Stock Trading Bot Development
Automated trading for stocks and ETFs built from your rules — intraday or swing, one symbol or a watchlist — with order handling, position sizing and risk limits.
Stocks · Interactive Brokers · DAS Trader · TradeStation
Automated Stock Trading — Stock Trading Bot & API Development
Hire a developer to build stock trading bots, broker API integrations, backtests, scanners and trade tools — for day traders, swing traders and small funds.
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Service overview
Custom Stock Trading Software for Traders and Teams
Bots, broker integrations and trading tools for US and global stocks.
Nordman Algorithms builds automated stock trading systems for traders, prop traders, small funds and trading teams. Our developers turn trading rules, a written specification or just a plain description into stock trading bots, scanners, backtests and trade tools — connected to your broker through its API or built into the platform you trade on.
Stock automation needs to account for pre-market and after-hours sessions, trading halts, day-trading limits on the account, short availability and many symbols to watch at once. We build around these rules and test on a paper account where the broker offers one.
Pre-market scanner · 08:42 ETGap ≥ 2% · Rel. vol ≥ 2×
SymbolGapRel. volStatus
TSLA+3.4%3.1×Gap & volume
AMD+2.6%1.6×Watching
NVDA+2.2%2.4×Gap & volume
AAPL−2.1%1.9×Gap down
TSLA · bracket order sent via broker API · entry, stop and target
Gap and volume filtersIllustrative
Stock development services
Stock Trading Bot & API Development Services
Bots, integrations, testing and trading tools for stocks and ETFs — built from your rules.
Broker API & Market Data Integration
Your strategy, application or database connected to a broker’s API for orders, positions and account data, plus historical and live market data from the broker or third-party providers.
Stock Strategy Backtesting
Historical testing with agreed assumptions for commissions, slippage, sessions and short borrowing. Split and dividend adjustments are defined upfront; a standalone backtester can be built when needed.
Stock Scanners, Screeners & Dashboards
Scanners for gaps, momentum, unusual volume or your own conditions, and dashboards that bring results, positions and account state into one view.
Trade Panels & Risk Tools
Tools for faster, safer manual trading — order entry, position size from risk, bracket orders and scaling — plus daily loss limits, trading-time windows and lockouts that stop over-trading.
Stock Signal Automation
Signals from TradingView alerts, Telegram or Discord checked against your sizing and risk rules and sent to your broker as orders.
Stock Trade Copiers
Trades copied between accounts or platforms, with symbol mapping, quantity ratios and position checks on every destination.
Portfolio & Rebalancing Tools
Target weights and allocation rules turned into rebalancing: proposed trades from current positions and cash, on a schedule or when weights drift.
Reporting & Analytics
Reports for your accounts and strategies: executions and trade history turned into P&L, performance statistics and records you can keep.
Stock Strategy Modification & Fixing
Changes and fixes to bots, scripts and studies you already use — new rules, risk settings, or code another developer left unfinished.
Have a stock trading task that is not on this list?
Tell us about it — a bot, a tool for your trading desk, an integration or changes to something you already run — and we will explain what it would take.
Stock capabilities
Stock Trading Automation Capabilities
Every project is built around its own rules. These are the capabilities stock bots, scanners and trading tools commonly combine.
Sessions
Market Hours & Sessions
- Pre-market and after-hours settings
- Opening and closing periods
- Trading halts and resumptions
- Holidays and half days
- Time zone of the exchange
Orders
Orders & Brackets
- Market, limit and stop orders
- Bracket and OCO orders
- Limit-only orders outside regular hours
- Partial fills and order updates
- Trailing stops and scaling out
Risk
Risk & Account Rules
- Position size from risk
- Daily loss and maximum position limits
- Day-trade counting for the account
- Short availability checks
- Lockouts and trading windows
Scanning
Multi-Symbol Scanning
- Watchlists and full-market scans
- Gap, volume and momentum filters
- Ranking and real-time updates
- Sector and ETF context
- Alerts on matches
Broker
Broker API Handling
- Authentication and sessions
- Reconnection and order status sync
- Rate limits and data subscriptions
- Paper and live accounts
- Symbol mapping between systems
Operations
System Monitoring & Alerts
- Telegram, email and push alerts
- Connection status monitoring
- Order and execution log
- Error and rejection alerts
- Process health and downtime alerts
Where stocks are traded
Stock Brokers & Platforms
A stock project takes one of three forms, depending on the task: an application connected to a broker’s API, a strategy running inside a trading platform, or an analysis tool for charts, scans and alerts.
Interactive BrokersBroker APIA broker with API access to stocks on many exchanges — through the TWS API and IB Gateway, or the Web API.
- Trading bots in Python or C#
- Historical and live market data
- Bracket orders and position sync
- TradingView alerts to IBKR orders
- Rebalancing and account reporting
DAS TraderDay-trading platformA platform built for active stock traders, extended with scripts inside DAS and external tools through its API.
- Advanced scripts and hot buttons
- Watchlist scanners with alerts
- Short locate automation
- Over-trading lockouts
- External bots through the DAS API
TradeStationStocks & futuresEasyLanguage strategies with automated execution, indicators and RadarScreen.TradeStation development →
thinkorswimCharts & scansthinkScript studies, scans and watchlist columns; automation through the Schwab API.thinkorswim development →
TradingViewAnalysis & alertsStock charts and Pine Script alerts; execution happens at the broker the alert is sent to.TradingView development →
QuantowerEquity connectionsScanners, indicators and trading workflows for stocks and ETFs, based on the data connection and order types of your account.Quantower development →
MetaTrader 5Exchange-listed sharesShares traded on an exchange through MT5 brokers with exchange connectivity — separate from share CFDs, which sit under forex.MetaTrader 5 development →
NinjaTraderThrough connectionsStock analysis and alerts; execution where the connection supports stocks.NinjaTrader development →Technology & connectivity
Stock Development Technologies & Integrations
We build standalone stock trading applications, broker integrations and data tools using the technologies below.
Broker APIs, data & backtests
Python
Bots on broker APIs, market data processing, scanners and backtests.
Explore Python →Desktop tools & broker apps
C# / .NET
Windows tools and background services for broker and day-trading workflows, including trade panels and applications that connect several systems.
Explore C# →Orders & account data
REST API
Orders, positions, balances and trade history through broker APIs such as Interactive Brokers, Schwab or Alpaca.
Explore REST API →Live quotes & updates
WebSocket
Streaming quotes and order updates for bots, scanners and dashboards, with automatic reconnection when a stream drops.
Explore WebSocket →Session-based order routing
FIX
Direct order routing and execution reports where a stock broker offers FIX to eligible accounts.
Explore FIX →Alerts to orders
Webhooks
TradingView and other alerts received by your server, checked against your rules and sent to your broker as orders.
Explore Webhooks →Development process
How a Stock Trading Automation Project Works
Every project starts with a conversation about the task and the approach. We then agree the rules, your broker and platform, the symbols and the acceptance checks before any code is written.
Project workflow
STEP 01
Rules or Existing Tool
Rules · existing code · examples
STEP 02
Scope & Broker
Broker · platform · account type
STEP 03
Fixed Quote
Scope · price · delivery schedule
STEP 04
Development
Python · C# · thinkScript · EasyLanguage
STEP 05
Testing
Backtest · paper trading where supported
STEP 06
Delivery & Support
Source · ready-to-use files · guidance
To Get Started
Send your trading rules or the tool that needs work, the broker and platform you use, and the symbols or watchlists it should cover.
Rules or Existing ToolBroker & PlatformSymbols or Watchlists
At Delivery
Receive the project source code, the ready-to-use files for your platform, templates where they are used, and a guide to every input. We walk through the specified behaviour and provide technical support under the agreed terms.
Source CodeReady-to-Use FilesTemplates if usedInput Guide
Why Nordman Algorithms
Why Work With Nordman Algorithms
Work with developers who build stock trading tools on broker APIs and day-trading platforms every day.
Broker and Platform Experience
We build for Interactive Brokers, DAS Trader, TradeStation and thinkorswim, so broker APIs and day-trading workflows are familiar ground.
Honest About Results
We make sure the software does what the agreed rules say. We do not sell profitable bots or promise returns.
Clear Scope and Pricing
Requirements, deliverables, fixed price and acceptance examples are agreed before development begins.
NDA and IP Ownership
An NDA is available on request. Source code and full IP ownership are transferred on delivery.
Support After Delivery
Installation help, input explanations and technical answers within the agreed support scope.
reviews
What Clients Say
Feedback from clients across our custom trading software projects.
★★★★★
Trustpilot
4.7
★★★★★
"It has been a pleasure working with Alexei and his team. They are professional and polite and always willing to go above and beyond to ensure the product and outcome is as per the clients requirements. …"
★★★★★
"The programmers were closely involved, resulting in short communication lines and a smooth completion of the project. What I particularly appreciated was that the process described on their website was exactly how it played out in reality. If reliability and keeping promises are important to you, Nordman is the place to be. …"
★★★★★
"I recently had a seemingly unsolvable issue with a trading strategy and appealed to Nordman for help. I was prepared to hire a programmer but Alexei at Nordman pointed me to a fairly simple solution and I wasn't charged. …"
FAQ
Stock Trading Automation Questions
Practical answers about stock trading bots, broker APIs and day-trading tools.
Yes. Describe your rules in a written specification or plainly — entries, exits, filters and risk. We build the bot for your broker or platform, backtest it where the project calls for it, and run it on a paper account where the broker offers one before it trades live.
Interactive Brokers and DAS Trader most often, as well as TradeStation, thinkorswim, TradingView and NinjaTrader where the connection provides stock trading. Other brokers with a documented API can be reviewed case by case.
Often yes, but the rules change outside regular hours: many brokers accept only limit orders, liquidity is thinner and spreads are wider. The bot can use separate settings for each session, as far as your broker allows.
Yes. It can count day trades and stop opening new ones before your account’s limit is reached, following the rules that apply to your broker and account type.
Yes. We test it in a separate historical simulation using suitable broker or third-party data, with commissions, slippage, trading sessions and split and dividend adjustments defined for the strategy.
Yes, where the broker offers API access. Alerts are received through a webhook, checked against your sizing and risk rules, and sent to the broker as orders — with notifications if you want them.
No. We verify that the software follows the agreed rules; whether a strategy makes money, and what it does in the future, is not something any developer can guarantee.
Yes — the complete source code, together with all rights to it, is handed over on delivery.
Tell Us About Your Stock Trading Project
Describe your strategy, the tool you need or the code you already have, and tell us your broker and platform. We will go through it and reply with the scope, timeline and next steps.
Free technical assessment
Clear scope before development
Post-delivery support