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Smart Contract Developer Jobs in Ontario (NOW HIRING)

Hatch

Instrument & Control Engineering

Mississauga, ON · On-site

CA$86K - CA$135K/yr

Following the award of contracts and purchase orders as instructed, monitor the fabrication and ... Smart Plant Electrical, Smart Plant Instrumentation. * Recent AutoCAD and MicroStation experience.

Hatch

Instrument & Control Engineering

Mississauga, ON · On-site

CA$86K - CA$135K/yr

Following the award of contracts and purchase orders as instructed, monitor the fabrication and ... Smart Plant Electrical, Smart Plant Instrumentation. * Recent AutoCAD and MicroStation experience.

GlaxoSmithKline

Quality Leader (Contract)

Mississauga, ON · On-site

$98 - $148/hr

... of smart manufacturing technologies including robotics, digital solutions and artificial ... Bachelor of Science or Engineering or equivalent. * 5 years' experience in the pharmaceutical ...

New

Hatch

Controls & Automation Engineer - Sudbury

Sudbury, ON · On-site

CA$86K - CA$135K/yr

Following the award of contracts and purchase orders as instructed, monitor the fabrication and ... Smart Plant Electrical, Smart Plant Instrumentation. * Recent AutoCAD and MicroStation experience.

Hatch

Controls & Automation Engineer - Sudbury

Sudbury, ON · On-site

CA$86K - CA$135K/yr

Following the award of contracts and purchase orders as instructed, monitor the fabrication and ... Smart Plant Electrical, Smart Plant Instrumentation. * Recent AutoCAD and MicroStation experience.

CRG Group

Junior Mechanical Engineer

Tiverton, ON

Our Client Bruce Power is looking for a Smart Signal Junior Mechanical Engineer to work on a long-term contract at the Bruce Power site located in Tiverton, Ontario. A valid security clearance for ...

Ameresco

Junior Engineer

Richmond Hill, ON · On-site

At Ameresco, we show the way by developing, constructing and operating tailored smart energy ... Compilation of tender documents and issuance of contract packages. * Reporting to direct supervisor ...

Source Code

RQ00682 - 2 x Sr. Test Lead

Toronto, ON

RQ00682 - 2 x Sr. Test Lead 2 openings 6-month contract (126 business days) - possible extension ... Chaos Engineering / Cloud Resiliency Testing: Familiarity with using tools like AWS Fault Injection ...

CCC

Industrial Control Technician

Colborne, ON

CA$90K - CA$110K/yr

The successful candidate will be responsible for leading projects to integrate various smart ... HMI programming and troubleshooting using FactoryTalk View Studio software. * Use of VFD software ...

Hydro Ottawa

Project Engineer

Ottawa, ON

... to a smart energy future. Are you ready to make a difference in our community? JOB SUMMARY The ... Facilitate the procurement of major station equipment and work with Standards to prepare contract ...

Xylem

Regional Services Manager - Canada

Sudbury, ON

  • Medical

  • Dental

  • Vision

  • PTO

The successful candidate will oversee the successful execution of AMI, Smart Grid, and utility ... Lead, mentor, and develop a regional team of Project Managers and Application Engineers across ...

Xylem

Regional Services Manager - Canada

Mississauga, ON · On-site

  • Medical

  • Dental

  • Vision

  • PTO

The successful candidate will oversee the successful execution of AMI, Smart Grid, and utility ... Lead, mentor, and develop a regional team of Project Managers and Application Engineers across ...

Xylem

Regional Services Manager - Canada

Aurora, ON · On-site

  • Medical

  • Dental

  • Vision

  • PTO

The successful candidate will oversee the successful execution of AMI, Smart Grid, and utility ... Lead, mentor, and develop a regional team of Project Managers and Application Engineers across ...

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Showing results 21-40

All JobsSmart Contract Developer JobsSmart Contract Developer Jobs in Ontario

Smart Contract Developer information

What is a smart contract developer?

Smart Contract Developers are professionals who design, write, and deploy self-executing contracts on blockchain platforms such as Ethereum. These contracts encode rules and agreements into code, enabling automated and trustless transactions between parties. Smart Contract Developers are skilled in blockchain technologies and programming languages like Solidity, and they ensure that contracts are secure, efficient, and function as intended. They often work with decentralized applications (dApps) and participate in the broader ecosystem of blockchain development.

What are some common challenges smart contract developers face when working on blockchain projects?

Smart Contract Developers often encounter challenges such as ensuring code security, avoiding vulnerabilities like reentrancy attacks, and dealing with the immutability of deployed contracts, which makes fixing bugs post-deployment difficult. Additionally, they must stay updated on rapidly evolving blockchain frameworks and tools, and work closely with auditors and project managers to ensure compliance and correctness. Collaborating with front-end and back-end developers is also key, as smart contracts often form the backbone of decentralized applications requiring seamless integration.

What are the key skills and qualifications needed to thrive as a smart contract developer, and why are they important?

To thrive as a Smart Contract Developer, you need a strong grasp of blockchain fundamentals, proficiency in programming languages like Solidity or Vyper, and experience with decentralized application (dApp) development. Familiarity with tools such as Truffle, Hardhat, Remix, and knowledge of smart contract auditing and security best practices is essential. Analytical thinking, attention to detail, and strong problem-solving skills are critical soft skills for this role. These abilities ensure the creation of secure, efficient, and reliable smart contracts that underpin trustworthy decentralized systems.

What is the difference between Smart Contract Developer vs Blockchain Developer?

AspectSmart Contract DeveloperBlockchain Developer
CredentialsKnowledge of Solidity, Ethereum, smart contract securityKnowledge of blockchain protocols, cryptography, and development tools
Work EnvironmentFocus on writing, testing, and deploying smart contracts on blockchain platformsDevelops entire blockchain applications, including smart contracts and decentralized apps
Industry UsagePrimarily in DeFi, NFT, and blockchain-specific projectsBroader blockchain solutions, including infrastructure and application development

While both roles work within the blockchain industry, a Smart Contract Developer specializes in creating and securing smart contracts, whereas a Blockchain Developer has a broader scope, including building entire blockchain systems and applications.

What job categories do people searching Smart Contract Developer jobs in Ontario look for?

The top searched job categories for Smart Contract Developer jobs in Ontario are:

What cities in Ontario are hiring for Smart Contract Developer jobs?

Cities in Ontario with the most Smart Contract Developer job openings:

Smart Contract Developer jobs near you
Infographic showing various Smart Contract Developer job openings in Ontario as of August 2026, with employment types broken down into 2% As Needed, 66% Full Time, 29% Part Time, 1% Temporary, and 2% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

Full-Stack Engineer (Contract - Part-Time)

mello

Toronto, ON • On-site, Remote

$100K - $150K/yr

Contractor

Re-posted 21 days ago

Job description

About Us

mello is a Y Combinator (S21) backed start-up that integrates wellbeing into every employees' workflow in order to unlock their full potential. We are paving the path for the future of work. Our vision is to help every remote team on the planet to work healthier, more sustainably, and learn how to stay mello instead of burning out.

As second time founders, we burnt out building our last company during the pandemic. We wanted a simple, easy-to-use solution that integrates right into our workflow to increase our wellbeing but couldn't find anything on the market so we decided to build the solution we would've liked to use ourselves (aka, eating your own dog food).

At mello, we're building the new standard that remote and hybrid companies use to track, measure and act on burnout to inspire happier, healthier, more motivated teams. mello suggests smart actions for both employees, managers as well as HR to take to increase wellbeing, productivity and retention.

About this Role

As a modern Full-Stack Engineer, you are well versed in all aspects of development from a transistor to a website, including the browser, OS, CPU, RAM, architecture and everything. Here in mello we are much, mello-er, in requirements:

  • You will be responsible for both front end UI elements and experiences, as well as integrating, and maintaining / modifying backend services as required. The split is expected to be 63.5 / 37.5[1]
  • You will ensure the app can scale from 1000 to a million users
  • You will contribute and define our engineering values, process, and deployment cacadence, with scalability and security in mind.

Technical Skills you have:

  • IAM / OAuth (e.g. AWS Cognito, Okta)
  • Frontend frameworks i.e. React.js (Hooks preferred), Vue.js
  • In-depth CSS knowledge i.e. SCSS, Sass
  • 3rd party integrations experience with OAuth, SDK (i.e. AWS SDK), and API backend (BFF)
  • Develop, improve, and fix custom API backend as required
  • SPA Cloud deployment i.e. AWS S3 / Amplify, Netlify, Firebase a plus
  • Experience with Database ORB a plus

What you'll be doing

  • Experience with modern Front end frameworks e.g. React.js (Hooks), Vue.js and Gatsby. Familiarity with analytics is a plus.
  • Experience with OAuth flows and implementation / integration with 3rd party service
  • Experience with Front end deployment services e.g. AWS Amplify, Netlify, firebase
  • Experience with different data fetching / caching strategy and design tradeoffs, principles, and practices to help guide the team's technical direction
  • Experience with Test Driven Development and proficiency with a testing framework e.g. Jest
  • Experience with API integration as well as development. No stranger when comes to resolving CORS related nonsense
  • Experience with Database is a plus.
  • A strong desire to build secure software and protect user information.

Who you are

  • You are excited about our mission: unlocking human potential via wellbeing and the Future of Work
  • You are excited about joining a early-stage growth start-up
  • You have a growth-mindset
  • You don't mind learning a bit of everything outside engineering
  • You deeply care about UX/Design and won't compromise on quality
  • You ask "yes, and?" and are extremely collaborative
  • You're curious about how our UX Designers/Researchers conduct their work and how your work flows into theirs
  • You're proactive, a problem solver and go-getter
  • You're collaborative and are a team player
  • You're curious and self-motivated
  • You knows how to take and give direction
  • You can adapt to change quickly

Job Type: Contract (Part-Time)

Number of Hours: Up to 30hrs/week

Pay (USD): $100k - $150k

Education:

  • Bachelor's in Computer Science (Preferred)

Experience:

  • Full Stack Development: 2 years (Required)
  • DevOps: 1 years (Preferred)
Employment Type: CONTRACTOR

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