Senior Copywriter

For over 50 years, Cossette has been behind some of the biggest, most influential brands in Canadian culture. In fact, 98.5% of Canadians see our work every day. Which means, your parents too probably.
Transparency matters to us. For this role, you can expect a salary between $85,000- $105,000 annually, depending on experience. This is for an existing vacancy.
At Cossette, our Senior Copywriters are creative powerhouses. Equal parts sharp thinker and masterful wordsmith, they don’t just meet the brief—they push it further. Whether flying solo or teaming up with an Art Director, they own projects end to end, turning big ideas into bold, cross-channel work. Senior creatives set the bar high—driving craft, shaping strategy, and mentoring the next generation.
To thrive here, a Senior Copywriter needs serious talent, a passion for the work, and the drive to lead by example.
Key Responsibilities:Conceptual Writing: Develop original and persuasive copy concepts, headlines, taglines, and long-form content for various channels (digital, print, video scripts, social media, OOH, radio). Proficiently use contemporary writing tools, including generative AI, to brainstorm ideas, generate multiple copy variations, optimize existing copy, and create initial drafts for a full range of channels.Brand Voice: Master and evolve brand voices for assigned clients, ensuring all copy is on-brand, strategically sound, and impactful across all relevant platforms.Strategic Storytelling: Translate complex briefs and strategic insights into clear, concise, and compelling narratives that resonate with target audiences, ensuring they are adaptable for integrated campaign storytelling.Craft Excellence: Obsess over every word. Ensure all copy is clear, emotive, on strategy and grammatically correct. Critically review all your work, including that assisted by AI, for accuracy, nuance, emotional resonance, and ethical implications, applying a vital human touch.Collaboration: Work closely with Art Directors to develop integrated concepts. Collaborate with strategists, account managers, and clients.Presentation: Confidently present copy concepts and rationale to internal teams and clients, demonstrating how copy will drive impact across the media landscape.Mentorship: Begin to mentor and provide guidance to more junior Copywriters, sharing knowledge and best practices, including effective use of modern writing tools and thinking about how copy scales across channels. You encourage curiosity and experimentation, pushing teams out of their comfort zone to test new ideas.Industry Awareness: Stay current with language trends, cultural shifts, and effective communication strategies across all media channels.Represent Cossette: As one on the verge of creative leadership, you lead by example and with optimism. You’re an ambassador for Cossette, both internally and externally. You celebrate our people (especially younger creatives), our successes and those of our client partners.
Skills & Qualifications:5+ years of experience as a Copywriter in an advertising agency.A portfolio demonstrating strong conceptual abilities and exceptional craft with examples that have been successfully executed across multiple channels.Proven ability to work independently and collaboratively in a fast-paced environment, focused on integrated campaign delivery.Excellent communication and presentation skills.Strong understanding of strategic thinking and its application to creative work, with an ability to develop channel-agnostic solutions.Exceptional writing, editing, and proofreading skills.Ability to manage multiple projects and deadlines for complex, integrated campaigns.Proficiency in using generative AI tools (e.G., Midjourney, DALL-E, ChatGPT) as a creative aid to accelerate ideation and production for various channels.Awareness of ethical considerations and potential biases in content created with new technologies like generative AI.
What’s in it for you:We Value The ‘whole You’An innovative and entrepreneurial work environment that promotes ingenuity and individuality - with the best of colleagues, and the best of clientsHybrid work models and flexible hours, plus a work from anywhere policy for short-term stays in other regionsGenerous Vacation starting at 3 weeks + 1 extra week over the holidaysAgency summer days (exact policy differs per campus and agency)Modern, open co-working spaces with coffee & snack bars, located in great city neighborhoods, close to shops and restaurants and easy access to public transportDogs allowed, dedicated Play Room to support families and Private wellness room (in select offices)Team social events - holiday parties, seasonal gatherings, weekly happy hours, inspiring speakers and more!
We are obsessed with learning and being better humansIn-house learning & development sessions and annual career and growth conversations’Access to internal network of opportunities across all agenciesFocus on developing BIMPOC Talent via our BIMPOC Mentorship ProgramInternal EDI group(s), programs & initiatives across Plus Company and opportunities to be involved in employee resource group(s)
Check out our EDI report here to learn more about our work and commitment towards equity.
We invest in your health and wellness:Flexible benefits to support your individual lifestyle and life stage – with access to a personal wellness spending account you can use for a wide range of wellness expenses, including gym membership fees, pet care, education expenses, and much more!Comprehensive mental health support including access to a virtual mental health therapy clinic providing you with personalized therapist guided iCBT programs and live therapy, access to health clinicians 24/7, and a holistic array of other health and wellness resources to support you and your family.Dedicated play rooms for days you need to bring the kids and health and wellness rooms when you need a place to get grounded.A responsible sick & personal absence days policy designed so you don't have to worry the moment a personal obligation or emergency arises.Maternity leave top up program.
Expiry Date Notice: This job description expires on November 13th 2026
We’re humbled by the number of talented people who apply to work with us every day. And, we thank each and every one of you. Truly. We’ll reach out directly to those we’d like to meet for an interview.
To ensure a fair and consistent evaluation for all candidates, our interviewers are supported by an AI tool that securely takes notes during the conversation
Creating meaningful work means embracing different perspectives. We are an equal opportunity employer and do not discriminate based on age, colour, ability, national origin, race, religion, sex, or sexual orientation. Not only are these provisions protected by provincial and federal law, embracing difference is what makes Cossette what it is—and we wouldn’t have it any other way. We pride ourselves on our inclusive and accessible workplace. If you need any accommodations during the interview process to make it work for you, let us know.
By joining Cossette, you become part of Plus Company, a unique partnership of forward-thinking creative agencies. As a network, we unabashedly believe anything is possible. Why? Because possibility is what powers the big dreams and limitless drive of an entrepreneur. And entrepreneurial agencies are what we’re made of. A whole network of them.
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