trading engines Matching engines & trading platforms
Lock-free order books, low-latency execution, deterministic behavior under heavy load.
- → Sustained high throughput
- → Predictable p99 latency
- → Zero-downtime deploys
umber.tech · since 2018
We build high-load financial infrastructure. Engineered to scale.
Trading engines, payments, crypto — engineered for uptime and scale by 20+ specialists, headquartered in Estonia.
you have a system to build clients
Architects for critical financial infrastructure.
- Dedicated team or project-based
- 24/7 support · 99.99% uptime
- Partnership model, not vendor
you want to build them with us engineers
We hire Middle+ who care about the nuance.
- Matching engines in C++ / Go
- Architecture reviews, not ticket-shuffling
- Autonomy, code review, serious deadlines
99.99%
uptime
3.4M
users served
$2.1B
processed / yr
20+
specialists
7y
in fintech
4
open roles
referred by teams at —
typical projects
what we typically build
trading engines 
payment systems Gateways & payment routers
Multi-PSP routing with health scoring, retry ladders, and reconciliation across rails.
- → Higher approval rates
- → Resilient to PSP outages
- → Auditable money movement
crypto & risk Crypto venues & risk systems
Streaming risk, pre-computed margin, spot and derivatives venues, DeFi rails.
- → Real-time risk ticks
- → Reliable liquidations
- → Resilient under volatility
scope shapes the team — tell us what you're building and we'll propose the architecture
testimonials · what clients say
The team always overperforms on their tasks to get optimal results. To us and our clients, that is priceless.Max Frolov
They know how to make a complex product simple for the user. In my industry it’s highly important.John Whesker
We are pleased that our technical side is in professional hands and that our cooperation results in successful projects.Megane Fabron
We were satisfied with their work every step of the way.Belma Gultic
We are pleased with Umber work and we got the design we need.Aleksandr Kushchynskyi
01 / 05 Clutch review
5.0
services
what we build
01 Payments flagship Gateways · routers · reconciliation
02 Trading engines flagship Matching engines in Go / Rust · low-latency infra
03 Crypto & DeFi flagship Spot · derivatives · DeFi rails
04 AI in finance flagship Model integration · decisioning · workflow
05 Banking & Finance Banking apps · automation platforms
06 Compliance & Security KYC · AML · geoblocking · risk
07 CRM & back-office Classic CRM and internal operations systems
08 Analytics Dashboards · internal tooling
09 Architecture & Infra Architecture review · monitoring
10 Mobile Native and cross-platform
principles
Built to stay up.
It stays up
Built to survive failure — losing one component never takes the whole system down.
Your data stays locked down
Least privilege and MFA everywhere, with every access logged and audited.
Secure from the first commit
Security is built into how we ship — reviewed and tested, never bolted on after.
Recovery you can prove
Backups and disaster recovery that are regularly tested, not just assumed.
offices · clients
world · equirectangular ● office ○ client
- Estonia Headquarters EET · UTC+2
- California Client market PST · UTC−8
- Detroit Client market EST · UTC−5
- Singapore Client market SGT · UTC+8
HQ Estonia · delivering to 3 markets remote-first · 24/7 coverage
what we believe
Most fintech outages aren't bugs. They're architectural debt shipped two years earlier.
for clients
Have a system to build?
Tell us what you're building. You'll hear back from engineering within
one business day.
Start a project → for engineers
Want to build them with us?
Middle+ engineers who care about the nuance. The first call is
technical, not HR.
See open roles →