Bottom left hero backgroundTop right hero background

Best freelance Backend Engineers for Chatbot to hire in 2025

Looking to hire Backend Engineers for your next Chatbot project? Browse the world’s best freelance Backend Engineers for Chatbot on Contra.

Trusted by 50K+ teams from creative agencies to high growth tech companies

Logo for Wix StudioLogo for RiveLogo for WebstudioLogo for GlorifyLogo for JitterLogo for FlutterFlowLogo for PeachWebLogo for CanvaLogo for Lottie FilesLogo for Workshop BuiltLogo for BuildshipLogo for AppsumoLogo for FramerLogo for BarrelLogo for BubbleLogo for LummiLogo for WebflowLogo for GrayscaleLogo for Stride UXLogo for InstantLogo for SplineLogo for KittlLogo for RelumeLogo for HeyGenLogo for Replo
Logo for Wix StudioLogo for RiveLogo for WebstudioLogo for GlorifyLogo for JitterLogo for FlutterFlowLogo for PeachWebLogo for CanvaLogo for Lottie FilesLogo for Workshop BuiltLogo for BuildshipLogo for AppsumoLogo for FramerLogo for BarrelLogo for BubbleLogo for LummiLogo for WebflowLogo for GrayscaleLogo for Stride UXLogo for InstantLogo for SplineLogo for KittlLogo for RelumeLogo for HeyGenLogo for Replo
FAQs

How can I define the project requirements for a backend engineer on Contra?

Start by listing out what your project needs. Be clear about the specific functions the backend should perform. Write down any technical requirements or preferred programming languages. This helps the engineer understand what you want and how they can help.

What criteria should I use to evaluate a backend engineer's portfolio?

Look for projects similar to yours in their past work. Check the complexity and scalability of their projects. Notice if they have experience with the technologies you need. This will show if they’re the right fit for your project needs.

How do I ensure the backend engineer understands my project goals?

Have a detailed conversation about your project's big picture. Share your goals and what you expect as the end result. This ensures the engineer sees your vision clearly and aligns their work with your objectives.

What should I include in a project contract when hiring a backend engineer?

Include a clear outline of the project scope, deadlines, and deliverables. Detail any milestones and how success will be measured. This makes sure both sides know what's expected and when.

How do I establish effective communication with a backend engineer on Contra?

Decide on how often you will communicate, like weekly or bi-weekly. Choose the tools or platforms you'll use for updates and questions. Good communication helps keep the project on track and makes problem-solving easier.

What milestones should I set for a backend engineering project?

Break your project into smaller tasks or phases. Set deadlines for each phase to keep the project moving. This makes tracking progress easier and allows for adjustments along the way if needed.

How can I ensure the quality of work delivered by a backend engineer?

Request regular progress updates and code reviews. Test the backend against requirements and expected results. Having a test plan and criteria will help judge if the job meets your standards.

What should I do if I need changes during the backend development?

Communicate all changes as soon as possible. Update the project scope and timeline if needed. This keeps the project aligned with your needs and avoids misunderstandings.

How do I finalize and close a project with a backend engineer?

Review all deliverables and ensure they meet your requirements. Discuss any final adjustments or additional support needed. Agree on the project's completion and provide feedback to wrap up the process smoothly.

What should I do to prepare for project launch with a backend engineer?

Have a final checklist to ensure all functions are working. Test the backend thoroughly with real users if possible. This readiness helps ensure a smooth launch for your project.

Who is Contra for?

Contra is designed for both freelancers (referred to as "independents") and clients. Freelancers can showcase their work, connect with clients, and manage projects commission-free. Clients can discover and hire top freelance talent for their projects.

What is the vision of Contra?

Contra aims to revolutionize the world of work by providing an all-in-one platform that empowers freelancers and clients to connect and collaborate seamlessly, eliminating traditional barriers and commission fees.

Profile avatar
Sebastian Avelar →
PROParis, France
$10k+
Earned
16x
Hired
5.0
Rating
18
Followers
BUILDSHIP_EXPERT

Expert

Cover image for Improving MyHomies: A Modern Housing Marketplace in Switzerland
Cover image for Migrating and Documenting Templates for Buildship V2 - verified
Cover image for How to 'chat' with your database using Buildship and OpenAi
Cover image for Chat Based Pokemon AI Team Builder
Profile avatar
Nikol Hayes
PROSan Francisco, USA
$10k+
Earned
18x
Hired
5.0
Rating
12
Followers
TOP_INDEPENDENT

Top

Cover image for Abstract AI Chat: Learn Blockchain with Interactive AI & Docs
Cover image for AuroraVoice AI Phone Agent Site w/ Framer
Cover image for Morpheus AI Persona Chatbot
Cover image for Bann'd Labs AI Chatbot
Artificial Intelligence(7)
Profile avatar
Sheng Yu
PROBeijing, China
$10k+
Earned
14x
Hired
5.0
Rating
9
Followers
FRAMER_EXPERT

Expert

Cover image for install js script for bplu.io
Cover image for jimmynyeango
Cover image for Aged Care Melbourne | Benetas
Cover image for S&A Stairs
Profile avatar
Leon Li
PROKaty, USA
$100k+
Earned
30x
Hired
5.0
Rating
18
Followers
TOP_INDEPENDENT

Top

Cover image for Monarch Money | Frontend & CMS
Cover image for Telnyx | Frontend
Cover image for Connecteam | Mobile & Backend
Cover image for Inflight Figma Plugin | Full Stack & Plugin Development
Profile avatar
Waison Lee
Montreal, Canada
$10k+
Earned
12x
Hired
5.0
Rating
26
Followers
Cover image for Free Online Form Builder | Tally
Cover image for Online Interior Design and Home Decorating | Havenly
Cover image for Your Business-in-a-Box - BundlyAI
Cover image for Short Term Furnished Rental Apartments In Boston | STARS Of Bos…

People also hire

Explore Chatbot projects by Backend Engineers on Contra

Cover image for Spark Strategies
0
14
Cover image for Frontend development - Olivertech
1
29
Cover image for Website development-Invigorateplatform
1
42
Cover image for FlixSage Movie Recommendations - Replit
1
37
Cover image for GavelGab Law Chatbot
0
129
Cover image for GreenOurPlanet Chatbot
0
62
Cover image for Design Full-Time
14
282
Cover image for Hex Toys ChatGPT CSR Bot
0
38
Cover image for bothello.io - CX Agency
3
592
Cover image for urlz
2
77
Cover image for Vrite - Open-Source Developer Content Platform
2
59
Cover image for Promptopia - Next.js CRUD ChatGPT Prompts App with React, TS
0
35
Cover image for Bann'd Labs AI Chatbot
0
61
Cover image for AI Assistant with BuildShip (on FlutterFlow Marketplace)
0
30
Cover image for Quickwash Tech (iOS & Android)
0
28
Cover image for Connecteam | Mobile & Backend
4
164
Cover image for MVP for a challenge-based hiring platform
1
58
Cover image for Rancher Management Platform
2
22
Cover image for GamifyRoute – Backend Development
1
5
Cover image for 📝 iQCheckPoint – Simplifying Workforce Solutions
1
2
Cover image for NextJS Stock Market Website | Full Stack Web Development
0
45
Cover image for Your Business-in-a-Box - BundlyAI
8
74
Cover image for Bliq For Passengers - Your Ultimate Passenger Experience
3
35
Cover image for Chad: The Ultimate Crypto Degen Bot
1
38
Cover image for Headless Drupal
0
11
Cover image for Decoupled Drupal
0
1
Cover image for Coniagas | Contentful Headless CMS
0
8
Cover image for Hero Redesign Concepts
1
9
Cover image for ChatPDF: 10 million views and 16k followers
2
28
Cover image for Lorikeet AI Website
0
11
Cover image for Contra | Project Cost Calculator
$7.5K+ earned
16
167
Cover image for Reverse Engineering, Burpsuite & Wireshark (Algo Trading Bot)
3
13
Cover image for AI Real-Time Call Monitoring (Slack + Fathom + ChatGPT)
0
2
Cover image for Fairfax – Web App UI Redesign (Figma)  & WeWeb Development
3
95
Cover image for Employee Self Service – Web Portal for Workforce Management
0
16
Cover image for Inspection System Develpment
1
20
Cover image for TMBR | Portal
1
24
Cover image for Jobdirecto, a job portal for Hispanic immigrants in New York
0
0
Cover image for Whale, a social geolocation app.
0
2
Cover image for Dashboard for Restaurant Delivery System | Bento Station
1
12
Cover image for AI Chatbot app
1
13
Cover image for Full-stack Micro Web Apps 🖥️🔗⚙️
1
8
Cover image for Jelly Invoice
0
15
Cover image for Next.js Development With Serverless Architecture
3
18
Cover image for The People's Radar
2
14
Cover image for WooCommerce (WordPress) & ShipStation Sync/ Integration
$500 earned
3
44
Cover image for Homepage | McBride Sisters Collection
0
13
Cover image for Case Study: Across Borders Legal
0
9

Top services from Backend Engineers on Contra

Top locations for Backend Engineers for Chatbot

Backend Engineers for Chatbot near you

Cover image for Voice agent that can access information dynamically
0
1
Cover image for End-to-End Trading CRM/WebApp Solution & Business Growth
8
19
Cover image for Tensorstax (AI Landing Page)
14
236
Cover image for Improvability AI
$1.3K+ earned
0
7
Cover image for Worked with Enterprise Data Pipeline
0
4
Cover image for Computer Vision Basics: No Math, No Code
0
12
Cover image for DocAI | Healthcare On-Demand
0
0
Cover image for Aikitech AI - UI Design Elements - Icons, Cards, Backgrounds
2
1
Cover image for ReferralKit
0
20
Cover image for Airbnb Assistant | WhatsApp Conversational Agent
0
16
Cover image for My AI Prompt Engineering Journey #2 - Chat GPT & Tellie Websites
0
15
Cover image for Building AI-powered financial insights
0
1

Join 50k+ companies and 1M+ independents

Contra Logo

© 2025 Contra.Work Inc