p><span style=\"font-size: 12pt\"><span style=\"font-weight: bold\">📍Office</span> : Toulouse or Paris (remote work possible)</span></p>\n<p><span style=\"font-size: 12pt\"><span style=\"font-weight: bold\">⏳Length</span> : Full time contract</span></p>\n<p><span style=\"font-size: 12pt\"><span style=\"font-weight: bold\">📅Start date</span> : ASAP</span></p>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">🌍Who are we ?</span></p>\n<p><br></p>\n<p><span style=\"font-size: 12pt\">We are CYSEC, a fast-growing European information security company based in Luxembourg, Switzerland, and France.</span></p>\n<p><span style=\"font-size: 12pt\">We bring security solutions to protect sensitive information and datalinks, on Earth and in Space. We develop and offer three different innovative products securing:</span></p>\n<p><br></p>\n<p><span style=\"font-size: 12pt\"><span style=\"font-weight: bold\">🛰️ARCA SATLINK</span> <span style=\"font-weight: bold\">-</span> The space data link between the Ground Station and the Satellite </span></p>\n<p><span style=\"font-size: 12pt\"><span style=\"font-weight: bold\">📡ARCA SATCOM -</span> The satcom link providing internet connectivity to end users through satellites </span></p>\n<p><span style=\"font-size: 12pt\"><span style=\"font-weight: bold\">💻ARCA Trusted OS -</span> IT execution environments on untrusted or third party infrastructures<br></span></p>\n<p><br></p>\n<p><span style=\"font-size: 12pt\">We’re a team of engineers and software security experts, combining deep technical expertise with hands-on industry experience. Our mission is to deliver agile, cutting-edge security solutions tailored for even the most exotic infrastructures and we're always ready to tackle the toughest challenges. As a proud multinational and multilingual team, we believe that true innovation and excellence are driven by diversity and inclusion. Join us in shaping the future of cybersecurity.<br></span></p>\n<p><br></p>\n<p><span style=\"font-size: 12pt\">Find out more at: </span><a href=\"http://www.cysec.com\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-size: 12pt\">www.cysec.com</span><span style=\"font-size: 10pt\"><br></span><span style=\"font-size: 10pt\"><br></span></a></p>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">🎯Your Mission</span></p>\n<p><br></p>\n<p><span style=\"font-size: 12pt\">As a Senior Rust Developer, you will design and build high-performance software for our satellite VPN platform, from low-level protocol architecture to production deployment.</span></p>\n<p><span style=\"font-size: 12pt\">You will play a key role in optimizing network performance over real satellite links, ensuring robustness, efficiency, and security across all layers of the system. Working closely with security experts, product teams, and pre-sales, you will contribute to continuously improving ARCA SATCOM and supporting next-generation satellite communication systems.</span></p>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">🚀Key Responsibilities</span></p>\n<p><br></p>\n<ul>\n<li><span style=\"font-size: 12pt\">Design and develop high-performance systems in Rust (protocol design to production)</span></li>\n<li><span style=\"font-size: 12pt\">Optimize network performance (throughput, stability, resilience) over satellite links</span></li>\n<li><span style=\"font-size: 12pt\">Collaborate with cybersecurity experts to ensure strong cryptographic and security standards</span></li>\n<li><span style=\"font-size: 12pt\">Drive architectural improvements and contribute to product evolution</span></li>\n<li><span style=\"font-size: 12pt\">Work closely with product and pre-sales teams to align technical capabilities with user needs</span></li>\n<li><span style=\"font-size: 12pt\">Support integration and deployment of satellite communication systems</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">👩‍💼What We’re Looking For:</span></p>\n<p><br></p>\n<p><span style=\"font-size: 12pt\">To strengthen the engineering and innovation teams and to support the growth of the company, we are looking for a Senior Satcom/Network Developer to contribute to CYSEC’s effort in driving cybersecurity innovation for satellite communication</span></p>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">🎓Education:</span></p>\n<p><br></p>\n<ul>\n<li><span style=\"font-size: 12pt\">Degree in Computer Science, Electrical Engineering, or equivalent hands-on experience</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">✅Core profile:</span></p>\n<p><br></p>\n<ul>\n<li><span style=\"font-size: 12pt\">Expert-level Rust (systems programming, async with Tokio, software architecture)</span></li>\n<li><span style=\"font-size: 12pt\">Strong Linux knowledge (kernel, networking stack, TCP/IP, UDP, Netfilter)</span></li>\n<li><span style=\"font-size: 12pt\">Advanced networking expertise (congestion control, QoS, routing, VPN, QUIC, bufferbloat)</span></li>\n<li><span style=\"font-size: 12pt\">Fluent French and professional English</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">🌟Nice to have:</span></p>\n<p><br></p>\n<ul>\n<li><span style=\"font-size: 12pt\">Experience with satellite communications (link budgets, modulation)</span></li>\n<li><span style=\"font-size: 12pt\">Knowledge of cryptography and secure protocols (TLS, IPSec)</span></li>\n<li><span style=\"font-size: 12pt\">Contributions to open-source Rust projects</span></li>\n<li><span style=\"font-size: 12pt\">DevOps experience (Ansible, Terraform, GitLab CI/CD)</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">🧠Mindset</span></p>\n<p><br></p>\n<ul>\n<li><span style=\"font-size: 12pt\">Proactive and ownership-driven</span></li>\n<li><span style=\"font-size: 12pt\">Strong critical thinking and problem-solving skills</span></li>\n<li><span style=\"font-size: 12pt\">Collaborative and team-oriented</span></li>\n</ul>\n<p><br></p>\n<p><span style=\"font-size: 18pt; font-weight: bold\">🔥Why This Role Matters</span></p>\n<p><br></p>\n<p><span style=\"font-size: 12pt\">ARCA SATCOM is CYSEC’s flagship satellite communication product, combining end-to-end TLS 1.3 encryption with Split-TCP optimization to boost throughput by up to 250% over LEO and GEO satellite links. Already deployed across Europe, the Middle East, and Africa, it supports critical communications for defense, government, and commercial networks.</span></p>\n<p><span style=\"font-size: 12pt\">In this context, your role is key to ensuring the performance, reliability, and security of these deployments. You will directly contribute to solving real-world challenges in satellite connectivity, improving how secure communications operate in constrained and high-latency environments, and enabling CYSEC’s technology to scale across global infrastructures</span></p>",
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