We are looking for a highly motivated individual to take charge of all paid media, with a focus on digital advertising. This role involves agile advertising planning (media plan), execution, and optimisation by quickly grasping the circumstances, trends, public sentiment, and daily life needs of Japanese consumers. The successful candidate will contribute to the growth and expansion of Octopus and the enhancement of the customer experience.

If the work of an "Octopus Digital Marketer" (which we will detail below), the"Octopus way," and the vision/organisational culture of Octopus align with the workplace and career prospects you are looking for, please contact us even if you do not possess all the skills and experience listed later. Let's have a chat first!

Things you should know about Octopus first:

Usually, this is where we would introduce Octopus as a company, but you may have already done some research by looking at our website. So, we will save the company introduction for the very end (with plenty of detail!) and first introduce some points that we want you to know - which are, in a sense, more important than the company introduction - as a potential future colleague.

We don’t use agencies.

We fundamentally do everything in-house that is physically possible: advertising, sales flyers, UX, development, media buying, etc. By doing so, we can thoroughly grasp and manage all stages of our corporate activities, enabling agile, flexible, and responsible work. You could say we are half "in-house agency," but the kind that doesn't require timesheets or suits.

We’re pretty obsessive.

We think about our customers a lot. A lot a lot. We answer emails from customers, we join in on social media (and I mean we, as leaders do), we think constantly about what makes great experiences, great stories and great reasons for people to join us. We observes, monitors, thoroughly researches society and people, and sometimes directly asks them to deeply consider "what people want right now."

Our daily work might feel, perhaps a bit dramatically, like racing at 200 km/h down an uncharted road with no map, no navigation, and only 50 meters of visibility ahead.

We have to be honest, we find that people from traditional businesses often struggle here. We don’t work to backlogs, we don’t write business cases but we prioritise effectiveness and efficiency above all else.

Instead of adhering to Instead of adhering to plans crafted months in advance, we focus on what is needed now - dynamically adjusting priorities in an agile loop.

We expect accountability without process, and responsibility without functional shoulder pads. We get stuff done by knowing what’s right, and sometimes that’s hard.

A Digital Marketer at Octopus is:

You’re a grafter, but you’re a smart grafter, you put effort where you know it delivers the most value - writing out an agenda for a meeting kills a little bit of your soul.

You've a burning desire to turn your skills to something meaningful. You enjoy the pace of the commercial world, but you’d rather not flog FMCG any more, you’d want to be delivering something more sustainable, digital experiences that the world and people genuinely need.

We’re looking for someone who knows their way around website and ad performance analysis, campaign optimisation, and acquisition/retention funnels. You can trot out some good metrics, but actually, what you really, really know is humans. You feel what a brand is. You get why people choose it (even when it seems illogical). And you’re just a little bit fascinated by why people make the choices they do in their real, chaotic daily lives- full of self-centered desires, love, loss, stress, and boredom.

What you'll need...

Experience in the energy industry or retail electricity sector is not required. However, we are looking for candidates who meet the following conditions, on the premise that they have a strong interest (intellectual curiosity), excitement, and ideas about energy, its future, and renewable energy

Native or native-level Japanese language skills.

To be a "Marketer" first, before being a specialist in a specific area of expertise.

Eager to grow and learn in a fast-paced environment, and willing to share that knowledge to contribute to the team's overall expertise improvement.

Able to work and respond with a stable mindset in an environment where priorities and action items change based on the situation, and where sudden ideas, proposals, or instructions may arise.

Able to proactively take action and communicate, seek support and advice, and flexibly, rationally, and creatively address matters in collaboration with various stakeholders, even without explicit in-house processes or guidelines.

Possesses an intuitive sense for Japanese culture, seasonality, market/consumer (societal) trends, and emotions. Constantly monitors "current trends," avoids being swayed by common wisdom or falling into typical patterns, and can explore/identify potential needs and growth opportunities and creatively think of and propose new approaches.

English skills: Intermediate level or higher is a plus. *Even if your current English level is conversational, we welcome candidates with a strong desire to learn, the passion and drive to improve their English skills, and the ability to communicate without hesitation in an international environment

What you'll do....

The "Octopus Digital Marketer" plays a crucial role in all aspects of modern "marketing," where "digital" is no longer a specialty but the foundational environment for all activities. This role is responsible for data-driven situational awareness, identifying growth opportunities and bottlenecks, and the relentless pursuit of necessary actions across all digital touch points and customer journeys where the brand interacts with customers, including Earned media (PR),Owned media, and CRM.

New Customer Acquisition: Execute overall advertising activities in Japan, and lead the optimisation of advertising and the entire acquisition journey by measuring effectiveness and sharing analysis with the team.

New Customer Acquisition: Lead the planning, execution, and reporting of promotional campaigns.

Customer Retention: Based on effectiveness measurements and analysis of customer journeys and site engagement related to retention, propose hypotheses and ideas, and collaborate with Owned Channel and UI/UX teams to contribute to retention maximisation.

SEO/AIO: Continuously plan, execute, and optimise actions to create effective synergy between Paid and Owned channels by sharing and exchanging the latest knowledge and information with the Owned Channel team.

Ensure consistent brand tone of voice (new services/products, media releases, etc.).

Lead the optimisation of the technical/engineering aspects supporting the digital marketing foundation, such as Google Analytics design, website metadata optimisation, CMS SEO design, and data tracking features, in collaboration with front-end team members.

Conduct regular, comprehensive review and verification of new digital sales channel development and analysis tools for digital channels, including Owned/Earned, that should be introduced or replaced in the future. Also, exchange information and collaborate with the global digital team as necessary

💚 Why you will love it here:

Great Place to Work: An open, friendly environment awaits you, gathered under the motto of a socially significant mission, "Love and Power," and united by an insatiable thirst and passion for growth, along with a flexible workplace. We were named one of the "UK's Best Companies to Work For" in 2024 and one of The Times’ "UK’s top 10 Best Places to Work." Our Japan branch also received its first "Great Place to Work®" certification in August 2025.

Dry Stone Wall: Octopus does not have fixed career paths that confine employees to a uniform mold, thereby limiting individual unique characteristics and growth trajectories. Our fundamental philosophy is to utilise your original "shape" that defines you, and to jointly explore, custom-design, and place you in roles and career paths that fit well, adjusting as your growth, the business's growth, and the growth of other members evolve. Our Group CEO, Greg, discusses this in detail in the publicly available podcast, "Ep.1 Culture (English).

Relaxation is Key- There are no restrictions on the use of accrued paid leave, whether during or after the probationary period (of course, this is expected to be within reason and appropriately discussed and coordinated with your manager).

Office Environment- If you need any tools or technical support, we will do our best to implement them in the office. The office is always stocked with fruit, breakfast items, delicious coffee, and soft drinks. On Fridays, colleagues from various departments gather in the kitchen area after work. Grab your favourite drink and enjoy the internal exchange!

Our Career Page is full of information, including videos! Please take a look

Additional Information

About Us

"Octopus Energy" is an EnTech (short for Energy Technology) company founded in the UK in 2016. It has since grown to become the No. 1 electricity company by market share in the UK*1, providing affordable and environmentally friendly electricity to over 10 million customers in 18 countries worldwide.

The company launched its services in Japan in 2021 through a strategic partnership with Tokyo Gas. It is currently chosen by over 500,000 households domestically and is steadily growing at a pace comparable to its home country, having achieved a Google review score of 4.4. Furthermore, from 2022 to 2024, it was announced as the fastest-growing electricity company among Japan's top 40 electricity companies, with a growth rate of 1,137%*2.

One of Octopus Energy's strengths is its proprietary technology platform, "Kraken." Through cloud-based billing systems and the advanced utilization of data science, modeling, and AI, Kraken is redefining the possibilities and future of energy, making a significant contribution to the transformation of energy supply products and services mentioned above.

Upon a foundation supported by technology, Octopus Energy's agile and flexible business operations, combined with a corporate culture as a challenger and reformer, have led to many groundbreaking services.

At the same time, Octopus embraces the motto "Love and Power," a phrase that is the most frequently used within the company. We have a culture where all employees, regardless of job function, engage personally and carefully with each customer, supported by an operational and organizational structure that enables this. We take the lives and circumstances surrounding our customers as our own, imagine their needs, and provide heartfelt support, product/service development, and sales activities (Customer Love).

This might sound contrary to the pursuit of "efficiency" through technology, but it is precisely because advanced technology enables efficiency that we can provide personal, human-to-human customer service and establish a brand as an electricity company that customers become "fans" of.

*1: Based on Ofgem 'Retail Market Indicators' as of December 2023.

*2: Data Source: Agency for Natural Resources and Energy Electricity Survey Statistics Table [3-(1) Electricity Demand Results] for low-voltage lighting electricity demand (kWh) from January 2022 to December 2024. "Top 40" refers to the top 40 companies by total low-voltage lighting electricity demand from January 2024 to December 2024. "Growth Rate" is calculated by dividing the "Total low-voltage lighting electricity demand from Jan-Dec 2024" plus "Total low-voltage lighting electricity demand from Jan-Dec 2023" by the "Total low-voltage lighting electricity demand from Jan-Dec 2022."

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