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Added 23 mins ago
Storage GPFS
KTek Resourcing
Montreal, QC
Contract
Storage Site Reliability Engineer (GPFS / Storage Ops)
Added 24 mins ago
Security Engineer (17-Month Contract)
Varicent
Toronto, ON
Varicent is looking for a hands-on Security Engineer to join our Information Security team on a 17-month contract and help strengthen the security of our systems, applications, and cloud…
Added 24 mins ago
Agentic AI Lead Engineer - Vice President
Citi
Mississauga, ON
Full-time
…translate complex enterprise workflows into intelligent, automated systems that deliver measurable business impact across Citi's global…
Added 38 mins ago
Security Engineer (17-Month Contract)
Varicent
Toronto, ON
Contract
Varicent is looking for a hands-on Security Engineer to join our Information Security team on a 17-month contract and help strengthen the security of our systems, applications, and cloud…
Added 38 mins ago
Program Chief Engineer – Spacecraft Satellite Systems (35863)
Myticas Consulting
Canada
Full-time
Program Chief Engineer – Spacecraft / Satellite Systems
Added 38 mins ago
Technical Consultant III (35732)
Myticas Consulting
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Full-time
Technical Consultant III (Software Engineer, Senior/Lead)
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Senior Geotechnical Engineer - Mining
Stantec
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Stantec is seeking a Senior Geotechnical Engineer to join our Energy and Resources business group within Western Canada. This position will work collaboratively with other Stantec offices…
Added 1 hour ago
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Agnico Eagle Mines Limited
Rankin Inlet, NU
Full-time
Participate in the maintenance and optimization of surface infrastructure systems, including (but not limited to): fuel distribution, fire suppression, heat recovery, compressed air, water…
Added 1 hour ago
Senior Mechanical Engineer, Data Centers
AECOM
Markham, ON
$125,000 to $175,000 CAD / year
Full-time
Design resilient, redundant and fault-tolerant systems for continuous operations.
Added 1 hour ago
Senior Electrical Engineer, Data Centers
AECOM
Markham, ON
$125,000 to $175,000 CAD / year
Full-time
…helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for…
Added 1 hour ago
Senior Cloud DevOps Engineer
Robertson & Company Ltd.
Ottawa, ON
Contract
Our client is a top financial institution with significant North American holdings. They have operations across most major verticals, including institutional & corporate, wealth management,…
Added 2 hours ago
System Engineer
MCAP
Cambridge, ON · Greater Kitchener-Cambridge-Waterloo Metropolitan Area
Full-time
This position is responsible for the design, deployment, management, and security of storage and compute infrastructure for MCAP. This includes the planning, management and monitoring of…
Added 2 hours ago
Structural - Senior Concrete Design Engineer
Hatch
Mississauga, ON
…globe. With expertise in sustainable studies, asset building and operations, and industry-leading efficiencies, our best-in-class team leverages methodologies, governance and systems that…
Added 2 hours ago
Senior Structural Engineer
Hatch
Sudbury, ON
…globe. With expertise in sustainable studies, asset building and operations, and industry-leading efficiencies, our best-in-class team leverages methodologies, governance and systems that…
Added 2 hours ago
Senior Architecte IA/ML | Senior AI/ML Architect, Services professionnels pour le secteur public | Public Sector Professional Services
Amazon
Montreal, QC
…solutions ML et/ou GenAI, déployer les solutions validées sur l'infrastructure sous-jacente et assurer la formation des équipes…
Added 2 hours ago
Senior Full-Stack Software Engineer - AI-Native Engineering, Java & React
Kaseya
Toronto, ON
Full-time
…engineering, product, sales, marketing, customer support, or operations, your work helps protect, defend, and optimize IT environments across the…
Added 2 hours ago
Data Center Engineer
Insight Global
Boisbriand, QC
$29.65 to $30 CAD / hour
Contract
Work closely with operations and infrastructure experts around the world.
Added 3 hours ago
Business Development Manager, Enterprise Wireless & Network Services
ArcLinx Technology
Vancouver, BC
$100,000 to $120,000 CAD / year
Full-time
ArcLinx Technology designs, deploys, and manages enterprise Wi-Fi and network infrastructure for Canada's most demanding environments: hospitals, airports, stadiums, campuses, hotels, and…
Added 3 hours ago
Winter Maintenance Operator
AtkinsRéalis
Dow Settlement, NB
Part-time
…connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants,…
Added 3 hours ago
Winter Maintenance Operator
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Dow Settlement, NB
Part-time
…connect people, data and technology to transform the world's'infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants,…
Added 3 hours ago
Electrical Engineer P.Eng.
The JNE Group of Companies
Hamilton, ON
$63,000 to $101,000 CAD / year
Full-time
Work on diverse projects including manufacturing facilities, metals and mining operations, energy infrastructure, industrial processing plants, and brownfield retrofit projects.
Added 4 hours ago
Senior Full-Stack Software Engineer - AI-Native Engineering, Java & React
Kaseya Careers
Toronto, ON
…engineering, product, sales, marketing, customer support, or operations, your work helps protect, defend, and optimize IT environments across the…
Added 5 hours ago
Engineering Director , Nuclear
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Lead technical and organizational interfaces among the owner, architect-engineer, reactor technology provider, constructors, suppliers, utilities, operations, and other project partners.
Added 5 hours ago
Embedded Electrical Engineer
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Toronto, ON
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…hardware, debug the fault nobody else can find, and ship electronic systems you can stand behind. Ready to do that for a company whose technology helps keep critical energy infrastructure…
Added 5 hours ago
Field Support Engineer - Screening Business Line
Metso
Burlington, ON · Montreal, QC
Our solutions and services support everything from renewable energy and electrification to the infrastructure and digital economy shaping our future. Together, we help our customers meet…

BlueCat

Staff Software Engineer

Toronto, ON, Canada
Greater Toronto Area, Canada, Canada

Pay: $160,000 - $190,000 a year
Job type: Full-time
Apply by: Oct 30, 2026
Posting language: English
Posted: Sep 30, 2026

Apply About employer

Applications open in a new tab.

Original job description

We're BlueCat - a Great Place to Work for good reason. Our team solves critical network challenges for some of the world's largest organizations. In simple terms, we manage the systems that keep networks running smoothly, securely, and reliably - the backbone infrastructure that powers digital transformation for enterprises globally. Our Intelligent Network Operations platform delivers and enables AI-driven agentic ops at scale, automating and simplifying how companies manage, secure, and optimize their networks.

But what makes us different is how we work: we believe great work happens in an environment where you're trusted, heard, and supported. With teams globally, we're building a workplace culture that values collaboration and integrity as much as innovation. If you're looking to advance your career with a company that invests in its people, this is it.

About the role:

We're looking for a systems engineer to build and operate high-throughput, low-latency network infrastructure written in Rust. You'll work on the core data plane of a production DNS platform. This service that handles large query volumes with tight latency budgets, strong reliability guarantees. It's also a role where you stay close to the people who use what you build, translating real customer problems into the right technical solution.

What you'll do:

Design and implement components of a high-performance DNS engine: resolvers, forwarders, caching layers, and request-processing pipelines.

Implement and harden DNS protocol features across transports: UDP/TCP, DNS-over-HTTPS, DNS-over-TLS, DNSSEC, EDNS Client Subnet, and related standards.

Build features for traffic management and reliability: global server load balancing, health-checking, policy evaluation, response rewriting, and threat/security filtering.

Profile and optimize hot paths: memory allocation, data structures (tries, caches), connection pooling and multiplexing and back changes with benchmarks.

Integrate the data plane with control-plane services: configuration updates across distributed deployed nodes.

Own observability for your components: metrics, structured logging/tracing, and diagnostics that make production behavior legible.

Write thorough unit, integration, and component tests; keep the build green and the codebase clean (linting, formatting, dependency hygiene, security advisories).

Working with customers and product:

Listen directly to customers: through support escalations, field reports, and conversations to understand the problem behind the request, not just the feature they asked for.

Partner with product management to turn customer pain points into well-scoped features, and help shape the roadmap by grounding it in what's technically feasible and where the real leverage is.

Reproduce and diagnose customer-reported issues in production traffic patterns, then design fixes that address the root cause rather than the symptom.

What we're looking for:

Strong systems programming experience in Rust, including async programming with tokio

Solid grasp of networking fundamentals: TCP/UDP, TLS, HTTP, and ideally DNS or another wire protocol.

Experience writing performance-sensitive concurrent code, and the instinct to measure before and after with benchmarks and profiling.

A test-first, correctness-oriented mindset - you care about edge cases, graceful shutdown, backpressure, and deterministic behavior under concurrency.

Comfort working across a large workspace: crates/modules, shared libraries, plugin boundaries, and CI.

Strong communication skills and genuine customer empathy: you can talk to non-engineers, ask the right questions, and translate fuzzy problems into concrete engineering work.

Nice to have:

Open source work in the Rust/tokio ecosystem a major plus

DNS internals (record types, SOA/TTL handling, DNSSEC, ECS, dnstap).

Prometheus metrics, tracing, and production observability practices.

Protobuf/gRPC, service discovery, and control-plane/data-plane architectures.

Allocator tuning (jemalloc/mimalloc), lock-free/atomic programming, and low-level performance work.

Experience upgrading language toolchains and managing dependency/security posture over time.

Experience working directly with customers or in a product-partnered engineering role.

Impact:

Your work directly affects the performance, resilience, and security of a service that sits on the critical path for every request that depends on it. Small improvements in latency, memory, or correctness matter at scale, and because you stay close to customers, you'll see those improvements land as real problems solved.

$160,000 - $190,000 a year

The annual salary range for this position is 160.000 – 190.000 CAD, plus participation in a discretionary bonus plan. Final compensation will be determined based on skills, experience, and qualifications.

The role is for an existing vacancy.

If you share our enthusiasm for the future of our company and are eager to contribute to our vibrant workplace, we look forward to receiving your application! Our comprehensive benefits encompass your health, financial well-being, and overall wellness, and we are committed to providing an exceptional work environment, enriching employee programs, and fostering a remarkable company culture. At our core, we champion values such as transparency, curiosity, respect, and above all, the pursuit of enjoyment.

In addition, we offer a range of appealing perks, including:

A Professional Development Budget

Dedicated Wellness Days and Wellness Week

A Lifestyle Spending Account

An Employee Recognition Program

Join us in shaping the future of our organization, where your talent and dedication can truly thrive. We invite you to apply and become a valuable member of our team!

BlueCat is an Equal Opportunity Employer that is committed to inclusion and diversity. We also take affirmative action to offer employment and advancement opportunities to all applicants, including minorities, women, protected veterans, and individuals with disabilities. BlueCat will not discriminate or retaliate against applicants who inquire about, disclose, or discuss their compensation or that of other applicants.

Apply About employer

More about this job

Responsibilities

Design, implement, and optimize components of a high-performance DNS data plane, including protocol features, traffic management, reliability, security, and integration with control-plane services. Build observability and comprehensive tests, diagnose customer-reported issues, and collaborate with customers and product management to deliver practical solutions.

Requirements

Candidates should have strong Rust systems-programming experience, including asynchronous programming with Tokio, and a solid understanding of networking protocols such as TCP/UDP, TLS, and HTTP. They should also be experienced in performance-sensitive concurrent code, testing and correctness, and communicating with customers to translate problems into engineering work.

Skills

Rust
Tokio
Systems Programming
DNS
TCP/UDP
TLS
HTTP
Concurrent Programming
Performance Optimization
Benchmarking and Profiling
DNSSEC
Observability
Prometheus
Tracing
Protobuf/gRPC
Customer Communication

Benefits

Discretionary Bonus Plan
Professional Development Budget
Wellness Days
Wellness Week
Lifestyle Spending Account
Employee Recognition Program
Health and Wellness Benefits

Visa sponsorship

Not detected in the job text

Keywords

Rust
Tokio
DNS
DNS Resolver
DNS Forwarder
DNS Caching
UDP
TCP
DNS-over-HTTPS
DNS-over-TLS
DNSSEC
EDNS Client Subnet
Global Server Load Balancing
Health Checking
Traffic Management
Threat Filtering
Performance Profiling
Benchmarking
Concurrent Programming
Prometheus
Structured Logging
Distributed Systems
Control Plane
Data Plane
Protobuf
gRPC
Service Discovery
jemalloc
mimalloc
CI

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