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Ifechukwu

Ogidi

Backend Engineer  ·  Fintech  ·  Crypto  ·  AI Integration

I build the backbone of products that move real money and real data — payment rails, ledger systems, agentic AI pipelines, and Web3 backends that hold up under pressure.

FintechCrypto / Web3AI SystemsCloud DevOps
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Ifechukwu Ogidi
Available

Ifechukwu Ogidi

Backend Engineer

@ LDB Africa

About

Backend engineer who builds systems that hold up under pressure

I build the backbone of products that move real money and real data. From double-entry ledgers and fault-tolerant payment systems in fintech, to agentic AI pipelines and Web3 backends — I specialise in backend engineering that holds up under pressure.

Currently exploring the intersection of AI and software infrastructure, building systems where intelligence meets reliability.

3+
Years active
5+
Live Projects
10+
Stack depth
₿

Fintech & Payments

Double-entry ledgers, payment rails, Stripe/Paystack/Flutterwave integrations, reconciliation systems, and audit trails built for fault tolerance at scale.

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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.

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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 Engineer

Current

LDB Africa

Dec 2025 – PresentRemote
  • 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 Engineer

Circuit Systems

Jan 2026 – May 2026Remote
  • 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 Engineer

Freelance

Jan 2024 – Dec 2025Remote

Clients: Tags Marketplace (California), MonieMata (fintech), The Lord's Brethren Church (nonprofit).

  • 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 Engineer

MICTU, Nnamdi Azikiwe University

Apr 2024 – Dec 2025Awka, 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 with production systems

Backend & APIs

PythonFastAPIDjangoDjango REST FrameworkTortoiseORM

Data & Storage

PostgreSQLRedispgvectorSQLVector Databases

Infrastructure & DevOps

DockerGitHub ActionsLinuxAWSNginxCloud Deployment

AI & Emerging Tech

OpenAI APIRAG PipelinesEmbedding SearchAgentic SystemsWeb3 BackendSemantic Retrieval
$always_learning --domains ai,blockchain,distributed-systems

Projects

Systems built for real stakes

Live in production

Multi-Seller E-Commerce Platform

Visit Live

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.

DjangoDRFPostgreSQLRedisStripePython
Zero-downtime finance

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
Custom RAG architecture

AI Document Aggregator & Chapter Generator

Visit Live

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.

FastAPIOpenAIpgvectorRAGPythonAI