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Full Stack Developer

Job in Chicago, Cook County, Illinois, 60290, USA
Listing for: Portfolio123
Full Time position
Listed on 2026-02-06
Job specializations:
  • Software Development
    AI Engineer, Machine Learning/ ML Engineer
Job Description & How to Apply Below

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We are an established fintech company used by Hedge Funds, MBA programs, and individual investors. This year is shaping out to be our most exciting year. Join us and you will be exposed to a variety of challenges, interesting projects, and rewards. We are still very small and you will become an integral part of the team with all the perks associated with that.

You will be hands-on with financial data, and the latest AI technology. We have several projects ranging from UX in Svelte, adding LLMs to our stack, and quantitative finance projects for hedge fund clients.

Requirements:

➤ You are a great computer scientist first and foremost. You are resourceful and can write great code and algorithms without using an LLM, but can also smartly use them to be more efficient. You can either
1) start from a blank sheet and specs, or
2) carefully make changes to a large existing stack.

➤ At least 5 years of intense coding and Bachelors or equivalent in Computer Science (we may make exceptions if you worked on personal projects and contributed to OSS).

➤ A strong affinity to finance, or desire to learn, is required. We genuinely want to help people invest better, so a passion and curiosity in the field is paramount.

➤ Experience in one or more of these: AI technologies, LLMs, ML algos, CMP .

  • Strong knowledge of several of the following:
    Java (Spring Boot), Svelte, Typescript, Angular

    JS, C++, Python, Apache/Tomcat application servers, object oriented, software architecture, open-source technologies, and software development methodology.
  • Familiarity with Proxmox VE, KVM and Hyper-V.
  • Strong experience with writing SQL queries (we use Microsoft SQL, Postgre

    SQL)
  • Familiarity with Ubuntu, Debian, Windows and Windows Core.
  • Familiarity with webstack build processes
  • Dev tools like Visual Studio and Intelli

    J Idea
  • Excellent debugging, problem solving, and testing skills.
  • Affinity to fintech and mathematics.
  • Desire to always learn, and passion for IT.
  • Flexible and remote collaboration, with the possibility of professional and personal growth within our company
  • Stock options after one year of employment.
  • Excellent opportunity to develop skill sets in high demand

If you are a Senior Full Stack Developer passionate about technology and eager to put your skills at the service of a fintech company, send us your CV and a short cover letter. We can't wait to meet you!

About Portfolio
123

Portfolio
123 allows portfolio managers and quantitative investors to develop machine learning quantitative portfolio strategies. Portfolio
123 is unmatched in the mix of sophistication and ease of use, greatly reducing R&D costs.

Seniority level
  • Seniority level

    Mid-Senior level
Employment type
  • Employment type

    Full-time
Job function
  • Job function

    Engineering and Information Technology

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123 by 2x

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