Hiring Senior Systems Engineer (Postfix, rspamd, Vault, AEAD) to build ISP-level message filtering prototyp

$750-1500 AUD

Fechado

Publicado há 3 meses

$750-1500 AUD

Pago na entrega

Hiring: Senior Systems Engineer — Build ISP-Level Email Filtering Prototype (Postfix, rspamd, Vault, AEAD) Remote • Contract (4–6 weeks) • Equity available We are building the first working prototype of [login to view URL], an ISP-level scam/spam/malware prevention system that moves message filtering away from user devices and into the provider network. A patent is filed, and now we need an expert engineer to assemble the prototype using commercial off-the-shelf components. What You Will Build A fully operational ISP-style email pipeline demonstrating: SMTP ingress (Postfix or Exim) Filtering (rspamd + ClamAV) Malicious quarantine inside ISP AEAD envelope encryption (AES-GCM or ChaCha20-Poly1305) Session key wrapping using Hashicorp Vault Provider-signed provenance headers (PVD) Remote attestation gate (mock version OK: challenge-response) Client decryptor app (Python/Go/Rust) Transparency log (append-only, hash-chained) Full technical pack, diagrams, repository layout, and MVP plan provided. Required Skills You must have strong experience in: Postfix or Exim (mandatory) Email filtering (rspamd, SpamAssassin, ClamAV) Linux system administration Email transport internals (MTA/LDA) Encryption basics (AEAD, key wrapping) Hashicorp Vault or KMS equivalents Python, Go, or Rust for pipeline glue Nice to Have DNSSEC / TLSA HSM experience ISP or carrier background eBPF / DPDK Post-quantum crypto familiarity Deliverables Running ISP-level filtering prototype Quarantine engine Encryption pipeline PVD header injection Key-unwrap attestation gate Client decryptor Transparency ledger Demo scripts Documentation + GitHub repo Engagement Details Contract: 4–6 weeks Fully remote Competitive compensation Equity available for exceptional long-term engineer Immediate start To Apply Please send: Your experience with Postfix/Exim Examples of relevant projects Your approach to the build Availability Preferred compensation (fixed/hourly) [login to view URL]

Cisco

Encryption

Linux

Network Administration

Postfix

Rust

System Admin

System Administration

ID do Projeto: 39981481

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Ativo há 2 meses

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7 freelancers estão ofertando em média $1.218 AUD for esse trabalho

@ZohaibRoy

⭐⭐⭐⭐⭐ Build ISP-Level Email Filtering Prototype with Expertise ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and see you're looking for a Senior Systems Engineer to build an ISP-level email filtering prototype. You need not look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects in email systems. I will utilize my expertise to create a robust email pipeline using Postfix, rspamd, and other components within your budget. ➡️ Why Me? I can easily build your email filtering prototype as I have 5 years of experience in email systems, including Postfix, rspamd, and Linux administration. My strong skills in encryption and programming languages like Python and Go will ensure a comprehensive solution tailored to your needs. ➡️ Let's have a quick chat to discuss your project in detail. I'll show you samples of my previous work, demonstrating my expertise in building effective email solutions. I look forward to our conversation! ➡️ Skills & Experience: ✅ Postfix ✅ Exim ✅ rspamd ✅ ClamAV ✅ Linux Administration ✅ Email Transport Internals ✅ AEAD Encryption ✅ Hashicorp Vault ✅ Python ✅ Go ✅ Rust ✅ Transparency Logs Waiting for your response! Best Regards, Zohaib

$900 AUD em 2 dias

5,0

(7 avaliações)

5,0

@annes01

This sounds like something I’d genuinely enjoy building. Developing a fully operational ISP-level email filtering prototype that moves message filtering into the provider network is an exciting challenge. With my extensive experience in Postfix and rspamd, I can create a streamlined and integrated solution that effectively addresses scam, spam, and malware prevention while ensuring a cohesive user experience. I have a proven track record of delivering practical, measurable results in complex systems. Happy to outline how I would turn this plan into a working solution. Chat soon, Anne S

$1.050 AUD em 7 dias