Photon

Builds custom software and AI for big companies

Front End Engineer - Angular

Frontend EngineeringConfirmed live in the last 24 hours

Full-timeUnited StatesIn-person

About the Job

Requirements

At least 8 years of experience with Angular, with Angular version 16 or 17 and later preferred.
Strong mastery of standalone components, Signals, and the provideRouter and provideHttpClient patterns.
Deep understanding of reactive programming with RxJS for complex asynchronous data streams and event orchestration.
Proficiency with Tailwind CSS or SCSS.
Proven experience with NgRx, Akita, or signal-based state management in enterprise-scale applications.
Experience integrating RESTful APIs and real-time streaming protocols.
Experience with unit testing and end-to-end testing using Cypress.

Responsibilities

Build the next generation of AI-driven user interfaces with Angular.
Create a seamless, high-performance frontend that enables users to collaborate with autonomous agents.
Visualize complex agentic workflows, including reasoning steps, tool usage, and long-running autonomous tasks.
Implement real-time interfaces using Server-Sent Events and WebSockets to display token streaming and agent status updates.
Use Angular Signals or NgRx to manage dynamic AI-agent states.
Build dashboards that visualize chain-of-thought reasoning, references, citations, and the logic used by an agent to reach a conclusion.
Develop human-in-the-loop components that allow users to pause, edit, or approve an agent's proposed plan before execution.
Optimize performance when processing large volumes of streaming data and complex visualizations.
Collaborate with backend and AI engineers to define JSON schemas and API contracts for agentic interactions.

Desired Qualifications

Familiarity with OpenAI or Anthropic API structures.
Experience with Canvas- or SVG-based visualizations for agent decision trees or multi-agent handoffs.
Familiarity with Web Workers for heavy client-side processing.
A portfolio showcasing AI-integrated products or highly interactive real-time dashboards.

We are seeking a highly skilled Angular Developer to build the next generation of AI-driven user interfaces. You will be responsible for creating a seamless, high-performance frontend that allows users to collaborate with autonomous agents.

Your work will focus on visualizing complex agentic workflows—such as the agent’s reasoning steps, tool-usage, and long-running autonomous tasks—using modern Angular features like Signals and RxJS to ensure a responsive, "live" experience.

Key Responsibilities

Real-time Streaming Interfaces: Implement robust handling for Server-Sent Events (SSE) and WebSockets to display real-time "token streaming" and agent status updates as they happen.
Complex State Management: Utilize Angular Signals or NgRx to manage the highly dynamic states of an AI agent (e.g., Idle, Planning, Fetching Data, Executing Code, Awaiting Approval).
AI Observability UI: Build intuitive dashboards that visualize "Chain-of-Thought" reasoning, allowing users to see the references, citations, and logic used by the agent to reach a conclusion.
Human-in-the-Loop (HITL) Components: Develop specialized UI components that allow users to pause, edit, or approve an agent's proposed plan before it executes.
Performance Optimization: Ensure the UI remains performant even when handling large volumes of streaming data and complex visualizations.
Collaboration with AI Engineers: Work closely with Backend and AI engineers to define JSON schemas and API contracts that support the unique needs of agentic interaction.

Technical Requirements

Angular Expertise: 8+years of experience with Angular (v16/17+ preferred). Strong mastery of Standalone Components, Signals, and the provideRouter/provideHttpClient patterns.
RxJS Mastery: Deep understanding of reactive programming to handle complex asynchronous data streams and event orchestration.
Modern CSS/Styling: Proficiency in Tailwind CSS or SCSS to build "Generative UI" components that can adapt their layout based on the agent's output.
State Management: Proven experience with NgRx, Akita, or Signal-based state management in enterprise-scale applications.
API Integration: Experience working with RESTful APIs and real-time streaming protocols. Familiarity with OpenAI /Anthropic API structures is a plus.
Testing: Commitment to quality through unit testing and E2E testing (Cypress )

Preferred Qualifications

Experience with Canvas or SVG-based visualizations to show agent decision trees or multi-agent handoffs.
Familiarity with Web Workers for handling heavy client-side processing without blocking the UI thread.
A portfolio showcasing AI-integrated products or highly interactive real-time dashboards.

Compensation, Benefits and Duration

Minimum Compensation: USD 39,000
Maximum Compensation: USD 137,000
Compensation is based on actual experience and qualifications of the candidate. The above is a reasonable and a good faith estimate for the role.
Medical, vision, and dental benefits, 401k retirement plan, variable pay/incentives, paid time off, and paid holidays are available for full time employees.
This position is not available for independent contractors
No applications will be considered if received more than 120 days after the date of this post

About the Company

Photon

Builds custom software and AI for big companies

Photon designs, builds, and runs custom software for large companies, combining an in-house creative agency with its own engineering teams. Its flagship client work includes rebuilding Samsung's US online store as a set of smaller linked services and creating Olive Garden's mobile app, which lets diners join the waitlist from their phones instead of waiting at the door. Clients hire Photon's teams to plan and code their apps, websites, and AI tools and to keep them running afterward, paying for the engineers and designers assigned to each project. Photon is privately held and based in London, with its US arm in Dallas and engineering centers in Chennai and Bengaluru.

Company size: 5,001-10,000
Company stage: Not listed
Total funding: Not listed
Headquarters: London, United Kingdom
Founded: Not listed

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