Resume

Interswitch Group Senior Software Engineer

Dec 2023 to Aug 2024
https://www.interswitchgroup.com

• Architected a high-throughput transaction processing engine using C++ and C#/.NET 8, handling over 5,000 TPS for a major payment gateway with 99.99% uptime.
• Designed a reactive dashboard with React/TypeScript and SignalR for live monitoring of 10M+ daily transactions, reducing incident response time by 50%.
• Implemented a distributed caching layer with Redis and .NET Core to decrease database load by 40%, enabling seamless scaling during peak traffic.
• item Developed a cross-border authentication layer using OAuth2 and OpenID Connect (OIDC) with Java 17 and Spring Boot, supporting over 45 APIs for Interswitch’s Paydirect International cross-border services.
• Mentored 3 junior engineers on clean architecture (DDD) and performance profiling, improving team bug rate by 25%.

Parallex Bank Limited Software Engineer

Mar 2022 to Nov 2023
https://www.parallexbank.com

• Led the development of the bank’s high-volume Core Banking API (Finacle integration), serving over 500,000 customers using C#, OracleDB, and FIXML.
• Implemented a real-time document collaboration feature using Operational Transformation (OT) in React and TypeScript, supporting concurrent edits for 100+ users.
• Automated KYC workflows by integrating Azure Form Recognizer and MongoDB, reducing manual verification time by 70%.
• Refactored a legacy WPF application to Blazor WASM, enhancing maintainability and reducing UI-related support tickets by 40%.

Fidelity Bank PLC Software Engineer

Jan 2019 to Oct 2021
https://www.fidelitybank.ng

• Developed a customer-facing loan management portal using Angular and .NET Core, processing over $1M in monthly applications with API latency under 500ms.
• Migrated monolithic .NET Framework APIs to .NET Core microservices, improving deployment frequency by 3x and reducing cloud costs by 35%.
• Introduced xUnit/NUnit testing for critical APIs, achieving over 85% code coverage and eliminating 90% of production regressions.

Sobel.io Rust Developer

• Contributed to LLM projects (llm-chains, comparator-rs) and fine-tuned emotion-detection models.

NgXQuickFix

Overview: SelfService FIX Trading Client using Nigeria Stock Exchange (NGX) FIX5.0SP1 specification

NgXQuickFix is a C++/C# FIX engine integration project aimed at enabling direct, programmable trading access to the Nigeria Stock Exchange (NGX) via the FIX protocol. Built on the robust QuickFIX/N engine, this project provides a foundation for automated or algorithmic trading systems and HFT (High-Frequency Trading) strategies tailored for the NGX ecosystem.
Tools: C#, .NET 9, C++, XML, FIX Protocol, QuickFixN, git.
Role: Author and core maintainer
Link: https://github.com/propenster/NgXQuickFix

trade_sharpp

Overview: A complete suite of High-Frequency Trading setup with C++ backend, C# .NET 8 Frontend (ClientApp), RPC for Order Entry and MarketData FixEngine

A complete suite of High-Frequency Trading (HFT) setup with C++ backend, C# .NET 8 Frontend (ClientApp), RPC for Order Entry and MarketData FixEngine

Tools: C++ 14/17, XML, CMake, FIX Protocol, grpc, Protobuf, QuickFixN, C#, .NET 9, git.
Role: Author and core maintainer
Link: https://github.com/propenster/trade_sharpp

wdlrunner

Overview: Writing a faster Workflow Definition Language (WDL) Compiler and Runner from scratch in C++

wdlrunner is a performance-focused compiler and executor for WDL scripts, designed with fast parsing, accurate AST generation, and lightweight runtime execution in mind. It supports up to 90% of the WDL 1.0 specification already.

Tools: C++ 17, WDL, CMake, git.
Role: Author and core maintainer
Link: https://github.com/propenster/wdlrunner

File Query Language (FQL)

Overview: FQL (File Query Language) is a simple and powerful file querying language designed to help you efficiently search and extract information from text files. Whether you need to analyze log files, parse JSON, or extract specific content from text files, FQL provides a versatile set of commands to simplify the process.
Tools: Rust, VSCode, git.
Role: Author and core maintainer
Link: https://github.com/propenster/fql

PipenGeneX

Overview: pipengenex is a powerful framework designed for creating and executing Bioinformatic pipeline workflows. It includes a Command-Line Utility (CLI) tool for effortlessly running pipeline workflows and tasks defined through JSON workflow definitions. Some notable features of pipengenex include task parallelization and flexible workflow configuration.
Tools: Rust, C#, VSCode, git, Perl.
Role: Author and core maintainer
Link: https://github.com/propenster/pipengenex

ERVCaller-rs

Overview: ERVCaller-rs is a rust port of the popular tool designed to accurately detect and genotype non-reference unfixed endogenous retroviruses (ERVs) and other transposable elements (TEs) in the human genome using next-generation sequencing (NGS) data. The original ERVCaller package was written in perl.
Tools: Rust, VSCode, git, Perl.
Role: Author and core maintainer
Link(s): https://github.com/xunchen85/ERVcaller https://github.com/propenster/ERVCaller-rs

BioBencher

Overview: This is a tool that benchmarks performance and CPU footprint bioinformatics and genomic analysis tools particularly MSA, phyllo tools using our base debigenic genomic and bioinformatic analysis pipeline.
Tools: C#, Rust, docker, git, debigenic, BEDTools, BLAST, Clustalw2, Phylip, HMMER, MUMER, QuEST, VELVET.
Role: Author and core maintainer
Link(s): https://github.com/propenster/biobencher https://hub.docker.com/repository/docker/propenster/debigenic

debigenic

Overview: is an open-source genomic and bioinformatics data analysis pipeline that runs on Debian Linux (Ubuntu 22.04) and contains a setup of over 50 genomic and bioinformatic exploration and analysis tools. It is reproducible, duplicatable, sharable, usable and extendable by anyone, any researcher anywhere in the world. With debigenic, you do no not need to carry an office or research computer anywhere, just find any PC or laptop that could run docker and you have a whole virtual machine (container) that has everything you need for bioinformatics at least almost every tool you might need. It is like you could carry your bioinformatics lab everywhere and in fact share you lab with anyone you want irrespective of where they are.
Tools: docker, linux bash shell, git.
Role: Author and core maintainer
Link: https://hub.docker.com/repository/docker/propenster/debigenic/general

Clash

Overview: is a simple to use, efficient, and full-featured Command Line Argument Parser library for C# .NET. You can use Clash in your CLI applications to parse CommandLine Arguments to C# objects.
Tools: C#, Visual Studio, git
Role: Author and Core Maintainer
Link: https://github.com/propenster/Clash

SimpleHTMLParser

Overview: SimpleHTMLParser is a simple to use, efficient, and full-featured HTML Document Parser for C#. You can parse an HTML document and retrieve any element(s) in it.
Tools: C#, Visual Studio, git
Role: Author and core maintainer
Link: https://github.com/propenster/simplehtmlparser

VealFramework

Overview: A fast, experimental web development framework or microframework for C#. It is meant to be faster, simpler and much easier to run anywhere than Microsoft’s ASP.NET Core. I call it a lightweight web development framework written in 100% C#.
Tools: C#, Visual Studio, git
Role: Author and core maintainer
Link: https://github.com/propenster/veal

Selenium-rs

Overview: selenium-rs is A rust client for the Selenium webdriver (WIP).
Tools: rust, cargo, rustfmt, git, selenium web driver.
Role: Contributor
Link: https://github.com/saresend/selenium-rs

llm-chain

Overview: llm-chain is a powerful rust crate for building chains in large language models allowing you to summarise text and complete complex tasks.
Tools: rust, cargo, rustfmt, git.
Role: Contributor
Link: https://github.com/sobelio/llm-chain

Faker.NET

Overview: I created and I am maintaining a NUGET package for .NET developers to generate dummy/fake data for collections.
Tools: C#, Github markdown, .NET Standard, xUnit.
Role: Author and core maintainer
Link: https://github.com/propenster/Faker.Net

Sluggify-rs

Overview: A simple slug or clean URL generator library for Rust.
Tools: Rust, Github markdown, cargo, crates.io.
Role: Author and core maintainer
Link: https://github.com/propenster/sluggify-rs

RestSharp

Overview: Simple REST and HTTP API Client for. NET.
Tools: C#, markdown.
Role: Contributor
Link: https://github.com/restsharp/RestSharp

llcc94

Overview: Writing a compiler using Rust.
Tools: rustlang, cargo, git.
Role: Contributor
Link: https://github.com/propenster/llcc94