Security Engineer

Tokyo
Partial Remote
Full-time
January 20, 2026

Are you looking to:

Make meaningful changes at the fastest-growing tech company in Japan?
Work in a fair, highly flexible, and inclusive environment where anyone can make an impact?
Build the next bold idea in conversational commerce technology?

We Are Zeals – “Designing conversations. Driving conversions.”

Zeals is changing how consumers purchase online through AI-powered, human-designed conversation flows. With over 480 enterprise clients in Japan and nearly $40 million in recent funding (backed by Salesforce Ventures), we are poised for exponential growth in the US and global markets. Our goal is simple: to revolutionize hospitality on the internet.

Your Typical Day With Us

Assess & Test: Conduct vulnerability assessments and penetration tests on systems, networks, and applications.
Design Review: Review product designs and system architectures to identify security risks early using threat modeling.
Code Security: Perform source code reviews to detect flaws before deployment.
Incident Response: Investigate, analyze, and respond to security incidents and threats in a timely manner.
DevSecOps: Integrate automated security checks and testing into CI/CD pipelines for scalable security practices.
Guidance: Educate engineering teams through workshops and secure coding best practices.
Strategy: Analyze security metrics and trends to identify areas for improvement and adjust strategies accordingly.

What You’ll Need

3–5 years of experience in information security, network security, or a similar role.
Hands-on experience with threat and vulnerability management.
Proficiency in network and system security (Firewalls, IDS/IPS, VPNs).
Experience with security auditing tools and penetration testing.
Familiarity with security frameworks and regulations (e.g., NIST, ISO 27001, GDPR).

What Makes You Stand Out

Knowledge of cloud security concepts and experience working with cloud platforms (AWS, GCP).
Proficiency in scripting languages (Python, JavaScript, Golang) for automation.
Experience leading, executing, or coordinating security-related projects.
Relevant professional certifications (e.g., CISSP, CEH, CompTIA Security+, or GIAC).

Our Tech Stack

Languages: Go, Python, Elixir, TypeScript (React.js)
Infrastructure: Google Cloud Platform (GCP), Kubernetes, Terraform
Data & Search: MongoDB, MySQL, Postgres, BigQuery, Elasticsearch, Qdrant
CI/CD & Monitoring: GitHub Actions, ArgoCD, CircleCI, Grafana, Opsgenie

Perks & Benefits

Flexibility: Remote-first organization (in Japan) with interim work-from-overseas options.
Growth: Performance reviews twice a year and a competitive salary.
Support: Visa sponsorship and housing allowance (for those living within 1.5km of the office).
Time Off: 10 days annual leave (first year), 5 refreshment leave days, plus national and seasonal holidays.
Culture: Team building/lunch allowances and the "Zeals Bar" bi-monthly free-flow beer party.

Ready to roll up your sleeves?
We're obsessed with bringing hospitality to everyone. We promise a once-in-a-lifetime experience and coworkers you’ll be proud to brag about. If you're ready to change the status quo, join us!

APPLY NOW ➜

About Zeals

The #1 Japanese Conversational Commerce Solution.

ZEALS is not another chatbot. They are the #1 Japanese conversational commerce solution. Using AI-powered, human-designed conversation flows across chat platforms, ZEALS enables brands to build personalized, automated conversations with their consumers and develop a deeper understanding of their preferences while creating a delightful, seamless shopping experience.

Phenomenal Growth
Having nearly doubled revenue YOY the last few years, targeting a 290B TAM, ZEALS benefits from a strong product market fit, clear ROI tied to their solution, and high customer retention rates. With over 480+ enterprise companies currently using their product globally, including well-known brands like L’Oreal and Nissan, ZEALS is well positioned to capture market share and drive exponential growth both in the Japan and US market as their next target region. Investors have taken notice – they raised nearly $40M and were backed by Salesforce Ventures in May of 2022, and they are planning to use these funds to continue their aggressive investment in both technology and people.

ZEALS is Revolutionizing Hospitality on the Internet
ZEALS enables consumers to purchase and reserve products via a well-designed conversational experience. The goal is simple: to “revolutionize hospitality on the Internet,” unlocking digital customer service experiences that used to be limited to physical stores previously. By allowing customers to converse about their purchase before making it, purchase rates are increased by about 5 times, driving a 9.6% average conversion rate across 1.5 million monthly active users. ZEALS’ service is widely adopted across verticals including ecommerce/DTC, travel, cosmetics, fitness and fintech.

Won LinkedIn Top Startups Award Twice in a Row
ZEALS has received the LinkedIn Top Startups award twice in a row. They believe this is a testament to their growth and ability to attract great talents–who could potentially be your colleagues!

Opportunities to Socialize
ZEALS provide a club activity allowance, a “shuffle lunch” allowance for having cross-departmental lunches, and ZEALS Bar, free flowing beer party.

Japanese Language Policy
At ZEALS, the product and technology team members primarily speak English (dev-related discussions happen in English on Github or Slack). There might be occasional discussions in Japanese, but most Slack messages are in English (or both languages).

As for meetings, all dev-related discussions take place in English. Given the above, Japanese skills are not required for most positions in the Product & Technology departments. However, one unique aspect of ZEALS’ culture is the desire to increase teamwork and engage with each other, which is why many Japanese members are working on their English skills while many non-Japanese members also work to improve their Japanese skills.

In order to build a truly global team, ZEALS has many multilingual members that proactively support the rest of the team to ensure smooth communications.

Even outside of the Product & Technology departments, all important company-wide announcements are made in both English and Japanese. For example, hiring announcements, new product launches etc. are generally announced in both Japanese and English.

Also, simultaneous interpretation for presentations at large meetings and events is provided to ensure that everyone gets the information they need.
Paid Leave
- All Japanese public holidays off
- 10 days of PTO (awarded 3 months after joining) in the first year
- 5 refreshment leave days per year
- Summer Holidays, Year-end Holidays, Childcare Leave, Congratulations/Bereavement Leave
Benefits
Here are some examples of the benefits which full-time employees can receive:

💻 Loaned Laptops

🇯🇵 Translation Support (EN<>JP)

👶 Shorter Work Hours for Employees Taking Care of Children

👶 Parental Leave

👕 Flexible Dress Code

💜 Social Security / Insurance Benefits Included

🏥 Healthcare Insurance, Periodic Health Checks

💚 Pension Insurance

🚃 Commuter Reimbursement
Remote Work
Although ZEALS requires you to either be in or relocate to Japan, once you’re here, you can choose whether you work from home or in the office.
- Full-time employees in Japan can work from home or come to the office. Transportation reimbursement to and from the office is available and people living close to the office can receive a housing allowance.
- If you’re not based in Japan yet, you can work from overseas while we help you obtain a Japanese working visa.
- Work from your home country 2 months per year.
Work style
ZEALS is flexible when it comes to working hours. They have core time from 1:00pm to 3:00pm JST, but otherwise you’re free to set up your day however you want to meet the monthly working hour requirements.
Values

FROM ZEAL

< Passion >
Good things come from giving it your all

BET ON PARADOX

< Unorthodox >
Never settle for the established norm

UNITED WILL

< Team >
Teamwork is the heart of achievement

Office

The ZEALS office is in the heart of Tokyo, situated in Meguro, near Gajoen, a famous hotel known for hospitality. You can work from the office at a desk as well as use small booths or meeting rooms. You can hook your laptop to large screens and sit in Ergohuman chairs. Lounge areas and standing tables are also available. Everyone is free to choose the work style that works best for them, either full-remote or in the office.