isenewo.dev

$ curl -I https://isenewo.dev

→resolving isenewo.devok
→health check GET /v1/health200 OK
→loading experience8+ years
→counting merged pull requests290+
→verifying AWS certificationverified

all systems operational

Backend Engineer
AWS Certified Solutions Architect

Isenewo
Oluwaseyi Ephraim.

Backend engineer building APIs, payments and distributed systems with Node.js, Go and Python.

or pressEnter

Available · remote or relocation

Isenewo Oluwaseyi Ephraim

Backend Engineer · Kaduna, Nigeria

I build backends
that stay up.

Node.js, Go & Python · AWS Certified Solutions Architect. I design and build backend systems for financial services and commerce: APIs, payments, real-time services and distributed infrastructure, shipped to the cloud with CI/CD.

See my work Download CV

api.isenewo.dev

GET /v1/engineers/isenewo

streaming…application/json · 38 ms

All systems operational

status · last 8 years

Years building backends: 8+
Merged open-source PRs: 290+
AWS certifications: 2
API reliability at Leadway: 99.9%

01/about

Engineering for systems that can't afford to fail.

Backend engineer with 8 years of experience building APIs and services for insurance, commerce and public-sector platforms. I currently build the APIs behind Leadway Assurance’s Life Assurance business application and maintain NFTopia, an open-source NFT platform, where I review contributions from developers around the world.

What I do

01
API & Service Design
REST · GraphQL · WebSockets · Auth & RBAC · Payments integration
02
Data & Reliability
Schema design · Query optimisation · Caching · Queues & background jobs · Rate limiting · Audit logging
03
Cloud & Delivery
AWS (ECS, Lambda, RDS, S3) · Azure · Terraform · Docker · CI/CD · Observability
04
Blockchain (bonus)
Stellar / Soroban · Starknet / Cairo · Smart-contract integration

Oct 2025

AWS Certified Solutions Architect – Associate

Amazon Web Services · Trained through ALX Africa

Verify on Credly

Jun 2025

AWS Certified Cloud Practitioner

Amazon Web Services · Trained through ALX Africa

Verify on Credly

Stack

Languages

Node.js (TypeScript)
Go
Python
Java
Rust

Frameworks

Nest.js
Express
Gin
Django / DRF
FastAPI
Spring Boot
Axum

Data

PostgreSQL
Redis
MySQL
MongoDB

Cloud & DevOps

AWS
Azure
Docker
Terraform
Kubernetes
GitHub Actions

02/experience

Eight years of production traffic.

From client platforms for Kaduna State’s tech ecosystem to insurance APIs and open-source maintainership. Here is the trace.

trace · career

2018 → now

Leadway Assurance Company Ltd.
Backend Engineer
live
NFTopia
Open-Source Maintainer
live
De-Extralucid Tech World
Backend Engineer
2018–24

2025 – Present
Backend Engineer
Leadway Assurance Company Ltd.
Build and maintain the APIs behind Leadway’s Life Assurance business application, used by brokers and clients to manage policies and claims.
- Design and maintain the REST APIs that power the Life Assurance broker and client portals, sustaining 99.9% API reliability.
- Optimise high-volume policy and claims endpoints with query tuning and caching to cut average response times.
- Implement authentication, role-based access control and audit logging to meet financial-services compliance requirements.
- Ship through Azure CI/CD pipelines with zero-downtime deployments, working with DevOps on monitoring.
- Refactor legacy modules into modular, testable Nest.js services, reducing recurring bugs.
- Node.js
- Nest.js
- TypeScript
- PostgreSQL
- Azure
- Docker
- CI/CD
2025 – Present
Open-Source Maintainer
NFTopia (via OnlyDust, Drips & GrantFox)
Maintain NFTopia, an open-source platform for minting, auctioning and trading NFTs, built by a global community of contributors.
- Led the platform through two architecture changes: from a Starknet app to separate backend services (Nest.js API, notifications, Django analytics, payments, marketplace), then to a Stellar/Soroban monorepo.
- Merged 100+ of my own PRs and reviewed 30+ community PRs, enforcing clean architecture, testing and code-quality standards.
- Own roadmap decisions on API design, database schema evolution and error handling.
- Built the CI pipelines and contribution checks, deployed testnet contracts, and mentor new contributors.
NFTopia on GitHub
- Nest.js
- TypeScript
- GraphQL
- Django
- PostgreSQL
- Rust (Soroban)
- Cairo
- Docker
2018 – 2024
Backend Engineer
De-Extralucid Tech World, Kaduna
Built backends for web platforms serving Kaduna State’s public institutions and tech ecosystem, delivered by a local software development company.
- KAD ICT Hub: built backend features for the state innovation hub’s platform, including user accounts, training-programme and course registration, startup applications and events.
- Digital Kaduna (a Gates Foundation-funded lab run by DFS Lab and CoLab): backend for publishing research reports and blog content, event and hackathon registration, and newsletter subscriptions.
- Kadahive Innovation & Tech Hub: member-portal backend covering member accounts and dashboards, co-working space booking, event registration, a resource library and billing.
- Designed relational schemas and REST APIs for web and mobile clients, and introduced Git workflows and CI practices for faster, safer releases.
KAD ICT Hub Digital Kaduna Kadahive
- Python
- Django
- Node.js
- PHP
- MySQL
- PostgreSQL
- REST APIs
- Git

03/work

Systems in production.

Employer, client and personal platforms. Open any project for the engineering decisions behind it.

Leadway Assurance · Backend Engineer (2025 – present)

Backend APIs for Leadway Assurance’s Life Assurance business application, powering the broker and client portals that manage policies and claims.

Node.js
Nest.js
TypeScript
PostgreSQL
Azure
Client work

Visit Leadway

Personal project

Multi-vendor commerce and delivery platform covering checkout, parcel dispatch, courier workflows and vendor operations across web, admin and mobile clients.