UPSIDER goes beyond
either/or.
A discontinuous future lies only beyond reconciling contradictions.
The speed where today's conclusion becomes tomorrow's implementation, and the rigor of a financial institution entrusted with companies' funds. The drive to break past your own limits every quarter, and a way of working that never gives up time with family. The closeness of a startup where founders decide and move together with you, and the scale of transforming financial infrastructure with Mizuho FG.
UPSIDER is looking for challengers who transcend the world's “either/or.”
Challenging, each with their own expertise
Teammates who resonate with UPSIDER's mission and, each with their own expertise, keep striving to transcend binary opposition. Experienced talent and people with fresh perspectives come together to build an environment where we elevate one another.
Engineering
Delivering new financial experiences by balancing speed and reliability
Data
Building next-generation AI credit models, ML infrastructure, and data platforms
Credit
Credit assessment and risk control that fuse the power of people and AI
Legal
Scheme design for new businesses and partnerships, drafting and reviewing contracts and terms, handling financial-industry regulations, and debt recovery through legal proceedings
Risk & Compliance
Building and operating offense-minded risk management and compliance
Internal Audit
Building and operating the internal audit framework
Accounting & Corporate Planning
Building the finance and accounting foundation that supports challenges toward the future
People & Recruitment
Organizational development, recruitment, and culture-building
Five businesses that empower challengers
Cards, payments, debt financing, platform, and community — five businesses that support challengers from every angle.
Card Business
Centered on the UPSIDER Card, we deliver a breakthrough corporate card solution for growth companies — pairing overwhelming credit limits with real-time governance to support each company's growth from the ground up.
Shall we start with a casual chat?
If UPSIDER has caught your interest but you're unsure whether to apply, or you're interested but not sure which position fits you, please feel free to use our casual interview. You can clear up any questions before sitting down for a formal interview.
Book a casual interview
UPSIDER's Culture
Our culture at UPSIDER is our very DNA—what we like, what we don't, and how we behave. No matter how much our headcount or the scale of our services changes, UPSIDER cares about staying true to who we are.
BE UPSIDER
Our customers and we ourselves are challengers who create new value and change. Regardless of background or title, each of us keeps evolving every day. Those who are never satisfied with the status quo and forge their own path are “Be UPSIDER.”
"WE" PEOPLE
A startup means boarding the same ship as your teammates and riding out the rough waves together. Rather than putting ourselves first, we support one another with “we” as the subject. Those who help others and can honestly rely on those around them are “We People.”
AI NATIVE
To maximize human potential, we work with AI not as a mere tool but as a “reliable colleague.” Those who bet all of their human time on questions without right answers and on creating essential value, and who keep evolving alongside technology, are “AI Native.”
Sustainable hard work
— Building an environment to work hard, for the long haul —
UPSIDER's challenge is by no means a sprint that ends in a few years. What we seek is not burnout from a momentary frenzy, but sustaining high performance as a professional over the long term. We refuse to give up on the balance between stimulating work and a fulfilling life. Career paths bring life-stage changes. Even so, we want to be a place where you never have to stop moving forward. Because we believe people can only unleash their best when their physical and mental health and time with loved ones are fulfilled. What follows are not merely measures to make work easier. They are investments—for those who want to give their all at every phase of life—that let you keep taking on work in peak condition.
Full Flextime
No core hours. Commit to the team's results while performing at your best on your own rhythm.
「子育て×スタートアップ」って本当に両立できるの？激動の日々を乗り越える4人の工夫
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Fully Remote
No location constraints. We provide an environment where you can do your best work from anywhere. Coming into the office is just one option.
「実際、働きやすい？」地方リモート勢が聞く、UPSIDER QAチームのリアルな仕事環境
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Work Style
Full Flextime
You can work without core hours, except late at night and early in the morning. Teamwork and a commitment to results come first, with the flexibility to balance private plans such as medical appointments and school pick-ups and drop-offs.
Hybrid: Remote & Office
A hybrid style that makes the most of remote work while valuing in-person collaboration. Office rules vary by team—from fully remote to coming in 3–4 days a week—so each team deepens discussion and collaboration in the way that suits it best.
AI Environment
We provide tools suited to each team, such as Claude and GitHub Copilot. An AI-enabled environment for every employee.
Side Work Welcome
We welcome challenges and learning outside the company, too! We value the synergy with your main role.
Time Off
Startup Leave
Leave you can use right after joining—before annual paid leave is granted—when you need time off for reasons such as illness or childcare. Three days are granted as soon as you join.
Summer Leave
Leave you can take on your own timing between July and September. Three days are granted each year.
Maternity & Childcare Leave
We have programs that support life-stage changes, including maternity, childcare, and family-care leave. Many male employees have taken childcare leave, too!
Menstrual Leave
You can rest comfortably, in line with how you feel. Up to one day is available as paid leave.
Congratulatory & Bereavement Leave
Leave that stands with you at life's milestones. Available as paid leave.
Growth & Connection
Study Sessions & Community Activities
We encourage learning from one another across all roles, supporting participation in training and events both inside and outside the company, such as lightning talks and study groups.
Team-building Gatherings
We subsidize team-building costs. The company covers expenses for group- and department-level kickoffs and social gatherings.
All Hands Meeting
A place to share direction and results company-wide and align in the same direction.
Interview Process
We welcome the use of AI in interviews
As a company that champions being AI Native, UPSIDER welcomes the use of AI tools even in skills interviews! Your ability to make the most of AI is part of what we evaluate.
Resonance with our mission
We value your resonance with—and commitment to—our mission: “To create a world-class financial platform that supports challengers.”
Culture match
To work hard for the long haul, we believe nothing matters more than culture match. Let's take the time to carefully get to know each other's values.
* The process above is the standard flow. Steps may vary by team or role.
FAQ
Selection Process
What is the selection process?
Can I apply for multiple positions?
What if I'm unsure which position to apply for?
How are application documents handled and returned, and how is personal information managed?
What should I prepare and wear on the day of the interview?
Work Environment
What are the working hours?
How often do people work remotely?
Tell me about the offices.
UPSIDER has offices in Roppongi, Shibuya, and Osaka. On regular office days, members gather at the open, spacious Shibuya office, where lively cross-departmental communication takes place. The offices use free-address seating and are equipped with private booths. There are also coffee machines and a small in-office convenience store, making for a comfortable environment.
- Roppongi Office (HQ)
- Shin-Roppongi Bldg. 811, 7-15-7 Roppongi, Minato-ku, Tokyo 106-0032
- Shibuya Office
- 7F Daiwa Shibuya Miyamasuzaka Bldg., 2-16-1 Shibuya, Shibuya-ku, Tokyo 150-0002
- Osaka Office
- 2F KT Building, 2-5-4 Hiranomachi, Chuo-ku, Osaka 541-0046
What benefits do you offer?
What are the working styles of employees who are married or have children?
Are side jobs allowed?
What communication tools do you use?
Can I choose my PC?
Programs & Benefits
Tell me about the annual paid leave system.
After three days of Startup Leave (special leave) granted upon joining, employees who have been with the company for six months and have worked at least 80% of scheduled working days are granted 10 days of annual paid leave. Thereafter, leave is granted for each additional year of continuous service as follows.
| Years of service | 6 months | 1.5 years | 2.5 years | 3.5 years | 4.5 years | 5.5 years | 6.5+ years |
|---|---|---|---|---|---|---|---|
| Days granted | 10 | 11 | 12 | 14 | 16 | 18 | 20 |
Open Positions
