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

Senior Developer, Fullstack - Identity and Access Management (IAM)
Fullscript —Toronto, ON
- $125,000–$165,000 a year
- Full-time
- Remote
- JavaScript
- Software development
- Wellness program
- Paid time off
Quick apply
Software Engineer (Intermediate and Senior Levels)
Felix —Toronto, ON
- $110,000–$160,000 a year
- Full-time
- Remote
- JavaScript
- Leadership
- Dental care
- Vision care
Quick apply
Senior Software Developer - Workflows
Verily —Toronto, ON
- $146,500–$164,500 a year
- Full-time
- Azure
- Computer Science
- Engineering
Digital Senior Developer
Definity Financial Corporation —Toronto, ON
- $92,000–$142,000 a year
- Full-time
- Hybrid work
- Computer Science
- DevOps
- Databases
- Tuition reimbursement
- Paid time off
Staff Software Engineer
Confluent —Toronto, ON
- $255,600–$300,300 a year
- Full-time
- Java
- AWS
- JavaScript
Associate Apps Architect
Bayshore HealthCare —Mississauga, ON
- $68,900–$86,100 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- DevOps
Fullstack Java Developer
Tata Consultancy Services —Toronto, ON
- Oracle
- DevOps
- Java
Java Developer - Java/React
Scotiabank —Toronto, ON
- Computer Science
- Engineering
- Java
- Tuition reimbursement
AVP - Java Developer Sr Programmer Analyst
Citi —Mississauga, ON
- $94,300–$141,500 a year
- Full-time
- Hybrid work
- Oracle
- Computer Science
- Engineering
Senior Software Support Analyst
EllisDon Group —Mississauga, ON
- $90,000–$120,000 a year
- Full-time
- JavaScript
- APIs
- Python
Software Engineer
Bayview Asset Management —Toronto, ON
- $160,000–$200,000 a year
- Full-time
- Remote
- Analysis skills
- JavaScript
- APIs
11d
Team Lead, Software Developer
GoBolt —Toronto, ON
- $160,000–$175,000 a year
- Immediate opening
- Hybrid work
- AWS
- JavaScript
- AI
- Dental care
- Vision care
Quick apply
10d
Tech Lead (Remote First)
Zensurance —Toronto, ON
- $150,000–$170,000 a year
- Full-time
- Remote
- DevOps
- AWS
- Bachelor's
- Dental care
Quick apply
Senior Software Developer 2, Artificial Intelligence
D2L —Toronto, ON
- $130,000–$160,000 a year
- Remote
- Computer science
- Azure
- Computer Science
- Tuition reimbursement
Quick apply
Sr Software Engineer - Core Backend & Platform Engineering
Basis —Toronto, ON
- $119,051–$160,000 a year
- Full-time
- Remote
- Java
- AWS
- JavaScript
Quick apply
Software Developer (Contract)
Cyber-Infomax Solutions Inc. —Toronto, ON
- $70–$95 an hour
- Temporary
- Hybrid work
- Azure
- Oracle
- DevOps
Quick apply
6d
Applications Development Technology Lead Analyst - Vice President
Citi —Mississauga, ON
- $120,800–$170,800 a year
- Full-time
- Hybrid work
- Oracle
- DevOps
- Java
Lead AI Engineer, Banking Technology - Senior Vice President
Citi —Mississauga, ON
- $145,100–$217,700 a year
- Full-time
- Hybrid work
- Computer Science
- Java
- Master's degree
Front-End Developer | Oakville
SearchVelocity —Oakville, ON
- Computer Science
- Engineering
- Bachelor's
GBM - Technology Analyst (Web Developer) Internship/Co-op - Fall 2026
Scotiabank —Toronto, ON
- SQL
- Analysis skills
- JavaScript

I want to receive the latest job alerts for senior javascript full stack developer in mississauga, on

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

senior javascript full stack developer jobs near mississauga, on

Senior Developer, Fullstack - Identity and Access Management (IAM)

Fullscript -
Toronto, ON

Quick apply

Job details

Full-time
$125,000–$165,000 a year

Qualifications

Authentication
SSO
Landscape maintenance
React
Web development
Ruby on Rails
JavaScript
Software development
GraphQL
TypeScript
Identity & access management

Full job description

About Fullscript

We’re an industry-leading health technology company on a mission to help people get better. We started in 2011 with one simple idea. Make it easier for practitioners to access the products they trust so they can deliver better care.

That simple idea grew into a platform that powers every part of care. Today, more than 125,000 practitioners use Fullscript for clinical insights, lab interpretations, patient analytics, education, and access to high-quality supplements. Over 10 million patients rely on Fullscript to stay connected to their care plans and follow through on treatment.

We build tools that make care smarter and more human. Tools that save time, simplify decisions, and help practitioners stay closely connected to the people they care for. When everything they need is in one place, they can focus on what matters most: helping people get better.

This is your invitation.

Bring your ideas, your grit, and your care for people.

Join us and shape the future of care.

We are seeking a Senior Fullstack Developer for our Identity and Access Management (IAM) Engineering team.

As a Senior Developer, you will play a critical role in developing and maintaining all things IAM, including authentication, authorization, and identity. You'll contribute directly to the systems powering sign-up, login, SSO integrations, and our OAuth flows. You’ll work closely with your teammates, engineering leads, product, and security stakeholders to deliver secure, reliable, and scalable solutions.

This is how we like building software: https://fullscript.com/developer-handbook If you share our values, we’d be excited to talk with you!

What you'll do:

Collaborate with your pod — a small, focused team of full-stack engineers — to build and maintain IAM capabilities
Contribute to backend and frontend codebases with an eye toward reliability, scalability, and security
Participate in technical design discussions and help break down projects into clear, actionable tasks
Identify and suggest improvements to our authentication and authorization flows
Help support the maintenance and uptime of IAM systems, including investigating and resolving production issues
Work closely with product, security, and legal stakeholders to ensure compliance and integrity of user data and access
Stay informed on evolving security practices, frameworks, and technologies

What you bring to the table:

A collaborative mindset and a willingness to share knowledge and ideas with teammates
Passion for IAM and security — you care about protecting users and understanding the threat landscape
Experience with authentication protocols, SSO (SAML, OAuth), RBAC, and MFA
5+ years of professional software development experience
Hands-on experience with modern web development — we use Ruby on Rails, React, JavaScript/TypeScript, GraphQL, and Apollo
A commitment to writing clean, maintainable code and fostering strong engineering practices

What we can offer you:

Generous PTO and competitive pay
Fullscript’s RRSP match program for financial health
Flexible benefits package and workplace wellness program
Training budget and company-wide learning initiatives
Discount on Fullscript catalog of products
Ability to work Wherever You Work Well*

Our Wherever You Work Well philosophy means Fullscript teammates get to pick their own office — whether that’s in-office, at home, or a bit of both \uD83D\uDC36\uD83C\uDFE1

Compensation range

The salary range for this role is between $125,000 and $165,000 CAD. Fullscript shares salary ranges to support transparency and help candidates make informed decisions. The range shown reflects base salary only and does not include stock options, wellness stipends, or other benefits that are part of Fullscript’s total rewards package.

Final compensation depends on experience, skills, and location. We review pay regularly to stay aligned with market data and internal equity. Benefits and total rewards may vary by region.

Why Fullscript

Great work happens when people feel supported, trusted, and inspired. At Fullscript, we stay curious and keep finding smarter ways to make care better. We grow together, take on new challenges, and focus on impact. We put people first, work as a team, and leave egos at the door.

What to Know Before You Apply

We’re grateful for the interest in joining Fullscript. To make sure your application reaches our hiring team, please apply directly through our careers page.

A quick note: Due to the high volume of applications, we’re not able to respond to phone or email inquiries about application status. If there’s a match, our team will reach out directly.

Fullscript is an equal opportunity employer committed to creating an inclusive workplace. Accommodations are available upon request at [email protected].

All offers are contingent on successful background checks conducted in compliance with federal, state, and provincial laws.

We use AI tools to support parts of the hiring process, including screening and reviewing responses. Final hiring decisions are always made by people and follow all applicable privacy and employment laws in Canada and the U.S.

Learn More

www.fullscript.com

@fullscriptHQ on instagram

Let’s make healthcare whole

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Quick apply

Refine Your Search

senior javascript full stack developer jobs in mississauga, on

Senior Developer, Fullstack - Identity and Access Management (IAM)

Software Engineer (Intermediate and Senior Levels)

Senior Software Developer - Workflows

Digital Senior Developer

Staff Software Engineer

Associate Apps Architect

Fullstack Java Developer

Java Developer - Java/React

AVP - Java Developer Sr Programmer Analyst

Senior Software Support Analyst

Software Engineer

Team Lead, Software Developer

Tech Lead (Remote First)

Senior Software Developer 2, Artificial Intelligence

Sr Software Engineer - Core Backend & Platform Engineering

Software Developer (Contract)

Applications Development Technology Lead Analyst - Vice President

Lead AI Engineer, Banking Technology - Senior Vice President

Front-End Developer | Oakville

GBM - Technology Analyst (Web Developer) Internship/Co-op - Fall 2026

I want to receive the latest job alerts for senior javascript full stack developer in mississauga, on

Related Searches

Explore jobs in more locations

What you'll do:

What you bring to the table:

What we can offer you:

Job seeker tools

Employer Tools

Browse

Stay Connected