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Senior Java Developer jobs in Aurora, ON

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    • We're looking for a senior engineer who can take ownership of complex systems, make sound technical decisions, and drive meaningful outcomes.
    • 2+ years in a tech lead or senior engineering role with direct team leadership.
    • Lead a small team of 2–4 developers, providing mentorship and day-to-day…
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    • 5+ years of experience leading a software engineering team, working with others to solve problems, sharing knowledge, grow and mentor developers.
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    • Mentor and guide developers by providing quality coaching and ensuring proper execution of their tasks.
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    • Hybrid - Candidate MUST be able to work 3 days onsite and 2 days remote.
    • Analysis, Design, Implementation and Testing.
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    • Contract 4+ months, possible extension.
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Job Post Details

Senior Software Engineer (Node.js, React) - job post

Frontier Dental Supply
3.7 out of 5 stars
Markham, ON•Hybrid work
$90,000–$110,000 a year - Full-time
You must create an Indeed account before continuing to the company website to apply

Job details

Pay

  • $90,000–$110,000 a year

Job type

  • Full-time

Location

Markham, ON•Hybrid work

Benefits

Pulled from the full job description

  • Tuition reimbursement
  • Paid time off
  • Vision care
  • Dental care
  • Casual dress
  • On-site parking

Full job description

Sr. Software Engineer (Node.js, React)

We're looking for a senior engineer who can take ownership of complex systems, make sound technical decisions, and drive meaningful outcomes. You'll work across the full stack - backend services, frontend applications, infrastructure, and data - with significant autonomy over how problems get solved.

This isn't a role where someone hands you tickets. You'll assess tradeoffs, identify what matters, and ship solutions that move the business forward.

Key Responsibilities: 

  • Make technical decisions with business awareness - evaluate options, assess risks, understand downstream impact, and choose the right path - not just the clever one
  • Own systems end-to-end - from database schema to API design to UI, across multiple services
  • Analyze impact before acting - understand how changes propagate through interconnected services, data pipelines, and scheduled jobs before committing to an approach
  • Improve what exists - identify bottlenecks, reduce fragility, expand test coverage, and modernize legacy code pragmatically
  • Design for reliability - build systems that handle failure gracefully, with proper observability, error handling, and recovery
  • Set technical direction - establish patterns, review architecture, and raise the engineering bar for the team

  Tech Stack:

  • Backend: Node.js, Express, TypeScript
  • Frontend: React, Vite, Tailwind CSS
  • Databases: MongoDB, MySQL
  • Caching: Redis
  • Infrastructure: Docker, cloud deployment (DigitalOcean), Turborepo Monorepo
  • Scheduling: Cron-based job orchestration
  • Integrations: REST APIs, web scraping, proxy management

Technical Skills: 

  • Strong production experience with TypeScript/Node.js and Express
  • Solid skills across MongoDB and MySQL - schema design, query optimization, migrations
  • Experience building and maintaining React frontends
  • Hands-on with Docker, cloud infrastructure, and CI/CD pipelines
  • Experience with Monorepo architecture and multi-service systems
  • Demonstrated ability to make technical decisions independently - weighing tradeoffs, assessing blast radius, and communicating rationale clearly
  • Strong impact analysis skills - you think through second-order effects before making changes to production systems
  • Experience with web scraping, proxy rotation, and third-party API integration at scale
  • Familiarity with Redis caching and scheduled job orchestration

 Nice to Have:

  • Experience with AWS services (EC2, ECS, Lambda, RDS, S3, CloudWatch, or similar)
  • Familiarity with Kubernetes - container orchestration, deployments, scaling, and cluster management
  • Experience with observability platforms (Datadog or similar)
  • Background in e-commerce, marketplace integrations, or dynamic pricing systems
  • Experience leading small engineering teams

  AI Usage:

AI tools are a core part of how we work:

  • Claude Code and Cursor are used daily for development - code generation, refactoring, debugging, and architectural reasoning
  • We expect you to be proficient with AI-assisted development and use it to move faster without sacrificing quality
  • Experience applying AI/ML to business problems (optimization, forecasting, anomaly detection) is a plus

  Who You Are:

  • You think before you build. You ask "what breaks if this changes?" before writing code
  • You communicate decisions clearly - to engineers and to non-technical stakeholders
  • You take ownership of outcomes, not just tasks
  • You're pragmatic - you ship working solutions and improve iteratively rather than chasing perfection
  • You're comfortable with ambiguity and can turn vague problems into concrete plans

Job Type: Full-time

Pay: $90,000.00-$110,000.00 per year

Benefits:

  • Casual dress
  • Dental care
  • On-site parking
  • Paid time off
  • Tuition reimbursement
  • Vision care

Work Location: Hybrid remote in Markham, ON

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