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Łukasz Bazan's avatar
Łukasz Bazan
Głogów Małopolski, Poland
Fractional AI Architect | Deterministic GraphRAG Expert
New to Contra
Fractional AI Architect | Deterministic GraphRAG Expert
Cover image for PAY-SENTINEL is a highly deterministic
PAY-SENTINEL is a highly deterministic architectural framework designed to eliminate financial leakage in FinTech refund and payment automation pipelines. This document is a redacted portfolio version of the Master Blueprint, demonstrating how to replace probabilistic "AI Wrappers" with hard, stateful logic. The primary achievement of this architecture is the complete eradication of "Semantic Drift" and False Approval Rates (FAR). By weaponizing Pydantic V2 and GraphRAG, the system incarcerates stochastic AI outputs within rigid JSON schemas, forcing 100% SLA and KYC compliance before any transaction API is triggered. [ARCHITECTURAL IP & LIABILITY NOTICE] This document is a redacted sample of a Master Engineering Blueprint. It is intended exclusively for demonstrating architectural methodology and strategic framework design. It does not constitute a completed engineering source of truth for any third-party production environment. All proprietary frameworks and "Zero-Trust Fail-Safe" methodologies contained herein are the exclusive intellectual property of Łukasz Bazan. As a Fractional Architect, I provide the "Engineering Brain." I do not perform direct application coding. Any attempt to implement these patterns by internal teams is done at the Client’s own risk.
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Cover image for NEXUS-FORGE is a proprietary Tier-0
NEXUS-FORGE is a proprietary Tier-0 architecture designed for global supply chains operating on enterprise-grade ERP systems (SAP/Oracle). This document is a redacted portfolio version of the Master Blueprint, which eliminates the risk of "Stochastic Deadlock" and API Exhaustion by implementing an Asynchronous Sidecar pattern. The primary achievement of this architecture is the transformation of unpredictable AI forecasts into a deterministic "Digital Twin" model powered by a Neo4j Knowledge Graph. This enables the prediction of cascading failures and the calculation of a logistical "Blast Radius" with mathematical precision, completely isolating core operational databases from probabilistic AI models. [ARCHITECTURAL IP & LIABILITY NOTICE] This document is a redacted sample of a Master Engineering Blueprint. It is intended exclusively for demonstrating architectural methodology and strategic framework design. It does not constitute a completed engineering source of truth for any third-party production environment. All proprietary frameworks and "Zero-Trust Fail-Safe" methodologies contained herein are the exclusive intellectual property of Łukasz Bazan. As a Fractional Architect, I provide the "Engineering Brain." I do not perform direct application coding. Any attempt to implement these patterns by internal teams is done at the Client’s own risk.
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Cover image for LEX-SENTINEL is an advanced legal
LEX-SENTINEL is an advanced legal engineering architecture designed for high-stakes Mergers & Acquisitions (M&A). This document is a redacted portfolio version of the Master Blueprint, showcasing how to eliminate the severe legal liabilities (such as "Frankenstein Clauses") generated by probabilistic Naive RAG systems. The primary achievement of this architecture is the deployment of a Spatial Knowledge Graph. Instead of destroying document structure through standard OCR, the system maps exact (X, Y) coordinates of legal PDFs. It guarantees a 100% verifiable, Zero-Paraphrase policy, compressing cross-document liability analysis from weeks to sub-minute, mechanically verifiable audits. [ARCHITECTURAL IP & LIABILITY NOTICE] This document is a redacted sample of a Master Engineering Blueprint. It is intended exclusively for demonstrating architectural methodology and strategic framework design. It does not constitute a completed engineering source of truth for any third-party production environment. All proprietary frameworks and "Zero-Trust Fail-Safe" methodologies contained herein are the exclusive intellectual property of Łukasz Bazan. As a Fractional Architect, I provide the "Engineering Brain." I do not perform direct application coding. Any attempt to implement these patterns by internal teams is done at the Client’s own risk.
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Cover image for CYBER-AEGIS is a proprietary Tier-0
CYBER-AEGIS is a proprietary Tier-0 architecture designed for Enterprise Security Operations Centers (SOC). This document is a redacted portfolio version of the Master Blueprint, showcasing an autonomous SOC Swarm engineered to eliminate Alert Fatigue and probabilistic hallucinations. The primary achievement of this architecture is the mechanical grounding of SIEM logs within a Zero-Trust Knowledge Graph (Neo4j). By utilizing OCSF normalization and a LangGraph Swarm, the system compresses the Mean Time To Detect (MTTD) for complex threats from days to sub-minute resolution, algorithmically rejecting over 90% of false-positive noise before human escalation. [ARCHITECTURAL IP & LIABILITY NOTICE] This document is a redacted sample of a Master Engineering Blueprint. It is intended exclusively for demonstrating architectural methodology and strategic framework design. It does not constitute a completed engineering source of truth for any third-party production environment. All proprietary frameworks and "Zero-Trust Fail-Safe" methodologies contained herein are the exclusive intellectual property of Łukasz Bazan. As a Fractional Architect, I provide the "Engineering Brain." I do not perform direct application coding. Any attempt to implement these patterns by internal teams is done at the Client’s own risk.
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92
Data Engineer(4)
Security Engineer(3)
Systems Engineer(2)
ML Engineer(1)
Ari Harrison's avatar
Ari Harrison
proSan Francisco, USA
AI & ML Engineer
$1k+
Earned
7x
Hired
25
Followers
AI & ML Engineer
Cover image for AI Vested An AI-powered investment platform
AI Vested An AI-powered investment platform with Claude AI integration. Deploy in minutes, no local setup required.
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215
Cover image for Biglabs Consulting-grade template for professional services
Biglabs Consulting-grade template for professional services firms. Manage case studies, articles, services, careers, testimonials, and client consultations with AI-powered analytics. Deploy in minutes, no local setup required. Features Thought Leadership — Publish articles and insights with categories, excerpts, and rich content Service Pages — Present your consulting services with detailed descriptions and feature lists Consultation Booking — Public intake form for prospective clients with scheduling preferences Careers Portal — Post open positions with departments, requirements, benefits, and salary ranges AI Analytics — Claude-powered insights and reporting on your consulting data And more.....
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192
Cover image for AiFee A creator donation and product
AiFee A creator donation and product sales platform. Support creators you love with donations and discover unique digital products. Deploy in minutes, no local setup required.
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104
Cover image for BioBERT Attention Visualization Tool An interactive
BioBERT Attention Visualization Tool An interactive web application for visualizing attention mechanisms in BioBERT on biomedical text. This tool helps researchers and practitioners understand how transformer models process biomedical language by providing intuitive visualizations of attention patterns.
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104
ML Engineer(3)
UX Engineer(2)
Data Engineer(2)
Design Engineer(1)
Pavlo Krasnytsia's avatar
Pavlo Krasnytsia
Lviv, 79000
Tech Leader | AI, Blockchain & Technology Architect
New to Contra
Tech Leader | AI, Blockchain & Technology Architect
Cover image for Built a secure key management
Built a secure key management and programmable policy platform for Web3 infrastructure, enabling teams to enforce transaction rules, automate approval logic, and protect sensitive signing workflows using hardware-backed controls. This project signals senior-level expertise in security architecture, backend systems, and blockchain operations.
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171
Cover image for Created a real-time blockchain data
Created a real-time blockchain data platform that streams on-chain data into developer and analytics workflows with low-latency pipelines, indexing, and database delivery. This project showcases strong full-stack architecture, data engineering, and blockchain infrastructure capabilities for modern financial applications.
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162
Cover image for Developed a real-time on-chain threat
Developed a real-time on-chain threat detection platform that monitors smart contracts, wallets, governance actions, and protocol activity to surface emerging attacks before damage occurs. This project demonstrates strong blockchain security engineering, alerting architecture, and production-grade risk monitoring at scale.
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123
Cover image for Developed AI-powered semantic search systems
Developed AI-powered semantic search systems using Weaviate as the core vector database. Designed hybrid search (keyword + vector) architecture and integrated large language models for contextual retrieval and summarization. Optimized schema design, embedding pipelines, and indexing strategies to support large-scale document corpora and conversational AI systems.
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115
Security Engineer(2)
Systems Engineer(1)
ML Engineer(1)
Data Engineer(1)
Raymond Asogwa's avatar
Raymond Asogwa
proCyprus
Ship your SaaS MVP in weeks - web, mobile, payments.
$10k+
Earned
14x
Hired
4.9
Rating
87
Followers
BOLT_EXPERT

Expert

BOLT_MENTOR_EXPERT

Mentor

+1
Ship your SaaS MVP in weeks - web, mobile, payments.
Cover image for Togethr – Turn Community Voice into Product Momentum
Togethr – Turn Community Voice into Product Momentum
0
127
Cover image for Unexposed – The Document Vault That Can't See Your Documents
Unexposed – The Document Vault That Can't See Your Documents
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21
Cover image for Next.js Website & Contentful Optimization
Next.js Website & Contentful Optimization
1
39
Cover image for Education Platform Website Development
Education Platform Website Development
1
2
33
Design Engineer(5)
Security Engineer(1)
UX Engineer(1)
Usama Idrees's avatar
Usama Idrees
Islamabad, Pakistan
Cloud · DevOps · AI/ML · Email · Marketing Expert
$5k+
Earned
11x
Hired
5.0
Rating
31
Followers
Cloud · DevOps · AI/ML · Email · Marketing Expert
Cover image for IT/AI Infrastructure Support
$501 earned
IT/AI Infrastructure Support
2
28
Cover image for Serverless Architecture for Scalability & Efficiency at VMLA
Serverless Architecture for Scalability & Efficiency at VMLA
0
31
Cover image for Legacy System Scalable and Secure Modernization
Legacy System Scalable and Secure Modernization
2
23
Cover image for Implementing DevOps Practices; Enterprise-Level Transformatios
Implementing DevOps Practices; Enterprise-Level Transformatios
2
61
Systems Engineer(4)
ML Engineer(1)
Data Engineer(1)
Ali Shan's avatar
Ali Shan
proLondon, UK
Full-Stack & AI Dev | TypeScript, Next.js, React, Node
$25k+
Earned
4x
Hired
5.0
Rating
59
Followers
Full-Stack & AI Dev | TypeScript, Next.js, React, Node
Cover image for Containerized Automated Quality Control Pipeline
Containerized Automated Quality Control Pipeline
0
5
Cover image for Landing page for an ai
Landing page for an ai company.
1
5
499
Cover image for Langflow Multi-Agent Research Framework Development
Langflow Multi-Agent Research Framework Development
0
20
Cover image for Full Stack Web App Build
Full Stack Web App Build
0
5
Systems Engineer(2)
Platform Engineer(1)
ML Engineer(1)