Senior Software Developer jobs in Clarkson, ON
Senior Software Engineer
Easily applySoneil SparkBrampton, ON L6T 3T6- $105,000–$125,000 a year
- Full-time +1
- Paid time off
- Vision care
- Dental care
- Employee assistance program
- Casual dress
- Flexible schedule
- 7+ years of professional software engineering experience, with a strong track record in backend development.
- Collaborate with frontend engineers to define clean…
- RemcoMississauga, ON L4W 5R8
- $100 an hour
- Temporary
- Experience across the full software development lifecycle, from requirements and design through testing, deployment and support, in Agile or waterfall projects.
- Capital One - CAToronto, ON M5R 3V5
- Full-time
- Experience with full stack software development.
- At least 10 years of experience as a hands-on software engineer.
View similar jobs with this employerCapital One - CAToronto, ON M5R 3V5- Full-time
- Experience mentoring software engineers or architects.
- 10+ years of experience in software engineering.
- Helping customers view and monitor their credit scores…
- Capital One - CAToronto, ON M5R 3V5
- Full-time
- Experience mentoring software engineers or architects.
- 10+ years of experience in software engineering.
- Helping customers view and monitor their credit scores…
- Capital One - CAToronto, ON M5R 3V5
- Full-time
- Experience mentoring software engineers or architects.
- 10+ years of experience in software engineering.
- We are solving real customer problems: we need all…
Senior Graphic Designer – UI/UX & Digital
Easily applyNewEXM Manufacturing LtdMississauga, ON L5N 7X5- $75,000–$85,000 a year
- Full-time +1
- Paid time off
- Dental care
- Life insurance
- RRSP match
- Casual dress
- Extended health care
- Collaborate with management, marketing, sales, technical teams and software developers.
- The successful candidate will work across digital experiences, corporate…
- Capital One - CAToronto, ON M5R 3V5
- Full-time
- Experience mentoring software engineers or architects.
- 10+ years of experience in software engineering.
- Helping customers view and monitor their credit scores…
Senior Web and Mobile Developer
Easily applyManitoulin Group of CompaniesMississauga, ON L5T 1R1- $61,500–$72,000 a year
- Full-time
- Profit sharing
- As a senior web developer, you may meet with clients to review web design needs and preferences and provide advice on web applications maintenance.
Senior PeopleSoft HCM Developer
Easily applyBevertecMississauga, ON- $90–$94 an hour
- Contract
- Job Role: Software Developer - ERP / Case Management - Senior (Peoplesoft HCM modules experience).
- 5 days Onsite in a week.
View similar jobs with this employerCapital One - CAToronto, ON M5R 3V5- Full-time
- Continuously improve software engineering developer experience; identify gaps in existing internal framework and tools and contribute.
View similar jobs with this employerCapital One - CAToronto, ON M5R 3V5- Full-time
- Experience mentoring software engineers or architects.
- 10+ years of experience in software engineering.
- Helping customers view and monitor their credit scores…
Senior Data Engineer - AI Trainer
Easily applyDataAnnotationMississauga, ON- $40–$214 an hour
- Contract +1
- Flexible schedule
- Help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule.
- If you pass that assessment, you'll receive an email…
View similar jobs with this employerCapital One - CAToronto, ON M5R 3V5- Full-time
- Experience mentoring software engineers or architects.
- 10+ years of experience in software engineering.
- You'll spend your time designing scalable and secure…
View similar jobs with this employerCapital One - CAToronto, ON M5R 3V5- Full-time
- Experience mentoring software engineers or architects.
- 10+ years of experience in software engineering.
- You'll spend your time designing scalable and secure…
- Capital One - CAToronto, ON M5R 3V5
- Full-time
- Elevate the technical bar by mentoring and coaching engineers and other senior technical leaders, in addition to providing mentorship to Junior, Intermediate,…
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Job Post Details
Senior Software Engineer
Senior Software Engineer
Job details
Full job description
Location: Onsite Department: Engineering Reports To: Engineering Manager
About the Role
We're looking for a Senior Software Engineer to join our engineering team and take ownership of the backend systems powering our platform. You'll work closely with our existing frontend team, product, and leadership to design, build, and scale services that are reliable, secure, and ready to grow with the business. This is a senior-level, high-ownership role for someone who can operate independently, make sound architectural calls, and mentor other developers along the way.
While this role leans backend-heavy, you'll be comfortable moving across the stack when needed — our frontend is covered, but we value engineers who understand the full picture.
What You'll Do:
- Design, build, and maintain backend services and APIs that power our core platform, with a focus on reliability, performance, and maintainability
- Own and evolve our data layer — schema design, query optimization, and data integrity across relational databases
- Architect systems for scale: think through concurrency, caching, queuing, and failure modes before they become problems
- Collaborate with frontend engineers to define clean API contracts and ensure smooth integration between services and UI
- Deploy, monitor, and maintain services in a cloud environment (AWS or equivalent), including CI/CD pipelines and infrastructure-as-code where applicable
- Write clear technical documentation — specs, architecture decisions, API docs — that the rest of the team (and future hires) can actually use
- Participate in code review, set technical standards, and mentor junior/intermediate developers
- Work cross-functionally with product and leadership to translate business requirements into technical roadmaps
- Troubleshoot and resolve production issues, with an eye toward root cause rather than quick patches
- Contribute to technical decision-making around tooling, architecture, and process as the team and product scale
What We're Looking For:
- 7+ years of professional software engineering experience, with a strong track record in backend development
- Deep expertise in at least one modern backend language (Go, Node.js/TypeScript, Python, or similar) — Go experience is a strong plus
- Solid experience designing and consuming RESTful APIs understanding of API security and versioning best practices
- Well versed in using AI platforms to code (i.e. Claude Code, Codex, Cursor)
- Strong database fundamentals — schema design, indexing, query performance, both SQL and NoSQL exposure
- Hands-on experience with cloud infrastructure (AWS preferred) — EC2, Lambda, RDS, S3, or equivalent services
- Comfortable working with containerization and CI/CD pipelines (Docker, GitHub Actions, CircleCI or similar)
- Experience designing systems for scale and reliability — caching strategies, async processing, rate limiting, observability/monitoring
- Working knowledge of frontend frameworks (React/Next.js or React Native) — you don't need to live here, but you should be able to read the room
- Proven ability to work independently, own a problem end-to-end, and make pragmatic architectural decisions with limited oversight
- Strong written communication skills — comfortable producing specs, documentation, and roadmap material
- Experience mentoring other engineers or acting as a technical lead on a small team
Nice to Have:
- Experience with IoT, device communication protocols, or hardware-integrated systems
- Familiarity with EV charging infrastructure or protocols such as OCPP/OCPI
- Experience working in an early-stage or startup environment where you're wearing multiple hats
- Exposure to building internal tooling, admin dashboards, or CMS-style platforms
Pay: $105,000.00-$125,000.00 per year
Benefits:
- Casual dress
- Dental care
- Employee assistance program
- Flexible schedule
- On-site parking
- Paid time off
- Vision care
Work Location: In person