Senior Software Engineer
Paramount Commerce
- Halifax, Nova Scotia, Canada
- Halifax, Nova Scotia, Canada
About
As a proud member of Payments Canada, we're deeply connected to the evolving financial landscape, helping ensure our solutions remain compliant, reliable, and future ready. Security, risk management, and data integrity are at the core of everything we build, and we power payment solutions that are seamless, thoughtfully designed, and built to scale.
As we continue to grow our business across Canada and prepare for expansion into new markets, we're looking for curious, thoughtful, data driven individuals who enjoy directly solving complex problems themselves and pushing ideas from concept to execution, in a rapid iterative environment with highly capable peers. If you're excited about building the future of payments - and want to be part of a team that's shaping what's next - we'd love to hear from you.
The Opportunity
We're on the lookout for a Senior Software Engineer to join our Risk Engineering Team. Our Risk team sits at the heart of our payments platform, responsible for protecting our customers from financial fraud, ensuring compliance with the regulatory bodies that oversee our financial partners, and making high confidence decisions in real time as money moves through the system. We're building the next generation of our risk platform: low-latency orchestration + configurable rules + event-driven auditability.
As a Senior Software Engineer on the Risk team, you'll help design and build the systems that analyze every transaction as it happens, validating bank accounts, screening for sanctions, detecting fraud, and identifying money laundering and layering patterns. This is complex, high impact work that blends distributed systems, data-driven decision making, and deep levels of responsibility and ownership.
The systems you build won't just process data, they'll actively prevent financial crime, safeguard our platform, and enable secure, compliant payments at scale.
What You'll Do
You'll own meaningful parts of our real time risk platform end to end, from early ambiguity and technical design through implementation, deployment, and iteration. Your work will include:
Risk Scoring & Orchestration: designing low latency systems end to end with parallel checks, strict timeouts, fail open behavior, and safe cancellation semantics
Rule Engine Foundations: building configurable rules, evaluation strategies, test modes, and merchant specific logic
Risk Signals & Checks: implementing name matching, sanctions and negative lists, third-party fraud checks, and device/IP/location signals
Event Pipelines & Audit Trails: ensuring reliable event production using patterns like outbox, with strong consistency and no silent drops
Performance & Reliability: improving p95/p99 latency, handling backpressure, retries, idempotency, and hardening systems for production incidents
Production Ownership: building and operating services (primarily Golang & Kubernetes based), adding observability that answers real questions, and sharing on-call responsibility
Collaboration & Influence: partnering closely with Product, Data, and Risk stakeholders to ship iteratively, mentor teammates, and drive thoughtful technical decisions
AI-Assisted Development: using AI tools to accelerate understanding and validate assumptions, while maintaining strong engineering judgment
Tech Stack
Golang + Kubernetes for real-time services
Postgres (CNPG) + Redis for low-latency storage/caching
WarpStream (Kafka-compatible) for event streaming + outbox/replay
BigQuery as the analytics warehouse (risk insights, reporting, model evaluation)
Airbyte for ingestion/ELT into BigQuery
Observability: Grafana + Prometheus (+ tracing/logging)
React + Microfrontends for self-serve/configuration/investigation tools
CI/CD and multi-cloud (AWS/GCP)
What Success Looks Like
In your first 30-60 days, you'll ship a real production feature and take ownership of a subsystem with clear metrics (latency/error categories/event delivery). You'll improve something measurable: a reliability gap, an operational blind spot, or p99 tail latency
Who You Are
We're looking for a senior engineer who combines strong technical depth with sound judgment, ownership, and collaboration. Someone who enjoys solving hard problems that matter.
Must Haves
8+ years of engineering experience
Strong in Go skills, including building services with concurrency, timeouts/cancellation, and clean APIs
Kubernetes and production operations experience (deployments, rollouts, troubleshooting, resource tuning)
Solid distributed systems fundamentals retries, idempotency, backpressure, failure modes, and safe degradation (fail-open vs fail-closed)
Solid data modeling + SQL (Postgres), with disciplined schema evolution, migrations, and validation
Observability-first approach, can design and use metrics/logs/tracing to debug issues and improve p95/p99 performance (Grafana/Prometheus or equivalent)
Comfortable with CI/CD pipelines and automated testing; you ship iteratively and safely (feature flags, progressive rollout, strong PR hygiene)
Production ownership, willing to participate in on-call rotation, contribute to incident response, and drive root-cause fixes
Ability to use AI tools to support exploration, code comprehension, and validation, without outsourcing critical thinking
Can balance speed, quality, and complexity, and make thoughtful decisions in ambiguous situations
Level headed ability to bring calm to complexity. You're confident without ego, motivated, and steady in fast-paced environments
Strong opinions, loosely held. You care deeply about doing great work, advocate for your ideas, and are equally open to new perspectives
Nice to Haves
Payments / fraud / risk / compliance experience
Event-driven architecture (outbox, streaming, CQRS concepts)
Performance profiling and optimization (latency and allocations)
Experience building internal tooling or configuration heavy platforms (rules/workflows)
How We Work
We move fast, ship in small increments, and use production feedback loops to improve. This is a high ownership team that moves quickly, and will expect you to operate what you build and communicate clearly.
If you're someone who enjoys high ownership with strong alignment on outcomes, you'll have autonomy to propose and drive architecture decisions, crisp communication and practical delivery, you make and work well in an AI driven environment, then you'll fit right in.
We value curiosity, self directed learning, and people who enjoy stretching beyond what they already know. If everything above doesn't perfectly describe you, but you're excited to learn, adapt, and grow into new areas, we'd still love to hear from you.
Why Paramount Commerce?
Canadian company with over 22 years of history
Competitive salary
Generous defined vacation benefits + summer fridays
Health & dental benefits
Wellness spending account
Retirement savings matching plan
Remote first environment
Quality hardware provided to do your work
Parental leave top up program
Birthday day off
Quarterly socials
Volunteer days to give back to our community
The base salary range for this full-time position is $145,000 - $190,000 CAD.
Final compensation will be dependent on experience, skillset, and role related qualifications, and will include benefits and bonus as per company policy. Please note that base salary ranges may differ based on location and local currency.
We use technology assisted tools, including artificial intelligence, to support parts of our recruitment process (such as resume screening, note taking, and interview scheduling). These tools are designed to support, but never replace human judgement. All hiring decisions are made by humans, and we are committed to fair, inclusive, and bias-aware hiring practices.
DEI
At Paramount Commerce, we are proud to be an equal opportunity employer, and we do our best to make sure all people feel supported and connected at work. We practice ethical and fair hiring processes and strongly encourage applications from all backgrounds.
We believe that different perspectives, experiences, backgrounds, and skill sets are what make for high performing teams, and we are committed to creating a place for our employees to be their authentic selves. Don't worry if you don't check every box. If you're excited about this role and think you'd be a good fit, we encourage you to apply.
Accommodations
Accommodations are available on request for candidates taking part in all aspects of the recruitment process. If you require any accommodation, please let us know and we will work with you to provide the necessary support.
Languages
- English
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