Mississauga, On Senior javascript full stack developer Jobs – 118 Openings This Week

Senior Full Stack Developer
Thrive Career Wellness Inc —Toronto, ON
- $100,000–$120,000 a year
- Azure
- AWS
- JavaScript
7h
Java Developer - Java/React
Scotiabank —Toronto, ON
- Computer Science
- Engineering
- Java
- Tuition reimbursement
Senior Lead Software Engineer – Regulatory Reporting & Big Data
Citi —Mississauga, ON
- $120,800–$170,800 a year
- Full-time
- Hybrid work
- Management
- Computer Science
- Engineering
19h
Senior Salesforce Developer
Tata Consultancy Services —Toronto, ON
- Management
- Salesforce
- JavaScript
Staff Back End Engineer (Applications)
Forma.ai —Toronto, ON
- Java
- Databases
- SQL
- Disability insurance
- Dental care
Senior Test Developer (Automation)
SkillsWave Corporation —Toronto, ON
- Full-time
- Hybrid work
- Computer Science
- Engineering
- AWS
Quick apply
Senior Software Engineer | Remote | AI SaaS Software Role
Process Street —Toronto, ON
- Full-time
- Remote
- Java
- AWS
- JavaScript
- Dental care
- Paid time off
Quick apply
Principal Software Engineer - Platform, Identity and BI
Calabrio —Toronto, ON
- On call
- Remote
- DevOps
- Java
- SQL
- Designated paid holidays
- Disability insurance
Quick apply

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Sr. Software Developer
TRITON Canada Inc. —Toronto, ON
Leverage AI-assisted development tools responsibly and effectively to improve development efficiency while maintaining high engineering standards.
$100,000–$125,000 a year
Quick apply
5d
.NET Full Stack Developer
Merrithew International Inc. —Scarborough, ON
Solid understanding of software engineering principles, design patterns, coding standards, and development best practices. Strong proficiency in C#, ASP.
$85,000–$95,000 a year
Quick apply

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Senior Full Stack Developer

Thrive Career Wellness Inc
Toronto, ON

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Job details

Permanent
$100,000–$120,000 a year
7 hours ago

Qualifications

CI/CD
Azure
Node.js
React
Google Cloud Platform
AWS
Ruby on Rails
JavaScript
PostgreSQL
Ember.js
Angular
Django
MySQL

Full job description

We are seeking a Senior Full-Stack Engineer to join our growing Engineering team at Thrive. This role is ideal for someone who thrives in a fast-paced startup environment, enjoys solving challenging problems, and is passionate about building high-quality, scalable software that impacts millions of career journeys.
As a key contributor, you will ship end-to-end features, collaborate closely with product and design, and play a meaningful role in shaping our technology, processes, and engineering culture. If you enjoy autonomy, mentorship, and working with modern technologies, this role is a strong fit.
Key Responsibilities:

Act as a key member of the Engineering team, responsible for shipping end-to-end features frequently and with confidence.
Work collaboratively with product managers and designers, guiding decisions based on deep knowledge of codebase structure and technical feasibility.
Participate in code reviews, providing constructive feedback and maintaining high code quality across the team.
Mentor and be mentored by engineers at various levels, fostering a culture of continuous learning and technical growth.
Actively engage in team rituals such as retrospectives, contributing to ongoing improvements in technology, processes, and team culture.
Give and receive feedback in support of a safe, collaborative, and growth-oriented engineering environment.

Business Problem the Senior Full-Stack Engineer Will Solve:This role will help drive the development of scalable, reliable features that support Thrive’s mission to advance career wellness. By building high-quality systems and collaborating across the organization, you will directly contribute to delivering impactful solutions that serve millions of users navigating their career journeys.
Ideal Candidate Demographics (Experience & Skills):

5+ years of experience as a professional software developer shipping production-level code.
Proficiency building single-page applications using JavaScript frameworks such as Ember or React. Extensive experience with Angular, Vue, or similar frameworks will also be considered.
Proficiency building scalable distributed backend services using Ruby on Rails and PostgreSQL. Experience with Sinatra, Django, Phoenix, Node, or mySQL is also accepted.
Strong experience with modern testing frameworks (RSpec, Cypress, Jest, QUnit, or equivalents).
Proven ability to build and maintain fully automated CI/CD pipelines.
Proficiency working in cloud environments, ideally AWS; experience with GCP or Azure is also valuable.

Life at Thrive:

High-trust environment with autonomy, ownership, and flexibility
Fast-paced startup culture with strong mentorship and growth opportunities
Fully remote work environment with optional access to downtown Toronto office space

Total Rewards Package:

3 weeks paid vacation
Health Insurance & Wellness Coverage
Yearly Learning & Development Allowance
Yearly Workspace Allowance
Access to licensed learning platforms

This posting is for an existing position; Thrive is recruiting to fill a vacancy created by a departure, not a new role. Thrive uses artificial intelligence tools to assist in the screening and assessment of applications. AI may be used to review resumes and support initial candidate evaluation, though all hiring decisions are made by Thrive personnel. If you require accommodation at any time during the recruitment process, please let us know.
At Thrive, we understand and value diversity in our employees and are proud to be an Equal Opportunity Employer. Only those legally entitled to work in Canada will be considered for interview and employment.

Apply Now

Refine Your Search

senior javascript full stack developer jobs in mississauga, on

Senior Full Stack Developer

Java Developer - Java/React

Senior Lead Software Engineer – Regulatory Reporting & Big Data

Senior Salesforce Developer

Staff Back End Engineer (Applications)

Senior Test Developer (Automation)

Senior Software Engineer | Remote | AI SaaS Software Role

Principal Software Engineer - Platform, Identity and BI

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