INTRODUCTION
Overview.
I am a Senior Software Architect and the Managing Director of Inselio, a consultancy specializing in Python, AWS, and complex backend architectures.
Currently acting as lead technical consultant for a US-based bank — architecting serverless platforms, ensuring SOC II compliance, and building scalable, secure systems for the financial sector.
I combine deep technical knowledge with the business acumen of a founder, having built and sold an Android app with 1M+ downloads, helping clients bridge the gap between complex code and business goals.
MY SKILLS
Technologies.
FastAPI
Flask
TypeScript
JavaScript
GitHub
Actions
AWS
SAM
WHAT I OFFER
Services.
Cloud Architecture
Serverless AWS platforms built for scale
Multi-region setups with disaster recovery
FinTech Solutions
Banking APIs, payment systems & compliance
ICL, ACH, WIRE & core banking integration
Backend Development
Python microservices & REST APIs
FastAPI, Flask, Node on AWS Lambda
Full-Stack Development
Angular frontends with Python backends
Progressive Web Apps across all platforms
Security & Compliance
SOC II implementation & audit readiness
OAuth 2.0, JWT, AWS WAF & GuardDuty
CI/CD & DevOps
Automated pipelines with GitHub Actions
AWS SAM, staged deployments & monitoring
Mobile Apps
Native Android apps (Java & Kotlin)
From idea to Play Store launch
Tech Consulting
Architecture reviews & strategic guidance
Bridging complex code and business goals
Web Applications
Custom tools tailored to your workflow
Scalable, secure and easy to maintain
CASE STUDIES
Projects.
Photo Map
Photo Map
Native Android app displaying photos on an interactive world map.
Reached 1M+ Play Store downloads. Written in Java and Kotlin.
Sold in 2024.
Trackl
Trackl
A beautiful time tracking app with workspaces and a configurable reference field, which simplifies invoicing a lot.
Progressive Web App, written in Angular and Flask, hosted on AWS EC2 using gunicorn, gevent and nginx.
(Private)
Anyvoy
Anyvoy
An invoicing tool for freelancer and coaches to quickly generate invoices directly on the final layout.
Progressive Web App, written in Angular and Flask, hosted on AWS EC2 using gunicorn, gevent and nginx. Using social login (Google)
Also available in the Google Play Store and the Microsoft Store
Bank API
Bank API
Serverless AWS platform for a US bank — payment APIs (ICL, ACH, WIRE), SOC II compliance, fraud detection.
Multi-region with 99.9% uptime, CI/CD via GitHub Actions & AWS SAM.
(Link on request)
Playlist for Spotify
Playlist for Spotify
An App to get playlist suggestions based on a photo you just took. It's more a fun project to demonstrate what's possible with ML services.
Native Android App, written in Kotlin. Uses AWS image recognition and the Spotify API.
(Link on request)
Käsanova Website
Käsanova Website
A WordPress Website for Käsanova.
Website designed and developed by Me and Jürgen. Bringing the passion for cheese to the digital world.
WORK HISTORY
Experience.
Managing Director & Software Architect
Inselio
Apr 2023 – Present
Lead technical consultant for a US-based bank — serverless AWS platforms, SOC II compliance, and payment APIs
Architected multi-region platform with 99.9% uptime, CI/CD via GitHub Actions & AWS SAM
Fraud detection, RBAC, subledger accounting, and core banking integration (ACH, WIRE, ICL)
Stack: Python, Angular, PostgreSQL, AWS Lambda, Fargate, Cognito
Lead Software Developer
labsolution
Jan 2023 – Jul 2024
Lead developer bringing a healthcare LIS to the next level
Performance, DB transaction handling and task queue mechanisms
Transition to modern web stack: Svelte, FastAPI, ASP.NET, C# async API, Blazor
Stack: Python, SQL, RabbitMQ, Svelte, FastAPI
Senior Software Developer
labsolution
Jan 2020 – Dec 2022
Full-stack senior and lead developer using Python and Angular
Development of new modules, improvements, and workload coordination
Technical decision maker and head of a small development team
Stack: Python, Angular, SQL, JavaScript
Software Developer
labsolution
Sep 2013 – Dec 2019
Developer for a healthcare LIS in the laboratory sector
Complex Python scripts for business logic: pricing, workflows, data sync
Back-end APIs and Angular front-end applications
Stack: Python, Angular, SQL, .NET Framework
App Developer
Levion Software
Apr 2019 – Dec 2021
Founded a small company for Android app development
Built Photo Map — displays photos on a world map, reached 1M+ downloads (sold in 2024)
Volunteered technical support for climate NGOs in Africa
Stack: Java, Kotlin, AWS Lambda
Automation Developer
Grohmann Automation (now Tesla)
May 2010 – Sep 2010
Development of a project management tool in C# and WPF
Development and maintenance of automated production systems
Stack: C#, WPF, SQL, PLC Siemens