Mississauga, On Full stack software engineer (mid) Jobs – 25 Openings This Week

Senior Full Stack Software Engineer
Kraft Heinz Company —Toronto, ON
- $96,200–$120,200 a year
- Azure
- SQL
- Presentation skills
- Designated paid holidays
- Paid time off
4d
Staff/Lead Python Engineer (FastAPI, Orchestration)
Mimica —Toronto, ON
- Full-time
- Remote
- English
- Software development
- Python
- Paid time off
- Flexible schedule
Senior Software Developer
TELUS —Toronto, ON
- $86,000–$136,000 a year
- Full-time
- Computer Science
- English
- Java
4d
Staff Back End Engineer (Applications)
Forma.ai —Toronto, ON
- Java
- Databases
- SQL
- Disability insurance
- Dental care
Quick apply
Senior Java Developer – Vice President
Citi —Mississauga, ON
- $120,800–$170,800 a year
- Full-time
- Hybrid work
- Azure
- Oracle
- Computer Science
Engineering Tech Lead
TTEC Digital —Toronto, ON
- Full-time
- Remote
- APIs
- AI
- Python
Quick apply
7d
Lead Full Stack Developer
Publicis Groupe Holdings B.V —Toronto, ON
- On call
- DevOps
- Java
- Databases
Quick apply
7d

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Staff/Lead Python Engineer (FastAPI, Orchestration)
Mimica —Toronto, ON
Fluency in English and ability to effectively communicate abstract ideas, complex concepts and trade-offs. Drive to continually develop your skills, improve…
Lead Full Stack Developer
Publicis Groupe Holdings B.V —Toronto, ON
Excellent communication: you can explain a complex architecture to a non-technical executive and disagree with a senior engineer respectfully and with evidence.
Quick apply
7d

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.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
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Senior Full Stack Software Engineer

Kraft Heinz Company -
Toronto, ON

Apply Now

Job details

$96,200–$120,200 a year
4 days ago

Qualifications

CI/CD
Azure
React
Test automation
SQL
Database design
Presentation skills
JavaScript
REST
APIs
Agile
TypeScript
Communication skills
Python

Full job description

Job Description

Senior Full Stack Software Engineer at a glance...

Location : Toronto, ON

Hybrid : 3 days/week

We’re hiring a Senior Full Stack Software Engineer to join one of our product engineering pods, building and evolving features end-to-end across frontend and backend systems. You’ll partner closely with product managers, designers, and other engineers to ship high-quality, reliable software that directly affects user experience and product outcomes. This role is hands-on and highly collaborative — the ability to communicate clearly, present technical decisions, and align cross-functional partners is as important as the code you write.

What's on the menu?

Product Development

Design and implement end-to-end product features across frontend and backend
Build responsive, performant user interfaces using React (TypeScript)
Develop scalable APIs and backend services using Python (FastAPI)
Translate product requirements into clean, maintainable code

System Design & Implementation

Contribute to application architecture and technical design decisions
Ensure code quality, performance, and scalability of services
Work with relational databases — data modeling, schema, and migrations
Integrate with internal and external APIs

Quality & Delivery

Write unit and integration tests to ensure reliability
Participate in code reviews and uphold engineering standards
Contribute to CI/CD workflows and deployment processes
Troubleshoot, debug, and resolve production issues

Collaboration & Communication

Partner with product managers and designers to refine requirements and shape solutions
Communicate technical trade-offs and risks clearly to both technical and non-technical stakeholders
Present technical designs, approaches, and post-mortems in team forums and reviews
Mentor junior and mid-level engineers; share knowledge across the pod

Recipe for Success - apply now if this sounds like you!

5+ years of experience in software engineering
Strong hands-on experience with:
JavaScript / TypeScript (React)
Python (FastAPI)
RESTful API design and backend development
SQL and database design
Experience building and shipping production-grade applications
Experience working with cloud platforms (Azure preferred)
Strong understanding of modern software engineering practices
Ability to work independently and take ownership in a product-focused team
Communication & Soft Skills:
Excellent written and verbal communication skills
Confident presenting technical concepts, trade-offs, and decisions to engineers, product managers, and senior stakeholders
Strong active-listening and stakeholder-management skills; able to navigate ambiguity and align partners around solutions
Comfortable giving and receiving constructive feedback in code reviews, design discussions, and retrospectives
Experience with automated testing and CI/CD pipelines preferred
Performance optimization experience preferred
Experience with observability tooling preferred
Experience working in Agile environments preferred

Our Total Rewards philosophy is to provide a meaningful and flexible spectrum of programs that equitably support our diverse workforce and their families and complement Kraft Heinz’ strategy and values.

New Hire Base Salary Range:

$96,200.00 - $120,200.00

Bonus: This position is eligible for a performance-based bonus as provided by the plan terms and governing documents.

The compensation offered will take into account internal equity and may vary depending on the candidate's geographic region, job-related knowledge, skills, and experience among other factors

Benefits: Coverage for employees (and their eligible dependents) through affordable access to healthcare, protection, and saving for the future, we offer plans tailored to meet you and your family’s needs. Coverage for benefits will be in accordance with the terms and conditions of the applicable plans and associated governing plan documents.

Wellbeing: We offer events, resources, and learning opportunities that inspire a physical, social, emotional, and financial well-being lifestyle for our employees and their families.

You’ll be able to participate in a variety of benefits and wellbeing programs that may vary by role, country, region, union status, and other employment status factors, for example:

Physical - Medical, Prescription Drug, Dental, Vision, Screenings/Assessments
Social - Paid Time Off, Company Holidays, Leave of Absence, Flexible Work Arrangements, Recognition, Training
Emotional – Employee Family Assistance Program, Wellbeing Programs, Family Support Programs

Location(s)

Toronto - Queen's Quay - Headquarters

Kraft Heinz is an Equal Opportunity Employer – Underrepresented Ethnic Minority Groups/Women/Veterans/Individuals with Disabilities/Sexual Orientation/Gender Identity and other protected classes. In order to ensure reasonable accommodation for protected individuals, applicants that require accommodation in the job application process may contact [email protected] for assistance.

Apply Now

Refine Your Search

full stack software engineer (mid) jobs in mississauga, on

Senior Full Stack Software Engineer

Staff/Lead Python Engineer (FastAPI, Orchestration)

Senior Software Developer

Staff Back End Engineer (Applications)

Senior Java Developer – Vice President

Engineering Tech Lead

Lead Full Stack Developer

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