Waterloo, On React developer Jobs – 29 Openings This Week

Software Engineer / Senior Software Engineer – Dot NET
SPAN Technology Services, Canada —Kitchener, ON
- $75,000–$100,000 a year
- Full-time
- Software troubleshooting
- SQL
- AWS
Quick apply
22h
Senior Software Developer , Application Framework
Verily —Waterloo, ON
- $146,500–$164,500 a year
- Full-time
- Computer Science
- Engineering
- Bachelor's
Senior Software Engineer, McMobile
Jobber —Kitchener-Waterloo, ON
- $125,800–$170,100 a year
- Full-time
- Hybrid work
- Communication skills
Full Stack Developer - DevOps & Cloud Systems
BrightOrder Inc. —Canada
- $95,000–$115,000 a year
- Full-time
- Remote
- Oracle
- DevOps
- Databases
- Dental care
- Vision care
Quick apply

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PART-TIME Complex Care Worker (Job ID: 26123189)
KW Habilitation —Kitchener-Waterloo, ON
Additional training and practical experience in assisting the assessment, implementation and evaluation of interventions for persons who have an intellectual…
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Full-Stack Web Developer
Payment in Motion Inc —Uxbridge, ON
Understanding of object-oriented programming and software design principles. Experience working with Microsoft Azure, or developing transaction-processing…
$65,811.27–$70,000.00 a year
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Junior Software Developer
Idea Notion Development Inc. —Markham, ON
Bachelor’s or Master’s degree in Computer Engineering, Computer Science, or a related field. You will also contribute to the development of our SaaS product…
$45,000–$80,000 a year
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Software Engineer / Senior Software Engineer – Dot NET

SPAN Technology Services, Canada
Kitchener, ON

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Job details

Permanent | Full-time
$75,000–$100,000 a year
22 hours ago

Qualifications

Performance tuning
Software engineering
ASP.NET Core
CSS
Software troubleshooting
React
RESTful API
.NET Core
C#
Microsoft SQL Server
NoSQL
Git
MongoDB
Data and database experience
xUnit
SQL
OOP
AWS
Docker
Bachelor's
PostgreSQL
Version control systems
Back-end development
Query optimization
Software development
React.js
Unit testing
Software development or architecture experience
Entity Framework
Software architecture
Debugging
HTML

Full job description

About SPAN Technology Services

SPAN Technology Services is an end-to-end product development company specializing in fintech solutions for the U.S. market. With three global development centres, we design, build, and scale platforms across retirement, tax, payroll, and compliance domains.

Our portfolio includes digital retirement platforms, tax filing systems, payroll integrations, and compliance automation tools serving thousands of businesses across North America. We are currently expanding our Canadian operations in Kitchener, ON.

Role Overview

Job Summary

We are looking for passionate .NET Developers with 3–6 years of experience in building scalable web applications and RESTful APIs. The ideal candidate should have strong fundamentals in C#, ASP.NET Core, databases, clean coding practices, and software design principles.

You will work alongside experienced engineers to design, develop, test, and deploy cloud-native applications used by customers across the United States.

Responsibilities

Design, develop, and maintain scalable applications using .NET Core / ASP.NET Core
Develop secure and high-performance REST APIs
Write clean, maintainable, and reusable code following SOLID principles
Design efficient database schemas and optimize SQL queries
Work with relational and NoSQL databases
Write comprehensive unit tests using xUnit or NUnit
Participate in code reviews and follow engineering best practices
Troubleshoot production issues and optimize application performance
Collaborate with Product, QA, DevOps, and Engineering teams
Contribute to CI/CD pipelines and deployment activities
Participate in architecture discussions and technical design reviews

Required Skills & Qualifications

Backend

C#
.NET Core / ASP.NET Core
ASP.NET Web API
RESTful API development
Dependency Injection
Entity Framework Core
LINQ
Authentication & Authorization (JWT/OAuth basics)

Frontend

HTML5
CSS3
JavaScript (ES6+)
React Experience is a plus

Databases

Experience with one or more:

Microsoft SQL Server
PostgreSQL
MongoDB

Should have knowledge of:

Query optimization
Stored Procedures
Indexing
Transactions
Database normalization

Software Engineering

Object-Oriented Programming (OOP)
SOLID Principles
Clean Code Practices
N-Tier Architecture
Design Patterns (Repository, Factory, Strategy, etc.)
Exception Handling & Logging
Unit Testing (xUnit/NUnit)
Debugging & Performance Optimization

Version Control

Git
Git branching strategies
Pull Requests & Code Reviews

Join us to be part of a forward-thinking team where your skills will directly impact innovative projects! We value energetic professionals who thrive in collaborative settings and are eager to develop scalable web applications that make a difference.

Application contact: [email protected]

Pay: $75,000.00-$100,000.00 per year

Work Location: In person

Quick apply

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react developer jobs in waterloo, on

Software Engineer / Senior Software Engineer – Dot NET

Senior Software Developer , Application Framework

Senior Software Engineer, McMobile

Full Stack Developer - DevOps & Cloud Systems

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