Services / Custom Development
Custom software for brokers, prop firms, exchanges, and hedge funds — built on a proven, reusable codebase covering order execution, risk management, liquidity connectivity, client portals, and more. Your budget goes toward what makes you different, not recreating infrastructure that already exists.
Capabilities
From execution infrastructure to investor-facing platforms — we build the software that runs trading businesses, whether you're an FX broker, a prop firm, a crypto exchange, or a systematic hedge fund.
Custom features, order types, risk overlays, and workflow automation built on Spencer Trader — or integrated with your existing platform of choice. From white-label configurations to proprietary UI layers, built to your exact trading model.
Real-time position monitoring, automated hedging logic, A/B-book routing, and back-office administration tools — built to your risk framework, not constrained by the defaults of an off-the-shelf system.
End-to-end prop firm infrastructure (challenge platforms, evaluation engines, funded account systems) and multi-account management systems with custom allocation logic, performance-fee calculation, and investor reporting — built for your model, not adapted from someone else's.
Custom extensions to Spencer Exchange, plus integrations between exchange infrastructure and brokerage or custody systems. Market-maker tooling, settlement workflow automation, and custom connectivity to institutional clearing and settlement networks.
Branded client portals, trader dashboards, KYC/onboarding flows, and CRM integrations — connected to your trading infrastructure and built to your compliance and UX requirements. Not a template. Not a SaaS wrapper. Purpose-built for your business.
The core advantage
Most trading technology projects start from zero. Every execution component, every risk engine, every liquidity connector, every onboarding flow — rebuilt fresh. And you pay for every hour of that work, whether it's the tenth time that component has been built in the industry or not.
Spencer Logic has spent years building, testing, and running that foundation across live trading environments. When you engage us for custom development, we start from production-hardened components. Your budget goes toward what makes your business distinct — not recreating infrastructure that already exists and works.
This is a structural cost and speed advantage. It compounds across every project we deliver, because each engagement improves the shared base that the next one starts from.
Starting from scratch
With Spencer Logic
Project examples
Every firm has different requirements. Here are representative projects across the capital markets stack — what was built, and what it delivered.
FX / CFD Broker
Custom commission-calculation system handling multi-level introducing broker structures with currency conversion, rebate schedules, and automated reporting. Replaced a manual reconciliation process that previously took 3 days per month.
Fixed Income / Derivatives
Full-stack IRS trading platform built around a Central Limit Order Book — covering order entry, matching engine integration, position management, and real-time risk exposure across swap tenors. Delivered for an institutional client requiring sub-millisecond matching and full audit trail for regulatory reporting.
Hedge Fund
Real-time position monitoring and dynamic order routing logic that classifies flow and executes based on configurable risk parameters — removing manual intervention from the execution workflow. Dealer workload reduced by over 60%.
Asset Manager
Bespoke performance-fee calculation with high-watermark logic, multi-currency support, and automated investor statements built on the Invest Social platform. Onboarded 40+ fund managers in the first month post-launch.
Crypto Exchange
Custom API layer connecting Spencer Exchange to a prime broker and two custodians — automated settlement reconciliation, position netting, and end-of-day reporting. Settlement exceptions reduced by 90% in the first quarter.
Fintech / Broker
End-to-end onboarding flow connecting a KYC provider, CRM, payment gateway, and trading platform — automated account creation, leverage tiering, and compliance-triggered group migrations. Onboarding time cut from 48 hours to under 10 minutes.
Our process
A structured engagement model that keeps projects on time, on budget, and aligned with your business requirements throughout.
We map your business logic, existing infrastructure, and integration requirements into a signed technical specification. This locks scope before a line of code is written.
Typical: 3–5 daysOur team identifies which components of the Spencer Logic codebase apply to your project, what needs custom extension, and what needs building from scratch. You get a clear breakdown of effort and cost before work begins.
Typical: 2–3 daysDevelopment proceeds in sprints with staged releases to a dedicated testing environment. You review working functionality at each milestone — not mockups at the end.
Typical: 2 weeksDeployment during a scheduled maintenance window with a rollback plan in place. Full documentation and operational runbook provided. Ongoing support available independently.
Typical: 1–2 daysEngagement models
We work on fixed-scope projects, retainer arrangements, and hybrid engagements depending on how your requirements are defined and how your team works.
Best for well-defined requirements and one-time builds. Fixed timeline, fixed price. Technical specification signed before work begins — no scope creep, no surprises.
Best for ongoing development needs, evolving requirements, or firms that want a dedicated engineering resource without hiring in-house. A set monthly commitment with predictable cost and consistent team access.
For firms that have their own engineering team but want access to Spencer Logic's domain expertise for architecture review, technology selection, or strategic platform decisions. Engagement-based, no long-term commitment required.
Technology
Every technology choice is made for performance, reliability, and the specific demands of live trading environments — from microsecond execution to institutional-scale data flows.
Platform
Spencer Trader
Platform
Invest Social
Platform
Spencer Exchange
Platform
Client & Broker Portals
Execution platform
MetaTrader 4 & 5
Connectivity
FIX Protocol
API
REST / WebSocket
Infrastructure
Equinix LD4 / NY4
It depends on scope, but Spencer Logic's reusable codebase typically delivers a 40% cost saving versus a comparable scratch build, because execution, risk, and connectivity components don't need to be rebuilt from zero. You get a fixed-scope quote after a 3–5 day discovery phase.
Discovery and technical specification take 3–5 days, architecture/codebase matching 2–3 days, and the build itself proceeds in roughly 2-week sprints with staged reviews — meaning most projects ship in about half the time of a greenfield build.
Yes — challenge platforms, evaluation engines, and funded-account systems are a standard capability, alongside PAMM/MAM and multi-account management systems with custom allocation logic.
Custom-built components developed specifically for your project are yours; the underlying reusable codebase components that accelerate delivery remain Spencer Logic's shared infrastructure. Exact terms are confirmed in the project agreement.
Fixed-scope is a one-time build with a locked timeline and price, ideal for well-defined requirements. A retainer is an ongoing monthly engagement for evolving requirements or teams that want dedicated engineering capacity without hiring in-house.
Yes — client portals, onboarding flows, and CRM integrations are built to connect with your existing compliance and payment stack rather than replacing it, as long as those systems expose an integration path (API, webhook, or similar).
All of the above. Past project types span FX/CFD brokers, prop firms, crypto exchanges (including custody and settlement workflow), asset managers, and hedge funds requiring sub-millisecond matching and full audit trails.