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Java Developer Startup Jobs in Ontario (NOW HIRING)

About the Role We are an innovative startup seeking a highly skilled and adaptable Senior Java Developer to join our dynamic team. In addition to developing robust and scalable software solutions ...

\n \n \n \n \n Java\/Fullstack Engineer required for a startup in Waterford who are expanding the dev team and hoping to almost double their headcount this year. \n \n \n * You'll get the chance to ...

Java Developer

Toronto, ON · Hybrid

CA$100K - CA$120K/yr

Software Developer (Java) This role is eligible for our hybrid work model: Two days in-office. Our ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

Java Developer

Toronto, ON · Hybrid

CA$100K - CA$120K/yr

Software Developer (Java) This role is eligible for our hybrid work model: Two days in-office. Our ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

Associate Java Developer

Toronto, ON · Hybrid

CA$85K - CA$100K/yr

Associate Software Developer - Java This role is eligible for our hybrid work model: Two days in ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

Associate Java Developer

Toronto, ON · Hybrid

CA$85K - CA$100K/yr

Associate Software Developer - Java This role is eligible for our hybrid work model: Two days in ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

... n * 5+ years' Java Development experience \n * Cloud experience \n * An interest in Machine ... Experience working in a startup would be an advantage \n * Experienced writing complex queries \n

Java Backend Developer

Etobicoke, ON · Hybrid

CA$100K - CA$135K/yr

If you're a self-starter looking to hone your skills in a startup environment that fosters ... As a Java Back-End Developer at Localcoin, you will be responsible for developing and maintaining ...

Software Developer

Toronto, ON · Hybrid

CA$100K - CA$120K/yr

Java Developer This role is eligible for our hybrid work model: Two days in-office. Our Technology ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

Software Developer

Toronto, ON · Hybrid

CA$100K - CA$120K/yr

Java Developer Our Technology team is the backbone of our company: constantly creating, testing ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

Software Developer

Toronto, ON · Hybrid

CA$100K - CA$120K/yr

Java Developer This role is eligible for our hybrid work model: Two days in-office. Our Technology ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

Software Developer

Toronto, ON · Hybrid

CA$100K - CA$120K/yr

Java Developer Our Technology team is the backbone of our company: constantly creating, testing ... We're a grown-up, startup. We deliver the excitement of a new venture, without the struggles and ...

We are small, but fast-growing startup, building custom blockchain-based digital identity and ... or Java/J2EE. Knowledge of JS frameworks is a plus. Good hands on knowledge of web technologies ...

Design, develop, and maintain high-quality Java services and APIs. * Translate product requirements ... Experience in a startup environment or a high-pressure, fast-paced workplace. * Familiarity with ...

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Showing results 1-20

Java Developer Startup information

See Ontario salary details

$35.5K

$127.9K

$173K

How much do java developer startup jobs pay per year?

As of May 29, 2026, the average yearly pay for java developer startup in Ontario is $127,888.00, according to ZipRecruiter salary data. Most workers in this role earn between $98,000.00 and $156,000.00 per year, depending on experience, location, and employer.

What is a Java Developer Startup job?

A Java Developer Startup job involves designing, developing, and maintaining Java-based applications in a fast-paced startup environment. Developers work on scalable solutions, collaborate with cross-functional teams, and adapt to evolving product requirements. Unlike corporate roles, startup jobs often require versatility, problem-solving skills, and the ability to work with limited resources.

What are the key skills and qualifications needed to thrive in the Java Developer Startup position, and why are they important?

A successful Java Developer in a startup environment should have strong proficiency in Java, object-oriented programming principles, and experience with frameworks like Spring or Hibernate, often backed by a degree in computer science or a related field. Familiarity with version control systems (like Git), CI/CD pipelines, and cloud platforms is highly valued, and industry certifications such as Oracle Certified Professional can be advantageous. Soft skills like adaptability, proactive problem-solving, and clear communication help developers collaborate in small, fast-paced teams. These competencies are essential for quickly delivering high-quality software and driving innovation in the dynamic startup landscape.

What kind of work environment and team structure can I expect as a Java Developer in a startup?

As a Java Developer in a startup, you'll typically work in a small, agile team where roles can be fluid and collaboration is highly encouraged. You may have the opportunity to work closely with product managers, designers, and other developers, allowing for greater input into the overall direction of the product. Daily responsibilities often extend beyond coding to include brainstorming sessions, code reviews, and quick iteration based on user feedback. The environment is fast-paced, offering opportunities for rapid skill development and taking on new responsibilities as the company grows. This setting is ideal for those who enjoy problem-solving, continuous learning, and making a direct impact on the product and business.
What are popular job titles related to Java Developer Startup jobs in Ontario? For Java Developer Startup jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Java Developer Startup jobs in Ontario look for? The top searched job categories for Java Developer Startup jobs in Ontario are:
Infographic showing various Java Developer Startup job openings in Ontario as of May 2026, with employment types broken down into 91% Full Time, and 9% Contract. Highlights an 46% In-person, 18% Hybrid, and 36% Remote job distribution, with an average salary of $127,888 per year, or $61.5 per hour.

$80K - $150K/yr

Full-time

Posted 23 days ago


Job description

About the Role

We are an innovative startup seeking a highly skilled and adaptable Senior Java Developer to join our dynamic team. In addition to developing robust and scalable software solutions, this role requires providing technical support to other departments. You will need to thrive in a fast-paced environment, handle high-pressure situations, and align with the tight schedules of a growing company.

If you are a critical thinker, capable of designing and implementing complex systems, rapidly learning new technologies, and effectively collaborating across departments, we'd love to hear from you.

Key Responsibilities

  • Design, develop, and maintain high-quality Java applications.
  • Provide technical support to various departments, ensuring smooth cross-departmental communication.
  • Debug and resolve complex bugs efficiently, ensuring the system runs reliably.
  • Write, review, and maintain comprehensive technical documentation.
  • Conduct and optimize unit and integration testing to ensure robust software quality.
  • Quickly onboard existing projects or tasks, ensuring seamless transition and continuity.
  • Stay updated with new tools, technologies, and best practices, adapting to evolving technical landscapes.

Qualifications

  • Education: Bachelor's degree or higher in Computer Science or related field.
  • Experience: 5+ years of professional experience in Java development.
  • Programming Skills:
  • Strong expertise in Java programming, including proficiency with generics and lambda expressions.
  • Mastery of object-oriented programming principles and design patterns.
  • Advanced knowledge of multi-threading and concurrent programming.
  • Strong ability to read, analyze, and work with existing source code.
  • Database: Expert knowledge of SQL and MySQL.
  • Technologies:
  • Proficiency in Redis and its various use cases.
  • In-depth understanding of AWS services.
  • Deep knowledge of Docker and Kubernetes.
  • Frameworks: Expertise in Spring Boot, Spring MVC, and Spring WebFlux.
  • Testing: Skilled in implementing unit tests and integration tests to maintain code quality.

Preferred Skills

  • Experience in a startup environment or a high-pressure, fast-paced workplace.
  • Familiarity with debugging tools and techniques.
  • Demonstrated ability to take ownership of complex projects and drive them to completion.
Employment Type: FULL_TIME