Ivan Kahl

Technical Lead

Summary

I've always wanted to build big, super cool systems and help others along the way. I love turning complex ideas into performant software using appropriate design patterns like Domain-Driven Design (DDD), Event-Driven Architecure (EDA), Ports and Adapters or even a straightforward minimal REST API. I strive to continue learning, whether it be new concepts, languages, frameworks or tools. As I learn, I love to share my learnings with others on my personal blog, and in blog posts I write for other companies as a freelance technical writer.

Technical Skills

Software Architecture
Domain-Driven Design (DDD)
Event-Driven Architecture (EDA)
C# (.NET Framework, .NET Core, .NET 5+)
ASP.NET Core
Microsoft SQL Server
PostgreSQL
Azure
AWS
REST Integration
SOAP Integration
FIX Integration
Azure DevOps
GitHub CI/CD
Go
NodeJS
React
Next.js
TypeScript
Sage CRM
Salesforce

Soft Skills

Communication
Leadership
Problem Solving
Work Ethic
Teaching
Collaboration
Organization
Time Management

Experience

Alpha International

Senior Software Engineer (Technical Lead)

April 2023 - Present

Build and maintain our internal Identity Provider based on Duende
Design and build new platform services for other teams
Help maintain testing and deployment pipelines in Azure DevOps
Champion Domain-Driven Design and Event-Driven Architecture across internal teams
Planned and executed migration of services to a private network with NGINXaaS as a reverse proxy
Mentor other developers
Code review and feedback
Collaborate across teams to deliver new products

Skills:

Domain-Driven Design

Event-Driven Architecture

Leadership

Microsoft Azure

PostgreSQL

Azure DevOps

Mercury

Technical Lead

June 2022 - March 2023

Communicate with business stakeholders to plan projects and set appropriate deadlines.
Designed and developed new features for Mercury's core applications.
Architected technical solutions for third party integrations.
Developed CI/CD process for core applications.
Implemented software development workflow for the team in GitHub.
Reviewed code and provided feedback to team members.
Hired and trained new team members.

Skills:

Team Management

Leadership

Microsoft SQL Server

AWS

GitHub Actions

Backend Software Developer

June 2019 - May 2022

Maintained and developed new features on our WordPress website using SOAP and PHP.
Developed a new website for clients to request Tax Clearance Forms from SARS using Vue and ASP.NET.
Designed and developed a framework that encapsulates all our business processes in .NET Standard. This framework is used across all our different platforms.
Developed integrations with banks and other third-parties using REST and FIX.
Collaborated with Ripple, Bitstamp and VALR to bring instant international payments to South Africa.
Worked with South African Reserve Bank in a sandbox to help shape crypto regulations in South Africa.
Hired and trained new team members.

Skills:

PHP

Crypto

JavaScript

Microsoft SQL Server

AWS

Draft.dev

Technical Writer

June 2022 - Present

Research and experiment with different technologies.
Write technical articles using outlines provided.
Collaborate with editors and technical reviewers to refine articles.

Skills:

Technical Writing

Rust

WordPress

JavaScript

.NET

Yellow Duckling

Founder

March 2021 - Present

Developed system for multiple churches to manage attendance limits during the COVID-19 pandemic.
Develop WordPress websites.
Create Google Doc plugin to help manage grades for a tutoring company.
Developed registration form for church using Next.js and Firebase.

Skills:

WordPress

DigitalOcean

Technical Writing

Business Management