Senior Full Stack / Frontend Engineer

Sumeru INC

Jersey City, NJ, United States

2 months ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Experience required

2 years minimum

Compensation

$145,600.0 - $160,160.0

Working hours

Regular working hours

Job source

www.careerjet.com

Tech stack

Java (Programming Language) JavaScript (Programming Language) .NET Framework Application Programming Interfaces (APIs) Artificial Intelligence Component-Based Software Engineering HTML5 User Authentication Microsoft Azure Cascading Style Sheets (CSS) Continuous Integration Python (Programming Language)

+16 more

Node.Js Cloud Services Data Streaming TypeScript Web Content Accessibility Guidelines WebSocket WebRTC Chatbots ReactJS Backend AI Platforms AngularJS Enterprise Integration Front End Software Development Virtual Agents Restful APIs

Job description

As a Senior Full Stack Engineer, you will play a pivotal role in shaping the future of AI systems by leveraging your technical expertise to develop and maintain robust web applicat…

14 days ago, In this role, you will leverage your expertise to help train next-generation AI systems, shaping how models learn, reason, and perform through high-quality, real-world input. Your …
1 month ago +

Requirements

Role Summary Senior full stack/frontend engineer to build the user experience and integration layer for an enterprise AI assistant platform. The role requires strong React or Angular experience, conversational UI exposure, backend integration capability, and BFSI or regulated enterprise delivery experience. Key Responsibilities Build production-grade conversational UI for chat, voice, avatar, document references, product cards, and guided workflows. Implement browser-based microphone capture, audio playback, response streaming, and real-time interaction states. Create reusable UI components for messages, citations, workflow actions, feedback, errors, loading states, and handoffs. Integrate with backend AI APIs, STT/TTS services, RAG services, authentication, and enterprise systems. Support avatar states such as listening, thinking, speaking, idle, and fallback. Build secure, responsive, accessible UI aligned to enterprise UX standards. Collaborate with backend, data/RAG, client architects, and SMEs through demos, UAT, and releases. Required Skills Strong hands-on React or Angular experience. Strong JavaScript/TypeScript, HTML5, CSS3, and component-based frontend development. Backend/API integration experience using Node.js, Python, Java, or .NET. Minimum 2 years hands-on AI-enabled product or platform implementation exposure. Experience building chatbot, copilot, virtual assistant, conversational UI, or workflow-driven enterprise UI. Experience with REST APIs, WebSockets, streaming APIs, authentication, sessions, and rolebased UI behavior. Experience with browser audio APIs, MediaRecorder, Web Audio, WebRTC, or equivalent. BFSI, banking, insurance, capital markets, payments, or regulated enterprise experience. Client implementation experience. Preferred Skills Avatar-based interfaces, digital humans, lip-sync, or animated assistant experiences. Exposure to OpenAI, Azure OpenAI, Azure AI Speech, Claude, or enterprise AI platforms. Experience with design systems, WCAG, frontend telemetry, monorepos, CI/CD, and cloud deployments.

Benefits & conditions

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