
Join ATI
Join us to advance products with overwhelming ownership
About ATI
What We Value
We dive deep into our clients' businesses with overwhelming ownership, delivering value through engineering while eliminating the "unhappiness" that can surround the craft.
Partnership with Overwhelming Ownership
We engage with businesses as our own, transcending roles so that everyone involved in web and IT can face essential challenges. Engineers themselves drive everything from problem identification to improvement proposals, pursuing both quality results and fulfilling work.
Zero Distance Between Field and Management
Management including founding members still write code on the front lines, conducting design reviews and handling incidents. We ensure engineer-first decisions through speedy decision-making based on field awareness.
Project Selection Focused on Essential Value
We stand beside clients from design through delivery to address essential challenges. We decline projects with vague purposes or unrealistic schedules, building a healthy environment that sustains continuous growth.
Open Positions at ATI
We recruit across multiple specialties to solve business challenges with technology. We welcome people who act as true stakeholders, envisioning the value they want to deliver from a product perspective beyond years of experience.
For detailed job descriptions, please visit our Wantedly page (Japanese only).
View openings on WantedlyCulture
Work Style & Culture
We maintain close communication with engineering leadership even while fully remote, advancing both technology and business beyond fixed roles.
Management as Active Engineers
Management including founding members continue writing code on the front lines and make decisions with field awareness. We thoroughly create an environment where engineers take center stage.
Open Information Sharing
Daily sharing of knowledge and challenges in Slack technical and self-improvement channels. Questions can be discussed immediately, receiving feedback from experienced members.
Flexible 1-on-1s and Mentoring
Weekly 1-on-1s aren't fixed but can be selected from multiple seniors. You can grow while receiving multifaceted feedback on both technical and career aspects.
Overwhelming Ownership
Engineers handle everything from problem identification to improvement proposals, treating products as their own beyond roles. An attitude of achieving results centered on ownership is ingrained.
Support
Work Environment & Support
We prepare everything from project selection to benefits and work styles so you can work long-term.
Highly Flexible Remote Work
Choose your preferred environment - home, office, or coworking space. We respect work styles that maximize individual performance.
Balance of Efficiency and Comfort
Flexible schedule coordination with clients to maintain high productivity while minimizing overtime. Achieving work-life balance with well-defined boundaries.
Comprehensive Benefits
We provide Benefit Station membership, a corporate defined contribution pension plan, and flexible support for side jobs upon consultation so you can stay long term.
Team
Team Members
Engineers active on the front lines handle everything from management to development, and specialists amplify one another's strengths.

Koji Iwasaki
CEO / Engineer

Daisuke Tsukuo
Vice President

Yosuke Kasai
CTO

Hiroomi Sen
Tech Lead

Mizuki Ishii
Tech Lead

Yutaka Oguri
Engineer

Takumi Iwahashi
Engineer

Katsuya Fujimoto
Engineer / Instructor

Ryo Akiyama
Engineer

Naoya Yamagata
Engineer

Ryo Suzuki
Engineer

Koji Iwasaki
CEO / Engineer

Daisuke Tsukuo
Vice President

Yosuke Kasai
CTO

Hiroomi Sen
Tech Lead

Mizuki Ishii
Tech Lead

Yutaka Oguri
Engineer

Takumi Iwahashi
Engineer

Katsuya Fujimoto
Engineer / Instructor

Ryo Akiyama
Engineer

Naoya Yamagata
Engineer

Ryo Suzuki
Engineer
Start with a casual chat
Feel free to reach out with simple questions like "Does my experience fit?" or "How flexible is the work style?"