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User Interface Developer Intern Jobs in New York

OnCorps LLC

UI Engineer

New York, NY · On-site

$113K - $152K/yr

UI Engineer Boston/NYC OnCorps AI is the leading enterprise Agentic AI solution for middle and back-office automation. The company delivers production-ready AI agents that automate reconciliation ...

Princeton IT Services

UI Engineer

New York, NY · On-site

$113K - $152K/yr

Job Title: UI Engineer Location: New York, NY Employment Type: Contract Job Summary We are seeking a talented UI Engineer to design and develop modern, responsive web applications for enterprise ...

OnCorps LLC

UI Engineer

New York, NY · On-site

$113K - $152K/yr

UI Engineer Boston/NYC OnCorps AI is the leading enterprise Agentic AI solution for middle and back-office automation. The company delivers production-ready AI agents that automate reconciliation ...

Virtusa

SR UI Developer

New York, NY

$65.75 - $85/hr

React, TypeScript, HTML5, modern CSS/Tailwind CSS, Meta-frameworks (Next.js/Remix), responsive web design, and WCAG accessibility standards Key Responsibilities UI Component Development Build ...

Pyramid IT

Java UI Developer

New York, NY · On-site

... Engineering Services, Enterprise Mobility, Test Automation, QA - Manual and Automated Testing, QA ... than that) for strong JavaScript (UI frameworks such as Dojo/ExtJS) and Java based skills ...

ITech Recruiting

UI developer

Manhattan, NY

$54.75 - $71.25/hr

Regarding the below req, we are looking for someone with very very strong XSL skills and ASP is a nice to have. This is an immediate need. Duration is 3-6 months plus. Location is New York. Minimum ...

Jobsbridge

Java with UI Developer

New York, NY

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers/architects, we have them all. Expertise in HTML(5), CSS(3) Expert level in JavaScript Experience with ...

Career Guidant

Java UI Developer

Weehawken, NJ

... Java , UI, Spring, hibernate. At least 6 years of experience working with CSS, HTML, Javascript and web technologies Experience with development and re-engineering of existing application to ...

Integration Appliance, Inc.

UI Engineer

New York, NY · On-site

$113K - $152K/yr

Experience with CI/CD pipelines (Azure DevOps, GitHub Actions, or similar) * Strong opinions about UI architecture - and the communication skills to build consensus around them * You are a team ...

Capgemini

Java_UI Developer

New York, NY · On-site

$100K - $130K/yr

Deep understanding of UI design. * Experience in stateoftheart tools and methods to enable efficiency performance and agility through automating DevOps processes continuous integration and delivery ...

United Airlines

Java_UI Developer

Manhattan, NY

$100K - $130K/yr

Deep understanding of UI design. * Experience in stateoftheart tools and methods to enable efficiency performance and agility through automating DevOps processes continuous integration and delivery ...

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Infographic showing various User Interface Developer Intern job openings in New York as of August 2026, with employment types broken down into 22% Internship, 61% Full Time, 6% Part Time, and 11% Contract. Highlights an 89% In-person, and 11% Hybrid job distribution.

UI Engineer

OnCorps LLC

New York, NY • On-site

$113K - $152K/yr

Full-time

Posted 14 days ago

Job description

UI Engineer
Boston/NYC

OnCorps AI is the leading enterprise Agentic AI solution for middle and back-office automation. The company delivers production-ready AI agents that automate reconciliation, exception resolution, and oversight workflows for the world's largest asset managers, fund administrators and managed service providers. OnCorps' agentic AI architecture enables fully autonomous processing of complex middle and back-office workflows while maintaining the transparency, control, and auditability required by global financial institutions. Clients rely on OnCorps to deliver measurable operational efficiency and accuracy improvements across mission critical processes.

We are seeking a seasoned UI Engineer to bridge the gap between design and engineering. In this role, you will be instrumental in establishing the frontend architecture that powers our applications. You will work closely with the OnCorps design team, bringing their vision to life while providing the technical expertise necessary to scale our design system. Our environment values adaptability and rapid iteration, requiring a focus on creating highly modular, interchangeable UI components.


Key Responsibilities

  • Architect, develop, and maintain highly responsive, accessible, and scalable user interfaces using modern web technologies.
  • Partner directly with the OnCorps design team to evolve and govern our design system establishing best practices for component architecture and interaction design.
  • Collaborate with backend engineers to integrate frontend applications with robust middleware and backend APIs, ensuring smooth data handling, state management, and application performance.
  • Operate with a framework-agnostic mindset, applying deep expertise in core web fundamentals to build applications primarily utilizing React or Angular.
  • Help drive frontend innovation by exploring and adopting cutting-edge interaction models as we define our future agent framework.

What We're Looking For

  • 5+ years of professional experience in frontend development, UI engineering, or a related field.
  • Strong proficiency in JavaScript/TypeScript, HTML5, and modern CSS/styling methodologies.
  • Deep understanding of modern, component-driven frontend frameworks such as React or Angular, with the flexibility to adapt to the best tool for the job.
  • Proven track record of building, documenting, and maintaining robust design systems using Storybook.js or similar tools.
  • Solid experience working with middleware, RESTful/GraphQL APIs, and state management.
  • A product-focused mindset with a strong appreciation for UX/UI design principles.
  • A passion for staying ahead of the curve in frontend technology and how AI is shaping the future of user interfaces.
  • Prior exposure to middle- and/or back-office operations within the financial industry or fund administration is a plus.


Apply today and be a part of the future of financial services technology!


OnCorps LLC is an equal opportunity employer committed to diversity and inclusion. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, pregnancy, age, marital status, veteran status, or disability status. We provide reasonable accommodations for persons with disabilities. Applicants with equal employment opportunity questions should contact OnCorps at hr@oncorps.io or (617) 286-4448. Retaliation against applicants raising EEO issues is prohibited.

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