13,359+ Senior Full Stack Engineer Nodejs React Jobs in St. Catharines, Canada — Local Employers Hiring June 2026

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Senior Golang & React Full Stack Engineer Remote (Canada)

A forward-thinking consulting firm in Canada seeks a Senior Full Stack Software Developer specializing in Golang and React. This permanent position offers 100% remote work within Canada. Ideal candidates will have over 9 years of experience in software development, encompassing both back-end and front-end techno ...

Senior Golang & React Full Stack Engineer Remote (Canada)

A forward-thinking consulting firm in Canada seeks a Senior Full Stack Software Developer specializing in Golang and React. This permanent position offers 100% remote work within Canada. Ideal candidates will have over 9 years of experience in software development, encompassing both back-end and front-end techno ...

Senior Golang & React Full Stack Engineer Remote (Canada)

A forward-thinking consulting firm in Canada seeks a Senior Full Stack Software Developer specializing in Golang and React. This permanent position offers 100% remote work within Canada. Ideal candidates will have over 9 years of experience in software development, encompassing both back-end and front-end techno ...

Senior Full Stack Software Developer (Golang et React)

Senior Full Stack Software Developer (Golang & React) 4 weeks ago Be among the first 25 applicants Our client is an innovative, forward‑thinking company that provides technical consulting, design, and programming services for show control and the entertainment industry. Since 2015, the co ...

Senior Full Stack Software Developer (Golang et React)

Senior Full Stack Software Developer (Golang & React) 4 weeks ago Be among the first 25 applicants Our client is an innovative, forward‑thinking company that provides technical consulting, design, and programming services for show control and the entertainment industry. Since 2015, the co ...

Senior Software Engineer, Full Stack (Trust & Safety)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.Trust & Safety Experience owns the customer journeys during authentication, verification, and fraud journeys. You will work as a fu ...

Senior Full Stack Engineer, Trust & Safety (Remote)

A technology firm is seeking a Full Stack Engineer to lead engineering teams through project ambiguity and ensure high-quality deliveries. You will design and develop backend systems while collaborating closely with product management. The ideal candidate has over 4 years of software engineering experience, prof ...

Software Engineer II Full Stack Role

Unlock your potential with Affirm as a Software Engineer II focused on Full-Stack solutions for Marketplace Performance. You’ll help streamline the customer journey, making shopping easy and transparent.This role requires over 1.5 years of experience in software engineering, where you will develop and ...

Senior Full Stack Developer at NetBenefit

Drive software innovation at NetBenefit as a Senior Full-Stack Developer. Utilize your expertise in React and Node.js to create impactful solutions in a hybrid work environment.NetBenefit Software is seeking a skilled developer to join their growing team. This role requires extensive full-stack experie ...

Software Engineer II, Full Stack (Marketplace Performance)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Marketplace Performance team in the Direct to Consumer org builds the discovery platforms behind Affirm’s deals feed, affiliates, paymen ...

Backend/Full‑Stack Engineer – Remote, Impact‑Driven

A pioneering financial technology company is seeking a Full Stack Developer to enhance user experiences using React Native, Python, and Kotlin. You will work closely with product, engineering, and design teams to create innovative solutions. The ideal candidate has over two years of experience, a focus on user-f ...

Software Engineer II, Full Stack (Card Acquisition)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The Card Acquisition team is critical in bringing our exciting product vision to life. Like any other financial company, our first impressio ...

Full Stack Application Developer (Automation)

Full Stack Application Developer (Automation) Buckland Global Trade, 73 Gaylord Rd., St. Thomas, Ontario, Canada Job Description Posted Tuesday, May 19, 2026 at 4:00 AM Who we are For over 70 years Buckland has been working to help companies across the wo ...

Full Stack Application Developer (Automation)

Full Stack Application Developer (Automation) Buckland Global Trade, 73 Gaylord Rd., St. Thomas, Ontario, Canada • Canada Job Description Posted Tuesday, May 19, 2026 at 4:00 AM Who we are For over 70 years Buckland has been working to help compan ...

AI Agentic Developer

About the Company Headquartered in California, U.S.A., GSPANN is a leading provider of consulting and IT services to global clients. We specialize in helping clients transform their IT capabilities, optimize business practices, and drive operational efficiency across industries such as retail, ...

Full Stack Developer for Automation at Buckland

Buckland Global Trade is seeking a Full Stack Application Developer (Automation) to enhance enterprise applications using cloud technologies. Ideal for skilled developers passionate about Agile environments and creating scalable solutions.The Full Stack Developer role at Buckland involves designing and maint ...

Software Engineer, Frontend

Role Type: Permanent Job Title: Senior Software Engineer, Frontend Salary: $150,000-$200,000 + equity Location : Remote Your New Company Join a high-growth, product-driven technology company transforming the healthcare space ...

Full Time DevOps Engineer Position

Join our team as a DevOps Engineer, leveraging your skills in automation and delivery. This full-time role offers a salary range of $100K to $120K.We are actively seeking a motivated individual to fill the DevOps Engineer role in our innovative team. You will design and maintain continuous integration and de ...

Full Time DevOps Engineer Position

Join our team as a DevOps Engineer, leveraging your skills in automation and delivery. This full-time role offers a salary range of $100K to $120K. We are actively seeking a motivated individual to fill the DevOps Engineer role in our innovative team. You will design and maintain continuous integrat ...

Senior Software Developer

Company Overview NetBenefit Software provides solutions that allow organizations to track their socioeconomic impact and move important projects forward. NetBenefit is a fast‑moving tech company with strong corporate values of fairness, trust, and transparency. Embracing challenges, a results‑based culture, and ...

Web Engineering Senior Staff Engineer

Become a key player in web engineering at Affirm as a Senior Staff Engineer. Focus on infrastructure, strategy, and AI to streamline operations remotely.In this critical role, you will manage web platform systems for Affirm's expansive user base. Your 10+ years of experience will allow you to architect ...

Senior Software Engineer

Experience Level: Expert (15+ years or niche expertise) Role Description We are looking for a Senior Software Developer to support the Cyber Security portfolio within Cyber Data Risk & Resilience (CDRR). The consultant will contribute to the design, deve ...

Senior Electrical Engineer

Our company is at the forefront of innovative hydrogen, biogas and RNG projects, and we are looking for someone who possesses both technical expertise and a passion for sustainability. You will have the opportunity to lead and contribute to projects that make a tangible difference in our world, while provi ...

Senior Electrical Engineer

Our company is at the forefront of innovative hydrogen, biogas and RNG projects, and we are looking for someone who possesses both technical expertise and a passion for sustainability. You will have the opportunity to lead and contribute to projects that make a tangible difference in our world, while providing e ...

Senior Mechanical Engineer

itec group has partnered with a Niagara based client in the search for a Senior Mechanical Engineer You’ll lead the design and development of complex pressure vessel systems in a growing, engineering-driven environment. You’ll play a key role in ensuring code compliance, s ...

Senior Electrical Engineer

Our company is at the forefront of innovative hydrogen, biogas and RNG projects, and we are looking for someone who possesses both technical expertise and a passion for sustainability. You will have the opportunity to lead and contribute to projects that make a tangible difference in our world, while provi ...

Senior Mechanical Engineer

itec group has partnered with a Niagara based client in the search for a Senior Mechanical Engineer You’ll lead the design and development of complex pressure vessel systems in a growing, engineering-driven environment. You’ll play a key role in ensuring code compliance, supporting ...

Senior Data Engineer

Our engineers are the technical visionaries driving our innovative solutions. Renowned globally for designing, integrating, and delivering state-of-the-art simulation and training systems, you’ll tackle complex challenges, collaborate across functions, and lead advancements that shape the future of our i ...

Senior Electrical Engineer

We are seeking a highly experienced Senior Electrical Engineer to join our client’s dynamic engineering team close to London, ON . Pay - $100K - $130K Key Responsibilities Lead electrical engineering design for new and existing construction projects (HVAC coor ...

Senior Civil Engineer

OverviewWe are seeking a Senior Civil Engineer to join our Municipal Engineering team, based in either our Newfoundland and Labrador or Nova Scotia offices. This role offers the opportunity to work on meaningful infrastructure projects that directly impact the communities we serve. Your roleL ...

Senior DevOps Engineer

# Senior DevOps EngineerOptional Work from Home•Canadian Headquarters - St Johns, NL A1C 6C9## OverviewSalary Range$95,000.00 - $125,000.00 Salary/yearPosition TypeFull TimeTravel PercentageNoneCategoryEngineering## Description---Senior DevOps Engineer**What We Seek**We are looking for a Seni ...

Senior Electrical Engineer

We are seeking a highly experienced Senior Electrical Engineer to join our client’s dynamic engineering team close to London, ON . Pay - $100K - $130K Key Responsibilities Lead electrical engineering design for new and existing construction projects (HVAC coor ...

Senior Electrical Engineer

Build your career with Kraken Robotics. Make a difference to others. If innovation drives you, and you want a career that makes a difference to the world, helping humanity overcome the challenges in our oceans – safely, efficiently, and sustainably –then come join us at Kraken Robotics.Kraken ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year, plus bonus and benefits About Centerra Gold Headquartered in Toro ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year , plus bonus and benefits ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year , plus bonus and benefits ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year, plus bonus and benefits About Centerra Gold Headquartered in Toro ...

Senior Reliability Engineer

About Centerra Gold Headquartered in Toronto, Centerra Gold (TSX: CG) is one of the leading North American gold and copper producers engaged in the operation, exploration, development, and acquisition in Asia, North America, and other markets worldwide. Centerra’s vision is to build a team‑based ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year, plus bonus and benefits About Centerra Gold Headquartered ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year , plus bonus and b ...

Senior Reliability Engineer

About Centerra Gold Headquartered in Toronto, Centerra Gold (TSX: CG) is one of the leading North American gold and copper producers engaged in the operation, exploration, development, and acquisition in Asia, North America, and other markets worldwide. Centerra’s vision is to build a team‑based ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year, plus bonus and benefits About Centerra Gold Headquartered in Toro ...

Senior Engineer, Mine

Become a valuable addition to Centerra's Mount Milligan Mine Operations team Boost your career by joining an established organization Receive a competitive wage of $117,300 – $157,900 per year , plus bonus and benefits ...

Senior Project Engineer, Transportation

Your difference is the difference. Do you love to develop and share great ideas? Do you believe your insights can drive people forward? Do you appreciate working with others and building on mutual successes? Perfect. We do too. As an employee‑owned company, we foster a culture where our people can ...

Senior/ Lead AI Engineer

The Opportunity “As a Senior Engineer on our Applied AI team, you will be at the forefront of building AI-powered software that transforms how our platform operates. You will design, build, and maintain production-grade applications and agentic systems — leveraging LLMs, agent SDKs, ...

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