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Added 5 mins ago
Analyste/ingénieur principal ou principale en cybersécurité OT
Alithya
Pickering, ON
Full-time
Mentor and coach junior and intermediate staff and review their deliverables when conducting Alithya Cyber Security Services;
Added 5 mins ago
Intermediate Engineer, Automation, and Project Leader
BBA Consultants
Montreal, QC
Full-time
Added 5 mins ago
Intermediate Engineer, Automation, and Project Leader
BBA Consultants
Mont-Saint-Hilaire, QC · Mont-St-Hilaire, QC
Full-time
Added 19 mins ago
Clinical Research Coordinator - Regulatory
RI-MUHC | Research Institute of the MUHC | #rimuhc
Montreal, QC
Full-time
An intermediate knowledge of oral and written English is required, as the position requires regular and complex contact with patients, researchers or international students who are…
Added 19 mins ago
Clinical Research Coordinator
RI-MUHC | Research Institute of the MUHC | #rimuhc
Montreal, QC
Full-time
An intermediate knowledge of oral and written English is required, as the position requires regular and complex contact with patients, researchers or international students who are…
Added 34 mins ago
Auditor Intermediate
Minnesota Direct Care and Treatment
Saint-Paul, NB · St.-Paul, NB
Full-time
Working Title & Job Class: Auditor Intermediate
Added 34 mins ago
Junior Interior Designer
BGIS
Ottawa, ON
Full-time
The Intermediate Interior Designer works with internal BGIS staff as well as client and external consultants, as required, to ensure timely, successful implementation of TFMS Services and…
Added 50 mins ago
Outreach Coordinator
York University
Toronto, ON
Contract
Intermediate MS Office (Word, Excel, PowerPoint, Outlook).
Added 50 mins ago
RPA Business Systems Analyst
Tata Consultancy Services
Toronto, ON
$90,000 to $110,000 CAD / year
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Intern – Developer
iA Financial Group (Industrial Alliance)
Quebec, QC
Internship
…feel confident and secure about their future? As an Intern – Developer, you will play a key role in the analysis, development, integration, and quality assurance of our technological…
Added 50 mins ago
Customer Service Representative
EMCO Corporation
Edmonton, AB
$40,000 to $50,000 CAD / year
Full-time
Added 1 hour ago
Senior Geologist, Geotechnical
Glencore
Sparwood, BC
$123,000 to $145,000 CAD / year
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Training and mentoring of personnel including co-op students, new graduates and junior to intermediate engineers and geoscientists
Added 1 hour ago
Design Consultant
King Living
AB · Edmonton, AB
Full-time
Basic to intermediate computer skills, including data entry
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Intern – Associate, Investment Products and Platforms
iA Financial Group (Industrial Alliance)
Toronto, ON
$23.5 to $29.5 CAD / hour
Internship
Has intermediate to advanced knowledge of commonly used tools, including Excel and Bloomberg, and is comfortable using Copilot;
Added 1 hour ago
Intermediate/Senior Legal Administrative Assistant (Litigation)
BC Legal Management Association
Vancouver, BC
Other
Lawson Lundell LLP is currently seeking a competent and knowledgeable intermediate/senior Legal Administrative Assistant to join our commercial litigation group, in our Vancouver office, on…
Added 1 hour ago
Developer (Full Stack), Senior
MissionPerform
Mississauga, ON
$80,000 to $130,000 CAD / year
Set technical direction and raise the bar on code quality by leading design/code reviews, mentoring intermediate and junior developers, and championing best practices across the codebase.
Added 1 hour ago
Validation Analyst 2
PCI Pharma Services
Vancouver, BC
Full-time
The Validation Analyst II is responsible for overall validation project management of intermediate customer accounts under moderate supervision. Responsible for generation and execution of…
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Customer Service Representative
Emco Corporation: Plumbing, HVAC, Waterworks, Industrial, Irrigation, Fire Protection
AB · Edmonton, AB
$40,000 to $50,000 CAD / year
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Senior Analyst, Technology Innovation (T & I) (Telework/Hybrid)
CBC/Radio-Canada
Montreal, QC
Full-time
English (Reading - C - Advanced), English (Speaking - C - Advanced), English (Writing - B - Intermediate), French (Reading - C - Advanced), French (Speaking - C - Advanced), French (Writing…
Added 1 hour ago
C# Senior Developer - OTT Team (French Services) (Telework/Hybrid)
CBC/Radio-Canada
Montreal, QC
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English (Reading - B - Intermediate), English (Speaking - B - Intermediate), English (Writing - B - Intermediate), French (Reading - C - Advanced), French (Speaking - C - Advanced), French…
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Javascript Senior Developer - OTT Team (French Services) (Telework/Hybrid)
CBC/Radio-Canada
Montreal, QC
Full-time
English (Reading - B - Intermediate), English (Speaking - B - Intermediate), English (Writing - B - Intermediate), French (Reading - C - Advanced), French (Speaking - C - Advanced), French…
Added 1 hour ago
Technical Director – Geotechnical, Dams & Tailings
GHD Group Pty Ltd
Vancouver, BC
Mentor and develop junior and intermediate engineers and contribute to the continued development of GHD’s technical capability.
Added 1 hour ago
Senior Civil/Environmental Engineer -Hazardous Materials
AECOM
AB · Edmonton, Alberta
$128,000 to $165,000 CAD / year
Full-time
Collaborating with junior and intermediate staff on client, co-worker, sub-contractor and sub-consultant communication and management
Added 2 hours ago
UX Designer - Intermediate
isgSearch
Toronto, ON · Greater Toronto Area, Canada
Contract
Added 2 hours ago
Distribution Center Merchandise Controller
TJX Canada – Winners, Marshalls, HomeSense
Brampton, ON
$44,197.5 to $61,876.5 CAD / year
Full-time
Intermediate computer proficiency, including word processing, email, and mainframe systems such as IMSP and SCAN; able to build productive working relationships with Distribution Services,…

MissionPerform

Developer (Full Stack), Senior

Mississauga, ON, Canada

Pay: $80,000 to $130,000 CAD / year
Experience: 5+ years of experience as a Full Stack Web Developer, with deep, hands-on production experience in the MERN stack .
Posting language: English
Posted: Sep 16, 2026

Apply About employer

Applications open in a new tab.

Original job description

Details

This position follows a hybrid work model, with an expectation of in-office attendance three days each week. The expected compensation range for this position is posted below and is based on experience, skills, and qualifications. The upper end of this range is reserved for exceptional, top-tier candidates. We use automated tools, including artificial intelligence, to assist in the evaluation of applications. We may conduct background checks for successful candidates.

What's In It for You

Direct impact: your architectural decisions and code ship to real users solving real business problems, not stuck in a backlog behind bureaucracy.

Direct access: regular, unfiltered collaboration with senior consultants, executives, and clients. You'll help shape technical strategy, not just receive tickets.

Ownership: significant influence over architecture, technical direction, and engineering practices on a growing product, with room to grow your scope as we grow.

Variety: exposure to consulting-driven, client-facing work in addition to product engineering, offering a broader experience than a typical single-product engineering role.

A startup pace: agility, autonomy, and the chance to make a visible mark rather than being one voice among hundreds.

What You'll Do

Own the design and delivery of complex full stack features of our React Native + MERN stack mobile and web applications, from data model and architecture through to polished UI, exercising sound technical judgment with minimal oversight.
Work directly with consultants, executives, and client stakeholders to shape technical solutions to real operational problems, and communicate tradeoffs clearly to non-technical audiences.

Set technical direction and raise the bar on code quality by leading design/code reviews, mentoring intermediate and junior developers, and championing best practices across the codebase.

Diagnose and resolve complex performance bottlenecks, production issues, and architectural risks before they impact users, balancing shipping speed with long-term maintainability.

Move fast and adapt. Startup environment means your role will stretch beyond a narrow job description, and everyone's contribution is visible.

Qualifications

5+ years of experience as a Full Stack Web Developer, with deep, hands-on production experience in the MERN stack .

Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.

Expert working knowledge in JavaScript, React (including Redux or Redux Toolkit for state management), and modern front-end practices for building and scaling large applications.

Expert working knowledge with Node.js and Express, including designing and building RESTful APIs and service architecture.

Expert working knowledge with MongoDB and an ODM such as Mongoose (schema design, query optimization, indexing) at scale.

Expert working knowledge writing and championing unit, integration (e.g. Jest, Testing Library, or similar), and UI tests (e.g. Selenium, Playwright, or similar).

Strong track record with Git-based version control and collaborative workflows (branching, pull requests, code review), including setting review standards for a team.

Strong problem-solving skills, sound architectural judgment, and the ability to work independently in a fast-paced, ambiguous environment.

Strong working knowledge using AI tools (e.g. GitHub Copilot, Claude, Cursor) to accelerate development, review code, and improve team productivity.

Strong working knowledge with Redis, caching strategies, or session/state management at scale.

Strong experience mentoring other developers and influencing technical direction or architecture decisions.

Experience in an Agile (Scrum / Kanban) development environment, including helping shape process for a team.

Familiar with Mobile development using React Native.

Excellent written and verbal communication skills, comfortable speaking directly with consultants, executives, and clients.

Preferred Qualifications

Experience with AWS or another major cloud provider (Azure, GCP), including infrastructure/architecture decisions.

Experience with real-time features using Socket.IO or similar WebSocket technology.

Experience with UI component libraries (e.g. RSuite, Material UI, or similar) and charting/visualization libraries (e.g. Chart.js, D3.js).

Experience integrating third-party or AI APIs (e.g. OpenAI, Anthropic) into production applications.

Experience owning or building CI/CD pipelines and build tooling.

Prior experience in a startup, consulting, or client-facing environment.

Familiarity with continuous improvement frameworks such as Lean Six Sigma, Continuous Process Improvement (CPI), Business Process Management (BPM), Operational Excellence (OpEx).

Prior experience as a technical lead, or interest in growing into a formal technical leadership role.

How You'll Succeed

You write clean, maintainable code and hold your team to the same standard through thoughtful code review.

You take ownership of architecture and features from design through deployment and production support.

You balance shipping speed with code quality and long-term architectural soundness.

You identify and solve complex performance bottlenecks and technical risks before they impact users.

You mentor and elevate the developers around you, and collaborate effectively directly with consultants, execs, and clients.

You demonstrate sound judgment, strong problem-solving skills, and attention to detail in everything you touch.

Benefits

Life, health, dental, vision, and more coverage.

Performance-based bonus program tied to both individual and company performance.

Apply About employer

More about this job

Responsibilities

You will own the design and delivery of complex full-stack features for mobile and web applications while collaborating with stakeholders to shape technical solutions. Additionally, you will lead code reviews, mentor junior developers, and champion best practices to ensure high-quality, maintainable code.

Requirements

Candidates must have 5+ years of experience in full-stack development with deep expertise in the MERN stack and React Native. A bachelor's degree in a relevant field or equivalent practical experience is required, along with strong communication skills and experience in an Agile environment.

Skills

Full stack development
React native
MERN stack
JavaScript
React
Node.js
Express
MongoDB
RESTful APIs
Unit testing
Integration testing
Git
AI tools
Redis
Mentoring
Agile

Benefits

Life insurance
Health insurance
Dental insurance
Vision insurance
Performance-based bonus

Visa sponsorship

Not detected in the job text

Keywords

Full stack
React Native
MERN
JavaScript
React
Redux
Node.js
Express
MongoDB
Mongoose
RESTful APIs
Jest
Testing Library
Selenium
Playwright
Git
GitHub Copilot
Claude
Cursor
Redis
Agile
Scrum
Kanban
AWS
Socket.IO
Material UI
D3.js
CI/CD
Lean Six Sigma
BPM

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