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Harris Brakmić

Senior Software Engineer

πŸ“ž +49 174 744 0995
πŸ“§ contact@brakmic.gmbh
🌐 brakmic.com
πŸ“ blog.brakmic.com
πŸ’» github.com/brakmic
πŸ† Certificates

Profile

Senior Software Engineer with 25 years of experience designing and implementing enterprise-scale applications across diverse industries including Retail, Finance, Energy, and Logistics. Proven expertise in building reliable, maintainable systems that solve real business problems.

Deep expertise in cloud platforms (Azure, Google Cloud, AWS), microservices, security infrastructure (Keycloak, OAuth2, OpenID Connect, cryptography), and full-stack web development using .NET, Angular, React, and Node.js. Strong focus on clean code, domain-driven design, and secure coding practices.

Extensive experience in implementing complex system migrations, building Progressive Web Apps, developing scalable APIs (GraphQL, gRPC, REST), and working with cloud infrastructure using Docker, Kubernetes, Helm, and Terraform. Currently running own software development consultancy, delivering high-quality solutions for enterprise clients.

Professional Experience

Brakmic GmbH

Since Aug 2021

Owner & Software Development Consultant

Independent consulting focused on software development and security infrastructure for enterprise clients across Europe.

C# TypeScript Java Python Azure Kubernetes

Patent Analytics Company

Jun 2020 - Jul 2021

Senior Software Engineer

Developed and maintained patent analytics platform, implementing RESTful APIs, GraphQL endpoints, and Progressive Web Applications for global enterprise clients.

C# .NET Core Angular Python Azure Cloud GraphQL

Retail Technology Company

Mar 2014 - May 2020

Senior Software Engineer

Modernized legacy retail systems into Progressive Web Apps using Angular and .NET Core. Redesigned and migrated applications to Azure Cloud, developed RESTful APIs, and trained development teams in Angular and modern web technologies.

C# TypeScript Angular .NET Core Azure Team Training

Global Logistics Corporation

Jul 2011 - May 2013

Senior Software Engineer & Team Lead

Designed and developed geo-tracking and logistics applications on Azure Cloud, implementing real-time tracking solutions with GIS integration and OpenStreetMap.

JavaScript C# Python Azure GIS

Energy Services Provider

Oct 2009 - Jun 2011

Senior Software Engineer & Team Lead

Developed suite of internal applications for Customer Management, Accounting, Controlling, and Advertisement Management, optimizing operational efficiency in the energy supply sector.

C# .NET ASP.NET WinForms VB6

Previous Positions (2001-2009): Telecommunications β€’ Financial Services β€’ Entertainment & Ticketing β€’ Publishing & Media β€’ University System Administration

Key Projects (2005-2026)

Industrial Automation & Manufacturing Systems

Jul 2026 – Present
C#ASP.NET CoreMicrosoft SQL ServerREST APIsWindows Services

Enhancement, maintenance, and performance optimization of specialized software products for a global industrial engineering and manufacturing group. Development of web services and system integrations for industrial automation, connected tooling, assembly and fastening systems, production traceability, and quality assurance. Implementation of industrial IoT and machine communication protocols, patching of production-critical installations, and extension of administrative, monitoring, and data-analysis interfaces.

File Synchronization Services

Aug 2025 – May 2026
C#TypeScriptAngularASP.NET CoreLiteDBREST APIsWindows Services

Designed and implemented a file synchronization platform enabling secure, automated data exchange between corporate networks and external partners through gateway infrastructure. Architected a server-client solution with real-time directory monitoring, delta synchronization, and bandwidth optimization. Delivered features including incremental sync, file exclusion patterns, auditing, move detection, and a Windows Admin Center extension for centralized configuration and monitoring across distributed deployments.

Inventory Management & POS Modules

Jan 2025 – Jul 2025
ReactNodeJSTypeScriptC#.NETEntityFrameworkKubernetesHelmAzure

Implementation of a new inventory management module based on .NET with C# and EntityFramework. Extension of the POS system with TypeScript and React. Configuration and deployment of microservices via Helm and Kubernetes on Azure Cloud.

Archiving Services on GCP

Aug 2024 – Dec 2024
C#TypeScriptAngularKubernetesHelmTerraformBigQuery

Extended frontend and backend of the archiving service. Used C# and Google Cloud Platform for the backend and TypeScript with Angular for the frontend. Leveraged BigQuery for data analytics and Terraform for infrastructure provisioning.

Keycloak IAM Integration

Apr 2024 – Jul 2024
KeycloakTypeScriptJavaNestJSGraphQLAzureKubernetes

Deployed and integrated Keycloak IAM into an existing Angular Web App. Developed a new set of GraphQL APIs using the NestJS microservices framework. The complete product runs on Azure Cloud with Kubernetes orchestration.

D-Trust TSE Integration

Dec 2023 – Mar 2024
C#VB.NETMSSQLCryptography

Developed and integrated a VB/C# application to connect D-Trust Cryptovision TSE (Technical Security Element) with Point of Sale systems. Updated existing TSE software to the latest version, aligning with current German security standards. Ensured seamless integration with POS systems to enhance transactional security and efficiency.

Security Infrastructure Development

Apr 2023 – Sep 2023
KeycloakAngularTypeScriptJavaPythonKubernetesHelmNestJS

Spearheaded the integration of a robust security infrastructure leveraging Keycloak. Developed custom extensions for Keycloak using Java, crafted bespoke Helm charts for Kubernetes deployment, enhanced the legacy NodeJS backend, and contributed to the Angular frontend. Laid the architectural groundwork for an impending migration to NestJS.

Customer Management Application

Nov 2022 – Apr 2023
AngularTypeScriptGraphQLNodeJSNestJSMSSQLAzure DevOps

Led the development of a sophisticated Customer Management Application hosted on Azure and orchestrated with Kubernetes, encompassing comprehensive client data management with GraphQL APIs and a modern Angular frontend.

Mobile Backend for Scanning Devices

Aug 2022 – Dec 2022
NodeJSTypeScriptNestJSGraphQLDockerMongoDB

Engineered a robust backend system for mobile scanning devices, facilitating seamless data processing and integration on Azure. Built with NestJS and GraphQL, containerized with Docker for consistent deployment across environments.

Streaming Data Analysis Microservices

Jan 2022 – May 2022
C#Python.NET CoreKubernetesTerraformBigQuery

Developed microservices to manage and analyze streaming data efficiently, utilizing Google Cloud infrastructure to enhance processing capabilities. Provisioned with Terraform and orchestrated via Kubernetes for scalability.

Retail Backend & Security Services

Oct 2021 – Nov 2021
Apache KafkaKeycloakKubernetesTerraformKotlinJavaC#Python

Bolstered customer authorization services through custom Keycloak extensions, new authorization flows, and email verification via TOTP. Deployed on Kubernetes with Terraform-managed infrastructure, ensuring enhanced security and streamlined retail operations.

Event Processing Microservice on AWS

Aug 2021 – Sep 2021
TypeScriptNodeJSDockerKubernetesTerraformSQSEventBridge

Engineered a microservice to process and transform legacy ticketing events for compatibility with newly deployed AWS EventBridge logic. Containerized with Docker and orchestrated on Kubernetes for reliable event-driven data processing and analysis.

API Design for Partner Integration

Dec 2020 – Jul 2021
C#Python.NET CoreODataGraphQLAzureOpenAPI v3

Designed and developed a suite of RESTful APIs enabling partner corporations to integrate with their internal machine learning endeavors. The APIs, accessible via REST, OData, and GraphQL, were architected adhering to Clean Architecture and SOLID principles with OpenAPI v3 documentation.

Customer Management PWA

Jul 2020 – Dec 2020
C#.NET CoreTypeScriptAngular2FAOAuth2

Conceptualized and developed a mobile-first progressive web application aiding Customer Success Teams across Europe, the US, and Japan in managing customer engagements autonomously, without technical complexity. Built with Angular frontend, .NET Core backend, and secured with two-factor authentication and OAuth2.

.NET 4.x to Angular Migration

Nov 2019 – Jun 2020
C#.NET CoreTypeScriptAngularRESTGraphQL

Instrumental in migrating core logic and designs from a legacy .NET 4.x WCF application to modern Progressive Web Apps. Built a fresh backend in C# and .NET Core with REST and GraphQL APIs, paired with an Angular-based frontend to improve performance and maintainability.

Automated Invoice Processing

May 2019 – Oct 2019
C#.NET CoreDockerAzure

Engineered a suite of applications automating the processing, indexing, and retrieval of diverse vendor-specific invoice documents, expediting financial workflows through containerized microservices on Azure Cloud.

Deployment Framework

Jan 2019 – Apr 2019
DockerPowerShellPythonAzure

Developed a framework enabling automatic creation and maintenance of private Docker registries, source code builds, and deployments to cloud instances, streamlining retail application rollout processes.

Legacy Retail System Revamp

Jan 2016 – Dec 2018
C#.NET CoreTypeScriptAngularAzureGraphQLgRPC

Acted as the principal designer and developer in reimagining a legacy retail system into a modern Progressive Web App. This major overhaul involved multiple iterations including the introduction of Angular, team building and training, database migration to Azure SQL, API and UI components development, and gRPC-based services reimplementation, leading to a holistic transformation of the retail application landscape.

Mobile & Document Systems

2014 – 2015
NativeScriptTypeScriptC#Lucene.NETWebSockets

Commodity management mobile apps, monitoring systems, translation tools, document indexing with Lucene.

Geo-Tracking & Logistics Systems

2011 – 2013
JavaScriptC#PythonAzureGISOpenStreetMap

Real-time tracking solutions, GIS integration for DHL Innovation Center logistics applications.

Energy Supply Industry Applications

Oct 2009 – Jun 2011
C#.NETASP.NETWinFormsVB6

Suite of internal applications for Customer Management, Accounting, Controlling, and Advertisement Management optimizing operational efficiency.

Android Multimedia Application

Jan 2009 – Aug 2009
JavaC++Android

Multimedia app for first-generation Android devices with photo capture, sound recording, and cloud-based storage access.

Adobe InDesign Plugin Development

Oct 2008 – Dec 2008
C++COM+Adobe InDesign

COM+ based Adobe InDesign Plugin providing brand-management functionalities for enhanced application usage.

Ticketing System Development

Jan 2008 – Sep 2008
JavaEJBJBoss

Java-based ticket processing system for an entertainment ticketing company streamlining ticket management workflows.

FinTech Portfolio Software

2006 – 2007
C++C#VB6 Migration

Portfolio-selection software development and VB6-to-modern-stack migration.

IT Consulting

2005 – 2006
VB6C#JavaC++

Multi-language consulting across Retail, Energy, and Finance sectors with software development, security testing, and auditing.

University System Administration

2001 – 2004
OpenBSDDebianSolarisFirewallsShell Scripting

System administration at a major university, managing Unix servers and network security.

Education & Certifications

Heinrich-Heine-University DΓΌsseldorf

Computational Linguistics & Information Science

October 2000 - December 2004

CCSK - Cloud Security Knowledge

April 2025 β€’ View

CCZT - Zero Trust Competence

April 2025 β€’ View

Service Mesh with Linkerd

March 2022

Google Cloud Big Data and Machine Learning

January 2022

Julia Scientific Programming

Dec 2016 - Jan 2017

Azure Cloud Architecture

Oct 2015 - Dec 2016

Data Science & Analytics

Dec 2015 - Jan 2016

Machine Learning

Oct 2015 - Jan 2016

Cloud Computing

Dec 2011 - Sept 2012

IT Specialist - Software Development

June 2008 - Apr 2010

Core Technologies & Skills

πŸ’» Programming Languages

C++

Since 2002

HDA Project HDAs Article HPX Docker HPX Tutorial HPX Revisited PKCE Lib PKCE Article Thrill BigData Fil-C

C#

Since 2004

OCR App

Java

Since 2008

OIDC Auth

JavaScript

Since 2011

Python

Since 2012

Data Science Load Tests JupyterLab Ext

TypeScript

Since 2013

CSV Writer Express API Passport KC

PureScript

Since 2015

Web Streams RactiveJS Redux Offline First

Assembly (x86/x64)

Since 2002

x86 Tutorial Part 2

☁️ Cloud & DevOps

Azure Cloud

Since 2011

Google Cloud

Since 2019

AWS

Since 2020

Kubernetes

Since 2018

K8s Projects KC HA QGIS

Docker

Since 2015

miniDevOps

Terraform

Since 2020

K8s Setup

Helm

Since 2019

Charts

🎨 Frontend Technologies

Angular

Since 2014

Articles Signals Scrollbar BFF GIS

React

Since 2015

React Kendo POS PWA

ASP.NET

Since 2006

Web Standards

HTML5, CSS3, ES6+

βš™οΈ Backend & APIs

.NET / .NET Core

Since 2004

OCR App PKI

NodeJS

Since 2013

C++ Addon Express API KC Admin

NestJS

Since 2020

Address API

GraphQL

Since 2018

REST APIs

Since 2010

gRPC

Since 2017

COM/COM+

Since 2005

Tutorials

πŸ”’ Security & IAM

Keycloak

Since 2021

Extensions Templating Automation K8s BFF BFF Lessons Admin Client

OAuth2 / OpenID

Since 2016

Passport ID4

2FA / TOTP

Since 2018

Cryptography

Since 2015

πŸ—„οΈ Databases

MS SQL Server

Since 2004

PostgreSQL

Since 2012

HA Setup PostGIS/QGIS Keycloak K8s

MongoDB

Since 2015

BigQuery

Since 2021

πŸ€– AI & Blockchain

Machine Learning / Azure ML

Since 2015

Azure ML

Semantic Kernel

Since 2023

Tutorial Series

LangChain

Since 2023

Experiments

ChatGPT Plugins

Since 2023

Blog Post

Bitcoin/Blockchain

Since 2017

Book Protocol

Ethereum

Since 2017

GitHub Project

Languages

German

Native / Fluent

English

Proficient