We buildhigh-load systems, end to endfor fintech and enterprise

Senior-led engineering for mission-critical backend systems and the interfaces on top of them

Legacy modernizationBackend architectureEvent-driven systemsHigh-load applicationsData platformsAI-assisted software development
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our main strategy

Our engineers have shipped inside banks, payment platforms and exchanges — where a failed release is an incident report, not a rollback.

We bring that standard to companies hitting the same constraints: legacy platforms modernized under load, event-driven architectures that hold at peak, data pipelines that keep reporting off the transactional path, and the interfaces on top — with senior ownership on every decision.

What you get when you plug our team into your stack:

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our technology expertise

Develop scalable, secure, and high-performance backend applications with Java.

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solutions we've built

GPW

Visit site

The Warsaw Stock Exchange operates the trading infrastructure for Poland's capital market.

Industry
Capital markets / Exchange
Engagement
21 months
Scope
Trading system services and deployment

Work sat in the Trading Systems Development Department, on the services around the trading engine and the pipeline that puts them into production.

What happened

In an exchange, slow is the same as wrong

  • Trading systems are judged on latency and predictability, not average throughput.
  • Inter-service communication over conventional REST added overhead the system could not spend.
  • Access to trading functions needed authentication strict enough for a regulated market venue.
  • Performance problems had to be found before the market opened, not reported after.

What we did

Cut the overhead, made releases routine

  • Built RESTful services in Java and Spring Boot for the trading platform.
  • Introduced gRPC for inter-service communication, reducing latency between services.
  • Designed OAuth2-based authentication for secure access to trading functions.
  • Set up monitoring of memory, CPU and network behaviour, so bottlenecks surfaced from data rather than from incidents.

Technologies

  • Java
  • Spring Boot
  • gRPC
  • OAuth2
  • REST
  • Docker
  • Jenkins
  • Git

more than 30+ satisfied clients

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how we deliver

Discovery

We map your goals, constraints and current architecture — including what you already tried and why it didn't hold.

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engineering services

Our Discovery & Scoping Process

Every engagement starts the same way: we work out what needs building and what it will actually take, before anyone commits.

  • The Landmark Site

    By project

    • Custom frontend build, end to end
    • Brand identity carried through every breakpoint
    • CMS setup and content modeling
    • Performance and Core Web Vitals on launch day

    Brands ready for their flagship online

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  • The Landmark Brand

    By scope

    • Everything in The Landmark Site
    • Visual identity development
    • Motion language defined
    • Typography and design-system foundations

    Brands redefining identity alongside the site

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  • Quoted

    Per engagement

    • Multi-site systems and brand microsites
    • Campaign and hero engagements
    • Scoped per engagement
    • Six to twelve weeks per surface, typically

    Multi-site, campaign or hero engagements

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