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Added 1 min ago
Software Developer
ADGA Group Consultants Inc
Ottawa, ON
$70,000 to $90,000 CAD / year
Full-time
ADGA is seeking Software Developers to support the design, development, implementation, and maintenance of software applications and systems.
Added 1 min ago
In Store Bakery - Baker
Sobeys Capital Incorporated or a Franchise/Affiliate / ou une franchise/société affiliée
Shelburne, NS
We offer a Total Rewards package designed to support teammates at work and in life. Depending on role and eligibility, teammates may receive health and dental benefits, retirement and…
Added 1 min ago
Deli Manager
Freson Bros.
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Schedule Deli and Hospitality Team Members to ensure that production and customer needs are met
Added 1 min ago
Manufacturing Engineering Manager
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Toronto, ON
…leading the Manufacturing Engineering team. They ensure that new production programs are launched effectively, and that existing production programs are supported with continuous…
Added 1 min ago
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Mississauga, ON
Support Change Management and Production Readiness Activities
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Baker Mixer - Production - Night
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Added 16 mins ago
Analytical Lab Technician I
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Added 16 mins ago
Energy Markets & Settlements Internship
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Internship
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Added 16 mins ago
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Added 30 mins ago
Tandem Java support Specialist
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Added 30 mins ago
Audio Visual Operator
York University
Hamilton, ON · Dundas, ON
Full-time
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Added 30 mins ago
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Added 30 mins ago
Produce Production Assistant
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$21 CAD / hour
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Added 31 mins ago
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Added 31 mins ago
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As a Software Developer, you'll design, build, and ship features across our platforms. You'll work closely with product owners, QA, and support to take well-scoped requirements from design…
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$114,400 to $183,000 CAD / year
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Added 31 mins ago
Digital Solution Architect Lead Advisor
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Added 46 mins ago
Senior Architecte IA/ML | Senior AI/ML Architect, Services professionnels pour le secteur public | Public Sector Professional Services
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…ces solutions à un niveau de maturité prêt pour la mise en production. Ils ont à cœur de définir des objectifs innovateurs et de fournir les solutions techniques pour les…
Added 46 mins ago
Sales Manager - Business Travel
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Full-time
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Added 46 mins ago
Manager, IT Quality Assurance
BRP
Montreal, QC
…and our internal applications) before they are released into…

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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