Senior Backend Engineer Rust
- Toronto, ON
- Hybrid
- Posted Sep 24, 2026
- 1 position
$130,000–$145,000 / year
Applications are currently unavailable for this posting.
Browse current jobs- Employment type
- Full-time
- Experience level
- Senior
- Posting language
- English
- Office presence
- 3 days per week
- Application method
- Apply on LinkedIn (LinkedIn sign-in required)
Job summary
You will take ownership of core backend infrastructure and work directly with technical leadership to build identity solutions for AI agents. The role involves hands-on architecture and heavy coding within a small, high-ownership engineering team.
Job details
I’m working with an early-stage cybersecurity company building infrastructure to solve one of the biggest challenges emerging from the rise of AI agents: identity and security at scale. They’re looking for a Senior Rust Engineer who can hit the ground running and take ownership of core backend infrastructure. This is a hands-on IC role focused on architecture + heavy coding, working directly with the technical leadership team. What they need: Strong production Rust experience HSM / hardware security integration Experience integrating with HSMs or other hardware security devices is essential. Rust experience here is a major plus. L4/L7 middleware or reverse proxy development You should have personally built middleware or a reverse proxy that intercepts and processes network traffic. Security / cryptography experience Experience with certificate authorities, certificate lifecycle, key generation, encryption, PKI, or broader cybersecurity is highly valuable. The role: • Senior IC — architecture + hands-on engineering • Work directly with the founders / technical leadership • Small engineering team with high ownership • Build core identity infrastructure for AI agents • Potential to grow into broader technical leadership over time • Oakville / GTA — ~3 days in office
What you’ll do
You will take ownership of core backend infrastructure and work directly with technical leadership to build identity solutions for AI agents. The role involves hands-on architecture and heavy coding within a small, high-ownership engineering team.
Requirements
Candidates must have strong production Rust experience and expertise in HSM or hardware security integration. You are also required to have experience building middleware or reverse proxies and a solid background in cybersecurity or cryptography.
Listed skills
- Rust · Preferred
Other relevant skills
Identified from the job description. Confirm important requirements above.
- Rust
- Cybersecurity
- HSM
- Hardware security
- Middleware
- Reverse proxy
- Network traffic processing
- Cryptography
- Certificate authorities
- Certificate lifecycle
- Key generation
- Encryption
- PKI
- Backend infrastructure
- Architecture
Job areas
- Software
- Technology
- Security & Safety
- Engineering