Open to opportunities

Daniel Nwangwu

@danielnwangwu

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Seasoned backend engineer specializing in scalable systems, payments, and Golang-driven reliability.

Nigeria

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What I'm looking for

I seek a role leading backend architecture and reliability work at a mission-driven company, focusing on payments, scalable systems, and team mentorship.

I am a backend engineer with over 5 years of experience designing scalable microservices, high-performance APIs, and mission-critical financial and creator platforms. I focus on system reliability, observability, and SLO-driven operations while mentoring engineering teams and driving technical alignment.

My core technical strengths include Golang (4+ years), TypeScript, Python, PostgreSQL, distributed systems, and DevOps practices such as Docker, CI/CD, and observability tooling. I have built wallets, payment flows, and banking APIs with gRPC/REST, implemented double-entry accounting systems, and optimized performance using pprof and benchmarks.

I deliver pragmatic architecture and measurable impact: migrating monoliths to microservices, reducing feature delivery time through TypeScript adoption, and improving dashboard performance and platform uptime. I seek roles where I can lead technical design, improve reliability, and scale critical infrastructure.

Experience

Work history, roles, and key accomplishments

Current

Golang Backend Engineer

Current

GetProspa

Jan 2025 - Present (10 months)

Designing and maintaining Golang microservices for core banking and payments, improving reliability, observability, and performance across APIs and data pipelines.

Golang Microservices PostgreSQL gRPC Observability Performance Tuning Distributed Systems CI CD

Current

Technical Lead

Current

Barlary

Jan 2024 - Present (1 year 10 months)

Architected and led implementation of a double-entry wallet system in Golang with row-level locking and atomic transactions to ensure robust, auditable financial operations.

Golang PostgreSQL Concurrency Distributed Systems Wallet Architecture Reliability

Current

Backend Engineer

Current

Talenvo

Jan 2023 - Present (2 years 10 months)

Led migration from monolith to microservices, increasing platform uptime and scalability while implementing API design patterns and documentation standards.

Microservices API Design Golang PostgreSQL Documentation Scalability Reliability CI CD

Senior Backend Engineer

Paronify

Jan 2023 - Jan 2025 (2 years)

Built and scaled creator tools including media management, memberships, and shop functionality, and implemented reliable payment flows with multiple gateway integrations.

Backend Development Payments PostgreSQL API Integration Performance Optimization Golang Media Management Reliability

Software Engineer

Sterling Bank

Jan 2022 - Jan 2025 (3 years)

Migrated a large JavaScript codebase to TypeScript, reducing feature delivery time by over 40% and implemented automated testing and CI/CD pipelines.

TypeScript JavaScript CI CD Testing Automation PostgreSQL DevOps

Backend Engineer

Sproutly

Jan 2022 - Jan 2023 (1 year)

Decomposed monolithic systems into scalable microservices, established domain modeling conventions, and improved cross-team collaboration through clearer system architecture.

Microservices Golang Systems Architecture Collaboration PostgreSQL Docker CI CD

Education

Degrees, certifications, and relevant coursework

Federal University of Technology, Minna

Bachelor of Technology, Cyber Security Science

2015 - 2020

Completed a Bachelor-level technology program focused on cybersecurity and applied computing, covering core topics in security, networking, and systems.