Technology consulting · Brazil and remote
J1618 creates custom solutions for small businesses that don't fit off-the-shelf software — and also designs and sustains large-scale platforms: high data volumes, complex integrations, telephony, mobile, cloud and, today, AI applied to the business — agents, LLMs, automation and custom-trained models. More than 15 years of software experience.
years of software development experience
years of technical leadership and software architecture
years of AWS cloud architecture
product platforms in production with our team's technical involvement
Services
From the small business that needs its first system to the large company that needs architecture and specialists: we work from design all the way to code in production — on our own or alongside your team.
Designing systems from scratch or reviewing existing architectures: domain modelling, service boundaries, API contracts, database choices, queues and scaling strategy.
Putting AI inside your product in a useful and controlled way: LLM agents, RAG over your own data, MCP servers, process automation and voice with real-time transcription and synthesis.
The official WhatsApp Business API set up and maintained by us: infrastructure, a shared inbox for your team and AI agents that answer and qualify customers, connected to your CRM and ERP.
Software built around how your operation actually works, not the other way around — from the small business leaving spreadsheets and rigid tools behind to the large company with complex requirements. Web platforms, mobile apps, back-offices, system integrations and internal automation.
Legacy system that is slow, expensive or hard to evolve? We run a technical assessment, prioritise what pays off quickly and lead the modernisation without stopping your operation.
Lean, predictable infrastructure on AWS: containers, CI/CD, observability, backups, VPN and cloud cost reduction.
From collection to model: data pipelines, analytics dashboards, automatic classification of open-ended text and machine learning models trained for your domain.
How we work
Whether your business is small or large, you understand every stage, what you get and what it costs before anything starts.
A 30 to 60 minute conversation to understand the business problem, the current technical setup and what has already been tried. Free of charge.
You get a document with the solution design, scope, risks, timeline and investment. In plain language, reviewable by people outside of tech.
We work in short cycles with demonstrable deliverables. You follow the progress and can adjust priorities at every cycle.
Going live is part of the job: deployment, monitoring, documentation and knowledge transfer to your team.
Projects
Real systems, with real users, running every single day — built in projects for other companies, and the experience we bring to your business.
Market research · SaaS
Full platform for questionnaire design, field collection through mobile and web apps, quota control, asynchronous processing of large volumes and analytical export. Django + PostgreSQL + AWS S3 architecture with background workers.
Voice AI · Telephony
Voice application on top of Asterisk (ARI + ExternalMedia/RTP) with a real-time pipeline of transcription, LLM natural language understanding and speech synthesis — running phone interviews with no human operator. Includes a predictive dialler and a supervision dashboard.
AI agents · Automation
A custom MCP server authenticated against the product's own database, exposing safe tools scoped to each user, plus agents that monitor quotas, trigger alerts and run operational routines. Integrated with WhatsApp and n8n automations.
Logistics · Traceability
A suite of modules for order management, picking, tracking and sanitisation reporting, with a desktop app for shop-floor operation, barcode scanning and report generation. Node.js/LoopBack service architecture on MongoDB, with versioned shared packages.
Telecom · Quality
Automated test tooling for CPEs (customer premises equipment) with bench execution, test scripts, batch and sample control, multi-level approval/rejection and quality dashboards — connected over VPN to remote labs.
Machine Learning · NLP
A BERT fine-tuning pipeline in PyTorch for multiclass classification of open-ended answers, preserving the context across questions from the same respondent — replacing manual coding with automatic classification.
Tech stack
We pick tools by the problem, not by the hype. These are the ones we run in production.
About J1618
J1618 is a technology company from Minas Gerais, Brazil, specialised in custom software architecture and development and artificial intelligence integration. Our focus is small businesses that need solutions made to fit the way they work, but we also serve large companies. Our technical team brings more than 15 years of experience designing, building and maintaining platforms in production, in projects for other companies — from high-volume market research data to telephony with voice AI, logistics and industrial test automation.
We design with functional programming concepts in mind — predictable, testable code that is easy to evolve. And ever since LLMs became a production tool, we have been integrating AI into real platforms: agents, voice, automation and models trained for specific domains.
Frequently asked questions
It starts with an assessment of the current system or of the business problem. From there we deliver the solution design (components, data, integrations, infrastructure and risks) and we can lead the implementation, support your team, or both. The format adapts to the size of the project.
It means putting AI where it removes a real cost or bottleneck: an agent that answers and qualifies customers, intelligent search over your documents and databases (RAG), automatic text classification, voice support, or automation that replaces repetitive manual work. We assess where the return is real and implement it with cost and quality under control.
Yes. We set up the account and number on Meta's WhatsApp Business Platform, build and maintain the infrastructure, get your team answering together through a shared inbox and add AI agents that reply to and qualify customers, connected to your systems. Details are on the WhatsApp API integration page.
Yes. Our focus is small businesses that need customised solutions, with projects that fit the budget and grow with the company. We also serve mid-sized and large companies that need architecture, modernisation or senior specialists next to the team.
We serve clients across Brazil remotely, and on site in Belo Horizonte and the metropolitan region of Minas Gerais, whenever the project calls for it.
It depends on the format: a fixed-scope project, a monthly retainer of hours for ongoing consulting, or a one-off assessment delivered as a technical report. The proposal states exactly what is included before you decide.
Yes, that is a common scenario. We start with a technical audit of what exists (code, database, infrastructure and cost) and present the path: keep and evolve, refactor in parts, or rebuild. The recommendation comes with reasoning and numbers, not opinion.
Contact
Tell us in a few lines what you need. Our technical team answers.
