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Request for Quote (RFQ) Automated Portfolio Management Backend Development Project Overview We are seeking an experienced backend developer or small development team to build an automated portfolio management platform for a personal investment account. The system will automatically manage portfolio allocations, monitor positions, execute trades, and maintain audit logs based on configurable investment strategies. Please provide a detailed quote, estimated timeline, and proposed technical approach. Project Objectives Develop a backend automation service capable of: * Retrieving account balances and portfolio positions. * Allocating 70% of available cash to investments while maintaining a 30% cash reserve. * Maintaining a configurable 5% portfolio allocation to SpaceX exposure or a designated proxy investment. * Monitoring portfolio performance and dynamically reallocating capital. * Ranking stocks using multiple market signals. * Executing trades automatically according to strategy rules. * Maintaining detailed audit and transaction logs. Required Features 1. Portfolio Allocation Engine * Calculate target allocations based on available cash. * Maintain configurable allocation percentages. * Support future strategy modifications without code changes. 2. Position Monitoring * Continuously evaluate open positions. * Support configurable stop-loss and risk thresholds. * Automatically liquidate and replace positions when conditions are met. 3. Stock Ranking Engine The ranking engine should support configurable signals, including: * Momentum * RSI * Trading volume * Volatility * Recent price performance * Analyst ratings (if available) Example output: { "ticker": "NVDA", "score": 94.2 } 4. Daily Automation The system should execute automatically every trading day at 09:30 AM ET and perform: 1. Fetch balances 2. Retrieve positions 3. Review portfolio risk 4. Exit positions meeting sell criteria 5. Re-rank securities 6. Reinvest available capital 7. Rebalance portfolio allocations 8. Generate execution logs 9. Store trade history 5. Risk Controls The platform must include: * Market-open verification * Duplicate order prevention * Configurable maximum position sizes * Daily loss limits * Rate-limit handling * Failure recovery and retry mechanisms * Comprehensive audit logging Technical Requirements Preferred stack: * Backend: Node.js (NestJS preferred) * Database: PostgreSQL * Queue/Cache: Redis (optional) * Infrastructure: Docker * CI/CD: GitHub Actions * Monitoring: Grafana, Prometheus, or CloudWatch Alternative implementations in Python or Go will also be considered. Architecture Requirements The system should use a broker abstraction layer so trading logic remains independent of the brokerage implementation. Example: interface BrokerAdapter { connect(): Promise<void>; getAccount(): Promise<Account>; getCashBalance(): Promise<number>; getPositions(): Promise<Position[]>; placeBuyOrder( ticker: string, amount: number ): Promise<Order>; placeSellOrder( ticker: string, quantity: number ): Promise<Order>; } Important Note Cash App currently does not provide a public trading API. Please explain in your proposal how you would address brokerage integration and whether you recommend migrating execution to a broker that provides an official API. Deliverables * Complete source code * Backend API/services * Portfolio allocation engine * Stock ranking engine * Trade execution module * Scheduler/cron jobs * Database schema and migrations * Audit logging system * Configuration management * Deployment documentation * Docker configuration * Setup and installation instructions Proposal Requirements Please include: 1. Relevant experience with algorithmic trading systems. 2. Experience integrating brokerage APIs. 3. Recommended architecture and technology stack. 4. Estimated timeline. 5. Fixed-price quote or hourly estimate. 6. Examples of similar projects completed. 7. Post-launch support availability. We are looking for a long-term development partner with strong backend and fintech experience.
Project ID: 40547858
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219 freelancers are bidding on average $238 USD for this job

Hi, ★★★ Node.js Expert ★★★ 8+ Years of Experience ★★★ I understand you're looking for a robust backend solution for an automated portfolio management platform. To achieve this, I will develop a backend automation service using Node.js with NestJS, ensuring it can handle portfolio allocations, monitor positions, and execute trades based on your specified strategies. The system will include: - A Portfolio Allocation Engine to manage cash allocations and maintain configurable percentages. - A Position Monitoring feature that evaluates open positions and supports stop-loss thresholds. - A Stock Ranking Engine that utilizes multiple signals for ranking stocks. - Daily automation to execute trades and manage portfolio adjustments at market open. - Comprehensive risk controls to ensure safe trading practices. I will also ensure that the architecture allows for easy integration with brokerage APIs, addressing the Cash App integration challenge by considering alternative brokers with official APIs. The bid is preliminary and can be finalized after clarifying a few details to ensure we're fully aligned on the project: 1. What specific brokerage do you plan to use for trading? 2. Are there any additional features or integrations you foresee needing? 3. What is your preferred method for handling audit logs and transaction history? Ready to get started!
$30 USD in 30 days
6.9
6.9

Hi there, We’ve built multiple algorithmic trading platforms that fully automate trading strategies, including portfolio management, risk management, and broker integrations. We’ve integrated with brokers like Alpaca, Binance, and Tradier, and we’re well-versed in handling sensitive financial data securely. For your project, we can leverage our existing stock ranking engine, which uses multiple signals to rank stocks, and adapt it to your specific requirements. We also have extensive experience with CI/CD pipelines and can set up GitHub Actions to ensure your code is always production-ready. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best, Adil
$205.33 USD in 7 days
6.4
6.4

My name is Juan Pablo. I can build your Automated Investment Portfolio Manager backend under 1400 chars, keeping the architecture clean, modular and broker‑agnostic. I’ll use NestJS + PostgreSQL + Docker, with a daily 09:30 AM ET automation cycle. The system will fetch balances, evaluate positions, exit trades, re‑rank stocks, reinvest capital, rebalance allocations and store full audit logs. Allocation engine: 70% invested, 30% cash reserve, 5% SpaceX exposure (or proxy). All strategy parameters stored in DB for easy changes. Ranking engine: Momentum, RSI, volume, volatility, recent performance, analyst ratings. Output example: { "ticker": "NVDA", "score": 94.2 }. Risk controls: Duplicate‑order prevention, max position size, daily loss limits, retry logic, market‑open checks, full audit trail. Broker integration: Cash App has no API. I recommend migrating execution to Alpaca or Interactive Brokers. I implement a BrokerAdapter so your trading logic stays independent of the provider. Timeline: 4–6 weeks for MVP. Quote: 1,800–2,400 USD depending on broker + signal complexity.
$200 USD in 7 days
6.2
6.2

I WILL BUILD THIS AS A CONTROLLED TRADING BACKEND WITH SAFETY CHECKS FIRST, NOT A BOT THAT PLACES ORDERS BLINDLY. Hello! The key challenge here is not only ranking stocks and executing trades, it is making sure every allocation, rebalance, sell rule, and order is auditable, configurable, and protected by strong risk controls. I can build this as a backend first portfolio automation platform using NestJS, PostgreSQL, Docker, scheduled jobs, and a broker adapter layer so the strategy logic stays separate from the brokerage integration. I would create the allocation engine for the 70 percent investment and 30 percent cash reserve rule, plus configurable SpaceX proxy exposure and future strategy changes. Then I would build position monitoring, stop loss rules, daily loss limits, duplicate order prevention, market open checks, retry handling, and full audit logs. The ranking engine would support momentum, RSI, volume, volatility, recent performance, and analyst data where available. Since Cash App does not offer a public trading API, I would recommend using an API supported broker such as Alpaca or Interactive Brokers for real execution, while keeping the adapter flexible for future brokers. I can provide timeline, fixed quote, documentation, Docker setup, and post launch support. Warm regards, Yulius Mayoru
$100 USD in 2 days
6.2
6.2

⭐⭐⭐⭐⭐ Build an Automated Portfolio Management Platform for You ❇️ Hi My Friend, I hope you are doing well. I reviewed your project needs and see you are looking for an experienced backend developer for your automated portfolio management platform. Look no further; Zohaib is here to help you! My team has successfully completed over 50 similar projects in backend development. I will create a robust system that manages portfolio allocations, monitors positions, and executes trades efficiently. ➡️ Why Me? I can easily build your automated portfolio management system as I have 5 years of experience in backend development, focusing on automation, database design, API integration, and system architecture. Not only this, but I also have a strong grip on Node.js, PostgreSQL, and Docker, ensuring a solid and scalable solution for your project. ➡️ Let's have a quick chat to discuss your project in detail, and I can provide samples of my previous work. I look forward to chatting with you! ➡️ Skills & Experience: ✅ Node.js ✅ PostgreSQL ✅ API Integration ✅ Docker ✅ Automation ✅ Algorithmic Trading ✅ Audit Logging ✅ Risk Management ✅ Trade Execution ✅ System Architecture ✅ CI/CD with GitHub Actions ✅ Monitoring Tools (Grafana, Prometheus) Waiting for your response! Best Regards, Zohaib
$150 USD in 2 days
5.8
5.8

Hi, I have experience building secure backend systems with **Node.js/NestJS, PostgreSQL, Docker, Redis, and REST APIs**, and I can develop a scalable automated portfolio management platform following your required architecture. I recommend **NestJS + PostgreSQL + Redis + Docker + GitHub Actions**, using a **broker abstraction layer** so the trading engine remains independent of the brokerage. Since **Cash App doesn't provide an official trading API**, I recommend integrating with a broker that offers a supported API (such as Alpaca or Interactive Brokers) while keeping the adapter layer flexible for future integrations. The platform will include portfolio allocation, stock ranking, automated trade execution, risk controls, audit logging, scheduled jobs, CI/CD, and complete deployment documentation. I'm available for long-term collaboration and post-launch support. **Muhammad Rizwan LA**
$100 USD in 2 days
5.7
5.7

Hello There! I’m Md Toriqul Islam, and I have experience building scalable fintech backends with Node.js, NestJS, PostgreSQL, Docker, and brokerage API integrations. I can develop a modular portfolio management platform featuring automated allocation, stock ranking, risk controls, trade execution, audit logging, and scheduled rebalancing. Since Cash App lacks a public API, I recommend brokers such as Alpaca or Interactive Brokers for reliable execution. I’m available for long-term collaboration, post-launch support, and can discuss architecture, timeline, and milestones in detail. Best regards, Md Toriqul Islam
$70 USD in 3 days
5.4
5.4

Hello, I can build your automated portfolio management backend with a modular, broker-agnostic architecture using Node.js (NestJS), PostgreSQL, and Docker, designed specifically for strategy-driven trading automation and safe execution workflows. My approach: The system will separate strategy logic, portfolio engine, and broker execution layer, so trading rules remain independent of any brokerage. A scheduler (cron/queue-based worker) will run daily at 09:30 AM ET to fetch balances, evaluate positions, rank assets, execute trades, and generate full audit logs. Relevant experience: I have worked on backend automation systems, API integrations, and data-driven decision engines with structured logging and scheduled execution workflows. I’m open to a long-term partnership and can start immediately after aligning on brokerage selection and execution rules. Best regards. RAHEEL
$90 USD in 7 days
5.3
5.3

With 13+ years of experience in backend and full-stack development using prominent technologies like Node.js and PostgreSQL, I am more than equipped to take on your project. My vast expertise in API integration also enables me to comfortably navigate the challenge of building a backend system that securely interacts with diverse brokerage APIs or alternative- depending on cash App's non-provision of such an interface. Recently, I have even delved into automated trading systems, making several successful algorithmic trading bots. In this aspect, I can apply my Python skills for you. My proficiency in Python web automation extends to tasks like fetching balances, position monitoring, ranking stocks among other things detailed in your description. Whether it's developing the portfolio allocation engine, stock ranking engine or scheduled tasks like fetching balances/positions, rebalancing portfolios, I've got you covered. Finally, my commitment to delivering quality products within stipulated timelines is unwavering. I will apply a solution-focused mindset to this project, leveraging not just my technical capabilities but also top-notch infrastructure tools like Docker and CloudWatch to ensure efficiency and reliability. Let's collaborate and build the personalized automated investment platform you require!
$30 USD in 1 day
5.6
5.6

I have read your job post and I am a Backend Developer with experience in Node.js, NestJS, PostgreSQL, Docker, REST APIs, and financial automation systems. I have developed secure backend applications with scheduled jobs, API integrations, audit logging, role-based architecture, and scalable microservices. For your project, I recommend NestJS, PostgreSQL, Redis, Docker, and GitHub Actions with a broker abstraction layer to support future broker changes. Since Cash App does not provide an official trading API, I recommend using a supported broker such as Alpaca or Interactive Brokers for reliable automated trade execution. I will build the portfolio allocation engine, stock ranking engine, risk controls, scheduler, audit logs, and deployment documentation with clean, maintainable code. Will the first phase use paper trading for strategy validation before enabling live trading with the selected broker?
$140 USD in 7 days
4.9
4.9

Hello. I understand you want an automated portfolio backend for a personal account that fetches balances and positions, holds 70% invested and 30% cash with a configurable 5% SpaceX proxy, ranks stocks on multiple signals, executes trades, rebalances daily at 09:30 ET, and keeps full audit logs, behind a broker abstraction layer. What stands out is the brokerage gap, since Cash App has no public trading API, so the cleanest path is your BrokerAdapter interface with a first adapter against a broker with an official API like Alpaca. Base on my experience, the strength of that abstraction is that allocation, ranking, and risk logic stay independent of any brokerage, so migrating execution later means writing one adapter, not rewriting the engine. Where these slip is when risk controls are an afterthought, since duplicate orders, market-open checks, position caps, loss limits, and retries protect real money, so I would build those with the scheduler, all audit logged. In terms of my experience, I recently delivered a NestJS and PostgreSQL trading backend with a broker adapter on an official API, a configurable allocation engine, a multi-signal ranking service, scheduled daily rebalancing with stop-loss exits, and audit logging, with Docker and CI. A couple of questions. Are you open to migrating execution to a broker with an official API like Alpaca, or must it stay on Cash App. And for the SpaceX 5%, do you have a proxy in mind, since it is private. Thank you.
$100 USD in 7 days
4.9
4.9

As an experienced backend developer proficient in Node.js, I have a deep understanding of the skills and technologies necessary for this project. My portfolio includes diverse projects from full-stack web development to sophisticated web scraping tools that heavily relied on the automation and robustness of backend systems - precisely what you need for this automated investment platform. I can leverage these skills to create a reliable and smoothly functioning portfolio allocation engine, position monitoring system, and the all-instrumental stock ranking engine. Moreover, my extensive experience with algorithmic trading systems will add immense value to your project. I have hands-on expertise in integrating brokerage APIs which is critical for your platform's success. Since Cash App doesn't provide a public trading API, I'm adept at finding creative workarounds and could suggest efficient alternatives to ensure seamless performance while making sure the trading logic remains independent of the brokerage implementation. Overall, my expertise in backend development combined with my ability to find innovative solutions to challenging problems makes me an ideal fit for your project. I'm dedicated to delivering high-quality code on schedule, and providing solutions that go above and beyond client expectations. Let's create an incredibly automated portfolio management platform together!
$140 USD in 2 days
4.9
4.9

Greetings, Creating a reliable automated investment portfolio manager is a complex task that requires careful planning and execution. The key challenge here lies in integrating various trading strategies while ensuring consistency and compliance with risk parameters. To tackle this, I would focus on building a robust backend using Node.js and PostgreSQL, ensuring clean and maintainable code. The architecture will employ a broker abstraction layer to allow flexibility in trading logic, and I will implement a portfolio allocation engine that dynamically adjusts based on real-time market conditions. By incorporating a stock ranking engine, we'll utilize multiple market signals to optimize investment decisions. With experience in algorithmic trading systems and API integrations, I can ensure a seamless execution process while maintaining detailed audit logs for transparency. I'd love to discuss how you envision the integration with the brokerage, especially considering the lack of a public trading API from Cash App.
$140 USD in 3 days
4.6
4.6

Hi, I am a full-stack AI developer with 8 years of rich experience in software development, with a background in backend automation and fintech systems. I am familiar with Node.js, NestJS, PostgreSQL, Redis, Docker, GitHub Actions, API Integration, Portfolio Management, Scheduler/Cron Jobs, Audit Logging, and Backend Development. I understand you need a backend service that can manage portfolio allocation, rank stocks using market signals, execute trades through a broker adapter, and maintain detailed audit logs. Since Cash App does not provide a public trading API, I would recommend using an official broker API such as Alpaca or Interactive Brokers, while keeping the trading logic separated through a broker abstraction layer for future flexibility. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$250 USD in 7 days
4.7
4.7

Having spent considerable time in building high-performing and secure web and app solutions, I’m confident that my skills set and experience make me the ideal candidate for your project. To begin with, my proficiency in Backend Development is well-suited to your needs, particularly my strong command over Node.js (inclusive of NestJS)- a technology that I believe aligns perfectly with your framework preferences. My skills also extend to API Integration and DevOps aspects like Docker and CI/CD, thereby ensuring not just clean code but also efficient deployment that facilitate seamless functioning of your investment portfolio management platform. Additionally, I come equipped with relevant experience in algorithmic trading systems along with my ability to assess the interface intricacies while integrating brokerage APIs which could evidently prove quite valuable given the project requirements. Furthermore, I have worked extensively improving system performance, developing automation processes, and comprehensive auditing, which will certainly enhance the overall efficiency, maintainability and reliability of this platform.
$30 USD in 1 day
4.9
4.9

I can develop a secure and scalable backend for your automated portfolio management platform, including portfolio allocation, stock ranking, trade execution, risk controls, audit logging, and broker API integration. The system will be built with a flexible architecture, making it easy to extend investment strategies while ensuring reliable automation and long term maintainability. Regards, Shawana
$100 USD in 8 days
4.8
4.8

Hi, I can build this automated portfolio management backend with broker abstraction, risk controls, scheduled trading, and full audit logs. I recommend NestJS, PostgreSQL, Docker, GitHub Actions, and a broker adapter layer. Since Cash App has no public trading API, I would recommend using an official API broker like Alpaca or Interactive Brokers for execution. The MVP would include allocation rules, stock ranking, position monitoring, daily automation, duplicate-order prevention, loss limits, retries, and trade history. I am ready to start right now. Best, Mina
$140 USD in 7 days
4.9
4.9

Being a Full Stack Developer with over a decade of experience, I have successfully delivered numerous complex projects using the latest technologies and frameworks, such as those outlined in your technical requirements. To that end, I am confident in leveraging my expertise in Node.js (included your preferred NestJS framework), Docker, Redis and PostgreSQL to develop a robust automated portfolio management platform for your personal investment account. Moreover, I specialize in API development and integrations 유 including experience with brokerage APIs. Although Cash App doesn't explicitly provide a public trading API, I am adept at finding creative solutions for integrating such service-based dependencies, and could provide recommendations on alternative brokerages that offer official APIs. In summary, with my extensive experience delivering successful projects like yours, utilizing not only requisite technologies but also establishing scalable & secure solutions, offering long-term support to my clients; I believe you'll find me an ideal fit. Let's partner towards turning your vision into a cutting-edge reality.
$200 USD in 7 days
4.4
4.4

Hello there, As a seasoned developer with abundant experience in algorithmic trading systems, I believe my skills make me an ideal candidate for your Automated Investment Portfolio Manager. Having spent 3 years building BOTs for Solana Blockchain, including crypto trading BOTs, I am well-versed in the programming languages/engineering like JS & Python that will be crucial in successfully handling your project. Curating telegram bot related to Solana's environment and implementing a myriad of bots on the same also showcases my adaptability to different platforms. Best Regards.
$140 USD in 2 days
4.4
4.4

Hi, there. This is a well thought out spec, the broker abstraction layer especially tells me you've designed for the right thing. Keeping trade logic independent of the brokerage is exactly what lets you swap execution later without rewriting the engine. On the Cash App question, I'd recommend migrating execution to a broker with an official API, Alpaca's the obvious fit, proper REST trading, a paper-trading sandbox so we test the whole strategy with zero risk first, and it drops cleanly behind your BrokerAdapter interface. Build against that and Cash App's missing API stops being a blocker. I'd build the allocation engine, ranking signals, scheduler and risk controls config-driven so you tweak strategy without code changes. NestJS, Postgres, Docker suits this well. Hope to work with you on this. Stelian
$140 USD in 7 days
4.3
4.3

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