As a trading software development company, we design and build trading platforms, stock trading apps and investment tools for brokers, wealth managers and fintechs. We settle who executes the orders, which market data is licensed and what the regulator will read before the screens, then build in stages.
Reviewed by Mayursinh Jadeja, Founder · Last updated November 2, 2026
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Trading software development means designing and building the platform a trader or investor uses to see the market, place orders and track a portfolio, with the systems behind it. The screens are the visible tenth. The rest is order execution, market data, accounts and records, and each of those belongs to someone outside the codebase.
The order goes to a broker. Either the client holds its own broker-dealer registration, and with it the market access rule and its pre-trade risk controls, or it builds on a partner broker’s API and inherits that broker’s order types and account model. The prices come under an exchange license that charges display and non-display use differently. The records go to the regulator.
So at Redlio Labs we settle those three before the feature list. We map the execution path, the data license and the record keeping with the client’s compliance team, then design and build the platform around them. Our TradeSync trading platform design sets out the same order of work.
This is part of our fintech software development work and our custom software development practice: the same team designs the screens and builds the platform, with code, accounts and data in the client’s name.
We offer six kinds of trading platform development, and a project can take any mix of them, from the trader’s screen to the back office behind it.
Client projects are told from the client’s own review. Design work is shown as work, with no client result claimed.
Design work
A stock trading platform UI for tablet and desktop, and the build plan behind it.
Design work
A crypto portfolio dashboard, and the wallet sync, prices and ledger behind it.
Design work
A dark mode crypto wallet app, and the keys, chains and sending behind it.
“Redlio Labs successfully delivered the project within schedule; they met all of our requirements. Their quality designs and in-depth knowledge of technology were key elements of their work.”
Verified review on Clutch1 / 4
Thirty minutes on who trades on the platform, who executes the orders and which market data it needs, ahead of any proposal. Every inquiry gets an answer within 12 hours and an NDA ahead of the call, then a plain view on whether we are the right team.
Mayursinh JadejaFounder
We compare the three routes before the feature list. The route decides the licenses, the order types, the account model and most of the testing.
| The client’s own broker-dealer | A partner broker’s API | A white label trading platform | |
|---|---|---|---|
| Who executes | The client, under its own SEC and FINRA registration | The partner broker, which holds the registration and the accounts | The vendor’s broker or the client’s, through the vendor’s system |
| What we build | The platform, order management, risk checks, the connection to the market and the records | The platform, onboarding and portfolio views over the broker’s order and account API | Branding, configuration and the integrations the vendor allows |
| Rules that land on the build | Pre-trade risk controls under the market access rule, best execution reviews, record keeping | The broker’s own compliance terms, which the platform must honor | Whatever the vendor supports, and nothing it does not |
| App store submission | From the client, as the licensed institution | Through the institution providing the trading service, as Apple requires | From the licensed institution, under the vendor’s app or the client’s |
| The real risk | The longest scope: licensing and clearing come before the first trade | A dependency on one broker’s API, products and pricing | A product that looks like every other one built on the same vendor |
Many fintechs start on a partner broker’s API with a custom platform on top, and move to their own registration once the volume justifies it. We design the data model so that move does not mean a rebuild.
Before the feature list
Each takes an hour to agree at the start and months to unpick once traders hold positions on the platform. We agree them with the client’s team and write them into the scope.
Each point comes from FINRA’s, the SEC’s, NYSE’s, Apple’s or Google’s own documents, read on November 2, 2026. They apply whoever builds the platform, so we advise putting each one to any supplier before the estimate.
We work through all eight in discovery and write the answers into the scope, so the estimate already carries them. The store rules for trading apps are set out in more detail on our TradeSync case study.
Three cases where we advise a different route:
Custom trading software development is the right choice where the order flow, the asset mix, the data or the client experience is what sets the business apart, and the execution route is already settled.
Step 1 of 5
We map your workflows, systems, and constraints with the people who use them every day, before anything is scoped. For a trading platform: we map the execution route, the asset classes, the market data license and the records the regulator will read.
Discovery
Step 2 of 5
We write a scope, a timeline, and a price for that scope. Architecture decisions are made and documented before code starts. We write down the order types, the broker or FIX connections, the data feed and the audit trail, and price the build against them.
Scope and plan
Step 3 of 5
Senior engineers deliver in planned stages, with working software demonstrated at every step, not a reveal at the end. We build in stages against the broker’s sandbox or a simulated market, testing real order scenarios, rejections and partial fills from the first stage.
Build in stages
Step 4 of 5
Data migration, training, and a production cutover planned around your operations and your calendar, not ours. We prepare the store submissions from the licensed institution, the delay notices the data license requires and the compliance sign-off.
Launch
Step 5 of 5
The team that built your system stays on it: monitoring, support, and the next improvements on one roadmap. We monitor the order path and the data feed, and plan each broker API or rule change before its deadline.
Run and improve
What custom software costs by Clutch’s 2026 data, what developers charge by the hour, what moves a system above the typical band, and the research on why quotes for the same brief differ so widely.
Mayursinh Jadeja
Is it better, or cheaper, to build or buy? The statistic the debate leans on, traced to its source. Then who publishes the advice, a real project that went custom, the boundary no comparison prices, and what it costs to change your mind.
Mayursinh Jadeja
What one client who interviewed fifteen vendors chose on, why the usual checklist could not separate them, the three tests that can, and the eight questions to send every vendor in writing.
Mayursinh Jadeja
If something here does not answer it, ask the founder directly.
Talk to the people who do the work
A 30 minute scoping call with the team that would take the project on. We reply within 12 hours.
Prefer email?info@redliolabs.com
Trading software development is the work of designing and building the platform people use to see the market, place orders and manage a portfolio, with the order management, market data, accounts and records behind it. It differs from other software work in one way: the broker, the data license and the regulator each control part of the build. We plan those first.
No, a trading platform can launch without its own broker-dealer license if it builds on a partner broker that holds the registration and the accounts. The partner executes the orders and its terms shape the product. A company holding its own registration gains control and brings the market access rule, best execution and record keeping into the build. We set out both routes in the comparison above.
We price trading software development against a written scope, so no figure is honest before scoping. The execution route, the asset classes, the market data license, the broker or FIX integrations and the compliance records move the price most, and the screen count moves it least. Our guide to custom software development cost lays out what to compare across quotes.
A trading platform needs a licensed price feed, real time or delayed, for every instrument it shows, and often historical data for charts and backtesting. The license matters as much as the feed: exchanges charge display and non-display use differently, and delayed data must carry a delay notice on every screen. We choose the feed and the license in discovery.
We set the timeline in discovery, once the execution route, the asset classes and the data feed are fixed, because those decide it more than the screens. A custom platform on a partner broker’s API is the shorter route; a platform on the client’s own broker-dealer adds licensing, clearing and market connectivity. We release in stages so the first version reaches users sooner.
Use a white label trading platform when the product is close to what the vendor sells and launch speed matters most. Build custom trading software where the order flow, the asset mix, the data or the client experience sets the business apart, or where license fees outgrow the cost of owning the software. A hybrid, a custom front end on a partner broker, often sits between the two.
We build a stock trading app in this order: settle who executes the trades and which market data to license, design the chart, order and portfolio screens, connect the broker API and the data feed, add accounts, KYC and audit-ready records, then test real order scenarios before the store submission. Apple requires that submission to come from the licensed institution.
Yes, we connect trading platforms to brokers and venues through their REST or streaming APIs, or through the FIX protocol where the counterparty uses it. We build the order and execution management around that connection, with rejections, partial fills and reconnects tested against the broker’s sandbox before go-live.
Yes, we build algorithmic trading software for strategy rules, backtesting on historical data, alerts and automated order placement through a broker’s API, with pre-trade limits on every automated order. Strategies that compete on microsecond latency and co-located hardware are specialist infrastructure, and we say so before scoping.
Yes, our wealth management software development covers client portals, portfolio management, model portfolios, rebalancing and performance reporting, on the custodian’s or broker’s data. The assets stay with the custodian; the software reads positions, proposes trades and keeps the records.
Yes, our designers and engineers work from Ahmedabad, India, and we take on trading platform work for clients in the US and elsewhere. The people on the scoping call are the people who build the platform, and the code, accounts and data stay in the client’s name.
We advise choosing the company that can say, before it estimates, who will execute the orders, which data license the platform needs and how the records will be kept. The eight rules above are a fair test to put to any supplier. Our guide on choosing a software development company adds the checks that apply to any build.
Half an hour with the designers and engineers on the build team. We ask who trades on it, who executes the orders and which data it needs. A reply follows inside 12 hours, the NDA comes before we talk, and the answer on fit is an honest one.
Mayursinh Jadeja
Founder, Redlio Labs
