Senior Copywriter

Critical Mass; Chicago (IL); On-site; USD 80,000 - 110,000; Full time

Benefits offered by this job

Global maternity and parental leave

Competitive benefits packages

Vacation, compassionate leave, sick/p;

Early Dismissal Friday’s (off at 3:00 

12 affinity groups

Internal learning and development

Enterprise-wide employee discounts

In-office requirement: 3 days/week (3+

Job summary

Critical Mass in Chicago is seeking a senior copywriter with leadership potential. You craft clear, compelling copy across social, web, and campaigns, and guide junior creatives while partnering with art directors and designers.

This role values rapid iteration and strong client storytelling, with a focus on staying ahead of cultural trends and tech developments. You will mentor peers, present work confidently to clients and teams, and help shape the voice across multiple channels and formats,

Qualifications

• 3 years of agency experience.
• Mentored other creatives by proximity and formal channels.
• Experience with production vendors including video production, video editing, voiceover and mix.
• Ability to present, defend and sell creative work internally and externally.
• Written for many mediums with versatile tones and headlines.

Responsibilities

• Drive in the development of creative ideas that solve client briefs, solo or with partners.
• Write clear, compelling copy that supports campaign objectives and resonates with audiences.
• Collaborate across disciplines with art directors and designers to meet client needs.
• Seamlessly move from brief kickoff to high-caliber work for creative reviews.

Skills

Agency copywriting

Mentoring

AI awareness

Tools

Video production

Video editing

Voiceover

Mixing

Job description

Job Description

This role is for someone with rich copywriting experience and demonstrable skills of a growing creative leader. You are virtuosic in your craft, capable of delivering on any number of creative asks with speed, accuracy and style. Confident in your copy, you’ve begun your initial journey into creative leadership.

Agency

Critical Mass

Job Function

Creative

Job Subfunction

Copywriting

You Will

• Love digital. A lot. Social, web, AI, gaming. You don’t have to be an expert, but you do have to care.
• Drive in the development of creative ideas that help solve client briefs, both solo and with creative partners.
• Write clear, compelling copy that supports campaign objectives and resonates with target audiences. Self-edit and incorporate feedback and revisions into existing work and ideas.
• Stay on top of cultural trends, technology developments and audience insights as they pertain to the work.
• Stay informed about copywriting best practices and industry developments.
• Work with team leads and career developers to grow your understanding of the business.
• Collaborate closely across disciplines with art directors, designers, and other specialists to solve stated and anticipated client needs.
• Seamlessly move from brief kickoff to having work high caliber enough to share in a creative review.

You Have

• Thought about creative opportunities with new technology, such as AI agents or automated workflows.
• Developed and mentored other creatives both by proximity and through official channels.
• Experience working with production vendors including but not limited to video production, video editing, voiceover and mix.
• The ability to present, defend and sell creative work internally and externally.
• Written for many mediums and in many tones of voice. Headlines come to you in your sleep. Post copy is your middle name. Scripts flow from you like your favorite story to tell at parties.
• The ability to spot a strong insight and/or big idea.
• The ability to manage multiple projects and deadlines without losing the quality of the work.
• 3 years of agency experience.

What We Offer

• Global maternity and parental leave
• Competitive benefits packages
• Vacation, compassionate leave, sick/personal days
• Access to online services for families and new parents
• Early Dismissal Friday’s (off at 3:00 PM local time every Friday)
• 12 affinity groups
• Internal learning and development programs
• Enterprise-wide employee discounts
• Our new hires & employees are the future of our organization, and we want to set you up for long-term success. In an effort to do so, we expect our team to work from an office a minimum of 3 days a week. Chicago: $80,000-$110,000

Company Policy and Culture

Omnicom’s policy requires employees to work in the office for a minimum of three days a week, unless additional in-office days are directed by their agency or manager. Our objective is to increase this requirement over time, and many of our agencies as well as Omnicom’s corporate group already require five days of in-office attendance.

Omnicom is committed to hiring and developing exceptional talent. We agree that talent is uniquely distributed, and we’re focused on developing inclusive teams that can bring the best solutions to everything we do. We strongly believe that celebrating what makes us different makes us better together. Join us—we look forward to getting to know you. We will process your personal data in accordance with our Recruitment Privacy Notice.

Link to Recruitment Privacy Notice: https://www.omc.com/privacy-notice

For US Job Seekers

It is the policy of Omnicom and any of its affiliates to provide equal employment opportunities to all employees and applicants for employment without regard to race, religion, color, ethnic origin, gender, gender identity, age, marital status, veteran status, sexual orientation, disability, or any other basis prohibited by applicable federal, state, or local law. EOE/AA/M/D/V/F.