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Senior Java Software Developer Jobs in Mississauga, ON

Atyeti Inc

Sr Java developer

Toronto, ON · On-site

A Java Developer designs, develops, tests, and maintains scalable Java-based applications (web, enterprise, mobile) by writing clean code, collaborating with teams, and integrating with databases and ...

United Airlines

Senior JAVA Developer

Toronto, ON · On-site

... Engineering, or related field. * 10+ years of IT experience with at least 3-5 years in a Solution Architect role. * Proven experience delivering enterprise-grade Java and Big Data solutions.

Scotiabank

Software Developer(Java)

Toronto, ON

Oracle Certified Java Developer certification will be an asset. * Technical Knowledge of event driven architecture (Kafka, Kafka connectors, Kafka brokers) * 3-5 years of working experience in the ...

Collabera Canada Inc

Be Seen First

Senior Java Engineer (React)

Toronto, ON · On-site

CA$70 - CA$120/hr

Senior Java Engineer Type: 6-month contract + opportunity to extend Location: 1 Queen Street East ... Comfortable contributing to frontend features and UI enhancements Cloud & DevOps * Cloud- AWS ...

Caseware

Senior Software Developer

Toronto, ON · On-site +1

CA$120K - CA$140K/yr

As a Senior Software Developer, you will be creating prototypes and software design proposals that ... Experience building highly distributed microservice architecture using Java 17/21, Spring Boot 3.x ...

Interac Corp.

Senior Software Developer

Toronto, ON · Hybrid

The vacant Senior Software Developer role will report to the Head, RTR, T&O and will be responsible ... Strong knowledge of Java frameworks (Spring, Spring Boot, Hibernate, Netty), Maven, SQL, Bamboo ...

Cority Software

Sr. Software Developer

Toronto, ON · On-site

Cority is looking for a Sr. Software Developer to be a part of our existing team. We are very interested in individuals who have a track record of finding creative solutions to unique problems and ...

Cority Software

Sr. Software Developer

Toronto, ON

Cority is looking for a Sr. Software Developer to be a part of our existing team. We are very interested in individuals who have a track record of finding creative solutions to unique problems and ...

Zynga

Senior Software Developer

Toronto, ON · On-site

CA$96K - CA$142K/yr

Zynga is looking for a Senior Software Engineer to join the Data Ingestion team in our Analytics ... Familiarity with building RESTful backend services in Java, GoLang and/or Python * Familiarity with ...

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Senior Java Software Developer information

See Mississauga, ON salary details

$81.5K

$127.2K

$247.3K

How much do senior java software developer jobs pay per year?

As of Aug 6, 2026, the average yearly pay for senior java software developer in Mississauga, ON is $127,159.00, according to ZipRecruiter salary data. Most workers in this role earn between $110,210.00 and $129,992.00 per year, depending on experience, location, and employer.

What is a senior Java software developer?

A Senior Java Software Developer is an experienced professional responsible for designing, developing, and maintaining complex software applications using the Java programming language. They typically lead development teams, mentor junior developers, and contribute to architectural decisions. Senior Java Developers are expected to have a deep understanding of Java frameworks, best coding practices, and software development methodologies. They also collaborate with stakeholders to deliver robust, scalable, and efficient software solutions.

What are some common challenges senior Java software developers face when leading projects, and how can they effectively address them?

Senior Java Software Developers often encounter challenges such as balancing hands-on coding with mentoring junior team members, managing project timelines, and ensuring code quality across large, distributed systems. To address these, it’s crucial to establish clear communication channels, implement robust code review processes, and leverage agile methodologies for project management. Additionally, staying up-to-date with the latest Java frameworks and best practices helps in making informed architectural decisions and streamlining development workflows.

What are the key skills and qualifications needed to thrive as a senior Java software developer?

To thrive as a Senior Java Software Developer, you need advanced proficiency in Java programming, strong knowledge of software design patterns, and experience with frameworks like Spring, typically backed by a bachelor's degree in computer science or a related field. Familiarity with tools such as Git, Maven, Jenkins, and cloud platforms, along with relevant certifications like Oracle Certified Professional Java SE, is often required. Strong problem-solving abilities, effective communication, and leadership skills help in mentoring teams and collaborating on complex projects. These skills ensure the delivery of robust, scalable software solutions and foster innovation within development teams.

What is the difference between Senior Java Software Developer vs Java Software Engineer?

AspectSenior Java Software DeveloperJava Software Engineer
Required CredentialsBachelor's degree in Computer Science or related field; extensive Java experience; certifications like Oracle Java CertificationBachelor's degree in Computer Science or related field; Java programming skills; certifications are common but not mandatory
Work EnvironmentDevelops complex applications, mentors junior staff, leads projectsDesigns and develops Java applications, collaborates with teams, implements features
Employer & Industry UsageUsed across tech companies, finance, healthcare, and enterprise sectorsCommon in software development firms, IT departments, and tech startups

The main difference between a Senior Java Software Developer and a Java Software Engineer lies in experience level and responsibilities. Senior developers often lead projects and mentor others, while Java Software Engineers focus on designing and implementing Java applications. Both roles require strong Java skills and similar educational backgrounds, but seniority involves additional leadership and project management duties.

What cities near Mississauga, ON are hiring for Senior Java Software Developer jobs? Cities near Mississauga, ON with the most Senior Java Software Developer job openings:
Senior Java Software Developer jobs near you
Infographic showing various Senior Java Software Developer job openings in Mississauga, ON as of July 2026, with employment types broken down into 92% Full Time, 6% Part Time, and 2% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $127,159 per year, or $61.1 per hour.

Sr Java developer

Atyeti Inc

Toronto, ON • On-site

Full-time

Re-posted 22 days ago

Job description

A Java Developer designs, develops, tests, and maintains scalable Java-based applications (web, enterprise, mobile) by writing clean code, collaborating with teams, and integrating with databases and systems, focusing on user needs and best practices like Agile, with duties ranging from coding and debugging to system analysis and user support, often involving frameworks like Spring and tools like Git.

Core Responsibilities

  • Design & Development: Build new and enhance existing Java applications, including back-end services, APIs (RESTful), and user interfaces.
  • Coding & Debugging: Write efficient, maintainable, and documented code, fixing bugs and troubleshooting issues

Key Skills & Qualifications

  • Strong Java programming skills, often with experience in frameworks (Spring).
  • Familiarity with databases (SQL/NoSQL), APIs, and version control (Git).
  • Understanding of full development lifecycle (SDLC) and Agile methodologies.
  • Problem-solving, analytical thinking, and strong communication.

Typical Environment

  • Often works in Agile teams, contributing to web, mobile, and enterprise systems.
  • Involves working with front-end developers, QA, and business analysts.

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