nsisong
Senior Backend Engineer
Senior Backend Engineer with 9+ years of experience building scalable APIs, distributed systems, and high performance backend infrastructure. Experienced in Python and TypeScript ecosystems, designing microservices architectures, database schemas, and event driven systems. Proven track record optimizing backend performance, implementing test driven development workflows, and deploying production systems using Docker and CI/CD pipelines. Strong background in financial services, AI platforms, and blockchain integrations.
Experience: 8 years
Yearly salary: $44,000
Hourly rate: $20
Nationality: 🇳🇬 Nigeria
Residency: 🇳🇬 Nigeria
Experience
Backend Engineer (AI Core)
AdCasa (AdGPT) 2025 - 2025
Designed and implemented core backend services as modular APIs, integrating LLM function calling protocols for real-time content generation. Adopted a strict Test-Driven Development (TDD) approach, ensuring 100% test coverage for critical endpoints while maintaining high implementation velocity. Architected scalable database schemas to support complex service integrations, optimizing data fetching processes to be 20x faster. Built robust API integrations for third-party services (ads, analytics) ensuring developer friendly documentation and maintainability. Refined backend infrastructure to support high
LIS Automation Engineer
Duchess Int'l Hospital 2023 - 2025
Engineered a high throughput automation layer to interface directly with Mindray machines and Hematology analyzers, eliminating manual data entry and human error. Developed a custom middleware to parse and transmit HL7 (Health Level Seven) messages, ensuring seamless bidirectional communication between laboratory hardware and the hospital's central database. Handled low-level serial/network socket programming to capture raw machine output, transforming unstructured data into validated, production-ready JSON payloads for the backend. Implemented a strict validation engine to ensure 100% accuracy of patient results during the automated transfer, critical for clinical diagnostic reliability
Skills
api
backend
ci-cd
docker
git
kubernetes
nestjs
node
postgres
pytorch
sql
typescript
python
english