Software Engineer Backend

Samuel Nwabueze, Software Engineer

Lagos, Nigeria, +234 706-***-****, ****************@*****.***

SUMMARY Dynamic Software Engineer with over 2 years of experience in backend development. Proficient in Java, Spring Boot, and MySQL, having designed microservices for real-time crypto transactions and scalable REST APIs. Successfully implemented caching with Redis and transaction resilience using BullMQ. Led cloud deployments on AWS and DigitalOcean, enhancing system performance and reliability. Committed to leveraging advanced backend solutions to drive innovation and optimisation in software processes, making a significant impact on organisational objectives.

WORK EXPERIENCE

03/2025 – Present Java Backend Engineer, Team FastEgo Remote, Nigeria Engineered core backend systems for a cryptocurrency POS and wallet application that facilitates crypto-to-fiat transactions in real-time. Conceptualised and implemented microservices using Java Spring Boot and MySQL for wallet balance synchronisation, identity verification, and payment routing.

Integrated caching solutions using Redis and constructed resilient transaction queues with BullMQ.

Authored scalable REST APIs that enforced rate-limiting, audit logging, and fraud detection mechanisms.

Ensured comprehensive observability by integrating logging and metrics pipelines with Grafana and Prometheus.

Orchestrated deployments using Docker and GitHub Actions across AWS EC2 and ECS infrastructure.

01/2024 – 02/2025 Backend Engineer, Leverage Growth Digitals Remote, Nigeria Devised the backend architecture for RenewConnect, a platform assisting small businesses in financing renewable energy installations. Engineered modular Spring Boot services with embedded payment APIs. Scrutinised schema design and optimised queries for PostgreSQL-based data layers.

Deployed infrastructure on DigitalOcean, equipped with active monitoring and CI pipelines.

Implemented Kafka event streaming concepts alongside microservice testing routines.

02/2023 – 11/2024 Software Engineer, Premium Hatch Ventures Lagos, Nigeria Supported logistics and inventory applications by developing internal platforms leveraging Java, MongoDB, and Express.js. Constructed backend services for supply chain tracking and reporting APIs. Ensured high availability and fault tolerance through load-balanced deployment strategies.

EDUCATION

05/2024 – 05/2025 Semicolon Africa

Diploma, Software Engineering

312 Herbert Macaulay way Yaba, Nigeria

09/2018 – 03/2023 National Open University of Nigeria B.Sc., Economics

Awka, Study Center, Nigeria

06/2025 – 06/2025 Henley Business School

Certificate, Entrepreneurship Executive

Certificate

312 Herbert Macauley Way, Yaba

SKILLS Java Spring Boot

TypeScript Node.js

AWS (ECS, EKS, S3) DigitalOcean

Firebase MySQL

PostgreSQL Redis

Kafka BullMQ

Webhooks Docker

GitHub Actions Grafana

Prometheus PM2

Clean Architecture SOLID Principles

Microservices TDD

CI/CD REST API Design

Observability SQL

Computer Science Algorithms

Data Structures Collaboration

Database Internals Data Governance

Product Development Security

Learning

Contact this candidate