01
Fintech
Treasury platform for a Tier-1 APAC bank
12-week build · $400M weekly volume
Japan · Est. 2016A development studio of six
Software,
considered.
Built in Japan.
Lionstack is a six-person studio of senior engineers, designers and AI specialists —11 years of experience on average. We partner with founders and enterprise teams to ship the digital products their organisations are remembered for.
Now booking — Q3 2026
Two engagements remaining
06
Senior practitioners
47
Products shipped
12
Countries served
$2.4M
GMV influenced
Trusted by teams at
Standard Chartered
Carousell
Grab
Sea Group
GovTech
DBS
ByteDance
Patsnap
Engineering✦Design✦Strategy✦Applied AI✦Mobile✦Cloud✦
Engineering✦Design✦Strategy✦Applied AI✦Mobile✦Cloud✦
Manifesto · 001
We believe great software is felt before it is understood — that restraint is a feature, that craft compounds, and that small teams of senior people ship the work that lasts.
Tenet 01
Senior by default
No juniors stitched in, no offshore quietly shipping behind a partner's name. Every line comes from a practitioner with 11 years of experience on average.
Tenet 02
Japanese precision
Built in Tokyo with a standard of reliability and served to clients across timezones with the same discipline — measured, documented, calm.
Capabilities
Four practices.
One team.
01
Product Engineering
Web platforms, APIs and full-stack systems built to age well under load.
TypeScript · Go · Postgres · AWS
02
Mobile Applications
Native iOS and Android with the polish of a flagship product.
Swift · Kotlin · React Native · Flutter
03
AI Integration
Production LLM features, RAG pipelines and intelligent automations.
OpenAI · Anthropic · pgvector · Langchain
04
Design & Brand
Interfaces and identities that earn trust on first sight.
Figma · Design Tokens · Motion · Blender
Selected work · 2024 — 2025
A small body of work,
deeply built.
We engage with a deliberately small number of partners each year. Names are private under NDA — the outcomes are not.
02
Healthcare
Clinician copilot powered by domain-tuned LLMs
73% reduction in chart-time
03
Commerce
Mobile app rebuild for a regional marketplace
4.9★ App Store · 2.3× retention
Testimonials · Global
Trusted across borders.
Partners we have shipped with in the United States, Belgium, Japan and Ukraine — from stats platforms and POS to AI tools and mobile games.
“The most senior team I have hired in a decade. They shipped the unshippable, on the date we agreed, with code we still trust two years later.”
VP Engineering
Statxeo · United States
“Lionstack writes software the way an architect designs a building — every detail considered, nothing accidental.”
Founder & CEO
Statxe · United States
“They replaced an offshore team of fourteen and out-shipped them in the first month. Calm, exacting, completely senior.”
Chief Product Officer
Statxt · United States
“Working with Lionstack felt less like vendor management and more like hiring a second leadership team.”
Head of Digital
Budgetpixel · United States
“The most senior team I have hired in a decade. They shipped the unshippable, on the date we agreed, with code we still trust two years later.”
VP Engineering
Statxeo · United States
“Lionstack writes software the way an architect designs a building — every detail considered, nothing accidental.”
Founder & CEO
Statxe · United States
“They replaced an offshore team of fourteen and out-shipped them in the first month. Calm, exacting, completely senior.”
Chief Product Officer
Statxt · United States
“Working with Lionstack felt less like vendor management and more like hiring a second leadership team.”
Head of Digital
Budgetpixel · United States
“Six people delivered what a 30-person agency couldn't. The codebase is the cleanest I've inherited in fifteen years.”
CTO
Restaurant POS · Belgium
“Quiet, decisive, and obsessed with the work. They treat reliability and design as the same discipline.”
Co-founder
Retail POS · Belgium
“The strategic input alone justified the engagement. The shipped product was the bonus.”
Managing Director
Wafuu · Japan
“An unfussy, deeply professional studio. They earn trust quickly and never spend it carelessly.”
VP Product
Poker — Poker · Ukraine
“Six people delivered what a 30-person agency couldn't. The codebase is the cleanest I've inherited in fifteen years.”
CTO
Restaurant POS · Belgium
“Quiet, decisive, and obsessed with the work. They treat reliability and design as the same discipline.”
Co-founder
Retail POS · Belgium
“The strategic input alone justified the engagement. The shipped product was the bonus.”
Managing Director
Wafuu · Japan
“An unfussy, deeply professional studio. They earn trust quickly and never spend it carelessly.”
VP Product
Poker — Poker · Ukraine
