Laurin Hagemann - Software Architect (Freelance)

Q: Where is Laurin based?

Laurin is based in Bochum, Germany .

Q: What languages does Laurin speak?

Laurin speaks the following languages: German (Advanced), English (Advanced), Spanish (Intermediate), French (Intermediate), Chinese (Elementary) .

Q: How many years of experience does Laurin have?

Laurin has at least 10 years of experience. During this time, Laurin has worked in at least 14 different roles and for 15 different companies . The average length of individual experience is 1 year and 8 months . Note that Laurin may not have shared all experience and actually has more experience.

Q: What is Laurin's latest experience?

Laurin's most recent position is Software Architect (Freelance) at Care4Sure .

Q: What companies has Laurin worked for in recent years?

In recent years, Laurin has worked for Care4Sure , Solandeo , Masterminding EDEN Initiative , Masterschool Ltd. , and Neuland e.V. .

Q: Which industries is Laurin most experienced in?

Laurin is most experienced in industries like Information Technology , Education , and Automotive . Laurin also has some experience in Government and Administration , Media and Entertainment , and Professional Services .

Q: Which business areas is Laurin most experienced in?

Laurin is most experienced in business areas like Information Technology , Research and Development , and Quality Assurance . Laurin also has some experience in Product Development , Strategy , and Human Resources .

Q: Which industries has Laurin worked in recently?

Laurin has recently worked in industries like Information Technology , Education , and Automotive .

Q: Which business areas has Laurin worked in recently?

Laurin has recently worked in business areas like Information Technology , Research and Development , and Quality Assurance .

Recommended expert

Bochum, Germany

Experience

Feb 2026 - Present

2 months

Software Architect (Freelance)

Care4Sure

Delivered MVP-focused full-stack architecture for a health-sector client: Vite/React frontend, backend services on Google Cloud Run, and Supabase for database plus IAM/authentication.
Supported product requirements engineering and prioritized cost-aware workload placement, implementing browser-side/edge computation where feasible before moving logic to backend services.

Jul 2025 - Sep 2025

3 months

Software Architect (Freelance)

Solandeo

Safeguarded the most critical company asset – the PostgreSQL database: established backups, PITR, and a read replica; delivered high availability with HAProxy and a custom failover mechanism.
Designed a CI/CD approach and a proper staging environment; rolled out modern agile engineering practices and tooling (GitLab, Bitbucket Pipelines, Docker).
Bootstrapped a company-wide cloud migration plan (Terraform, IONOS, managed Kubernetes).
Built and deployed a production data pipeline for data engineering and management reporting (Astronomer, dbt, Helm, Terraform, Kubernetes) with Python-based data workflows on Snowflake and a Power BI frontend for the finance team.
Implemented event-driven workflows with Apache Airflow 3 to orchestrate cross-system processing and improve reliability of pipeline-triggered business processes.
Delivered security architecture and operations aligned with German energy-sector standards: ISO/IEC 27001 (ISMS), ISO/IEC 27019 (energy utilities); implemented IAM with Keycloak (SSO, RBAC), secret management and key rotation, hardened CI/CD and cloud landing zone.
Spearheaded change management workshops for a custom SAP solution creation for a merger of multiple companies, integrating logistics, sales, and hardware-preparation workflows from customer contact to delivery of the smart meter gateway.
Improved system reliability and observability by resolving drift between infrastructure and IaC; added missing services to Grafana for monitoring and alerting.
Contributed to requirements engineering across product and platform streams, favoring edge/in-browser processing patterns over backend execution to reduce cloud cost and latency.

Jan 2025 - Present

1 year 3 months

Systems Architect: AI, Robotics & IT

Masterminding EDEN Initiative

Engaging in long-term systems architecture and design for a high-tech, sustainable habitat, showcasing forward-thinking and complex problem-solving abilities.

Dec 2024 - Present

1 year 4 months

Bochum, Germany

Programming Lecturer & Career Mentor

Masterschool Ltd.

Deliver interactive programming lectures, providing students with practical skills and hands-on coding experience.
Introduced a peer-coaching program into the curriculum, enabling high-performing students to mentor peers and scaling support beyond instructor capacity.
Offer personalized mentoring and direct feedback, guiding individuals to achieve their career goals and land their ideal jobs.

Dec 2024 - Present

1 year 4 months

Bochum, Germany

Business Transformation Consultant

Neuland e.V.

Led the business transformation of Neuland e.V., an association with 200 members, applying the Theory U framework to foster systemic evolution.
Received outstanding feedback: “Thank you! I could express what truly matters to me effortlessly. I didn’t know I had that in me.”

Jan 2024 - Present

2 years 3 months

Brussels, Belgium

Software Architect Consultant

European Union (EDEH Working Group)

Acted as data architect and solution designer for EDEH interoperability initiatives, guiding technical strategy and architectural feasibility for Europe-wide software and data infrastructure.
Facilitated design-thinking workshops with stakeholders and translated outcomes into actionable technical requirements and delivery priorities.
Designed JSON-LD data models for interoperability and shaped enterprise-architecture foundations for higher-education ecosystems, including governance structures and role definitions.

Dec 2023 - Present

2 years 4 months

Founder & Software Architect

LearnGraph

Bootstrapped the end-to-end platform architecture: Kubernetes microservices, Terraform IaC, Golang services with shared libraries, and a React frontend with REST/HTTP-RPC.
Built AI-native services with OpenAI and Gemini, using LangChain/LangGraph plus production-oriented RAG patterns (Pydantic contracts, vector databases, semantic search, and embedding pipelines).
Standardised a REST-first microservice architecture; validated gRPC in an earlier prototype for specific service-to-service communication paths.
Implemented event-driven workflows across platform services to decouple processing stages and improve responsiveness.
Designed production-grade CI/CD with GitHub Actions plus security, testing, and performance practices from day one (unit, integration, and load testing).
Implemented a complete IAM concept with Keycloak (SSO, RBAC, service-to-service auth), aligning security and delivery practices across the stack.
Built and coached a lean engineering team, teaching architecture reasoning so every engineer understood why each system was built the way it was.
Founded and scaled a mission-driven contributor community from scratch; coordinated a distributed team through regular reflection sessions and goal-aligned delivery.
Established strategic partnerships across Europe, the US, Taiwan, the GCC (UAE), and multiple African countries; initiated pilots spanning German schools and international partners.
Formed ERASMUS+ partnerships with 5+ universities across 5 EU countries.
Built an observability stack from scratch: OpenTelemetry Collector with Dash0, plus self-hosted Prometheus, Loki-stack, and Grafana dashboards with alerting.
Built the Dotflow Python CLI so engineers can trigger the same backend API capabilities as the web frontend from terminal workflows and automation scripts.
Led product requirements engineering with domain stakeholders and steered implementation choices toward edge-capable and client-side execution when beneficial for cost and responsiveness.

Jan 2022 - Dec 2024

3 years

Dortmund, Germany

Scientific Computing & Simulation

TU Dortmund

Built and ran extensive scientific simulations with MATLAB and applied scientific-computing methods to analyze system behavior and support research decisions.

Aug 2021 - Mar 2022

8 months

Berlin, Germany

Senior Software Developer & System Architect

OneFootball

Co-led the re-architecture of core systems for a high-traffic consumer subscription service, compartmentalising the platform to improve scalability and enable third-party integrations—cutting time-to-market for new features by 20%.
Drove the migration towards a microservices-based system on AWS (EKS), enhancing resilience and scalability while joining a cost-reduction task force that trimmed overall cloud spend by 5%, a multi-million-euro annual saving.
Established full telemetry coverage with New Relic across logs, trace spans, and metrics; used AWS Lambda for event-driven and integration workloads.
Used Python for data-analysis tasks (including graph/network analysis) to support architecture and performance decisions.
Coached the team in Scrum practices to ensure delivery.

Jun 2021 - Mar 2022

10 months

Munich, Germany

IT & Business Consultant

Colenet GmbH

Taught risk management via different types of quality assurance and testing methods.
Designed and performed multiple workshops for a large insurance company.

Feb 2018 - Mar 2021

3 years 2 months

Ingolstadt, Germany

Senior Embedded Systems Architect

e.solutions (for Audi AG)

Architected and delivered mission-critical software for Audi’s In-Vehicle Infotainment systems, including a multi-million-dollar hybrid online/satellite radio project with a US partner.
Implemented the Android stack end-to-end: microcontroller firmware to Android HAL, Binder services, and app layer; integrated cameras/sensors and display paths; contributed to device driver bring-up and kernel configuration.
Developed microcontroller firmware and RTOS components; implemented and debugged SPI/I2C/UART/CAN interfaces for hardware integration.
Worked within AOSP, JNI/NDK, and custom builds; debugged complex HW/SW interaction issues to ensure stability and performance.
Spearheaded the integration of Golang and Rust into the embedded architecture with SWIG connections to the existing C++ framework and performed gRPC performance benchmarks on hardware.
Built a Python-driven Docker build system for embedded development, improving reliability and reducing onboarding time.
Redesigned core architecture and improved system stability across a large Agile team through structured documentation and collaboration.
Delivered a reusable Android client layer in Java/Kotlin integrated with C++ via custom JNI; led a Golang PoC team to extend the embedded stack.
Developed robust hybrid radio integration for Audi IVI, meeting strict real-time and stability requirements.
Created a generator-based C++ dependency injection framework that increased test coverage and reduced defect risk.

Feb 2017 - Sep 2017

8 months

Cali, Colombia

Data Pipeline Architect

Centro Internacional de Agricultura Tropical (CIAT)

Architected and delivered the CIAT data-integration backbone primarily in Python, connecting internal systems and enabling reliable data flows for research operations.
Built the associated public-facing layer in PHP, integrating it with Python pipeline services to publish CIAT’s newest research data and increase international visibility.

Jan 2016 - Present

10 years 3 months

Programmer & Data Analyst

Open-Source Projects

Contributed bugfixes to the IAM-aware oauth2proxy.
Contributed a test-automation framework to the AI-native vector-graph database helix-db in the style of Deterministic Simulation Testing (DST) based on TigerBeetle.
Conducted comparative historical analysis of major social revolutions in the last 100 years.
Developed penetration testing tooling: fully automated SSHv2 MITM library; X11 Keylogger.
Created a self-rewriting ELF binary PoC with control flow analysis to evaluate invariant transformations.
Implemented a root-only Android application collecting raw 802.11-client frames for user privacy research, using HackRF, Aircrack suite, and Lua; client in Golang, server in Python.
Built a C++20 compiler fork removing backward compatibility to reduce common programming mistakes.
Solved the Cryptopals challenges.
Implemented a DHT11 sensor driver for Arduino learning on circuitry.
Detected traffic anomalies by analyzing VPN DNS traffic with Python and Pandas.
Discovered a CVE in ADODB.Stream via reverse-engineering JavaScript ransomware.
Wrote an ELF binary classifier with machine learning (Shogun, Python).
Maintained personal server architecture with systemd and tight firewall rules; migrated from IPTables to nftables; used IPsec, OpenVPN, and Wireguard.
Reduced Golang binary size by patching the compiler to remove .pclntab.
Implemented a physics-based jump-and-run game with Unreal Engine 4, PhysX, Blender, C#, and Godot.
Created a live video streaming application in Python on Raspberry Pi.
Developed an object-oriented X11 wrapper library in C++ with OpenGL and Xorg.
Built a DOCSIS cable model client library in Golang for proprietary router automation and data collection.

Jan 2016 - Dec 2024

9 years

Open Source Contributor

Debian Project

Contributed to the stability and quality of the Debian ecosystem through package maintenance and upstream bug-fixes, reflecting a commitment to high-quality engineering standards.

Nov 2015 - Jan 2017

1 year 3 months

Münster, Germany

System Modernization Lead

Lit Verlag

Led the modernisation of internal publishing and printing systems, automating book-cover creation and centralising resource planning (SAP/PPS) into a single database—eliminating 100 hours of manual work per week and freeing one hour per publisher per day.
Implemented Python scraping and integration workflows that connected Google Docs and OneDrive into internal network tooling, reducing manual copy/paste operations and data friction.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Education, Automotive, Government and Administration, Media and Entertainment, and Professional Services.

Information Technology

Education

Automotive

Government and Administration

Media and Entertainment

Professional Services

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Research and Development, Quality Assurance, Product Development, Strategy, and Human Resources.

Information Technology

Research and Development

Quality Assurance

Product Development

Strategy

Human Resources

Skills

Soft Skills

Mindful Leadership
Strategic Partnerships
Community Care

Teamwork

Architecture Planning
Design Thinking
Scrum
Safe
Spice
Liberating Structures
Pair/mob-programming

Areas Of Expertise

Cloud
Sap
Teaching
Supply-chain (Logistics)
Automotive (Embedded)

Programming

Golang
Rust
Python
C++
C
React (Javascript/typescript)
Java
Kotlin
Ruby
Lua
Wasm
Cuda
Assembly

Machine Learning

Deep Neuronal Networks
(Graph) Convolutional Networks
Tensorflow
Pytorch (Geometric – Pyg)

Devops

Kubernetes
Helm
Terraform
Docker
Jenkins
Jira
Bitbake
Aws (Eks)
Gcloud (Gke)

Algorithms

Compression & Encoding
Cryptography
Distributed Computing: Paxos, Dlt
Optimal Transport: Sinkhorn

Networking / Rpc

Grpc
Rest
Vpns
Ipsec
Bgp
Dnssec
Oauth(2)
Tcpdump
Wireshark
Sshv2

Operating System

Selinux
Apparmor
Lxc
Cgroups
Process Scheduling
Resource Management
Sysv-init
Systemd
Yocto
Android (Framework Apps, Aosp Extension/hal, Lineageos)
Fuchsia
Kernel Modules

Languages

German

Advanced

English

Advanced

Spanish

Intermediate

French

Intermediate

Chinese

Elementary

Education

Oct 2022 - Jun 2024

TU Dortmund

Bachelors of Science in Physics · Physics · Dortmund, Germany · Average: 1.7; Thesis: 1.0

Certifications & licenses

Social Presencing Theater

Presencing Institute & MITx

Resilient Leadership

Havard Business School (Online)

Certified Kubernetes Application Developer (CKAD)

Coursera

Professional Scrum Master (PSM)

Scrum Alliance

Certified Android Developer (Kotlin, Jetpack)

IT-Schulungen.com

Embedded Android and Automotive (Vehicle HAL, Car API)

CBT Training & Consulting

Statistics

Experience

Total positions 15

Experience in Information Technology 10 y

Avg length 2 y 5 m

Longest experience 10 y 2 m

Global Experience

Countries worked in 3 (Germany, Belgium, Colombia)

Primary country Germany

Expertise

Recent roles Software Architect (Freelance), Systems Architect: AI, Robotics & IT, Programming Lecturer & Career Mentor

Main industries Information Technology, Education, Automotive

Main business areas Information Technology, Research and Development, Quality Assurance

Qualifications

Highest degree Bachelor

Certifications earned 6

Profile

Created

March 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Laurin based?

Laurin is based in Bochum, Germany.

What languages does Laurin speak?

Laurin speaks the following languages: German (Advanced), English (Advanced), Spanish (Intermediate), French (Intermediate), Chinese (Elementary).

How many years of experience does Laurin have?

Laurin has at least 10 years of experience. During this time, Laurin has worked in at least 14 different roles and for 15 different companies. The average length of individual experience is 1 year and 8 months. Note that Laurin may not have shared all experience and actually has more experience.

What roles would Laurin be best suited for?

Based on recent experience, Laurin would be well-suited for roles such as: Software Architect (Freelance), Systems Architect: AI, Robotics & IT, Programming Lecturer & Career Mentor.

What is Laurin's latest experience?

Laurin's most recent position is Software Architect (Freelance) at Care4Sure.

What companies has Laurin worked for in recent years?

In recent years, Laurin has worked for Care4Sure, Solandeo, Masterminding EDEN Initiative, Masterschool Ltd., and Neuland e.V..

Which industries is Laurin most experienced in?

Laurin is most experienced in industries like Information Technology, Education, and Automotive. Laurin also has some experience in Government and Administration, Media and Entertainment, and Professional Services.

Which business areas is Laurin most experienced in?

Laurin is most experienced in business areas like Information Technology, Research and Development, and Quality Assurance. Laurin also has some experience in Product Development, Strategy, and Human Resources.

Which industries has Laurin worked in recently?

Laurin has recently worked in industries like Information Technology, Education, and Automotive.

Which business areas has Laurin worked in recently?

Laurin has recently worked in business areas like Information Technology, Research and Development, and Quality Assurance.

What is Laurin's education?

Laurin holds a Bachelor in Physics from TU Dortmund.

Does Laurin have any certificates?

Laurin has 6 certificates. Among them, these include: Social Presencing Theater, Resilient Leadership, and Certified Kubernetes Application Developer (CKAD).

What is the availability of Laurin?

The availability of Laurin needs to be confirmed.

What is the rate of Laurin?

Laurin's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.