Open to opportunities

Ernest Inyang

@ernestinyang

Senior backend engineer building secure, scalable fintech systems with event-driven microservices and KYC-ready integrations.

Nigeria

Message

What I'm looking for

I’m looking for a backend role where I can build secure, scalable fintech systems—especially payments, KYC integrations, and event-driven microservices—using strong engineering practices (CI/CD, observability, distributed systems).

I’m a Senior Backend Software Engineer with 6+ years of experience designing and building backend systems for fintech, e-commerce, and identity verification platforms. I focus on distributed systems principles to deliver secure, scalable, and reliable financial services.

At The Dataseed Company (SeedFi), I led the evolution of payment and identity verification services, including building a cross-border remittance platform integrating 4 payment providers across 3 countries/corridors. I processed $40,000 in monthly transaction volume with a 90% transaction success rate, and supported 20% growth in transaction throughput without downtime.

I’ve integrated 5 KYC/identity verification providers (HyperVerge, Prembly, Signzy, Zeeh, Dojah), reducing average onboarding time to 5–10 minutes with fully automated address verification for international users. I also built provider failover and idempotent webhook-driven, event-processing mechanisms across 4 payment providers to eliminate duplicate transaction processing during outages.

Across my roles, I’ve refactored monoliths into microservices, optimized performance with PostgreSQL profiling (reducing query latency by 30%), and automated CI/CD pipelines to improve release frequency and reduce deployment time. My engineering ethos is clean architecture, maintainability through incremental refactoring, and building observability and security into the platform from day one.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

The Dataseed Company (SeedFi)

Aug 2023 - Present (2 years 11 months)

Designed and built a cross-border remittance platform integrating 4 payment providers across 3 countries, processing $40,000 monthly with a 90% transaction success rate. Led KYC/identity verification integrations, implemented idempotent webhook processing with provider failover, and optimized PostgreSQL performance to reduce query latency by 30%.

Java Spring Boot Maven Junit PostgreSQL Redis Docker GitHub Postman Portainer Cross Border Payments KYC Identity Verification Webhooks Idempotent Processing Event Driven Architecture Provider Failover Distributed Systems

Senior Software Engineer

Onhova

Dec 2021 - Jul 2023 (1 year 7 months)

Refactored a monolithic codebase into microservices, improving scalability by 40% and reducing deployment risk across multiple services. Built and supported an e-commerce platform for 1000+ active users and implemented CI/CD automation to cut deployment time by 70%.

Java Spring Boot MySQL Docker Heroku AWS EC2 AWS S3 Jenkins Maven Junit Redis Bitbucket Jira Microservices CI CD

Full Stack Software Engineer

Byteworks Tech

Apr 2021 - Nov 2021 (7 months)

Built a wallet management system integrating secure payment solutions, improving user experience metrics by 35%. Implemented Kafka-based data streaming and strengthened authentication/security using Spring Security with JWT and OAuth 2.0.

Java Spring Boot React PostgreSQL Keycloak Kafka Docker Gradle Junit Bitbucket Jira Postman Kafka Streams Spring Security JWT OAuth 2.0

Software Engineer

Semicolon Africa

Jan 2020 - Apr 2021 (1 year 3 months)

Built and shipped 15+ REST APIs for payments and order processing using TDD. Improved observability by adding Spring Actuator health checks and request/response logging filters, and supported release quality by collaborating with QA on test suites.

Java Spring Boot MySQL Docker Heroku AWS Elastic Beanstalk AWS CodeBuild AWS CodePipeline Maven Junit GitHub Jira Postman REST APIs TDD Observability Logging

Junior Software Engineer

iRespond Africa

Oct 2018 - Dec 2019 (1 year 2 months)

Developed RESTful APIs and optimized MongoDB queries, reducing average query response time by 90%. Built and validated components using unit testing, contributing to a 20% reduction in pre-release defects.