I'm a FinTech Systems Engineer specializing in transaction processing, payment integrations, cryptographic key management, and cloud-native infrastructure.
I build the technical backbone that powers POS terminals, payment gateways, card transactions, and secure financial communications.
I’ve engineered ISO8583 processors, HSM encryption SDKs, POS/MPOS integrations, and DevOps automation for fintechs and financial institutions — including implementations with NIBSS, PTSPs, UPSL, OPAY, HabariPay, eTranzact, and SmartCash.
I love building reliable, secure, clean financial infrastructure.
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ISO8583 Message Processing
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HSM (Thales) — ZPK/ZMK Encryption
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PIN Block Translation
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POS / mPOS Integrations
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NIBSS / UPSL / PTSPs / Terminal Management
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Key Exchange & Cryptographic Algorithms
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Transaction Message Simulation
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Python · NodeJS · C#
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REST APIs · Microservices
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Fraud Detection Algorithms
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Secure backend system design
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Docker · Kubernetes · Terraform
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CI/CD (GitHub Actions, Jenkins)
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Observability (FluentBit, Logging Pipelines)
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Distributed Systems
- PostgreSQL · MSSQL · MySQL · MongoDB
Below are some of my strongest engineering achievements.
Custom SDK for working with Thales HSM, enabling:
✔ ZPK encryption
✔ Key translation
✔ Secure key exchange flows
✔ Integration for POS/terminal vendors
Tech: Python, HSM APIs, Cryptography
A full ISO8583 engine capable of:
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Building & parsing bitmaps
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Supporting 0100/0200/0210/0400 flows
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Supporting POS, ATM & web gateways
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Plug-in architecture for custom message specs
Tech: Python or NodeJS, ISO8583 spec
A simulator for fintech/payment testing:
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Generates mock POS/NIBSS/UPSL messages
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Sends ISO8583 requests to switches
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Simulates reversals, declines, timeouts
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Used for partner onboarding/testing
Automated onboarding + integration pipeline for APOS terminals.
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Reduces manual integration time
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Validates merchant configuration
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Automates ISO payload generation & validation
Tech: Docker, Python, CI/CD
Lightweight rules-based system for identifying suspicious transactions.
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Velocity checks
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Pattern detection
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Geo-risk indicators
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Transaction profiling
Tech: Python, Data Structures, AWS EC2
FinTech switching, POS/MPOS, NIBSS/PTSA integrations, ISO8583, HSM, APOS pipelines.
Payment APIs, fraud detection, multi-tenant Kubernetes, Stripe integration.
Enterprise cloud operations, microservices deployment, RCA.
| Area | Tools |
|---|---|
| Programming | Python, NodeJS, C#, Bash |
| Payments | ISO8583, HSM/Thales, POS/MPOS, NIBSS |
| Cloud | AWS, Kubernetes, Docker |
| DevOps | Terraform, GitHub Actions, Jenkins |
| Databases | PostgreSQL, MongoDB, MSSQL, MySQL |
| Observability | FluentBit |
If you're working on:
✔ Payment processing systems
✔ POS/MPOS integrations
✔ ISO8583-based gateways
✔ Secure fintech infrastructure
✔ Cloud-native microservices
I’d love to connect.
📧 Email: frankodey2@gmail.com
🔗 LinkedIn: https://linkedin.com/in/frankodey
💻 GitHub: https://github.com/FrankOdey
I like building systems that:
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Never break silently
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Scale elegantly
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Stay secure by design
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Are simple inside, even if complex outside