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Junior Software Developer Java Jobs in London, ON

Full Stack Developer, ASR

London, ON · Hybrid

CA$77K - CA$117K/yr

Bachelor's or master's degree in computer science, Software Engineering or a related field ... Expertise in back-end languages like Node.js, Python, Java, Go, C#, and associated frameworks. Able ...

... Java, including toolchains for documentation, testing, and operations / observability * Expertise in modern software development tools / ways of working (e.g. git/GitHub, devops tools, metrics ...

New

As a Quant Developer at Squarepoint you will work side-by-side with Quant Researchers and Traders to implement novel trading strategies and software for research projects. You could develop tools to ...

Demonstrated ability to mentor junior developers, conduct thorough code and solution reviews, and uphold industry best practices in the industry * Experience in implementing Application Lifecycle ...

Design, build and maintain the CI/CD pipelines for automated software builds, tests, and ... Experience working with backend Java services and database technologies (Postgres, NoSQL, etc.

AI Engineer

London, ON · On-site

CA$77K - CA$117K/yr

... software engineering. * Expertlevel proficiency in Python, with working familiarity in Java and/or TypeScript for enterprise application development. * Deep handson experience with leading AI and LLM ...

Exposure to millwork engineering workflows * Familiarity with Mozaik or similar software Who This ... junior training role * a loosely structured environment Work Structure * On-siteRemote / hybrid ...

What we're looking for: * 8+ years of professional software engineering experience with 3 years of ... Experience building web applications across diverse technologies (Java, Javascript, golang, etc.

What we're looking for: * 8+ years of professional software engineering experience with 3 years of ... Experience building web applications across diverse technologies (Java, Javascript, golang, etc.

What we're looking for: * 8+ years of professional software engineering experience with 3 years of ... Experience building web applications across diverse technologies (Java, Javascript, golang, etc.

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Junior Software Developer Java information

What are some common challenges faced by Junior Software Developers working with Java, and how can they overcome them?

Junior Software Developers working with Java often encounter challenges such as understanding complex codebases, managing version control with tools like Git, and applying best practices for clean and efficient code. To overcome these obstacles, it's helpful to actively participate in code reviews, seek guidance from senior developers, and make use of online resources and documentation. Joining stand-up meetings and collaborating closely with teammates can also accelerate learning and help new developers adapt to the team's workflow.

What are the key skills and qualifications needed to thrive as a Junior Software Developer (Java), and why are they important?

To thrive as a Junior Software Developer (Java), you need a solid understanding of Java programming, algorithms, and object-oriented principles, often supported by a degree in computer science or related field. Familiarity with development tools like Eclipse or IntelliJ IDEA, version control systems such as Git, and knowledge of build tools like Maven or Gradle is often required. Strong problem-solving abilities, willingness to learn, and effective communication skills help junior developers collaborate and adapt quickly. These skills are crucial for building reliable software, integrating smoothly into development teams, and growing within the role.

What is the difference between Junior Software Developer Java vs Junior Software Developer Python?

AspectJunior Software Developer JavaJunior Software Developer Python
Required CredentialsBachelor's in CS or related field, Java certifications (optional)Bachelor's in CS or related field, Python certifications (optional)
Work EnvironmentEnterprise applications, backend development, large-scale systemsData analysis, scripting, web development, AI/ML projects
Employer & Industry UsageFinancial services, enterprise software, telecomTech startups, data science firms, research institutions
Common Search & ComparisonYesYes

Both roles typically require a bachelor's degree in computer science or related fields. Java developers often work on enterprise-level applications in industries like finance and telecom, while Python developers focus on data analysis, scripting, and AI projects in startups and research. The choice depends on your career interests and industry focus.

What does a Junior Software Developer Java do?

A Junior Software Developer Java is an entry-level programmer who specializes in building, testing, and maintaining software applications using the Java programming language. They typically work under the supervision of senior developers and contribute to coding, debugging, and documentation. Their responsibilities often include fixing bugs, writing unit tests, and collaborating with team members to deliver functional software solutions. This role is ideal for individuals who have a basic understanding of Java and are eager to gain professional experience in software development.
What are popular job titles related to Junior Software Developer Java jobs in London, ON? For Junior Software Developer Java jobs in London, ON, the most frequently searched job titles are:
What job categories do people searching Junior Software Developer Java jobs in London, ON look for? The top searched job categories for Junior Software Developer Java jobs in London, ON are:
What cities near London, ON are hiring for Junior Software Developer Java jobs? Cities near London, ON with the most Junior Software Developer Java job openings:
Infographic showing various Junior Software Developer Java job openings in London, ON as of June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.
Senior Compute Platform Engineer

Senior Compute Platform Engineer

GlaxoSmithKline

London, ON • On-site

Full-time

Posted 2 days ago


GlaxoSmithKline rating

8.9

Company rating: 8.9 out of 10

Based on 19 frontline employees who took The Breakroom Quiz

8th of 71 rated pharmaceutical


Job description

At GSK, we want to supercharge our data capability to better understand our patients and accelerate our ability to discover vaccines and medicines. The Onyx Research Data Platform organization represents a major investment by GSK R&D and Digital & Tech, designed to deliver a step-change in our ability to leverage data, knowledge, and prediction to find new medicines.

We are a full-stack shop consisting of product and portfolio leadership, data engineering, infrastructure and DevOps, data / metadata / knowledge platforms, and AI/ML and analysis platforms, all geared toward:

  • Building a next-generation, metadata- and automation-driven data experience for GSK's scientists, engineers, and decision-makers, increasing productivity and reducing time spent on "data mechanics"
  • Providing best-in-class AI/ML and data analysis environments to accelerate our predictive capabilities and attract top-tier talent
  • Aggressively engineering our data at scale, as one unified asset, to unlock the value of our unique collection of data and predictions in real-time

Our Compute Platform Engineering team is building a first-in-class platform of toolchains and workflows that accelerate application development, scale up computational experiments, and integrate all computation with project metadata, logs, experiment configuration and performance tracking over abstractions that encompass Cloud and High-Performance Computing. This metadata-forward, CI/CD-driven platform represents and enables the entire application and analysis lifecycle including interactive development and explorations (notebooks), large-scale batch processing, observability and production application deployments.

A Sr. Compute Platform Engineer is a leading technical contributor who can consistently take a poorly defined business or technical problem, work it to a well-defined problem / specification, and execute on it at a high level. They have a strong focus on metrics, both for the impact of their work and for its inner workings / operations. They are a model for the team on best practice for software development in general (and their specialization in particular), including code quality, documentation, DevOps practices, and testing, and consistently mentor junior members of the team. They ensure robustness of our services and serve as an escalation point in the operation of existing services, pipelines, and workflows.

A Sr. Compute Platform Engineer should be deeply familiar with the tools of their specialization and of their customers and engaged with the open-source community surrounding them - potentially, even to the level of contributing pull requests.

Key Responsibilities:

  • Designs, builds, and operates tools, services, workflows, etc that deliver high value through the solution to key business problems,
  • Responsible for development of key components of a hybrid on-prem/cloud compute platform for both interactive and scalable batch computing and establishing of processes and workflows to transition existing HPC users and teams to this platform
  • Responsible for code-driven environment, applications, and container/image builds as well as CI/CD driven application deployments.
  • Consult science users on application scalability to PBs of data by having a deep understanding of software engineering, algorithms, and underlying hardware infrastructure and their impact on performance.
  • Confidently optimizes design and execution of complex solutions within large-scale distributed computing environments
  • Produces well-engineered software, including appropriate automated test suites, technical documentation, and operational strategy
  • Ensure consistent application of platform abstractions to ensure quality and consistency with respect to logging and lineage
  • Fully versed in coding best practices and ways of working, and participates in code reviews and partnering to improve the team's standards
  • Adhere to QMS framework and CI/CD best practices and helps to guide improvements to them that improve ways of working
  • Provide leadership to team members to help others get the job done right

Why You?

Basic Qualifications:

  • Bachelor's degree in data engineering, Computer Science, Software Engineering or related discipline
  • 6+ years of professional experience
  • Experience with Python
  • Experience with Cloud
  • Experience with High Performance Compute (HPC)

Preferred Qualifications:

  • Deep knowledge and use of at least one common programming language: e.g., Python, C++, Java, including toolchains for documentation, testing, and operations / observability
  • Deep expertise in modern software development tools / ways of working (e.g. git/GitHub, devops tools, metrics / monitoring, ...)
  • Deep cloud expertise (e.g., AWS, Google Cloud, Azure), including infrastructure-as-code tools and scalable compute technologies, such as Google Batch and Vertex
  • Experience with CI/CD implementations using git and a common CI/CD stack (e.g., Azure DevOps, CloudBuild, Jenkins, CircleCI, GitLab)
  • Deep expertise with Docker, Kubernetes, and the larger CNCF ecosystem including experience with application deployment tools such as Helm
  • Experience with low level application builds tools (make, CMake) as well as automated build systems such as spack or easybuild
  • Application experience of CI/CD implementations using git and a common CI/CD stack (e.g., Jenkins, CircleCI, GitLab, Azure DevOps)
  • Experience in workflow orchestration with tools such as Argo Workflow, Airflow, and scientific workflow tools such as Nextflow, Snakemake, VisTrails, or Cromwell
  • Experience with application performance tuning and optimization, including in parallel and distributed computing paradigms and communication libraries such as MPI, OpenMP, Gloo, including deep understanding of the underlying systems (hardware, networks, storage) and their impact on application performance.
  • Demonstrated excellence with agile software development environments using tools like Jira and Confluence
  • Deep familiarity with the tools, techniques, optimizations in high-performance applications space, including engagement with the opensource community (and potentially making contributions to such tools)

#GSKOnyx

#LI-GSK

Why GSK?

Uniting science, technology and talent to get ahead of disease together.

GSK is a global biopharma company with a purpose to unite science, technology and talent to get ahead of disease together. We aim to positively impact the health of 2.5 billion people by the end of the decade, as a successful, growing company where people can thrive. We get ahead of disease by preventing and treating it with innovation in specialty medicines and vaccines. We focus on four therapeutic areas: respiratory, immunology and inflammation; oncology; HIV; and infectious diseases - to impact health at scale.

People and patients around the world count on the medicines and vaccines we make, so we're committed to creating an environment where our people can thrive and focus on what matters most. Our culture of being ambitious for patients, accountable for impact and doing the right thing is the foundation for how, together, we deliver for patients, shareholders and our people.

GSK is an Equal Opportunity Employer. This ensures that all qualified applicants will receive equal consideration for employment without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), parental status, national origin, age, disability, genetic information (including family medical history), military service or any basis prohibited under federal, state or local law.

We believe in an agile working culture for all our roles. If flexibility is important to you, we encourage you to explore with our hiring team what the opportunities are.

Should you require any adjustments to our process to assist you in demonstrating your strengths and capabilities contact us at UKRecruitment.Adjustments@gsk.com where you can also request a call.

Please note should your enquiry not relate to adjustments, we will not be able to support you through these channels. However, we have created a Recruitment FAQ guide. Click the link where you will find answers to multiple questions we receive

Important notice to Employment businesses/ Agencies

GSK does not accept referrals from employment businesses and/or employment agencies in respect of the vacancies posted on this site. All employment businesses/agencies are required to contact GSK's commercial and general procurement/human resources department to obtain prior written authorization before referring any candidates to GSK. The obtaining of prior written authorization is a condition precedent to any agreement (verbal or written) between the employment business/ agency and GSK. In the absence of such written authorization being obtained any actions undertaken by the employment business/agency shall be deemed to have been performed without the consent or contractual agreement of GSK. GSK shall therefore not be liable for any fees arising from such actions or any fees arising from any referrals by employment businesses/agencies in respect of the vacancies posted on this site.

Please note that if you are a US Licensed Healthcare Professional or Healthcare Professional as defined by the laws of the state issuing your license, GSK may be required to capture and report expenses GSK incurs, on your behalf, in the event you are afforded an interview for employment. This capture of applicable transfers of value is necessary to ensure GSK's compliance to all federal and state US Transparency requirements. For more information, please visit the Centers for Medicare and Medicaid Services (CMS) website at https://openpaymentsdata.cms.gov/


What GlaxoSmithKline employees say

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About GlaxoSmithKline

Sourced by ZipRecruiter

GlaxoSmithKline is a globally recognized pharmaceutical and healthcare company based in Philadelphia, PA, USA. Originated from a merger between Glaxo Wellcome and SmithKline Beecham in 2000, the company excels in the pharmaceutical industry and holds a leading position in making medicines, vaccines, and consumer healthcare products. GSK's mission is to improve the quality of human life by enabling people to do more, feel better, and live longer. They adhere to core values of transparency, integrity, respect for people, and patient-focus, reflecting in their endeavors to conduct research and deliver innovative healthcare solutions to patients and consumers worldwide.

Industry

Scientific research and development services

Company size

10,000+ Employees

Headquarters location

Philadelphia, PA, US