Performance Optimization
Your Legacy .NET Payment System Isn't Slow, You're Using It Wrong
How to get 100x performance without a €20M rewrite
I Fix Fintech Systems
Performance optimization, failed migrations, platform modernization. Hands-on engineering consultant.
Latest Blog Post
View All Posts →Proven Track Record
Real transformations at major Nordic banks and payment providers
Legacy System Migration
Major Nordic Bank
- ✓Quarterly → Daily releases
- ✓Zero downtime migration
- ✓Practices adopted enterprise-wide
Payment Platform Scale
Leading Payment Provider
- ✓1M+ daily transactions
- ✓10ms processing latency
- ✓100x performance improvement
Consultancy Services
I work directly with your team to fix what's broken and build what works
Performance Optimization
Fix your slow legacy systems without costly rewrites. Database optimization, query tuning, and architectural improvements.
Payment Integration
Secure payment gateway integration and processing systems. Multi-currency support with reconciliation and settlement.
DevOps & Infrastructure
Kubernetes orchestration, CI/CD pipelines, and cloud architecture. High-availability systems with automated scaling.
System Architecture
Pragmatic architecture decisions based on your actual needs. From optimizing existing systems to designing new ones - choosing what works, not what's trendy.
Technical Expertise
Core technologies for building robust financial systems
KubernetesKafkaPostgreSQLSQL Server.NETJavaClojureElixir
Industry Experience
BanksPayment ProvidersDigital WalletsFintechs
EJTech
Fintech Engineering Consultancy
0
Downtime During Migrations
100x
Performance Improvements
Daily
Releases (from Quarterly)
I deliver what your failed transformation promised: systems that are fast, reliable, and actually ship features.
With 7+ years in Nordic fintech, I've seen every type of failure - from 3-year rewrites that delivered nothing to 'modern' platforms slower than what they replaced. I know what actually works because I've done it: zero-downtime migrations, 100x performance improvements, and release cycles from quarterly to daily.
Whether you need to fix your existing SQL Server bottlenecks or build event-driven systems with Kafka, I bring hands-on engineering expertise, not PowerPoints.
Stop Wasting Money on Failed Transformations
Let's fix your system the right way
Get in Touch
Let's discuss your fintech challenges and how I can help solve them.
I typically respond within 24 hours