# Nnaemezie Okeke

Nnaemezie Okeke is a remote worker on Himalayas, Software Engineer at Branch International, based in Nigeria.

Source: https://himalayas.app/@nnaemezieokeke

```text
Software Engineer at Branch International building resilient payment systems and high-throughput backend infrastructure.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Nigeria |
| Authorized to work in | Nigeria |
| Salary expectations | 30k+ USD |
| Job categories | Backend Engineer, Full Stack Developer |
| Skills | Backend Development, Distributed Systems, Microservices, Payment Systems, Celery Task Infrastructure, Production Reliability, REST APIs, LLM Integrations, Prompt Injection Defense, Provider Failover, Distributed Tracing, Database Schema Design, Query Optimization, Python, Django |
| Website | https://duziem.github.io |
| LinkedIn | https://linkedin.com/in/nnaemezie-okeke |
| GitHub | https://github.com/duziem |

## About

```text
At Branch International, I build Python payment integrations and a FastAPI routing service that switches between payment gateways when failures occur. I also re-engineered the payments framework with Celery background jobs and transaction event tracking.

At Search Atlas, I re-architected Celery task queues for a Django microservice handling 1.9M+ daily requests. The work eliminated recurring 65K-task backlogs and cut user-facing p90 latency by 96%, from 225 seconds to under 10.

I’ve also hardened an LLM-powered recommendation service against prompt injection across a multi-provider failover chain, and improved production observability with OpenTelemetry tracing. Earlier, I delivered payment-enabled web platforms for Upwork clients, from REST APIs through deployment.
```

## Experience

### Software Engineer (current)

[Branch International](https://himalayas.app/companies/branch-international). Jan 2023 - Present

```text
Built Python REST/microservice payment integrations with third-party providers, engineered a dynamic FastAPI routing service for live gateway switching, and re-engineered the core payments framework with Celery background jobs and real-time event tracking. Delivered a Django-based analytics dashboard and owned frontend delivery in React/Redux for customer-facing transfer flows.
```

Skills: Python, Django, DRF, fastAPI, Celery, REST, Microservices, PostgreSQL, MongoDB, Snowflake, Docker, Kubernetes, AWS, React, Redux, CI-CD, OpenTelemetry, Grafana, Sentry, Datadog

### Software Engineer

[PwC](https://himalayas.app/companies/pwc). Jan 2022 - Dec 2022

```text
Built a Rails-based wallet management system, designed a central authentication service using Devise with JWT and role-based access control, architected PostgreSQL schemas via Django ORM, and resolved performance bottlenecks with Redis caching and algorithmic optimization.
```

Skills: Ruby-on-Rails, Rails-API, Django, PostgreSQL, Redis, Datadog, Pytest, JWT, RBAC

### Software Engineer

Search Atlas. Oct 2020 - Dec 2021

```text
Re-architected Celery task infrastructure for a high-throughput Django microservice, built a real-time deduplication gate, hardened LLM-powered recommendation service against prompt injection, cut CI/CD pipeline time by 60%, led a security hardening audit, resolved a production data-integrity defect, rebuilt a customer-facing backlinks CSV export, instrumented distributed tracing with OpenTelemetr
```

Skills: Django, Celery, Python, PostgreSQL, OpenTelemetry, Grafana, CI-CD, GitHub-Actions, LLM, Prompt-Injection-Defense, Provider-Failover, OpenRouter, OpenAI, Gemini, Perplexity, Sub-Agents, Security-Audits, Distributed-Tracing

### FullStack Web Developer

[Upwork](https://himalayas.app/companies/upwork). Oct 2019 - Sep 2020

```text
Independent full-stack contracting for e-commerce and small-business clients, delivering payment-enabled web platforms end to end. Built e-commerce platforms with product management and hardened checkout and payment flows, designed flexible payment processing across multiple providers, and established unit, integration, and system testing on client projects.
```

Skills: Fullstack-Development, Ecommerce, Payment-Processing, REST-APIs, Middleware, Unit-Testing, Integration-Testing, System-Testing

## Education

### Nnamdi Azikiwe University

Bachelor of Science, Computer Engineering

```text
Bachelor of Science in Computer Engineering from Nnamdi Azikiwe University, completed in 2018.
```

### Cloud Native Computing Foundation

Kubernetes and Cloud Native Associate (KCNA), Kubernetes and Cloud Native

```text
Kubernetes and Cloud Native Associate (KCNA) certification from the Cloud Native Computing Foundation.
```

### Udacity

Nanodegree, Full Stack Development

```text
Full Stack Nanodegree from Udacity.
```

## Tech stack

- Sidekiq
- Snowflake
- Kubernetes
- GitHub Actions
- PostgreSQL
- MongoDB
- Sentry
- Django
- Ruby on Rails
- Redis
- React
- Python
- Ruby
- Flask
- Django REST framework
- FastAPI
- Rails API
- Grafana
- OpenTelemetry
- Datadog
- Gemini
- Redux
- RSpec
- pytest
- Docker
- SQL
- Clickhouse
- OpenRouter
- AWS
- Claude
- OpenAI
- REST APIs

To contact Nnaemezie, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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