BUILD · MODERNIZE · OPERATE

Senior engineering for complex software systems.

Draaisma Tech helps organizations design, build and evolve reliable software systems – combining hands-on engineering with architecture and technical leadership.

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REMOTE · BRAZIL · INTERNATIONAL B2B

“Complex systems don’t come with instructions. That’s where engineering experience matters.”

20

YEARS OF EXPERIENCE

Enterprise software, SaaS, healthcare and financial systems.

100K+

TRANSACTIONS / MONTH

Real-world, high-volume production systems.

500+

FIELD WORKERS SUPPORTED

Scalable solutions for operational and distributed teams.

TRUSTED IN COMPLEX ENVIRONMENTS

Reliability, security and long-term value.

WHAT WE DO

Engineering from problem to production.

Software engineering is more than implementing tickets. We work across the full lifecycle of a system – from understanding the business problem and shaping the solution through architecture, implementation, testing, deployment and production.

Product Engineering

Build and evolve business-critical software products.

End-to-end engineering across backend, frontend, integrations, data and production systems.

Architecture & Modernization

Understand complex systems and evolve them incrementally.

Architecture, refactoring and modernization without unnecessarily disrupting the business.

Platform & Production Engineering

Infrastructure, CI/CD and reliable production systems.

Build the foundations that make software repeatable, observable, secure and resilient.

Technical Leadership

Provide technical direction, code review, mentoring and engineering standards.

Architecture decisions, code reviews, mentoring and practical engineering standards.

Complex systems don’t come with instructions.

That’s where engineering experience matters.

We are comfortable entering existing or undocumented systems, tracing dependencies and business logic, understanding why previous decisions were made, and improving systems incrementally without unnecessarily disrupting the business.

SELECTED EXPERIENCE

Experience that spans the entire system.

Enterprise software, national healthcare platforms, real-time SaaS, data collection & analytics and product configuration.

Sciensano

National Healthcare Platform · Belgium

Full-stack engineering and technical leadership for a national healthcare data platform.

Java

Spring Boot

Angular

HL7

Kubernetes

Mirth

Hive CPQ

CPQ Platform · Belgium

Provided application maintenance and resolved production support tickets across a Spring Boot and Angular-based CPQ platform.

Java

Spring Boot

Angular

JPA/Hibernate

MySQL

SnowcatCloud

Event Collection & Data Pipeline · United States

Maintained the data collection platform and built a configurable event collector enabling Shopify apps to send events into SnowcatCloud.

Java

Spring Boot

Angular

AWS

Snowplow

Shopify

ETPI Sistemas e Automação

Real-Time Saas · Brazil

Technical leadership for a real-time SaaS platform supporting 100+ operational teams and 500+ field workers.

Java

Spring Boot

Angular

PostgreSQL

Android

APIs

Darwin Engenharia

Sanitation Service Platform · Brazil · Through ETPI

Built a sanitation services platform spanning Android and web applications, including DevOps and the handover of the system into production.

Java

Spring Boot

Ionic

PostGis

Android

Docker

ArcelorMittal

Industrial Production Planning & Tracking · Brazil · Through ETPI

Maintained a Java Swing application used to plan and execute production-line operations and track the manufacturing of steel coils, including acceptance testing and production rollout to operational terminals.

Java

Swing

Oracle

Acceptance Testing

Production Rollout

Topicus Finance

Enterprise Financial Systems · Netherlands

Enterprise financial applications supporting core business processes, integrations and long-running systems.

Java EE

EJB

Apache Wicket

JPA/Hibernate

Service-oriented Architecture

Lacent – Wehkamp

Customer Risk Rating Platform · Netherlands · Through Topicus

Built a customer risk-rating platform that collected payment and order events across the Wehkamp webshop, processed them nightly, calculated daily customer risk ratings for lending applications, and distributed rating events through Lacent’s event bus.

Java EE

WebSphere

Oracle

SOAP/JMS

Event-Driven Architecture

ABN AMRO Bank

Mortgage Lending Process Automation · Netherlands · Through Topicus

Rolled out and customized the Force mortgage-lending application, automating the end-to-end lending process through a BPM platform.

C#

.NET

MSSQL

BPM

Process Automation

NIBC Bank

Retail Banking Platform · Netherlands · Through Topicus

Built a new retail banking web application and integrated it with internal banking systems, including SEPA and ledger services.

Java EE

WebSphere

SOAP

Banking Integration

Accenture

Enterprise Financial Systems · Netherlands

Supported three development teams with application maintenance and bug fixing across T-Mobile/Orange, Electrabel and Greetz.nl.

Java

Enterprise Applications

Bug Fixing

Maintenance

Orange – T-Mobile

ADSL Customer Provisioning Automation · Netherlands · Through Accenture

Built an automated workflow system for subscribing and unsubscribing ADSL customers, integrating an event bus with an Axios workflow engine to orchestrate the provisioning process.

JavaScript

Oracle

PL/SQL

Event Bus

BPM

Oracle Workflows

Electrabel

Energy Billing Automation · Netherlands · Through Accenture

Built a BPM system for calculating energy bills using Oracle Lodestar, automating the billing calculation workflow.

Oracle Lodestar

BPM

Energy Billing

Process Automation

Greetz.nl

Greeting Card Production & Fulfillment · Netherlands · Through Accenture

Built the integration between Greetz’s webshop and the printing and postal fulfillment backend, generating production batches and distributing card orders to postcard printing facilities.

Java EE

Tomcat

MySQL

Batch Processing

System Integration

TECHNOLOGIES

The technologies I work with.

Backend

Java / Spring Boot

Java EE

REST APIs

JPA / Hibernate

Frontend

Angular

TypeScript

RxJS

Ionic

Architecture

Distributed Systems

Domain-Driven-Design

Clean Architecture

API-first

Data

PostgreSQL

PostGIS

MongoDB

SQLite

Platform

Kubernetes

Docker

Helm

Linux

GitLab CI/CD

Integration

REST

SOAP

HL7

Mirth Connect

Third-party APIs

Mobile

Android

Offline-first

Capacitor

Qt

gRPC

AI-ASSISTED ENGINEERING

AI-assisted engineering, with engineering discipline.

We actively use AI-assisted and agentic development tools for implementation, analysis, refactoring, testing and code review.

AI can increase engineering throughput, but the responsibility for architecture, security, code quality and maintainability remains with the engineer.

“AI is a powerful tool. Good engineering decisions still require human judgment.”

ABOUT

Draaisma Tech is led by Bernard Arjan Draaisma.

An independent software engineering company focused on building, modernizing and operating complex software systems for international clients. Bernard works directly with companies as senior engineer, solution architect and technical lead.

Learn more about Bernard →

HOW WE WORK

A pragmatic and transparent way of working.

Start with the problem.

Understand the business need before choosing the technology.

Stay hands-on.

Technical leadership should remain connected to the system.

Improve incrementally.

Modernize without unnecessary disruption.

Own the outcome.

Take responsibility beyond the individual ticket.

THE STORY BEHIND DRAAISMA TECH

Building a Different Kind of Engineering Company

A short story about engineering, international collaboration and why I build Draaisma Tech this way.

Have a complex engineering problem?

Let’s talk about the system, the problem and what needs to happen next.

Start a conversation →

bernard@draaisma.tech

Brazil (Remote)

International B2B/PJ

EU / US time-zone overlap