External Job Postings

Position Title: Project Coordinator
Department/Unit: Pediatrics
Research Project: Solutions for Kids in Pain (SKIP)
Location: Halifax, Nova Scotia, Canada
Posting Number: GP63-25
Employee Group: Grant-Paid
Position Type: Term
Duration of Contract (if applicable):1 year with possibility of extension
Employment Type: Full Time
Full-time Equivalency (FTE): 1.0
Salary: $65,000 - $85,000 (for 37.5 hours/ week)
 

About the Organization    

Solutions for Kids in Pain (SKIP) is a national knowledge mobilization network and a Dalhousie University Research Centre whose mission is to improve children’s pain management by mobilizing evidence-based solutions through coordination and collaboration. SKIP’s focus is on knowledge mobilization. Specifically, SKIP leads activities and initiatives that mobilize the best available research on children’s pain from around the globe to ensure that existing evidence is effectively shared, translated, and applied in practice and in policy across Canadian health institutions. Our goal is to improve children’s pain management in Canada and beyond.
 

Job Summary    

Reporting to SKIP’s Scientific Director, the Project Coordinator will be based in Halifax, Nova Scotia in SKIP’s Administrative Centre on the Dalhousie Halifax campus. They will work closely with the Associate Scientific Director, Managing Director, other Project Coordinator(s), and broader national network. A key responsibility of this role is to support SKIP’s knowledge mobilization efforts by summarizing and critically appraising existing research evidence on children’s pain. The Project Coordinator will also play a pivotal role in leading the planning, execution, and evaluation of various projects and initiatives at SKIP (e.g., supporting efforts for widespread adoption of the Pediatric Pain Management health standard [CAN/HSO13200:2023] at diverse hospitals across Canada), as well as general operations.
 

Key Responsibilities    

• Regularly review, critically appraise, summarize, and synthesize research on pediatric pain management topics to ensure that SKIP’s knowledge mobilization efforts are based on high-quality evidence and remain current, relevant, and impactful.
• Support funding and publication opportunities by helping to write and edit funding applications and publications about SKIP’s activities, and prepare other materials like conference abstracts, posters, and presentations for different audience types.
• Provide administrative and operational support for SKIP’s activities by helping with scheduling, organizing meetings, tracking project progress, and maintaining project records and information in alignment with Dalhousie’s policies and procedures.
• Assist in SKIP’s efforts to build awareness about the importance of quality pain management for children by preparing and sharing evidence-based information with health professionals, decision-makers, families, and the public.
• Develop and maintain strong and positive relationships with diverse audiences, including researchers, organizational partners, health professionals, and patients and caregivers, to ensure their expertise helps to shape SKIP’s resources and strategies.
• Responsible for collecting and tracking the activities of the SKIP Network and collecting feedback from partners to shape reports to funders and the public to measure and showcase the impact of SKIP’s work.

The successful applicant will be eligible for hybrid work (combination of in-person work on the Dalhousie campus and remote work from Halifax Nova Scotia) as agreed by all parties based on operational requirements and university guidelines.
 

Note 

All applications from outside of Nova Scotia should indicate that the applicant is willing to relocate to Halifax.

National and/or international travel, estimated to be approximately <5%-time commitment, may be required. Occasional evening or weekend work may be required to meet deadlines and other operational requirements.
 

Required Qualifications    

• Master’s or professional degree in a relevant discipline (e.g., science, health, medicine, or equivalent) with expertise in gathering, critically appraising, and synthesizing evidence, with the ability to interpret and communicate complex topics into plain language, and to tailor messaging for diverse audiences.
• Demonstrated skill in academic writing with a track record of contributing to successful publications and funding applications and with a demonstrated ability to deliver clear, compelling, and accessible presentations to diverse audiences.
• Proven experience leading collaborative projects and building partnerships in a virtual environment.
• Attention to detail with high regard for quality and the ability to work quickly and accurately.
• Highly skilled in Microsoft Office suite tools, including Word, PowerPoint, Excel, Outlook, and SharePoint, to support document and presentation development, activity tracking, and maintenance of records and information.
• Strong communication (written and verbal), organizational, and relationship building skills , along with the ability to take initiative, work independently, and collaboratively.

Assets    

• Prior experience in a hospital-setting, pediatrics, implementation science, and/or pain management.
• Prior experience with evaluating projects or programs.
• Proficiency in French, both verbal and written, as SKIP engages with diverse partners and knowledge users across Canada, including Francophone communities.

Additional Information    

Dalhousie University supports a healthy and balanced lifestyle. Our total compensation package includes a voluntary RRSP, health and dental plans and an employee and family assistance program.
 

Application Consideration    

We thank all applicants for their interest, however, only candidates selected for an interview will be contacted.

Click here to apply
 

Diversity Statement    

Dalhousie University commits to achieving inclusive excellence through continually championing equity, diversity, inclusion, and accessibility. The university encourages applications from: Indigenous Peoples of Turtle Island (especially Mi’kmaq), Persons of Black/African descent (especially African Nova Scotians), members of other racialized groups, persons with disabilities, women, persons identifying as members of 2SLGBTQIA+ communities, and all candidates who would contribute to the diversity of our community.

In accordance with our Employment Equity Policy, preference will be given in hiring processes to candidates who self-identify as members of one or more of the equity-deserving groups listed above. For more information, including details related to our Employment Equity Policy and Plan and definitions of equity-deserving groups please visit www.dal.ca/hiringfordiversity

If you require any support for the purpose of accommodation, such as technical aids or alternative arrangements, please let us know of these needs and how we can be of assistance. Dalhousie University is committed to ensuring all candidates have full, fair, and equitable participation in the hiring process. Our complete Accommodation Policy can be viewed here.

Job ID: 23016
Deadline to Apply: 2025-09-21
Target Openings: 1
Annualized Hiring Range: $96,846 - $133,155 *Compensation commensurate with experience 

Neonatal Nurse Practitioner Trainee - APN Intern

Choosing to work for The Hospital for Sick Children means that you've chosen more than a job, you've chosen a career where you can have a meaningful impact on the lives of children and families every day. Our staff are our greatest strength, and SickKids works hard to provide a supportive working environment where Advanced Practice Nurses (APNs) can perform their best work possible. Working in collaboration with the interdisciplinary Health Care team, APN Interns at SickKids can build expertise and leadership in the areas of:

• Clinical Practice
• Education, Mentorship, and Research
• Leadership and Organizational & Systems Management

SickKids is recognized as one of the world's foremost paediatric health-care institutions and is Canada's leading centre dedicated to advancing children's health.  The Neonatology Program is recruiting candidates to practice as future Neonatal Nurse Practitioners through entry into the Neonatal Nurse Practitioner (NNP) Trainee Program as an APN Intern.  Successful candidates would be required to complete a Post-Master Neonatal Nurse Practitioner education program or a Master of Nursing - Neonatal Nurse Practitioner program. 

As a future Neonatal Nurse Practitioner (NNP) (1.0 FTE Permanent), you will provide leadership and promote inter-professional excellence and collaboration in family-centred care within the five main role components of expert practice, education, consultation, research, and leadership/change agency in a dynamic clinical environment. 

Here's What You'll Get to Do:

• Provide comprehensive health care for critically ill newborns and their families within the NICU
• Integrate nursing and medical knowledge and skills within a broad scope of advanced nursing practice
• Foster interprofessional collaboration in the coordination of plans of care
• Provide relevant health education to families that is based on their needs
• Provide leadership in planning for successful transition of infants leaving NICU (within SickKids, as well as to referral community hospitals)
• Identify and link to services and resources in community, assist with acquiring specialized medical care for infants in the program, and participate/lead in planning for transition of care.
• Provide specialty consultation regarding neonatal care for teams within and outside of the hospital
• Provide leadership in advancing clinical practice and the provision of safe, high-quality family-centred care
• Provide mentorship and coaching to support the development of nursing and interprofessional colleagues
• Identify, integrate, and evaluate research-based innovations for improving patient care
• Create, utilize and/or disseminate new knowledge using formal and informal channels

Here's What You'll Need

• Minimum of 3-5 years of progressive neonatal intensive care nursing experience
• Registration with the College of Nurses of Ontario with general class in good standing
• Successful candidates must secure enrolment in a Post-Master or Master of Nursing - Neonatal Nurse Practitioner education program
• Eligibility for registration with the College of Nurses of Ontario within the RN - Extended Class
• Leadership experience at the bedside and/or unit level
• Ability to act as a change agent, and foster teamwork and consensus-building
• Innovative critical thinking with excellent communication and problem-solving skills
• Knowledge of theoretical and conceptual frameworks and their practical application
• Demonstrate commitment and actions in advancing equity, diversity and inclusion objectives

Here's What You'll Love 

• This position is eligible for employee benefits coverage including but not limited to; health, dental and life insurance. The full benefits package will be discussed at the time of offer. 
• A focus on employee wellness with our new Staff Health and Well-being Strategy. Self-care helps us support others.  
• A hospital that welcomes and focuses on Equity, Diversity, and Inclusion.  
• The opportunity to make an impact. Regardless of your role or professional interest, you will be making a difference at SickKids and contributing to our vision of Healthier Children. A Better World.  
• For more on why you'll love working at SickKids, visit our careers site.  

Employment Type

• Full-time, Permanent (37.5 hours per week / 1.0 FTE)

To apply, please visit The Hospital for Sick Children (SickKids) website:

https://career.sickkids.ca:8001/psc/CRPRD/CAREER/HRMS/c/HRS_HRAM_FL.HRS_CG_SEARCH_FL.GBL?Page=HRS_APP_JBPST_FL&Action=U&FOCUS=Applicant&SiteId=1&JobOpeningId=22955&PostingSeq=1

Job ID: 23000
Deadline to Apply: 2025-09-21
Target Openings: 1

SickKids is advancing its Health Equity and Inclusion strategy and is seeking a Director, Health Equity and Inclusion. Reporting to the Executive Lead, Strategic Advisor of Health Equity and Inclusion, the Director will lead the development and implementation of an institution-wide strategy that integrates Equity, Diversity and Inclusion (EDI), Indigenous Health, and Health Equity. This role will involve strategic planning, program design, implementation oversight, and evaluation. The Director will collaborate with internal and external partners to advance health equity through data informed interventions related to social determinants of health into care, advance equitable inclusive practices, and build sustainable programs that support the SickKids 2030-Office of Health Equity Inclusion (SK2030-OHEI) vision.

Here's What You'll Do

• Lead the development and implementation of the integrated Health Equity and Inclusion strategy aligned with SK2030-OHEI priorities.
• Lead and manage the Office of Health Equity and Inclusion team, including program managers, analysts, and advisors, excluding the Indigenous Program Manager.
• Oversee the design and delivery of programs that advance EDI and Health Equity across the organization.
• Collaborate with the Indigenous Program Manager and provide support to advance and implement the strategic plan for Indigenous health.
• Champion the collection and use of health equity and social determinant of health data to inform decision-making and improve patient outcomes.
• Collaborate with clinical, research, administrative and educational teams to inform access and delivery of social determinants of health care.
• Support the development of inclusive policies and cultural safety education.
• Engage with internal networks, advisory groups, and external stakeholders to foster a culture of inclusion and accountability.
• Work with the Office Health Equity and Inclusion (OHEI) team and partners within and outside the organization to apply for funding for projects and research.

Here's What You'll Need

• A bachelor's degree in a relevant discipline (e.g. Social Work, Law, Sociology, Education, Organizational Psychology, Organizational Development).
• Must have clinical experience in a healthcare setting, involving direct work with patients and their families (e.g. Allied Health Professionals, Registered Nurse, etc.).
• Minimum of 3 years' experience effectively leading teams coupled with proven progressive leadership in advancing EDI and Health Equity within complex organizations.
• Proven understanding of Indigenous cultural safety; ability to support/create culturally safe care environments and build relationships with Indigenous communities and organizations.
• Proven experience leading and developing people and teams in achieving results while developing their capability to meet current and future needs.
• Demonstrated success in strategy development, implementation and evaluation related to Health Equity and Inclusion.
• Proficiency with social determinants of health, anti-oppression frameworks, and cultural safety principles.
• Achieving results through effective and impactful organizational change management expertise.
• Exceptional relationship skills developing partnerships and collaboration (both internal and external).
• A master's degree is an asset in a relevant discipline (e.g. Social Work, Law, Sociology, Education, Organizational Psychology, Organizational Development).

Here's What You'll Love

• This position is eligible for employee benefits coverage including but not limited to, pension, health, dental and life insurance. The full benefits package will be discussed at the time of the offer.
• A focus on employee wellness with our new Staff Health and Well-being Strategy. Self-care helps us support others.
• A hospital that welcomes and focuses on Health Equity and Inclusion.
• The opportunity to make an impact. Regardless of your role or professional interest, you will be making a difference at SickKids and contributing to our vision of Healthier Children. A Better World.
• For more on why you'll love working at SickKids, visit our careers site. Employment type
• Full Time, 35-hour workweek, Hybrid work environment (4 days in-person).

To apply, please visit The Hospital for Sick Children (SickKids) website:
https://career.sickkids.ca:8001/psc/CRPRD/CAREER/HRMS/c/HRS_HRAM_FL.HRS_CG_SEARCH_FL.GBL?Page=HRS_APP_JBPST_FL&Action=U&FOCUS=Applicant&SiteId=1&JobOpeningId=23000&PostingSeq=1

Job ID: 21665
Deadline to Apply: Until Filled
Target Openings: 2

Position Description

Choosing to work for The Hospital for Sick Children means that you've chosen more than a job, you've chosen a career where you can have a meaningful impact on the lives of children, youth and families every day. Our staff are our greatest strength and SickKids works hard to provide a supportive working environment where Nurse Practitioners can give their best work possible. Working in collaboration with the interprofessional health care team, Nurse Practitioners at SickKids have the opportunity to provide expertise in the areas of:

• Clinical Practice
• Education, Mentorship, Research and Knowledge Translation
• Leadership and Organizational & Systems Management

SickKids is recognized as one of the world's foremost paediatric health-care institutions and is Canada's leading centre dedicated to advancing children's health. Nurse Practitioners play a critical role to our success.  We are currently looking for a Neonatal Nurse Practitioner to join the Neonatal Intensive Care Unit, Neonatology Program. As a Neonatal Nurse Practitioner, you will provide leadership and promote inter-professional excellence and collaboration in child and family-centred -care within the five main role components of expert practice, education, consultation, research and leadership/change agency in a dynamic clinical environment. 

Here's What You'll Get To Do:

• Provide comprehensive health care for critically ill newborns within the NICU, coordinating the interdisciplinary plan of care
• Integrate nursing and medical skills and knowledge within a broad scope of advanced nursing practice
• Provide leadership in advancing clinical practice and the provision of safe and high quality child and family-centred care
• Foster interprofessional collaboration in the coordination of plans of care
• Assume a leadership role in advancing the quality of clinical practice and the provision of high quality, safe care
• Provide mentorship and coaching to support the development of nursing and Interprofessional colleagues
• Identify, integrate and evaluate research-based innovations for improving patient care
• Create, utilize and/or disseminate new knowledge using formal and informal channels
• Provide relevant health education to families that is based on their needs, learning styles and stage of development
• Provide leadership in planning for successful transition of infants outside of the NICU (within SickKids, as well as to referral hospitals)
• Identify and link to services and resources in community, provide assistance with acquiring specialized medical care for infants in the program and participate/lead in planning for transition of care
• Provide specialty consultation regarding neonatal care for teams within and outside of the hospital

Here's What You'll Need

• Master of Nursing or equivalent with a clinical focus
• Completion of a Nurse Practitioner program with a Neonatal emphasis
• Neonatal Nurse Practitioner certification
• Registration with the College of Nurses of Ontario within the RN (Extended Class)
• 3-5 years of clinical nursing experience in neonatology, experience as an NNP an asset
• Proven ability to provide leadership
• Ability to act as a change agent, and foster teamwork and consensus-building
• Innovative critical thinking with excellent communication, public speaking and problem solving skills
• Knowledge of theoretical and conceptual frameworks and their practical application
• Demonstrate commitment and actions in advancing equity, diversity and inclusion objectives

Here's What You'll Love 

• This position is eligible for employee benefits coverage including but not limited to; health, dental and life insurance. The full benefits package will be discussed at the time of offer. 
• A focus on employee wellness with our new Staff Health and Well-being Strategy. Self-care helps us support others.  
• A hospital that welcomes and focuses on Equity, Diversity, and Inclusion.  
• The opportunity to make an impact. Regardless of your role or professional interest, you will be making a difference at SickKids and contributing to our vision of Healthier Children. A Better World.  
• For more on why you'll love working at SickKids, visit our careers site.  

Employment Type

• Full-Time, Permanent (37.5  hours per week - 1.0 FTE)
• Min. to Max. Hourly Rate: $64.70 - $77.50 *Compensation commensurate with experience
• This position offers full benefits including health and dental coverage, vacation time, sick time, personal days, LTD, life insurance and the opportunity to participate in the SickKids Pension plan.

Please apply online via the SickKids Career Site at: https://career.sickkids.ca:8001/psc/CRPRD/CAREER/HRMS/c/HRS_HRAM_FL.HRS_CG_SEARCH_FL.GBL?Page=HRS_APP_JBPST_FL&Action=U&FOCUS=Applicant&SiteId=1&JobOpeningId=21665&PostingSeq=1

President & Chief Executive Officer

Location: Toronto, Ontario

Holland Bloorview Kids Rehabilitation Hospital believes in creating a world where all youth and children belong. We are the only children’s rehabilitation hospital in Canada focused on combining world-class care, transformational research, and academic leadership in the field of child and youth rehabilitation and disability. We are a top 40 Canadian research hospital that is fully affiliated with the University of Toronto. Providing both inpatient and outpatient services, Holland Bloorview is renowned for its expertise in co-creating with clients and families to provide exceptional care and is the only organization to ever achieve 100 per cent in three successive quality surveys by Accreditation Canada. Holland Bloorview is a founding member of Kids Health Alliance, a network of partners working to create a high quality, consistent and coordinated approach to pediatric health care that is centred around children, youth and their families. Together we dream big. Together we champion a world of possibility.

We are creating a world of possibility for kids and youth with disabilities. 

Reporting to the Board of Directors, the President and Chief Executive Officer (CEO) of Holland Bloorview Kids Rehabilitation Hospital (Holland Bloorview) will assume leadership of Canada’s only freestanding paediatric hospital devoted exclusively to childhood-onset disability, injury, and developmental diversity. As a globally recognized academic health sciences centre, Holland Bloorview is distinguished by its excellence in clinical care including client and family centred co-creation of care, research, and education, as well as its unwavering commitment to inclusion, accessibility. The organization plays a pivotal role in Ontario’s paediatric healthcare system, connects hospitals and providers, and is a member of the Toronto Academic Health Science Network (TAHSN). Its influence extends nationally through its pioneering research, policy advocacy, and unwavering commitment to client and family engagement.

As the healthcare system undergoes a period of profound transformation, the organization is demonstrating future-readiness and decisive leadership by embracing fundamental shifts in care delivery, clinical practice, and the integration of emerging technologies. The CEO will lead this evolution with clarity and conviction, advancing the hospital’s strategic and operational agenda while ensuring continuity of its mission and stewardship of its resources. Oversight will encompass a broad enterprise that includes clinical programs, research initiatives, educational partnerships, advocacy, and system engagement. Guiding performance, enabling innovation, and navigating fiscal and operational complexity will require a rare combination of foresight, pragmatism, and courage.

The CEO is accountable for advancing Transformative Care, Inclusive World: Holland Bloorview 2030, Holland Bloorview’s strategic plan that sets a clear and ambitious course toward the most meaningful and healthy futures for all children, youth, and families. Developed through deep engagement with clients, families, staff, researchers, educators, and system partners, the plan is anchored in four strategic directions. The CEO is responsible for translating this vision into action by aligning priorities across the organization, removing barriers to providing care in partnership with families, fostering a culture of innovation and collaboration, and ensuring that progress is guided by continuous reflection, shared learning, and measurable outcomes.

Externally, the CEO will serve as the hospital’s ambassador and champion, shaping relationships with academic and clinical partners, other stakeholders in the community, donors, and government representatives and elected officials at the municipal, provincial, and federal levels to secure ongoing and sustainable sources of funding. Engagement with the Holland Bloorview Foundation will be central to aligning philanthropic vision and accountability to donors with institutional goals. Strategic fluency, political acuity, and governance experience will all be vital in stewarding a complex, multi-stakeholder environment. Equally essential will be the ability to preserve what is most cherished within Holland Bloorview’s culture, while leading with imagination and integrity toward a bold and compassionate future.

As a uniquely qualified candidate, one who cares deeply for kids and families, the new CEO will bring a depth of character defined by humility, empathy, and integrity, matched by a capacity to inspire, advocate and lead across disciplines and sectors. The new CEO will bring a record of accomplishment in executive leadership roles and direct experience engaging with or reporting to a governing board, including a strong grasp of fiduciary responsibility and risk oversight. Comfortable within academic and policy environments, and genuinely connected to the experiences of children, families, and staff, the new CEO will embody the values of Holland Bloorview through presence, action, and enduring commitment. A Master’s degree or equivalent academic preparation is preferred.

To apply for this outstanding opportunity, please submit your application and related materials to Jim Stonehouse, Partner and Pamela Colquhoun, Partner via Kathy Luu, Senior Associate (kluu@boyden.com).

Holland Bloorview (www.hollandbloorview.ca) is committed to fostering a climate of inclusion, diversity, equity accessibility and anti-racism (IDEAA). We welcome and respect the diversity of all members of our community and we seek to create an inclusive culture for our staff, participants, trainees and volunteers. To help in our journey towards fully reflecting the communities we partner with, we welcome and encourage applications from Black individuals and other racialized persons, Indigenous Peoples, women, persons with disabilities, LGBTQI2SA+ persons and others who may contribute to further diversification of ideas within our community. Holland Bloorview is committed to fair assessment of a candidate's abilities, and consideration for diversity of thought, method and experience, including non-traditional career paths. Should applicants require accommodations during any stage in the recruitment process, please contact us.

Pediatric Outcomes imProvement through COordination of Research Networks (POPCORN)

POPCORN is seeking a visionary and collaborative leader to serve as its next Network Director (Nominated Principal Investigator - NPI).

About POPCORN

POPCORN is a national pediatric research platform dedicated to improving child and maternal health outcomes through coordinated, multi-disciplinary research efforts. With over 100 team members and partners, POPCORN integrates expertise across clinical, scientific, public health, and patient engagement domains.

Role Overview

The Network Director (NPI) will provide strategic leadership and oversight for the POPCORN Network and its research initiatives, including potential funding initiatives. As Chair of the Executive Committee, the NPI will guide the network’s scientific direction, operational coordination, working collaboratively with the operations’ team, and stakeholder engagement. The role may be shared with a co-director, if desired.

Key Responsibilities

• Provide overall leadership and strategic direction for the POPCORN Network.
• Chair the Executive Committee and oversee network operations.
• Ensure alignment of POPCORN activities with its mission and objectives.
• Represent POPCORN in communications with granting agencies and other stakeholders and ensure POPCORN is visible.
• Assume administrative and financial responsibility for the grant.
• Foster collaboration across POPCORN’s pillars, committees, and partners.
• Plan for future funding opportunities.

Eligibility Criteria

• Be an established leader in pediatric health research or a related field.
• Demonstrate experience in leading large, multi-institutional research initiatives.
• Have a strong track record in research funding, administration, and stakeholder engagement.
• Be committed to principles of equity, diversity, inclusion, and Indigeneity (EDI+I).
• Be eligible to hold granting agency funding as a Nominated Principal Investigator at an eligible academic institution.
• Have been actively involved in POPCORN so far.
• Should not be the director of one of POPCORN’s network, while POPCORN network director.

Term and Succession

The term is for 2 years, renewable once. The NPI will provide a minimum of 3 months’ notice prior to stepping down to allow for succession planning. An overlap with the current NPI is desirable, with a start date as soon as possible but on March 1st 2026, at the latest.

Application Process

Interested candidates should submit:

1. A curriculum vitae (CV), no preferred format.
2. A letter of intent outlining their vision for POPCORN, leadership experience, whether they are open to a co-NPI, and alignment with POPCORN’s mission and values.

Deadline for submission: September 29, 2025

Submit applications to: Marianne Rufiange: Marianne.rufiange.hsj@ssss.gouv.qc.ca

Selection Process

Applications will be reviewed by a selection committee composed of the POPCORN Executive Committee.
Shortlisted candidates may be invited for interviews. Final selection will be made by vote of the Executive Committee. Applicants will be notified of the outcome within 4–6 weeks of the submission deadline.

Questions?

• Should you wish to discuss the role further before applying, please reach out to Caroline Quach-Thanh: Caroline.quach-thanh.med@ssss.gouv.qc.ca
• For questions about the application process, please reach out to Marianne Rufiange: Marianne.rufiange.hsj@ssss.gouv.qc.ca