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Senior Java Software Developer Jobs in Waterloo, ON

Syntronic

Lead Software Developer (AOSP)

Waterloo, ON

CA$140K - CA$170K/yr

We are seeking a Lead Software Engineer to drive the design, development, and maintenance of ... Design, implement, and support new feature development using Java and Kotlin, utilizing proof-of ...

Targeted Talent

Java Technical Lead

Kitchener, ON · Remote

You Have: * 5+ years' experience as a Software Developer * Prior experience mentoring junior ... Experience working with Java , including great working knowledge of Java8 Lambdas and streaming ...

Targeted Talent

Java Technical Lead

Kitchener, ON · Remote

You Have: * 5+ years' experience as a Software Developer * Prior experience mentoring junior ... Experience working with Java , including great working knowledge of Java8 Lambdas and streaming ...

Targeted Talent

Java Technical Lead

Waterloo, ON · Remote

You Have: * 5+ years' experience as a Software Developer * Prior experience mentoring junior ... Experience working with Java , including great working knowledge of Java8 Lambdas and streaming ...

Targeted Talent

Java Technical Lead

Waterloo, ON · Remote

You Have: * 5+ years' experience as a Software Developer * Prior experience mentoring junior ... Experience working with Java , including great working knowledge of Java8 Lambdas and streaming ...

Targeted Talent

Senior DevOps Engineer

Waterloo, ON · Remote

$85K - $110K/yr

We are looking for an experienced Senior DevOps Engineer for our client. This is a permanent ... Software Engineer * Experience coding/building applications in Java OR Python . * Experience ...

Targeted Talent

Senior DevOps Engineer

Kitchener, ON · Remote

$85K - $110K/yr

We are looking for an experienced Senior DevOps Engineer for our client. This is a permanent ... Software Engineer * Experience coding/building applications in Java OR Python . * Experience ...

Targeted Talent

Senior DevOps Engineer

Kitchener, ON · Remote

$85K - $110K/yr

We are looking for an experienced Senior DevOps Engineer for our client. This is a permanent ... Software Engineer * Experience coding/building applications in Java OR Python . * Experience ...

Targeted Talent

Senior DevOps Engineer

Waterloo, ON · Remote

$85K - $110K/yr

We are looking for an experienced Senior DevOps Engineer for our client. This is a permanent ... Software Engineer * Experience coding/building applications in Java OR Python . * Experience ...

Great Lakes Group

Be Seen First

SCADA/MES Software Developer - Industrial Automation

Cambridge, ON · On-site

CA$43 - CA$60/hr

SCADA/MES Software Developer - Industrial Automation Wage based on experience We are seeking a ... Proficiency in programming languages such as Python , Java , C++ , C# , or Visual Basic (.NET) * ...

Targeted Talent

Senior .Net Developer

Kitchener, ON · On-site +1

We are looking for a Senior C#/.Net Developer for our client. This is a permanent position, that ... You Have: * 7+ years' experience as a Software Developer, developing applications with C#/.Net * ...

Targeted Talent

Senior .Net Developer

Kitchener, ON · On-site +1

We are looking for a Senior C#/.Net Developer for our client. This is a permanent position, that ... You Have: * 7+ years' experience as a Software Developer, developing applications with C#/.Net * ...

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All JobsSenior Java Software Developer JobsSenior Java Software Developer Jobs in Waterloo, ON

Senior Java Software Developer information

See Waterloo, ON salary details

$80.6K

$125.9K

$244.7K

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

As of Jun 25, 2026, the average yearly pay for senior java software developer in Waterloo, ON is $125,862.00, according to ZipRecruiter salary data. Most workers in this role earn between $109,086.00 and $128,665.00 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, and why are they important?

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 Waterloo, ON are hiring for Senior Java Software Developer jobs? Cities near Waterloo, 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 Waterloo, ON as of June 2026, with employment types broken down into 1% Internship, 81% Full Time, 5% Part Time, and 13% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $125,862 per year, or $60.5 per hour.

Lead Software Developer (AOSP)

Syntronic

Waterloo, ON

CA$140K - CA$170K/yr

Full-time

Posted 3 days ago

Job description

Join Syntronic: Where Your Innovation Shapes the Future
At Syntronic, we don't just follow industry trends-we set them! Join us in partnering with visionary companies and the brightest minds to turn ground-breaking ideas into reality. Imagine working on cutting-edge telecom advancements, pioneering automotive tech, life-saving healthcare innovations, and next-gen industrial automation. Our projects are diverse, impactful, and at the forefront of technological innovation. Be a part of something extraordinary!

Who are we?:
Syntronic is a global leader in design and development, specializing in electronics, electro-mechanics, and software. We're not just a company; we're a community of innovators. Our teams work on projects that define the future-from creating state-of-the-art communication systems and autonomous vehicles to advancing IoT solutions that revolutionize everyday life. At Syntronic, your work will make a real difference.

What we're looking for:
We are seeking individuals who want to:
        Collaborate with top-tier clients on transformative, cutting-edge projects.
        Engage with and learn from industry leaders
        Innovate from concept to completion, ensuring high standards.
        Gain international experience on global projects.
        Thrive in an entrepreneurial environment that supports new ideas.
        Explore multiple sectors like telecommunications, automotive, healthcare, and industrial automation.

We are seeking a Lead Software Engineer to drive the design, development, and maintenance of complex software products within the Android ecosystem. This role spans the entire Software Development Lifecycle (SDLC), requiring a full-stack mindset to manage everything from user interface components to deep server-side and system-level architecture. 

As a technical leader, you will not only contribute high-level code but also guide a team of junior developers, ensuring the adoption of industry best practices in an Agile environment. This position is ideal for an expert in AOSP who can navigate the complexities of Android middleware, multimedia, and system-level communications. 

What you'll do

  • Software Development & Architecture: Design, implement, and support new feature development using Java and Kotlin, utilizing proof-of-concepts and prototypes to validate technical directions. 

  • AOSP Leadership: Lead the implementation of system-level components, including headless services, APIs, AIDLs, HAL, and HIDL. 

  • Technical Mentorship: Lead a small team of junior developers, providing guidance, conducting design reviews, and performing constructive code reviews. 

  • Quality & Testing: Establish rigorous testing standards by writing comprehensive unit tests and utilizing frameworks like gtest, gmock, Robolectric, and Mockito. 

  • System Troubleshooting: Investigate, debug, and resolve complex bugs, race conditions, and bottlenecks using advanced tools like gdb and static analysis. 

  • Agile Collaboration: Work within an integrated team of developers and test engineers to investigate design options and deliver features that meet precise customer requirements. 

  • Innovation: Explore AI tools for software development and implement MCP (Model Context Protocol) servers and tools to improve engineering efficiency. 

What you'll need to get the job done

  • 10+ years of professional software development experience in Java and/or Kotlin. 

  • 4+ years of dedicated Android application and system development. 

  • 3+ years in a technical leadership or team lead capacity. 

  • Experience in the automotive industry is mandatory 

  • Direct experience with the AOSP level (Services, HAL, HIDL, AIDL). 

  • Experience with Multimedia and/or USB stacks on Android. 

  • Expert-level Java and Kotlin. 

  • Android Tools: Strong command of ADB, xTS (diagnosing issues reported by xTS), and streaming technologies (Bluetooth/USB). 

  • CS Fundamentals: Strong grasp of object-oriented design, data structures, and algorithms. 

  • Testing Frameworks: Proficiency with gtest, gmock, Robolectric, and Mockito. 

What will make us REALLY love you

  • Master's Degree in Computer Science or a related field. 

  • Knowledge of Machine Learning and experience using AI tools in the development process. 

  • Experience implementing MCP servers and tools. 

$140,000 - $170,000 a year
This position is for an active vacancy.

What you'll love about us:
At Syntronic, our employees are our greatest asset. We foster innovation, collaboration, and excellence, offering opportunities for personal and professional growth. Join a global community that values creativity and diversity.

Ready to Shape the Future with Us?
If you're ready to elevate your career and be part of a team that's making a real impact, we want to hear from you. Apply today and embark on your journey with Syntronic, where your ideas and innovations can truly make a difference.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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