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Senior Web UI Developer (React), New York

ION Group · Financial Software & Embedded Finance · Financial Data & Market Intelligence · Bachelor's Degree · JavaScript · 10 years ago

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Salary

≈ $129k – $259k per year (Estimated)

Location

In office (New York)

Seniority

Senior · 5+ years exp

Employment

Full-Time

Confirmed on the employer's own hiring board on Nov 15, 2026. First seen by Alion on Oct 14, 2016. ION Group scores C on the Alion truth index.

Overview

Company

Impact

Profile match

ION Group

ION Group is a financial technology and data company headquartered in London that provides trading, analytics, treasury, commodities and core banking software, plus credit information services, to banks, central banks, trading firms, governments and corporations. Built largely through acquisitions, it reports more than 13,000 employees in over 80 offices serving some 4,800 customers, with businesses that include the Italian banking IT provider Cedacri, the capital markets consultancy Lab49 and the news service Debtwire. It hires Java, .NET, Python and React developers and consultants, graduate software, cloud and AI engineers, security and compliance specialists and financial reporters.

iongroup.com · HQ: London, United Kingdom · Financial Data & Market Intelligence · Financial Software & Embedded Finance · 5000+ employees · Est. 1999

Tech stack of ION Group

Backed by Guidepost Growth Equity

Lab49 has an opportunity available for a Web UI Developer to lead work on complex and challenging projects to drive transformative change for our top-tier Financial Services clients. Operating in an Agile environment, the Web UI Developer will have strong experience developing software in various front-end frameworks, with a focus on design and build the next generation of technology.

Responsibilities

You will build applications that push the envelope when it comes to throughput, latency, resiliency, all the while making sure that we deliver on-time and within budget.

Required Skills and Experience

5+ years of commercial-grade web/front-end development experience.
Strong experience in JavaScript, ideally ES6 or ES7, building Single Page Web Applications with modern frameworks, preferably using React.
Solid skills in HTML5 and CSS3.
Knowledge of the Agile Development Methodology.
Strong interpersonal and organizational skills.
Knowledge of, and strong demonstrated interest in, global financial markets and financial products is a strong plus.
Bachelors or Masters in Computer Science, Engineering, Physics, Math, or related work experience.

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