CHATBOT DEVELOPMENT SERVICES
We scaled the machine learning platform behind NextRoll's 150 billion daily buyer predictions and built the NLP engine that summarizes 10,000 legal transcripts a day. Onboard senior chatbot developers in 2-4 weeks.
CUSTOM AI CHATBOT DEVELOPMENT SERVICES
No matter what you're building, we can help.
A customer service chatbot is a world away from an LLM assistant wired into your systems and tuned for production. We provide AI chatbot solutions across that whole range.
Custom Chatbot Development Solutions
Off-the-shelf bots cap out the moment your workflows get specific. A chatbot that resolves tickets, qualifies leads, or handles multi-step transactions requires custom logic tied directly to your data and business rules.
We develop AI chatbots from the ground up. Every bot ships with structured dialog management and fallback routing. With custom chatbot development, your users get accurate responses and your ops team gets a system built around how your business actually operates.
Chatbot Integration Services
Your chatbot is only as useful as the systems it can reach. When a bot cannot pull order history from your CRM or push qualified leads into your pipeline, your team ends up having to pick up the slack manually.
Our integration engineers connect chatbots to CRMs, ERPs, payment gateways, and messaging platforms through webhook and API architectures. We wire up real-time data flows so you get a single conversational layer across your existing stack without rebuilding what already works.
Conversational AI Design
Users bail on chatbots that make them pick from menus instead of just answering. Getting conversation flows right means mapping hundreds of intent paths and designing graceful fallbacks before a single line of code ships.
Each dialog flow goes through user journey analysis and edge-case testing before development begins. We prototype, validate, and iterate until fallback rates are down to a minimum. Your bot gets a natural interaction pattern that keeps users engaged and boosts adoption.
Generative AI and LLM-Powered Chatbots
Traditional rule-based chatbots break on questions they weren't programmed to answer. LLM-powered chatbots handle open-ended queries, but without guardrails they can hallucinate or drift off-topic and off-brand.
We build retrieval-augmented generation pipelines that ground LLM responses in your knowledge base. Our engineers configure prompt chains and set up vector search with Pinecone or Weaviate. Output validation rules make sure your chatbot answers from your data and stays on point.
Intelligent Virtual Assistant Development
When customer inquiries span scheduling, billing, account changes, and troubleshooting, a simple FAQ bot won't cut it. Virtual assistants need multi-turn memory and the ability to execute actions across backend systems.
Our natural language processing (NLP) specialists build assistants that maintain conversation state across sessions and trigger workflows in your backend. Your customers get consistent, personalized support regardless of where they start the conversation.
Multilingual Chatbot Development
Expanding a chatbot to new regions is about more than plugging in a translation API. Each language carries its own intent patterns and cultural context that generic machine translation tends to miss. Getting it wrong costs credibility with the very users you are trying to reach.
For teams operating across regions, we build multilingual NLU models trained on locale-specific data and deploy language detection that routes users automatically. This enables smooth customer interactions in multiple languages, which is a must for some niches.
Chatbot Audit and Optimization
Some chatbot projects reach us half-built or underperforming, handed over by a previous vendor or an internal team that moved on. Fallback rates are high, the intent model is a mess, documentation is patchy. What next?
We audit the existing build, then fix what's broken and rework the weak parts without a rebuild from scratch. You get a chatbot that resolves conversations again, and a team that explains and documents every decision behind it.
Chatbot Support and Maintenance
Language models drift as user behavior shifts, and new conversational edge cases surface weekly in production. A chatbot that worked great at launch gradually stops resolving the queries it was built to handle.
Our engineers provide ongoing monitoring and platform updates on a predictable cadence. We also handle security patches and new intent rollouts so your internal team stays focused on product strategy. This keeps your chatbot aligned with your business goals without pulling developers off more important work.
Chatbot case studies
Conversational AI and NLP projects we've delivered.
Your chatbot is the face of your business to everyone who uses it, so there's no room to get it wrong. We've delivered AI-powered call platforms and knowledge tools for insurance and legal clients, in regulated industries where failure isn't an option.
- FINANCIAL SERVICES
We Integrated ChatGPT and Built a Call-Center Platform Handling 10,000 Daily Calls
Our client operates a healthcare insurance comparison platform that matches consumers with medical providers. The company needed to transform its lead generation site into a high-volume call center platform while maintaining HIPAA compliance. We provided engineers over a 2.5-year staff augmentation engagement. The team built an agent-availability API for efficient call routing, migrated ETL pipelines, transitioned infrastructure to Vercel, and integrated ChatGPT with the Sanity CMS for automated content generation.
- Next.js
- Apache Airflow
- Vercel
- Google BigQuery
- Node.js
- Sanity
- LEGAL & PUBLIC SERVICES
Our Teams Built NLP-Powered AI Tool That Summarizes 10,000 Legal Transcripts Daily
We partnered with a client that serves over 40,000 attorneys and 60 Fortune 500 companies, providing case management and transcription services. They needed an AI tool to replace manual summarization of 200-300 page legal transcripts. Our team built a natural language processing engine that took daily throughput from 2,000 transcripts to 10,000, summarizing each in 3-4 seconds. It also hyperlinks source documents and strips identifying information automatically.
- Azure
- C#
- React Native
- Node.js
- .NET
- LEGAL & PUBLIC SERVICES
We Partnered With a Global Law Firm to Build Gen-AI App Using RAG for Legal Documents
We helped a global law firm with 4,300 lawyers across 40 countries streamline legal document analysis. We deployed 19 senior developers over a 3-year engagement. The team implemented Retrieval-Augmented Generation with Chain-of-Thought and Few-Shot learning, delivering a beta within 9 months that reduces manual document review from one week to minutes. The app reduced the extensive back-and-forth between attorneys reviewing depositions and case files.
- Azure
- Python
- Flask
- C#
- Flask
- React
MARKETING & ADVERTISING
NextRoll Partnered With Us to Scale Their ML Platform to 100,000 Ad Auctions per Second
- 7-Year Engagement
- 48 Senior Engineers
- 10/10 NPS
NextRoll's predictive analytics platform powers automated customer engagement across advertising and email channels, generating over 150 billion daily buyer predictions. They needed to scale their machine learning infrastructure to launch 100,000 ad auctions per second. We onboarded Python developers fast, then grew the engagement to 48 nearshore engineers, giving NextRoll the depth to hit that target.
Increased Shopify customers joining NextRoll's platform by 60%
Honed the machine learning tech to launch 100,000 ad auctions per second on autopilot
Augmented 7 internal teams including Data Science, BI, RTB, and Infrastructure
Get expert help for your Chatbot project.
“Their engineers perform at very high standards. We've had a strong relationship for almost 7 years.”
Our top 1% tech talent.
Work with vetted senior software engineers.
With a decade of experience and dozens of complex builds under their belts, our software engineers raise the bar on every project they work on.
Federico S.
Buenos Aires, AR
Engineering Manager
Manuel C.
Buga, CO
Sr. Software Engineer
Lucas G.
Rio de Janeiro, BR
Sr. Full-Stack Engineer
Bruno S.
São Paulo, BR
Sr. Back-End Engineer
Ricardo A.
Buenos Aires, AR
Sr. QA Engineer
André P.
São Paulo, BR
Sr. Front-End Engineer
Gustavo A.
Marília, BR
Sr. DevOps Engineer
Javier V.
Quito, EC
Sr. Software Architect
Yuri B.
Blumenau, BR
Tech Lead
Diego N.
João Pessoa, BR
Sr. Mobile Engineer
Matheus C.
Rio de Janeiro, BR
Sr. Software Engineer
Onboard a chatbot team in weeks, not months.
About BairesDev
Why work with BairesDev? We're trusted by the world's top tech teams.
BairesDev is a US-based company powered by LATAM dev teams. Since 2009, we’ve built software for companies of all sizes—from scrappy startups to Fortune 500 giants. In fact, we’re one of the fastest-growing software development companies in the world. If you’re looking for onshore quality with nearshore benefits, we’re the partner for you.
1,480+
Delivered
4,000+
On Staff
96%
Rate
500+
Clients
How we work
Here's what makes us easy to work with and hard to replace:
From code quality to compliance, we’ve optimized every part of how we work to support high-performing engineering teams. For you, that means clearer communication and smoother delivery. Plus, get peace of mind from having a development partner you can depend on.
Work with our chatbot development experts.
- Vetted Senior TalentWe hire the top 1% of over two million applicants, so you only work with the best.We give you engineers who’ve already proven they can deliver. Our rigorous evaluation process includes technical tests, English assessments, soft skill screening, problem-solving simulations, and more. Out of over 2 million applicants who apply yearly, fewer than 1% get the chance to join our team. This is how we ensure you get highly qualified developers who are experts in their fields.
- Timezone AlignedWe work your team’s hours, which creates faster feedback loops and fewer blockers.Our nearshore software engineers share your workday, answering Slack messages, joining daily stand-ups, and presenting demos in real time. Project management is streamlined, questions are answered quickly, blockers are resolved as they come up, and simple code reviews take minutes, not days.
- Proficient in EnglishOur engineers have strong English skills, so communication and documentation are clear.Our engineers have 8+ years of experience collaborating with US teams. They excel at articulating complex technical concepts to diverse stakeholders, producing meticulous documentation, and driving technical discussions. This eliminates the ambiguity common with global teams.
- Full-stack CapabilitiesWith expertise in 100+ technologies, we have every specialist your project requires.We cover architecture, development, testing, DevOps, and everything in between—reducing hand-offs and creating better architecture decisions for a smoother path from concept to production.
- Scalable TeamsOur bench strength lets you scale engineering teams to meet new demands in weeks.With 4,000+ engineers on staff and thousands more in our pipeline, we can spin up pods or scale multiple teams across your company in days—so you hit aggressive timelines without bottlenecks.
- Standard MSAs & SOWSWe’re easy to onboard because we work the way your legal team expects us to.Because we’re based in the US, we follow the same legal standards your team already trusts—using MSAs, SOWs, and documentation that fit your procurement process.
- NDAs & IP ProtectionWe take data and IP seriously, with full protection baked into every engagement.Every engagement begins with a mutual NDA and clear IP ownership terms. Our secure workflows and confidentiality protocols also protect existing codebases and proprietary data.
- Enterprise-grade SecurityOur devs follow security protocols that meet even the strictest enterprise standards.Our engineers work only within the systems they need, using strict access control, audit-friendly workflows, secure repository storage, and more—bringing enterprise-grade protection to every engagement.
- Managed DeliveryWe actively track our devs’ work to make sure they consistently meet expectations.Delivery managers monitor progress, resolve blockers, and report regularly, so you never have to chase updates or second-guess performance.
Work with our chatbot development experts.
Flexible engagement models
Need chatbot expertise?
Plug us in where you need us most.
We customize every engagement to fit your workflow, priorities, and delivery needs.
- Need a couple of extra software engineers on your team?
Staff Augmentation
Get senior, production-ready developers who integrate directly into your internal team. They work your hours, join your standups, and follow your workflows—just like any full-time engineer.
- Need a few teams to deliver several projects simultaneously?
Dedicated teams
Spin up focused, delivery-ready pods to handle full builds or workstreams. Together we align on priorities. Then our tech PMs lead the team and drive delivery to maintain velocity and consistency.
- Want to offload everything to us, from start to finish?
Software outsourcing
Hand off the full project lifecycle, from planning to deployment. You define the outcomes. We take full ownership of the execution and keep you looped in every step of the way.
Kick off chatbot projects in 2-4 weeks.
We have reps across the US.
Speak with a client engagement specialist near you.
- Discuss solutions and decide team structure.
Tell us more about your needs. We'll discuss the best-fit solutions and team structure based on your success metrics, timeline, budget, and required skill sets.
- Onboard your team and get to work.
With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.
- We track performance on an ongoing basis.
We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.
CHATBOT SOLUTIONS
Build with chatbot engineers who have experience in your industry.
LLM-powered chatbots are new ground for everyone. The industries they land in aren't new to us. Across 130+ sectors, we already understand how your business runs and what a chatbot has to connect to.
AI Experts
Work with AI-augmented developers.
Every developer we provide uses modern AI coding tools to ship faster than ever while producing cleaner, more consistent code.
CHATBOT CAPABILITIES
We cover the chatbot stack (and everything around it).
A chatbot isn't one stack. It's an NLU engine, an LLM, vector search, orchestration, and everything they plug into, each moving at its own pace. Our 4,000+ engineers mean we have an expert for every layer.
NLP & Intent Recognition
Intent models that worked at launch quietly degrade as users find new ways to ask the same questions. We retrain NLU models on production conversation logs, track confidence score drift, and update entity extractors before fallback rates start climbing. Your bot stays accurate as real usage patterns evolve.RasaDialogflowAmazon LexAzure Bot ServiceWit.aiConversational AI Frameworks
Picking the wrong framework means a rewrite when you need to scale or switch channels. We evaluate framework fit against your current channels, team skills, and growth plan, then build on the framework you settle on. Migration cost drops because the architecture was designed for portability from day one.RasaBotpressMicrosoft Bot FrameworkAmazon LexDialogflow CXVoiceflowLLM & Generative AI Integration
Boards ask about AI risk. Finance asks about token costs. Engineering asks about hallucination. We build RAG pipelines with retrieval guardrails, output validation, and cost controls so your LLM-powered chatbot answers from verified data and stays within budget as query volume grows.OpenAI APIAzure OpenAI ServiceAmazon BedrockLangChainLlamaIndexPineconeWeaviateDialog Management & Orchestration
Simple FAQ bots don't need orchestration. The moment your flows span authentication, backend lookups, and conditional branching, you need a state machine that doesn't break when you add a new intent next quarter. We design dialog graphs that stay maintainable as conversation complexity scales.RasaDialogflow CXAWS Step FunctionsLangGraphMicrosoft Bot FrameworkBotpressVoice & Speech Processing
Voice adds latency and error rates that text channels don't have. Real-time ASR in production is harder than vendor demos suggest, especially with accents, background noise, and domain-specific vocabulary. We tune speech models for your actual caller population and build fallback paths for low-confidence transcriptions.Amazon TranscribeGoogle Cloud Speech-to-TextAzure Speech ServicesTwilio VoiceDeepgramAmazon PollyAnalytics & Conversation Intelligence
You can't justify chatbot ROI to finance without data on resolution rates, drop-off points, and containment. We instrument every conversation with event-level tracking, build dashboards your ops team actually uses, and run intent-level analysis to surface where the bot is losing users.Chatbot Testing & QA
Testing conversational AI is different from testing deterministic software. The same intent has hundreds of phrasings, and edge cases are effectively infinite. We build regression test suites against real conversation logs, automate intent coverage checks, and run adversarial testing before every release.Cloud & Infrastructure
A chatbot that handles 100 concurrent sessions isn't the same architecture as one that handles 10,000. Scaling costs compound when token usage, API calls, and compute aren't right-sized. We design auto-scaling infrastructure with cost guardrails so your per-conversation cost stays flat as traffic grows.Integration & API Development
The bot is only useful if it can reach your CRM, ERP, and ticketing system in real time. Every integration point is a potential failure mode that surfaces as a dead-end conversation for the user. We build resilient API layers with retry logic, circuit breakers, and graceful degradation.Security & Compliance
Chatbots collect PII by nature of the conversation. One data leak and you're explaining it to legal, compliance, and the board. We encrypt data in transit and at rest, enforce role-based access, mask sensitive fields in logs, and build audit trails that hold up under regulatory review.AWS KMSAzure Key VaultHashiCorp VaultAWS WAFOWASP ZAPSonar
CHATBOT DEVELOPMENT PROCESS
How we deliver chatbot solutions that drive business value:
Most chatbot builds rush the parts that decide whether it succeeds. The integration, the guardrails, the tuning after launch. Our process gives each of those its own stage. Let us handle the full build, or drop us into the step where your team is stretched.
Requirements & Stakeholder Analysis
We translate business objectives into chatbot specs: target users, conversation scope, integration points, success metrics, and compliance constraints.
Architecture & Platform Evaluation
We evaluate NLP frameworks, LLM providers, and hosting options against your scale, budget, and team capabilities, then select or validate the architecture with you.
Conversational Design & Intent Mapping
We map user intents, define entity schemas, design dialog flows, and prototype conversation paths before writing production code.
Infrastructure & Environment Setup
We configure cloud environments, CI/CD pipelines, staging bots, and version control so the team ships and tests against a production-like setup from day one.
NLP Model Training & Tuning
We train intent classifiers and entity extractors on your domain data, benchmark accuracy against target thresholds, and iterate until confidence scores hold.
Core Bot Development
We build dialog management logic, connect backend services, wire up authentication, and implement fallback and escalation routing.
API & System Integration
We connect the chatbot to your CRM, ERP, ticketing, and messaging platforms with resilient API layers, retry logic, and real-time data validation.
Performance Optimization
We profile response latency, optimize NLP inference time, tune caching, and load-test concurrent sessions to confirm the bot holds under peak traffic.
Security Hardening & Compliance
We enforce encryption, mask PII in logs, configure role-based access, and validate against your compliance framework before the bot touches production data.
Testing & Validation
We run intent coverage tests, conversation regression suites, adversarial input checks, and end-to-end integration tests across all connected systems.
Monitoring & Alerting Setup
We instrument conversation-level KPIs, build dashboards for fallback rates and drop-off points, and configure alerts for confidence score drift.
Deployment & Knowledge Transfer
We deploy AI chatbots to production, document the full architecture, train your team on retraining workflows, and establish a support cadence for ongoing optimization.
Client testimonials
Get dev outcomes you can stand behind.
Our work holds up in reviews, in production, and in front of the board.
Global companies have trusted us to build and scale custom chatbot solutions for years.
Excellence.
Our minimum bar for client delivery.
Over 130 awards, accolades, and achievements showcase our quality and commitment to client success.
- 1,480+projects
delivered - 130+industry
sectors
America's Fastest-Growing Companies 2025 by Financial Times Top 100 U.S. IT Innovators 2025 by CIO100 Awards Nearshore North America Top Software Developers 2025 by Clutch Top 100 Global Outsourcing Providers 2024 by IAOP Global Outsourcing 100
What tech leaders ask about our chatbot development services:
How quickly can you staff a chatbot team?
We typically staff chatbot teams within 2-4 weeks. Our 4,000+ engineer bench includes chatbot specialists with experience across Dialogflow, Rasa, Amazon Lex, and LLM integration. This allows us to assemble the right team quickly based on your technology stack and project requirements.
What level of experience do your chatbot developers bring?
We screen 2.5 million applicants annually and hire the top 1%. Every engineer on our bench has 8-10+ years of production experience. Our chatbot developers have built NLP engines processing thousands of conversations daily and deployed RAG pipelines for Fortune 500 clients. They understand intent modeling, dialog orchestration, and LLM guardrails without needing ramp-up.
Should we build a custom chatbot or use an off-the-shelf platform?
Off-the-shelf tools work when your use case is standard and low-volume. Our custom chatbot development services make sense once the bot has to run your workflows, plug into your systems, or scale past what a SaaS plan allows. We help you make that call, then build the tailored solution if custom is the right fit.
What happens when the chatbot can't answer a question?
It hands off cleanly. When confidence drops below a set threshold, the bot escalates to a human agent with the full conversation context, so customers never hit a dead end or repeat themselves. We design the fallback and escalation paths up front, not as an afterthought once the bot is live.
Can your chatbots handle multiple languages?
Yes. We build multilingual bots that detect a user's language automatically and respond in kind, trained on locale-specific data rather than raw machine translation. We test each language variant against real conversations before launch, so intent accuracy holds across every market you serve.
Do you handle contracts and billing in the US?
Yes. We operate from US headquarters under US law and jurisdiction. All contracts, billing, and procurement flow through domestic channels, eliminating international complications.
Do your engineers use AI tools, and how do they integrate into our environment?
Yes, AI-augmented development is a standard practice. We screen for AI proficiency during hiring and constantly invest in upskilling because LLMs are evolving fast. Your environment dictates the tooling. Our engineers work within your VDI, approved toolchain, or whatever AI suite your team runs on. Whether your team uses Claude Code, Cursor, GitHub Copilot, or something else, tool choice follows your standards.
How do you prevent chatbot hallucination and keep responses accurate?
We build retrieval-augmented generation pipelines that ground every LLM response in your verified knowledge base. Output validation rules check for factual consistency, confidence thresholds trigger fallback to human agents, and we log flagged responses for review. Regular retraining cycles against production data keep accuracy from drifting as your content and user questions evolve.
Can you integrate a chatbot with our existing systems and internal tools?
Yes. We connect chatbots to CRMs, ERPs, ticketing platforms, payment gateways, and messaging channels through production-grade API layers. Each integration includes retry logic, circuit breakers, and graceful degradation so a downstream outage doesn't leave users in a dead-end conversation. We've integrated with Salesforce, Zendesk, ServiceNow, and custom backends.
How do you measure chatbot performance and prove ROI after launch?
We instrument every conversation with event-level tracking from day one. Dashboards surface resolution rates, containment rates, drop-off points, average handle time, and intent confidence scores. Your ops and finance teams get the data they need to measure cost-per-resolution against human-agent benchmarks and justify continued investment.
Useful Chatbot resources
See why the biggest names in tech choose our chatbot development services.
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