Ifechukwu Ogidi
Backend Engineer · Fintech ·
Crypto · AI Integration
I build the backend for products that move real money and real data: payment rails, ledger systems, agentic AI pipelines, and Web3 infrastructure engineered to hold up under pressure.
Ifechukwu Ogidi
Backend Engineer
@ LDB Africa
About
Backend engineer who builds systems that hold up under pressure
I build the backend layer for products handling real transactions - double-entry ledgers, fault-tolerant payment systems, agentic AI pipelines, and Web3 infrastructure. The focus is the same across all of it: stay correct, stay available, and fail safely when something breaks.
Lately that's meant working at the point where AI meets infrastructure - pipelines that combine language models with the same reliability guarantees fintech and crypto systems demand.
Fintech & Payments
Double-entry ledgers, payment rails, Stripe/Paystack/Flutterwave integrations, reconciliation systems, and audit trails built for fault tolerance at scale.
Crypto / Web3
Backend infrastructure for decentralised systems — wallet backends, crypto/fiat unified transaction workflows, and multi-chain data pipelines.
AI Integration
Agentic pipelines with RAG, vector search, embedding retrieval, and human-in-the-loop orchestration. Custom-built, no off-the-shelf shortcuts.
Cloud & DevOps
Containerised deployments on AWS, CI/CD via GitHub Actions, Linux administration, Nginx reverse proxies, and structured logging for fast incident response.
Experience
Building in the field, since 2024.
Backend EngineerDec 2025 - Present
LDB AfricaRemote- Built secure identity management and compliance validation pipelines using OAuth2 and JWT, handling sensitive user data across regulatory requirements.
- Developed unified transaction workflows supporting both cryptocurrency and fiat payment networks.
- Led architectural trade-off discussions balancing system maintainability, high availability, and delivery speed.
Backend EngineerJan 2026 - May 2026
Circuit SystemsRemote- Designed and built core REST APIs for e-commerce order orchestration, vendor workflows, and multi-provider payment integrations.
- Built an internal wallet-based payment processing engine to receive and hold funds, replacing direct point-of-sale payment integration.
- Resolved critical production bottlenecks across distributed services and CI/CD pipelines while maintaining 99.9% uptime.
- Introduced structured logging and error tracking that measurably improved incident response time.
- Collaborated asynchronously with product and frontend teams using GitFlow and automated staging pipelines.
Backend EngineerJan 2024 - Dec 2025
FreelanceClients: Tags Marketplace (California), MonieMata (fintech), The Lord's Brethren Church (nonprofit).Remote- Built production REST APIs for fintech and edutech applications using FastAPI and Django.
- Integrated Stripe, Paystack, and Flutterwave with rigorous webhook validation and rollback logic.
- Designed and deployed a digital church platform on AWS: member management, event scheduling, role-based access, and an online donation payment gateway.
- Audited legacy systems to diagnose performance issues, reducing API response latency and improving availability to 99.9%.
Software EngineerApr 2024 - Dec 2025
MICTU, Nnamdi Azikiwe UniversityAwka, Anambra State- Co-built an institutional candidate registration portal that handled 5,000+ concurrent active users without performance degradation.
- Designed secure data-access APIs for academic records with Redis caching to reduce database read load.
- Established modular, testable code patterns that reduced technical debt for future maintainers.
Skills
The stack I trust for production systems
Backend & APIs
Data & Storage
Infrastructure & DevOps
AI & Emerging Tech
Certificates
Proof of continuous learning
A selection of certifications and credentials that support the work I do across backend engineering, fintech, cloud infrastructure, and AI systems.
Mastering Backend2026
AI Backend Engineering
Tech4Dev2025
Backend Development
HNG Internship2023
HNG Finalist
Projects
Systems built for real stakes
- 01
Live in production Visit live
Multi-Seller E-Commerce Platform
Built the entire backend for a live multi-vendor marketplace. PostgreSQL schema with advanced indexing and Redis caching for heavy inventory and transactional loads. Stripe payment integration with bulletproof error handling and rollback workflows.
Visit liveDjangoDRFPostgreSQLRedisStripePython - 02
Production-grade ledger
Enterprise Bill Payment & Ledger API
Architected a strict double-entry ledger system for fault-tolerant wallet balances and audit trails. Implemented reconciliation, verification, and automated retry logic to prevent race conditions during high-frequency transactions.
FastAPIPostgreSQLPythonFintechDistributed Systems - 03
Custom RAG Visit live
AI Document Aggregator & Chapter Generator
Agentic document pipeline using FastAPI, OpenAI, and pgvector. Ingests and chunks documents into a vector database for semantic retrieval, generates a structured content plan for human approval, then orchestrates chapter-by-chapter generation grounded in source material. Custom orchestration layer — no off-the-shelf frameworks.
Visit liveFastAPIOpenAIpgvectorRAGPythonAI