SYSTEM_STATUS: ONLINE

PORTFOLIO_VERSION: 3.14.159

dev@portfolio-system

CPU: 0%MEM: 0%NET: 0%UP: 0d 0h 0m

Joshua Ndeleva

Senior Full-Stack Engineer

CONTACT_MATRIX

EMAIL LINKEDIN GITHUB

SYSTEM_OVERVIEW

> cat /profile/summary.txt

Senior Full-Stack Engineer with 6+ years of commercial experience building fintech platforms using Node.js (NestJS) and React (Next.js). Proven record delivering high-load systems, payment integrations, and event-driven architectures with measurable impact on performance, reliability, and business outcomes. Strong ownership mindset from design to production.

TECH_STACK_RADAR

FRONTEND

React

Next.js

TypeScript

BACKEND

Node.js

NestJS

REST

DATA & MESSAGING

MySQL

PostgreSQL

MongoDB

ENGINEERING

Microservices

TDD

CI/CD

PERFORMANCE_METRICS

PROJECTS

POSITIONS

SKILLS

CERTS

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> ls -la /experience/

Senior Full-Stack Engineer

@Riverbank Solutions (Fintech)

> cat responsibilities.log

Scaled a fintech platform to support 10,000+ concurrent users by architecting NestJS microservices and React/Next.js frontends with clear API contracts.

Reduced transaction latency by 30% by introducing event-driven processing with RabbitMQ, Kafka, and BullMQ.

Integrated Stripe (payments, webhooks, refunds, reconciliation) with idempotent processing and failure recovery.

Implemented domestic tax and fiscal APIs, translating regulatory requirements into auditable backend workflows.

Preserved financial data integrity under load using SQL ACID transactions, indexing, and transactional boundaries.

Improved throughput using Redis for caching, idempotency keys, rate limiting, and queue coordination.

Delivered performance-critical React + TypeScript UIs (SPA + SSR) optimized for data fetching and rendering.

Shipped features end-to-end in bi-weekly SCRUM sprints with backend, frontend, and DevOps teams.

DURATION

January 2023 – PRESENT

Senior Full-Stack Engineer

@Zed Payments (Fintech)

> cat responsibilities.log

Built full-stack payment and account-management features serving 200,000+ MAU using Node.js/NestJS and React.

Cut page load times by 40% by optimizing React rendering, GraphQL queries, and frontend caching.

Designed modular React components with TypeScript, Apollo, and Material UI.

Processed high-volume background jobs with RabbitMQ, Redis, and BullMQ.

Optimized MySQL and MongoDB queries, improving API response times by 35%.

Integrated multiple third-party APIs across a microservice architecture.

DURATION

January 2022 – January 2023

Software Engineer (Full-Stack)

@CVMAMA

> cat responsibilities.log

Built Node.js APIs and React/Next.js frontends, improving backend response times by 40%.

Increased mobile retention by 25% through SSR, caching, and frontend performance optimizations.

Delivered features end-to-end with product and design teams.

DURATION

January 2019 – January 2022

> ./skills --list-all

FRONTEND

> cat frontend.txt

React

Next.js

TypeScript

JavaScript (ES6+)

Apollo

Material UI

BACKEND

> cat backend.txt

Node.js

NestJS

REST

GraphQL

WebSockets

DATA & MESSAGING

> cat data & messaging.txt

MySQL

PostgreSQL

MongoDB

Redis

RabbitMQ

Kafka

BullMQ

ENGINEERING

> cat engineering.txt

Microservices

TDD

CI/CD

Docker

Kubernetes

Git

> find /education -type f

BSc. Computer Science

Jomo Kenyatta University of Agriculture and Technology

January 2020

GPA: 3.8