We have an AI agent application built with Python, LangChain, and AWS Bedrock that currently takes around 40 seconds per LLM response. We need to reduce latency dramatically for investor demos, ideally under 10 seconds. The backend is Flask (Python 3.10) on AWS Lambda with a React frontend and Bedrock Claude models.
You’ll be responsible for targeted performance fixes focused on measurable speed gains. The work includes optimizing Bedrock configuration, implementing real token-by-token streaming, adding Redis caching to replace S3-based message storage, and validating performance improvements with before-and-after latency metrics.
Estimated 6 hours of work.
Tasks
Optimize Bedrock Model Configuration: update bedrock_config.py to disable thinking mode, remove unnecessary budget_tokens, and lower temperature from 1.0 to around 0.2–0.3 for deterministic, faster responses. Confirm that the configuration change reduces token generation delay and verbosity.
Implement Real Token Streaming (Backend): replace agent.invoke with a streaming method using Bedrock ConverseStream or LangChain’s stream API. Ensure partial tokens are sent to the client in real time and test time-to-first-token performance.
Enable Live Streaming Display (Frontend): update the React frontend to handle streamed events progressively so users see text as it generates. Confirm the UI starts displaying output within 2–3 seconds of sending input.
Add Redis Caching for Chat Session Memory: replace S3-based chat history with Redis for in-memory storage. Update the chat_history_manager logic, validate cache persistence, and confirm message load time is near-instant.
Measure and Document Latency Improvements: record baseline timing (total response and time-to-first-token), re-measure after optimizations, and summarize the before/after results. Confirm at least a 4–5× improvement in perceived speed. All optimizations must preserve the exact response content and formatting from the LLM - only response speed may change.
Deliverables • Updated, tested backend and frontend code (GitHub commit or zip) • Before/after latency test results (text or JSON summary) • One short summary of what was changed and verified
Questions - please answer all in proposal
Describe your experience optimizing latency in LangChain or Bedrock-based applications.
Have you implemented real token streaming (not chunked post-processing) before?
What is your preferred setup for Redis caching in a Python/AWS environment?
Are you comfortable modifying both Python backend and React frontend code?
Can you start immediately and complete project within 48 hours of getting contract offer?
Handwritten Notes Transcribed to Text Category: Content Writing, Data Entry, Editing, English Spelling, Proofreading, Text Recognition, Transcription, Word Processing Budget: $250 - $750 USD
AI Branding Ads & Video Creation Category: After Effects, AI Art Creation, AI Content Creation, AI Graphic Design, Animation, Graphic Design, Social Media Marketing, Video Editing Budget: $30 - $250 USD
Innovation Collaboration MVP Web App Category: Graphic Design, Mobile App Development, Node.js, PHP, UI / User Interface, UX / User Experience, Web Development, Web Design Budget: $10 - $40 USD
14-Dec-2025 16:58 GMT
Website UI/UX Design Category: Adobe XD, Graphic Design, Prototyping, UI / User Interface, User Interface / IA, UX / User Experience, Web Design Budget: ₹1500 - ₹12500 INR
14-Dec-2025 16:58 GMT
Refine Colored Floor Plan & Furnishings Category: 2D Drafting, 2D Drawing, 3D Modelling, 3D Rendering, AutoCAD, Building Design, Interior Design, Revit Budget: $10 - $30 USD
14-Dec-2025 16:58 GMT
Android App UI & Feature Tweaks Category: Android, Android App Development, Android Studio, Java, Kotlin, Mobile App Development, Mobile Development, UI / User Interface Budget: ₹600 - ₹1500 INR
14-Dec-2025 16:58 GMT
Motivation Santé Mentale Quotidienne Category: Article Writing, Content Writing, Copywriting, French Translator, Graphic Design, Psychology, Social Media Management, Translation Budget: $15 - $25 USD
14-Dec-2025 16:57 GMT
Custom Web CMS Development Category: API Development, Content Management System (CMS), HTML, JavaScript, MySQL, PHP, Web Development, Web Design Budget: $15 - $25 USD
14-Dec-2025 16:56 GMT
NX CAD 3D Engineering Drafting Category: 3D CAD, 3D Drafting, 3D Modelling, Mechanical Engineering, NX CAD, Product Design Budget: $10 - $30 USD
Upgrade My Android BLE App Category: Android, Android App Development, Android Studio, API, Bluetooth Low Energy (BLE), Java, Mobile App Development, Mobile Development, Software Testing Budget: $30 - $250 USD
14-Dec-2025 16:53 GMT
CAD Design with Light Curve and Knobs Category: 3D CAD, 3D Design, 3D Modelling, 3D Printing, CAD / CAM, Mechanical Engineering, Product Design, Solidworks Budget: $10 - $30 USD
