[ BRACKETS LABS ]
0
Software Engineering Studio

BRACKETS LABS

Engineering intelligence through AI, Cloud
& Full-Stack solutions.

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AI & Machine Learning — Cloud Architecture — Full-Stack Development — Data Engineering — DevOps & IaC — AI & Machine Learning — Cloud Architecture — Full-Stack Development — Data Engineering — DevOps & IaC —
01 About

Transforming businesses
with advanced technology.

BRACKETS LABS is an engineering studio based in Warsaw, Poland, specializing in AI, Machine Learning, Cloud Architecture, and Full-Stack Development. From early-stage startups to enterprise clients, I architect and deliver end-to-end technology solutions that drive measurable business outcomes.

With a background rooted in computer science and a passion for what's next, I've led projects across fintech, healthtech, real estate, SaaS, and more — consistently exceeding expectations with innovative, production-grade systems.

Expert-Vetted
Top 1% on Upwork
0 Client Rating
0 Hours Delivered
0 Job Success
0 Projects Completed
Trusted by teams at
GSK
Google
Adobe
Mozilla
Teammate AI
Scalexa
Canexpol
Klever Technologies
Natura Umana
02 Founder
Maciej Krupowies — Founder & CEO

From the
Founder & CEO.

I'm Maciej — the engineer behind BRACKETS LABS. With deep expertise spanning AI & Machine Learning, Cloud Architecture, and Full-Stack Development, I've spent years building production systems that don't just work — they deliver measurable business outcomes. From RAG-powered AI copilots and GPU-accelerated video processing to microservices health platforms and blockchain integrations, I architect solutions across the full technology stack.

But technical mastery is only half the equation. Before founding BRACKETS LABS, I worked with GSK, Adobe and other brands where I saw firsthand how technology decisions play out at enterprise scale. I've also built and scaled my own startups, gone through Seedcamp in London and TURN8 in Dubai, pitched investors, and learned that great software means nothing if it doesn't solve a real business problem.

That dual perspective — engineer and entrepreneur — is what sets BRACKETS LABS apart. Every engagement starts with understanding your business context, not just your technical requirements. We don't deliver generic solutions. We craft technology precisely suited to where you are and where you're headed.

Maciej Krupowies Founder & CEO, BRACKETS LABS
03 Services

What we do.

01

AI & Machine Learning

NLP, Computer Vision, RAG systems, predictive analytics, recommendation engines, and reinforcement learning. From GPT-4 and Claude integrations to custom model training and deployment.

NLPComputer VisionRAGPredictive AnalyticsLLM Integration
02

Cloud & DevOps

AWS architecture, cloud migrations, serverless systems, CI/CD pipelines, and Infrastructure as Code. Terraform, Docker, ECS, Lambda, and cost optimization strategies.

AWSTerraformDockerCI/CDServerless
03

Full-Stack Development

End-to-end web and mobile applications. Angular, React, FastAPI, Django, Node.js, NestJS. From responsive frontends to scalable microservice backends.

AngularReactFastAPIDjangoNestJSNode.js
04

Data Engineering

Custom data pipelines, ETL processes, data lakes, and warehouses. PostgreSQL, Elasticsearch, DynamoDB, Redis, pgvector for semantic search, and real-time streaming architectures.

PostgreSQLElasticsearchDynamoDBRedispgvector
05

Tech Consulting

Technology roadmaps, digital transformation strategy, AI/ML model lifecycle management, architecture reviews, and cloud cost optimization. Strategic guidance for startups and enterprises.

StrategyArchitectureDigital TransformationCost Optimization
04 Intelligent Automation

Intelligent automation.

Cut the time your team spends on repetitive work by up to 85%. We build AI systems that handle the operational grind — so your people can focus on decisions that actually move the business.

85% less manual work

Document Processing

AI extracts, classifies, and routes business documents. Replaces manual review with automated pipelines that scale without headcount.

3x faster close

Financial Operations

Automated reconciliation, anomaly detection, and report generation. Compress month-end close from weeks to days.

70% handled automatically

Customer Operations

AI triage, response drafting, and intelligent escalation routing. Handle volume without scaling headcount.

3x detection rate

Quality & Compliance

Continuous monitoring, automated flagging, and audit-ready reporting across every transaction.

60% faster cycles

Supply Chain & Procurement

Demand forecasting, vendor matching, and automated purchase order generation. From requisition to delivery, faster.

05 Selected Work

Case studies.

VOICESTTTTSAI
AI / Voice & Wearables

Near-Zero Latency
Voice AI Platform

Solution architecture for an AI-powered wearable platform with voice-first interaction. Designed the real-time STT/TTS pipeline and edge-optimized inference stack to achieve near-zero latency for natural, human-like conversations through wireless earbuds.

STT/TTSWebSocketEdge AILLM OrchestrationiOSAndroid
View case study
AINLPRAGpgvector
AI / Financial Services

AI-Powered Loan
Underwriting Platform

RAG-based AI copilot for commercial real estate underwriting. Automated credit memo generation, financial modeling (DSCR, LTV), vector-based document search, and multi-format processing. Three-phase roadmap from AI Knowledge Base to full onboarding automation.

FastAPIAngularPostgreSQL + pgvectorOpenAIClaude APIWebSocketAWS
View case study
VIDEOGPUSaaS3D
SaaS / Video Processing

Cloud Video
Processing Platform

Full-stack video motion tracking SaaS with GPU-accelerated processing. Credit-based monetization system, Stripe & PayPal integration, Three.js marketing site, and enterprise AWS infrastructure with multi-environment deployments.

Angular 17/20DirectusThree.jsGSAPAWS BatchTerraformDocker
View case study
HEALTHIoTREACTAPI
HealthTech / Wearables

Wearable Health
Data Platform

Microservices platform integrating Garmin wearable data for maternal health monitoring. Real-time data pipeline from NoSQL ingestion to relational analytics, with asynchronous processing via message queues and rich data visualizations.

DjangoReactDynamoDBRDSRabbitMQDockerTerraform
View case study
HRPAYROLLAICELERY
Enterprise / HCM

Enterprise Payroll
& HR Platform

Comprehensive HCM platform with AI-powered payroll comparison, document reconciliation, sentiment analysis, and multi-source data summarization. Integrates with major payroll providers for automated processing and reporting.

FastAPIAngularCeleryPostgreSQLAWS LambdaTerraform
View case study
AICHATRAGDOCS
AI / Corporate Training

AI Coaching
& Learning Platform

Multi-tenant AI coaching platform with curriculum-grounded responses. RAG-based chat with streaming, document management, vector search, admin console, and MCP tool integration for dynamic data retrieval.

FastAPIAngular 17PrimeNGpgvectorOpenAIClaudeWebSocket
View case study
WEB3NFTIPFSIP
Web3 / IP Management

IP Portfolio &
NFT Minting Platform

Intellectual property management platform with blockchain NFT minting on Polygon. Public portfolio profiles, IPFS metadata storage, and ERC-721 token infrastructure for digital asset provenance.

Angular 17StrapiHardhatPolygonIPFS/PinataPostgreSQL
View case study
DOCSOCRAILAMBDA
AI / Document Processing

Intelligent Document
Classification System

Template-based document classification and data extraction using Claude and AWS Bedrock. Distributed Lambda processing for scalability, with document pre-processing pipeline and async job management.

FastAPIAngular/NxClaude 3.7AWS BedrockLambdaDynamoDB
View case study
ISOSOC2NESTWS
Enterprise / Compliance

Quality & Compliance
Management Platform

ISO/SOC2 compliant platform for client interaction tracking and quality management. Real-time WebSocket communication, AI-powered document analysis, synthetic monitoring, and multi-environment deployment.

NestJSAngularPythonAWS LambdaWebSocketTerraform
View case study
VOICEAICALLWS
AI / Voice Technology

AI Voice Agent
& Calling Platform

Voice AI integration platform for automated customer service. Real-time WebSocket communication, voice call routing and management, with STT/TTS capabilities and intelligent agent orchestration.

PythonVapiWebSocketReact NativeAWS
View case study
DBSEARCHMSSQLAPI
Enterprise / Manufacturing

Product Database
& Analytics Platform

Enterprise product database with legacy MSSQL integration, Elasticsearch-powered search, Redis session management, and role-based access control. Multi-database architecture connecting modern and legacy systems seamlessly.

FastAPIAngular 20PostgreSQLMSSQLRedisElasticsearch
View case study
01 / 11
06 Tech Stack

Tools of the trade.

PythonTypeScriptAngularReactFastAPIDjangoNestJSNode.jsPostgreSQLRedis PythonTypeScriptAngularReactFastAPIDjangoNestJSNode.jsPostgreSQLRedis
AWSTerraformDockerOpenAIClaude APIElasticsearchDynamoDBpgvectorRabbitMQCelery AWSTerraformDockerOpenAIClaude APIElasticsearchDynamoDBpgvectorRabbitMQCelery
GSAPThree.jsSCSSTailwindPrimeNGMaterial UIHardhatPolygonStripeGitHub Actions GSAPThree.jsSCSSTailwindPrimeNGMaterial UIHardhatPolygonStripeGitHub Actions
07 Contact

Let's build
something great.

Have a project in mind? Let's discuss how advanced technology
can transform your business challenges into competitive advantages.

Hire on Upwork Send Email
Location Warsaw, Poland
Availability Open to new projects

Overview

Challenge

Solution & Approach

Key Features