Building Resilient Web Applications, Intelligent AI Systems & Scalable Data Pipelines
A dedicated full-stack engineering and systems architecture team with 5+ years of production experience building high-throughput Python backends, real-time Voice AI telephony agents, resilient web scraping engines, and predictive analytics platforms.
Years Experience
Projects Shipped
Git Commits
System Reliability
System architecture healthy (0 issues silenced)
ASGI/WSGI workers active • Latency: ~34ms • Cache: Redis Hit 99.4%
Security: CSRF/XSS strict • DPA 2019 / GDPR compliant
Core Engineering Solutions
Bespoke systems engineering, high-throughput backend infrastructure, and automated conversational AI for ambitious products.
We design and build custom SaaS platforms, customer portals, robust REST APIs, and high-concurrency backends engineered around your core business processes.
- Modular Python backend (Django / FastAPI) with clean service-layer architecture
- Optimized PostgreSQL schema with composite indexing, foreign keys & query profiling
- Asynchronous task queue workers (Celery, Redis) with retry and dead-letter queues
- Interactive OpenAPI / Swagger 3.0 API documentation & Postman test collections
Build intelligent inbound and outbound voice systems that communicate with customers in real time, qualify leads, and perform business tasks automatically.
- Sub-800ms bidirectional full-duplex WebSockets voice pipeline with neural STT & TTS
- SIP telephony trunk integration (Twilio, Telnyx, Retell AI) for inbound & outbound routing
- Tenant-isolated prompt injection sandboxes with live corporate knowledge base grounding
- Autonomous LLM tool-calling engine for live CRM booking, order status lookups & ticket triage
Turn information scattered across complex websites and online portals into clean, structured, and actionable business intelligence.
- Distributed asynchronous crawlers with automated proxy pool rotation and exponential backoff
- Anti-bot evasion layer with dynamic TLS fingerprinting and browser session persistence
- OCR extraction pipeline converting scanned PDFs and images into structured tabular data
- Idempotent database upsert pipelines deduplicating records across composite keys
Turn messy, fragmented multi-source data (spreadsheets, CSVs, PDFs, JSON) into clean, reconciled, and normalized relational datasets ready for analytics and AI.
- Automated data sanitization pipeline isolating invalid characters, malformed types & corrupt values
- Multi-format converters seamlessly transforming between Excel XLSX, CSV, JSON, and SQL
- High-performance vector algorithms calculating margins, financial scores, and aggregations
- Automated fuzzy record deduplication and entity reconciliation engine
Deploy and operate applications on scalable, secure cloud infrastructure (AWS, DigitalOcean, Linux VPS) with automated testing and predictable release cycles.
- Multi-stage production Dockerfiles with minimal footprint and unprivileged user execution
- Docker Compose definitions orchestrating Web, DB, Redis, Celery workers & Nginx
- Automated GitHub Actions CI/CD workflows for linting, testing, building, and rolling deployment
- Nginx reverse proxy configurations with HTTP/2, Let's Encrypt TLS 1.3, and Gzip compression
Identify security weaknesses, slow SQL queries, and architectural bottlenecks before they cause expensive downtime or data exposure incidents.
- Detailed Architectural Health Report documenting critical bottlenecks, security flaws, and fixes
- Database query profiling audit isolating slow queries, missing indexes, and lock contention
- Security vulnerability remediation plan targeting CSRF, XSS, insecure headers & auth weaknesses
- Core Web Vitals & asset audit removing render-blocking libraries for sub-second page loads
Featured Projects & Case Studies
A curated selection of real-world production platforms, client portals, and scalable cloud backends built with rigorous engineering standards.
Wanjiru Nyaguthi & Company Advocates Portal
High-performance legal practice management portal with rich publishing, multi-stage pro bono intake, and automated consultation scheduling.
Multi-Tenant Real-Time Voice AI & Telephony Platform
Ultra-low latency (<800ms) bidirectional conversational voice assistant powered by LiveKit WebRTC, Retell AI, and OpenAI Realtime WebSockets with multi-tenant isolation.
High-Frequency Sports Betting Analytics & Algorithmic Prediction Platform
Data-driven sports analytics platform aggregating live consensus odds, sportsbook betting splits, and statistical match simulation engines.
Automated Financial Risk Scoring & Credit Decision Engine
Automated fintech risk scoring engine and borrower portfolio analytics platform processing multi-source banking statements to calculate structured credit indices.
Institutional Market Intelligence & Financial Valuation Pipeline
Multi-threaded financial terminal crawler harvesting institutional analyst consensus estimates, quarterly/annual income statements, and enterprise valuation multiples.
UK Council Planning Applications Data Ingestion Pipeline
Multi-threaded automated web crawler ingesting thousands of local government council planning applications with resilient proxy rotation.
Technical Skills & Stack Matrix
Developing robust, end-to-end solutions leveraging modern toolchains, clean paradigms, and battle-tested databases.
Data Extraction, OCR & Automation
Data Transformation & ETL Pipelines
Databases, SQL & Warehousing
Multi-Cloud & DevOps Infrastructure
Backend, APIs & Server Architectures
Frontend, UI & Technical SEO
Career Milestones & Experience
Hands-on technical leadership, full-stack development, and architecture consultancy across diverse organizations.
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Lead Full-Stack Architect & Consultant
2023 — PresentIndependent Engineering & Consultancy • Nairobi, Kenya / RemoteDeveloping bespoke enterprise web applications, real-time AI agents, and high-throughput data scraping pipelines for clients globally (Kenya, UK, US).
- Engineered predictive sports intelligence platforms, automated consensus odds aggregators, and multi-league simulation backends (FastAPI, SQLAlchemy, Alembic, PostgreSQL).
- Developed multi-tenant real-time Voice AI telephony agents utilizing LiveKit WebRTC, Retell AI, and OpenAI Realtime WebSockets for autonomous client qualification.
- Engineered complete digital platform for Wanjiru Nyaguthi & Company Advocates featuring dynamic legal publishing, client intake, and appointment booking.
- Delivered high-concurrency ingestion engines parsing federal trademark registries and municipal planning portals with automated retry and queue workers.
- Implemented custom Python asset minification pipeline reducing CSS/JS payload sizes by up to 48% with zero render-blocking dependencies.
Python Django FastAPI SQLAlchemy PostgreSQL LiveKit Docker Retell AI Tailwind CSS React TypeScript Node.js -
Senior Backend & API Engineer
2021 — 2023Fintech & Systems Development • Nairobi, KenyaDesigned and maintained core transactional APIs, microservice integrations, database schemas, and background processing pipelines.
- Built automated loan risk scoring algorithms and portfolio credit analytics engines.
- Engineered resilient asynchronous processing queues handling thousands of daily operations with zero downtime.
- Optimized relational database queries resulting in a 4x reduction in API response latency.
Python FastAPI Django Redis Celery PostgreSQL AWS -
Full-Stack Software Developer
2019 — 2021Digital Platforms & Automation • Nairobi, KenyaDeveloped client-facing web applications, responsive frontend templates, RESTful API endpoints, and integrated database systems.
- Collaborated on over 15+ software releases delivering cross-browser compliant, accessible digital products.
- Created automated data ingestion scripts and web scraping pipelines for market analytics.
- Spearheaded transition to modern utility-first CSS and componentized layout architectures.
Python Django JavaScript HTML5 CSS3 Git Linux
Architecture, Systems & Engineering Blog
Practical notes, architectural insights, performance profiling, and lessons learned building software.
Technical Due Diligence for Investors & Acquirers: Auditing a Startup's Codebase, Security, and Cloud Costs Before You Buy
Pitch decks and live demos hide catastrophic technical debt. Here is the forensic M&A and seed/Series-A technical due diligence checklist we run for investors …
Fixed-Price Milestone Contracts vs. Time & Materials vs. Dedicated Retainers: How to Structure Your Software Build
Why open-ended hourly billing rewards slow developers—and how smart software buyers structure fixed-price milestone contracts and SLA retainers to guarantee on-time delivery.
Custom Internal Tools & ERP vs. Off-the-Shelf SaaS (Salesforce, HubSpot, SAP): The 3-Year Total Cost of Ownership
Growing from 20 to 150 employees turns '$49/user/month' SaaS subscriptions into a $120,000+ 3-year tax. Here is the exact break-even math for building a …
Private Enterprise AI & RAG on Your Company's Data: How to Deploy Internal AI Assistants Without Leaking Data
Law firms, financial institutions, and enterprises want instant AI search across thousands of internal contracts and SOPs—without exposing confidential data to public AI models …
Automating Invoice, Bank Statement, and Contract Data Entry with AI OCR: Replacing Manual Back-Office Work
Stop paying skilled finance, legal, and operations staff to manually type PDFs into Excel or ERPs. See how hybrid AI OCR + mathematical validation …
Automating Customer Support & Outbound Collections with AI Voice Agents: Real ROI, Costs, and Call Center Benchmarks
How enterprises, lenders, clinics, and logistics firms are cutting call center costs by 70% with sub-500ms conversational AI phone agents connected directly to their …
The devManue Engineering Guarantee
Every system and digital platform is built with uncompromising quality, measurable reliability, and long-term maintainability.
Clean, Maintainable Architecture
Domain-driven separation, full type hinting, comprehensive automated test suites, and zero monolithic technical debt.
Sub-Second Page Latency
Relational database indexing, selective query prefetching, and custom minified asset bundling with zero render blocking.
Defensive Security & Privacy
Strict CSRF/XSS defense, encrypted session storage, and Kenya DPA 2019 / GDPR data privacy compliance.
Let's Build Something Exceptional
Have a platform to architect, ETL pipeline to scale, or looking for contract engineering? Let's connect.