Fintech & software engineered for trading.

Trading platforms and market infrastructure, engineered to spec.

Algorithmic trading stack →Scope an engagement

Our platform

Algorithmic platform

FIX / REST

Broker integrations

24/5

Production-grade SLOs

Zurich fintech engineering desk with code, charts and mountain view through a window

Defam · 03

risk-gateway.ts

1// risk-gateway.ts
2export async function gate(order: Order) {
3  await assertExposure(order, book);
4  await assertDailyLoss(book);
5  await assertVenueLimits(order);
6  return router.send(order);
7}

SLO · p99

18.4 ms

What it is

Built by people who run the desk.

We advise and build for institutions and trading firms that need bespoke market technology. From front-office execution interfaces to back-office connectivity, we ship production-grade systems that meet the demands of real capital.

An engineering practice for trading and fintech firms — built by people who run a trading desk themselves. We design, integrate and harden the systems that sit between a strategy and the market.

Who it's for

Proprietary trading firms scaling beyond off-the-shelf tools
Fintech product teams needing market-data and broker integrations
Asset managers modernising execution and reporting infrastructure

Reference architecture

From signal to venue, in five layers.

A blueprint we have shipped — each layer is observable, versioned, and replaceable without rewriting its neighbours.

Trader intentMarket

Capabilities

What we build.

Production-grade trading software — not prototypes that need a human babysitter.

01Custom trading platform design and development
02Our trading platform algorithmic strategies, indicators and plugins
03Broker, exchange and market-data API integration
04Order management and execution layer engineering
05Architecture review for latency-sensitive systems
06Engineering partnership for fintech product teams

Deliverables

→Production-ready trading and integration software
→Architecture documentation and runbooks
→Observability, alerting and on-call playbooks

Engagement process

Scoped, shipped, operated.

We don't ship a system the desk can't run. Every engagement hands over runbooks, alerting, and an on-call story.

01→
Scope
We map the trading workflow end-to-end — instruments, venues, data, latency budget, and the decisions the system must support.
02→
Design
Architecture is chosen for the actual workload, not the trend. We document interfaces, failure modes and the cost of every dependency.
03→
Build
Iterative delivery with versioned releases, automated tests and a staging environment that mirrors production behaviour.
04
Operate
Observability, alerting and runbooks ship with the system. We hand over a platform a desk can actually run, not just deploy.

Stack & tools

Defensible by default.

The technologies we reach for first. Every choice is documented against a real workload, not a trend.

Our trading platform
TypeScript
Python
Rust
PostgreSQL / TimescaleDB
FIX 4.4

Outcome

Market technology that behaves the way traders need it to — fast, observable, and accountable.

Defam AG · Fintech & Software Development Consulting

Questions

Frequently asked.

Do you take equity-only engagements?: Selectively. The default is a paid engineering contract with clear scope, milestones and intellectual property terms.
Can you work inside our existing stack?: Yes. Most engagements extend or harden existing systems rather than replacing them. We integrate where the cost of replacement isn't justified.
Do you build for retail brokers?: We focus on serious trading operations, but we regularly build our platform algorithmic strategies and tooling that run on standard retail-broker infrastructure.

Adjacent capabilities