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Lead Writer, Japanese Speaking

Mediabrands

London, England, United Kingdom (United Kingdom) permanent

Posted: December 4, 2025

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Job Description

About Us

KINESSO is the technology-driven performance marketing agency that sits at the very heart of IPG Mediabrands, providing actionable growth for both our agency partners and clients. We turn 'action' into 'outcome' for our clients, leveraging our unique capabilities in optimization, analytics, AI, and experimentation. KINESSO has brought together the collective power of what was formerly Matterkind, Reprise, and Kinesso under one collective entity that will serve as the most powerful delivery engine in the industry. We have extensive offerings spanning performance marketing and data and technology. Fuelled by a deep understanding of consumer behaviour, we offer an end-to-end engine of planning and optimization while also delivering on data-driven strategy for social platforms, actionable growth in e-commerce, and creating curated marketplaces specific to each client's function and needs. The company has more than 6,000 employees operating in more than 60 countries. Learn more at www.KINESSO.com

Role Description

Lead Writer

Responsible for producing best-in-class content, working across complex accounts and supporting on the management and development of junior writers.

Main Responsibilities

• Communicate effectively in Japanese, both verbally and in writing

• Managing 3-4 line reports

• Supporting our senior strategic team with content strategy, as required

• Creating best-in-class content for existing clients and mock-ups for prospects at pitch stage

• Helping to implement a consistency of style and produce content that’s immediately on-brand

• Working on more complex accounts, as required, researching, writing, proofing and editing content for B2C and B2B audiences across a range of sectors

• Producing different types of content, including case studies, interviews, how-to guides, blog posts, infographics, video scripts, quizzes and product descriptions, as required

• Developing style guides and TOV documents where these don’t already exist or need updating

• Running content workshops internally and with clients, as required

• Acting as quality control, having final sign-off on pages before they go live across a number of accounts to help maintain high standards

• Regularly reviewing the quality of the content produced by the writing team and feeding back

• Briefing in other writers, then editing and feeding back on their work

• Questioning what we do and why, to improve what we produce

• Representing the content team in client meetings, such as brand immersion sessions, as required

• Running your own accounts, where this makes sense

• Spotting opportunities for new business, along with upsells and cross-sells that will enhance existing clients’ performance

• Communicating with and working closely with other delivery teams, particularly SEO, PR and Design & Development

• Monitoring content trends and relevant industry news to ensure our approach is ahead of the curve

• Planning ahead and managing yours and your team’s workflow to ensure you meet deadlines

Reporting Lines

• On account-specific work, Lead Writers might report into Senior Content Editors and Content Editors, where they don’t already own the account

Employee Transparency

At IPG Mediabrands, we celebrate differences and believe this makes us stronger. IPG Mediabrands is an equal-opportunity employer and is committed to championing an inclusive culture that provides a sense of belonging for all our employees. We do not discriminate against any applicant based on age, disability, race, colour, ethnicity, national origin, gender, sexual orientation, gender identity, religion, belief, marital status or any other characteristic protected by law.

Please reach out to Ninette at [email protected] if you would like to have a confidential conversation regarding any adjustments that would ensure our recruitment process is accessible for you. Please note requesting a reasonable adjustment will not affect your application.

THE PERKS

We aim to provide all our people with a supportive and fun work environment where you can develop your full potential and benefit from the broad range of opportunities within the agency. When you join us, we want to make sure you feel valued – and that you are rewarded for your fantastic work. So, we also offer a range of benefits:

• Flexi–leave, with 25 days annual leave to be taken as the minimum. In addition to your holiday entitlement, the office usually closes between Christmas & New Year

• Free breakfast and free lunch

• Early finish Fridays

• Core Hours (Mon-Thurs, flexible start/finish times)

• Retail discounts

• Electric vehicle salary sacrifice car scheme

• Wellbeing programme, including Headspace & flu jabs

• Interest-free season ticket loan

• Paid time off for Volunteering

• Group Income Protection

• Life Assurance

• Private Medical Insurance or Health Cash Plan (dependent on level)

• Group Personal Pension Plan with matched contributions from 3-6%

• Generous Parental Leave & Pay

• Independent mortgage advice

• Financial education

• Employee Assistance Programme

• Free eye tests

• Flexible benefits including Dental, Travel insurance, Cycle to Work, Gym Discounts and many more!

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