Full-Stack Engineer • Lead • Production Systems
Dennis MwangiWanja

I’m a full-stack Developer who ships AI products, e-commerce platforms, banking & payments infrastructure, and Web3 trading systems. For 5+ years, I’ve led delivery of secure, fast software that holds up under real users and real money.

AI ProductsE-commerce PlatformsFintech & BankingWeb3 SystemsTrading Automation
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About
I build systems people can trust.

I’m Dennis Mwangi Wanja — I build AI products and financial systems. From payments and e-commerce to crypto and trading automation, I ship reliable software that works in production.

I lead hands-on: clear architecture, fast execution, strong standards. I’ve mentored blockchain and AI teams across Rwanda, Uganda, Bangladesh, and Dubai.

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Years Experience
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Hours Shipped in Production
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Users Reached
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Exchange Integrations
Core stack
TypeScriptReactNext.jsNode.jsRustPythonPostgreSQL
Selected Work
Products built for real users

A curated set of platforms across fintech, AI, and DeFi—designed with performance, security, and clarity as first-class features.

Lively Root preview
Open
E-Commerce • Horticulture

Lively Root

Bonsai and curated plants delivered with guidance that builds confidence.

Lively Root is an online plant destination focused on bonsai and curated plant selections, shipped directly to customers. The experience emphasizes easy discovery (including a plant-finder quiz), gifting and subscriptions, and practical education through care guides—backed by a 30-day happiness guarantee and expert support.

Next.jsTypeScriptE-CommerceUX Systems
Live productVisit Lively Root
ShopPop.ink preview
Open
AI • E-Commerce

ShopPop.ink

Personalization that feels helpful—not pushy.

An AI-powered e-commerce platform that blends fast storefront UX with intelligent recommendations. Built to support product discovery, personalized experiences, and operational scale—without sacrificing performance or trust.

Next.jsTypeScriptGemini AIStripe
Live productVisit ShopPop.ink
Walbi Exchange preview
Open
DeFi • Web3

Walbi Exchange

On-chain execution with a product-grade experience.

An AI-assisted decentralized exchange built around automation and clarity—supporting automated market making and predictive trading insights. Designed for reliability, composability, and smooth user flows across key trading actions.

SolidityReactAI/MLThe Graph
Live productVisit Walbi
TinyAssistants.ai preview
Open
AI • SaaS

TinyAssistants.ai

Assistants that reduce friction and move people forward.

A conversational AI platform for career development and technical guidance. Built for clean UX, fast iteration, and scalable retrieval—so users get useful, context-aware support instead of generic answers.

Next.jsTypeScriptLLMVector DB
Live productVisit TinyAssistants.ai
Edge Cards preview
Open
Fintech • Banking

Edge Cards

Banking-grade UX with systems-level discipline.

A multi-currency card ecosystem built for cross-border use—designed around high availability microservices and security-first architecture. Emphasis on reliability, auditability, and smooth real-time experiences where trust matters most.

React NativeNext.jsMicroservicesPostgreSQL
Live productVisit Edge Cards
View all projects on GitHub
Technical strengths
Capabilities that ship products.

I build systems that stay fast under load, remain secure by design, and feel simple to use.

TypeScript· 95%React / Next.js· 95%FX Aggregation· 95%PostgreSQL· 95%Cross-border Payments· 92%DApp Architecture· 92%

Trading Systems

HFT, Algo Trading

Payments

Cross-border, FX

DeFi

DEX, AMM, Bridges

AI/ML

LLMs, Agents

Distributed

Microservices

Security

Compliance-ready

Languages & Frameworks

Skills weighted by experience & impact

Fintech & Trading

Skills weighted by experience & impact

Web3 & DeFi

Skills weighted by experience & impact

AI & Machine Learning

Skills weighted by experience & impact

Data & Backend

Skills weighted by experience & impact

Cloud & DevOps

Skills weighted by experience & impact

Developer Pulse

A GitHub snapshot + WakaTime chart—clear visual proof of consistency.

— contributions in 2025

@DENNIS-CODESGitHub contribution graph
Year2025
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WakaTime signal

Live chart (SVG) • Cached for instant switching

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Certifications & Credentials
Microsoft Certified: Azure AI Engineer Associate
Applied AI in Finance — CFTE
AI in Blockchain Certification — Blockchain Council
Blockchain Expert — NGENI Labs
Quantitative Automation & DeFi Systems — EQAM Capital
Career Journey
How I grew fromDeveloper → Senior → CTO
2025Jan 2025 — Present

Chief Technology Officer (CTO) — Product & Engineering

NGENI Labs
Remote / Nairobi, Kenya
  • Stepped into the CTO seat and took full ownership of delivery: roadmap → architecture → execution → launch
  • Led the Edge Cards engineering direction — designed the system like a bank would: security-first, resilient, and scalable
  • Built and shipped AI-first products (ShopPop.ink + TinyAssistants.ai) with real product thinking: onboarding, retention, and performance
  • Raised the bar for code quality and delivery speed through reviews, standards, and mentoring across Kenya, Dubai, Uganda, and Rwanda
Impact

Today I run the engineering engine at NGENI — shipping production systems that feel fast, safe, and reliable for real users.

2024Oct 2022 — Dec 2024

Senior Blockchain & AI Engineer — Web3 & AI Division

NGENI Labs
Remote / Nairobi, Kenya
  • Architected Edge Cards (KCB Group ecosystem) — guided core decisions across React Native + Next.js + services for high availability
  • Built ShopPop.ink — an AI-powered e-commerce experience where recommendations actually feel personal (Gemini AI integration)
  • Created TinyAssistants.ai — conversational assistants for career + coding support, focused on useful UX not “AI demos”
  • Shipped Walbi Exchange — AI-powered DEX features around automation and predictive insights (delivery + iteration)
Impact

This was the phase where I stopped ‘building features’ and started building products — end-to-end, with accountability.

2023Dec 2021 — Dec 2023

Senior Software Developer — Quant & DeFi Systems

EQAM Capital
Remote / Nairobi, Kenya
  • Promoted into senior ownership — I wasn’t just coding strategies, I was shaping the trading system architecture
  • Built 20+ TradingView bots (GodCandle, DayTrader, RSRW) and turned them into repeatable, testable systems
  • Engineered a unified trading interface across 10+ exchanges with <300ms execution — optimized for speed and reliability
  • Automated risk controls + real-time PnL reporting so decisions were based on truth, not vibes
Impact

We moved from manual trading pain to a real trading platform: faster execution, clearer risk, and scalable strategy ops.

2022Jan 2022 — Nov 2022

Software Developer — Trading Automation

EQAM Capital
Remote / Nairobi, Kenya
  • Joined as a developer and quickly became the person people relied on when the system had to work under pressure
  • Helped turn raw strategy ideas into working bots and dashboards that traders could actually use daily
  • Improved execution consistency and made performance reporting easier to trust
Impact

My focus here was simple: ship dependable systems that traders could run every day without babysitting.

2021Jan 2021 — Dec 2021

Software Developer — Fintech & Product Engineering

NGENI Labs
Nairobi, Kenya
  • Started my journey at NGENI as a developer — building fast, learning faster, and taking on bigger ownership each sprint
  • Worked across full-stack delivery: backend APIs, frontend experiences, integrations, and production hardening
  • Built with a product mindset early: performance, reliability, and clean UX mattered as much as features
Impact

This is where I built my foundation — not just coding, but building real systems people can trust.

—Jan 2024 — 2024 (Business Closed)

Chief Technology Officer (CTO) — FX & Payments Infrastructure

Dollar Markets Africa
Nairobi, Kenya
  • Joined to lead the technology vision — built the product like infrastructure, not a prototype
  • Created DollarsApp — a real-time FX aggregator pulling rates from major banks and packaging them into a clean experience
  • Designed backend systems for high throughput + low latency, with reconciliation and auditability baked in
  • Implemented compliance-minded architecture (secure APIs, monitoring, operational visibility)
Impact

Even though the business closed, the work proved a point: I can build fintech infrastructure that’s fast, secure, and production-ready.

Get in Touch
Let's Build Something Great

Open for FullStack roles, technical consulting, and ambitious projects in AI, e-commerce, fintech, Web3, and Trading. Let's discuss how I can help bring your vision to life.

Send an EmailConnect on LinkedInMessage on Telegram
Nairobi, Kenya
dennismwangidev@gmail.com