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Added 4 mins ago
Hose Technician
Toromont Cat
NS · Dartmouth, NS
Full-time
…employees who take care of our customers! When you join our team, you become a member of the Toromont family. Your success is our…
Added 4 mins ago
Senior Accounts Payable Specialist
OSL Retail Services Inc
Mississauga, ON
Other
…detail-oriented, accurate with numbers, and experienced in high-volume AP operations within a fast-paced corporate…
Added 4 mins ago
Casual Part Time (PT) Resident Programs Aide Sherwood Court Maple ON
Extendicare
Barrie, ON · Sherwood Court
Part-time
We may use artificial intelligence (AI) tools to support certain stages of the recruitment process, such as reviewing applications, analyzing resumes, or assessing candidate responses.…
Added 4 mins ago
Baker
Farm Boy Inc.
Ottawa, ON
From $18.25 CAD / hour
Full-time
At Farm Boy, it is our mission to create a fun, fresh experience for all! Whether you are a team member or a customer, Farm Boy is passionate about creating a unique fresh food shopping…
Added 4 mins ago
Technical Sales Representative/Engineer - Shotcrete Tunnel & Mining (Timmins, ON)
Sika AG
Timmins, ON
Full-time
Sika Canada has operations in Quebec, Ontario, Alberta, and British Columbia and employs more than 650 people in Canada. The company is ISO 9001 - 14001 certified and a member of the Canada…
Added 4 mins ago
Contrôleur Financier / Financial Controller
Scalian
Montreal, QC
Full-time
Nous mettons notre expertise en Opérations et Technologie et Technologies de l'information au service de secteurs variés tels que l'aérospatiale, la défense, le ferroviaire et l'énergie, en…
Added 17 mins ago
Bakery Assistant Department Manager - Full Time
Longo's
Toronto, ON · North York, ON
Full-time
We are looking for a Bakery Assistant Department Manager - Full Time who is passionate about food and enjoys working in a fast paced, team environment!
Added 17 mins ago
Junior Estimator
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Port Coquitlam, BC
$55,000 to $65,000 CAD / year
Full-time
…company BC, as a full-time Coordinator/Junior Estimator! As a member of our Estimating Team, you will gain practical knowledge of local Fire & Life Safety regulations, our services, and our…
Added 18 mins ago
Director, Public Relations & Communications
D2L
Canada
Every application we receive is personally reviewed by a member of our Talent Acquisition team - yes, a real person looks at your resume! While we use AI tools internally to streamline…
Added 18 mins ago
Field Service Technician - Heavy Equipment & Fire Suppression
Levitt-Safety
Whitewood, SK · Esterhazy, SK · Rocanville, SK · Moosomin, SK · Wapella, SK
Levitt-Safety may use AI-enabled tools to support the screening and assessment of applications. All AI-supported results are reviewed by a member of our recruitment team before any hiring…
Added 34 mins ago
Early Morning Freight Flow Associate
J.D. Irving, Limited
Fredericton, NB
Part-time
The Freight Flow Associate works with the logistics team to efficiently process and organize incoming freight shipments. As a key member of daily operations, freight handlers ensure…
Added 34 mins ago
Master Production Scheduler
Romet Limited
ON · Mississauga, ON
Full-time
For the right person this is an exciting opportunity to be developed and invested in to become an integral member of the Product Planning team. We are looking for a highly motivated,…
Added 48 mins ago
Assistant Surveyor
Ontario Transit Group - Ontario Line - Southern Civil, Stations & Tunnel
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Provide essential support to the team by working rotating shifts, including nights, as required to support continuous tunneling operations. Flexibility is essential to meet the demands of…
Added 48 mins ago
Technical Sales Representative/Engineer - Shotcrete Tunnel & Mining (Timmins, ON)
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Sika Canada has operations in Quebec, Ontario, Alberta, and British Columbia and employs more than 650 people in Canada. The company is ISO 9001 - 14001 certified and a member of the Canada…
Added 48 mins ago
Contrôleur Financier / Financial Controller
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Montreal, QC
Full-time
Nous mettons notre expertise en Opérations et Technologie et Technologies de l'information au service de secteurs variés tels que l'aérospatiale, la défense, le ferroviaire et l'énergie, en…
Added 48 mins ago
(CAN) Front End Assistant Manager
Walmart Canada
Longueuil, QC
Full-time
Position Summary...To support the Store Manager and manage store operations according to Company guidelines and lead Associates to ensure friendly, helpful service and drive profitable…
Added 1 hour ago
Janitor
Farm Boy Inc.
Aurora, ON
From $18 CAD / hour
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…detail, pride in your work, and a customer-first mindset, you’ll support both our customers and Team Members by maintaining shared spaces and contributing to a positive in-store experience.…
Added 1 hour ago
Order Management Coordinator (Manufacturing)
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$60,000 to $70,000 CAD / year
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Provide reliable off‑hours coverage as a member of the team’s rotating on‑call schedule.
Added 1 hour ago
Lead Security Analyst - Cloud Secuity
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Security Operations is the team that handles day to day protection of our environment and the tools that support them. This team takes care of identifying security weaknesses and…
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Administrative Co-Ordinator- Department of Diagnostic and Interventional Radiology
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We are looking for an Administrative Coordinator to join our team! As an integral member of the Department of Diagnostic and Interventional Radiology, the Administrative Coordinator will…
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Office Administrator
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Montreal, QC
Full-time
Maintain knowledge of ongoing projects to provide effective administrative support to the team.
Added 1 hour ago
Bilingual Associate Property Manager (ENG/FR)
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Reporting to the Property Manager, you will ensure all Property Management policies, procedures and operations are conducted effectively. You will develop, administer and submit regular…
Added 1 hour ago
Atlantic Canada Talent Community - Security & Smart Technologies
Tiree
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Full-time
…posting. We will keep your resume on file for the future, and a member of our Talent Acquisition team will be in touch if there's a potential match for your background and…
Added 1 hour ago
Spécialiste de projet – ingénierie - PLVG / Project Specialist – Engineering - GLLE
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…procurement, finance, IT, technical publications, customer support, integrated operations,…
Added 1 hour ago
Janitor
Farm Boy Inc.
Aurora, ON
$18 CAD / hour
Full-time
…detail, pride in your work, and a customer-first mindset, you’ll support both our customers and Team Members by maintaining shared spaces and contributing to a positive in-store experience.…

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

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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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