Senior Backend Engineer .NET & Python

PosiTrace Inc.; Vancouver; On-site; CAD 110,000 - 145,000; Full time

Benefits offered by this job

On-site Burnaby

Competitive salary

JetBrains licenses

Paid vacation & holidays

Benefits program

Architect-track career

Full-stack exposure

Learning opportunities

Job summary

PosiTrace is seeking a senior backend engineer to co-own the MACH evolution and build scalable backend services in .NET 8 / C# and Python. You will design microservice boundaries, APIs, and data flows while decomposing a Rails monolith into independent services, with focus on GPS telemetry, history processing, and billing.

Join our on-site team at the Burnaby headquarters to collaborate with Rails, DevOps, and QA, deploying with Docker/Kubernetes and operating in Google Cloud Platform.

Qualifications

• Production experience with .NET 8 / C# backends.
• Production experience with Python (FastAPI or Flask).
• Strong MySQL query optimization and schema design for high-load systems.
• Experience with Redis for caching or session management.
• Experience with RabbitMQ or similar brokers and async job queues.

Responsibilities

• Build and maintain backend services in .NET 8 / C# and Python (FastAPI, Dramatiq workers, Dask pipelines).
• Design microservice boundaries, API contracts, and data flows during monolith decomposition into services.
• Work on GPS telemetry ingestion, history processing, reporting, and billing systems.

Skills

C# backend

Python backend

MySQL optimization

Redis caching

RabbitMQ

Git/GitFlow

Docker

Kubernetes

REST APIs

Cloud (GCP)

Tools

BitBucket Pipelines

FastAPI

Dramatiq

Dask

Job description

PosiTrace is a founder-led SaaS company specializing in GPS fleet tracking, AI-powered dash cameras, and asset management solutions.

PosiTrace builds a real-time GPS fleet tracking SaaS platform -- vehicle location, telemetry processing, reporting, dispatching, and fleet management tools for SMB and enterprise customers across Canada and Mexico. Our backend processes millions of GPS data points daily across multiple receiver protocols.

We're migrating toward MACH (Microservices, API-first, Cloud-native, Headless) and need a senior backend engineer to co-own that evolution.

This is a full-time, on-site position at our Burnaby, BC headquarters. Not available for remote or hybrid.

What You'll Do

• Build and maintain backend services in .NET 8 / C# and Python (FastAPI, Dramatiq workers, Dask data pipelines)
• Design microservice boundaries, API contracts, and data flows as we decompose a monolithic Rails application into independent services
• Work directly on core platform systems: GPS telemetry ingestion, history processing, reporting engine, dispatching services, billing and subscription management
• Write and review production-grade, test-driven code; enforce quality through code reviews across .NET and Python codebases
• Design and optimize MySQL queries and schemas for high-volume transactional workloads (10M+ row tables, complex joins across billing/device/contract hierarchies)
• Build and consume RESTful APIs; design webhook delivery systems and event-driven integrations
• Deploy to production via BitBucket Pipelines, Docker, and Kubernetes (GKE) with zero-downtime rolling updates
• Produce architecture documentation: system diagrams, data flow diagrams, ADRs in Confluence
• Manage async job processing with RabbitMQ and Dramatiq/Delayed Job workers
• Operate within Google Cloud Platform: GKE, Cloud SQL, Cloud Storage, Secret Manager, BigQuery
• Collaborate with the Rails team, DevOps, and QA; work with the Engineering Team Lead and VP of Engineering on technical direction
• Estimate tasks, communicate blockers, and participate in sprint planning using Jira and GitFlow branching

What You Bring

• Production experience with .NET 8 / C# -- building, testing, and deploying backend services
• Production experience with Python -- FastAPI or Flask, async task processing, data manipulation (Pandas, Dask)
• Strong MySQL skills: query optimization, indexing strategies, schema design for high-load systems
• Experience with at least one of: PostgreSQL, Elasticsearch, MongoDB, BigQuery
• Experience with RabbitMQ or similar message brokers and async job queues
• Track record of designing and implementing microservices -- service decomposition, inter-service communication, API versioning, backward compatibility
• Familiarity with Redis for caching and session management
• Experience with Git/GitFlow branching workflow and BitBucket or similar platforms
• Ability to write clear technical documentation and communicate tradeoffs to both engineers and non-technical stakeholders
• Strong written and spoken English

What Sets You Apart

• Experience with Ruby on Rails; understanding Rails conventions and ActiveRecord is critical for designing migration paths
• Experience with Go
• MongoDB experience
• Experience with Elixir
• Background in IoT / telematics: GPS device protocols, high-throughput telemetry ingestion, real-time data pipelines
• Experience with AI/ML integration: MCP servers, LLM API orchestration
• Experience with Angular frontend; helpful for full-stack debugging
• SOC2 compliance experience
• Monitoring and observability: Zabbix, GrayLog, GCP Cloud Monitoring

What We Offer

• On-site, full-time at our Burnaby headquarters -- no remote, no hybrid
• Salary: CA$110,000 - CA$145,000/year based on experience
• Direct architectural impact on a multi-service SaaS platform processing real-time GPS data at scale
• State-of-the-art hardware, JetBrains licenses (Rider, PyCharm, RubyMine)
• Paid vacation, holidays, and sick days
• Benefits program
• Architect-track career progression
• Work across the full stack: .NET microservices, Python data pipelines, Rails, GKE infrastructure
• Individualized development plan and continuous learning opportunities

We welcome all qualified applicants, prioritizing skill and character.