Open to opportunities

Allan Weber

@allanweber

Message

I build scalable Java microservices and lead backend teams delivering high-impact financial platforms.

Netherlands

Message

What I'm looking for

I'm looking to lead and build scalable backend and distributed systems in remote, cross-functional EMEA teams, where I can shape technical strategy, mentor engineers, and improve delivery, reliability, and engineering culture.

I've architected high-scale backend systems for European financial institutions as an independent consultant, including Kafka-based real-time access-control updates for more than 1 million business users and a migration from a legacy monolith to 12 domain-driven microservices.

Across Sicredi, Agibank, Sispro Software, and WAES, I've built Java and Spring Boot platforms for financial services, B2B SaaS, IoT, and energy analytics. My work has improved throughput by 10x, reduced cloud resource usage by 35%, cut processing latency by 40%, and supported systems serving millions of customers and 500K+ IoT devices.

I've spent more than six years leading and mentoring engineers, introducing Domain-Driven Design, Test-Driven Development, reusable component libraries, and cloud-native delivery practices that help teams ship faster and build reliable systems.

Experience

Work history, roles, and key accomplishments

Current

Independent Software Consultant

Current

FinTech & Enterprise Solutions

Aug 2020 - Present (6 years)

Architected and delivered high-scale backend systems for European financial institutions, leading technical strategy and hands-on engineering. Designed Kafka-based event-driven architecture for real-time access-control updates and decomposed a legacy monolith into 12 domain-driven microservices.

Senior Software Engineer

WAES

Aug 2019 - Aug 2020 (1 year)

Engineered high-throughput backend systems for an IoT and energy analytics platform. Built reactive APIs using Spring Boot and Postgres to process real-time telemetry from 500K+ IoT devices, and optimized device-data ingestion to reduce processing latency by 40%.

Spring Boot Python Pandas MongoDB GitHub Actions AWS IoT Data Engineering Performance Optimization DevOps

Lead Software Engineer

Sicredi

Dec 2018 - Jul 2019 (7 months)

Led backend engineering initiatives for a financial services platform serving millions of customers. Architected a microservices ecosystem using Java, Spring Boot, and Kubernetes, and established Docker and Kubernetes automation with Jenkins to AWS.

Java Spring Boot Kubernetes Docker Jenkins AWS Python MongoDB Microservices ETL Caching DevOps

Senior Software Engineer

Agibank

Sep 2017 - Dec 2018 (1 year 3 months)

Designed and optimized backend systems for a financial services platform. Implemented event-sourced architecture using Java, Spring Boot, and Kafka, and increased lead enrichment throughput 10x by optimizing MongoDB indexing and Kafka consumer groups.

Java Spring Boot Kafka MongoDB Grafana ELK Stack Cloud Native Observability Event Sourcing

Lead Senior Software Engineer

Sispro Software

Jun 2011 - Apr 2017 (5 years 10 months)

Led backend engineering and architecture for a nationwide B2B SaaS platform. Migrated enterprise applications to cloud-native SaaS architecture using Java, Spring Boot, and Docker, and built a mentoring culture that reduced time-to-market for new features by 40%.

Java Spring Boot Docker AWS SaaS Team Leadership Mentor Component Libraries Architecture Design

Software Engineer

Multiple Roles

May 2008 - Jun 2011 (3 years 1 month)

Progressed from Junior to Mid-level engineer, contributing to enterprise systems across backend and integration technologies. Developed expertise in enterprise application architecture, SQL optimization, and system integration patterns.

Enterprise Architecture SQL System Integration