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MK1✳MARVIN KAMP
SOFTWARE ENGINEER
PORTFOLIO VIEWS01 / EDITORIAL02 / INTERACTIVE ●
OPEN TO A NEW ROLEGERMANY / REMOTE / 2026

COMPLEX PROCESSES. CLEAR SYSTEMS.

I build
systems
that last.

Marvin Kamp. Engineer and co-founder. I connect domain processes, modern software and accountable AI — from the first idea through to operations.

MK1 / CONNECTED SYSTEMS
EXTRUDED TYPE · REAL-TIME WEBGL

MK1 · explore projects, processes and engineering

25Y

Software development¹

15Y

Steel-sector ERP¹

8

Owner-built portfolio projects

FROM PRODUCT TO EVIDENCE↘
01 / PROJECT EXPLORER

One profile.
Many perspectives.

Products, platforms and processes. Choose a project to explore the problem behind it — and the engineering decisions holding it together.

OWNER-BUILT / AI product · creator workflowPUBLIC EVIDENCE
ROAMTALE / SYSTEM VIEW
RTAI product · creator workflow
  1. 01Photo + context
  2. 02Caption API
  3. 03.NET engine
  4. 04Review
  5. 05Platform boundary
Schematic illustration · no live data

RoamTale↗

Product for AI-assisted social posts from a user's own travel photos, with a publicly verifiable landing page and application.

ASP.NET Core, Razor Pages, AI caption workflow, JavaScript, mobile API, Expo, Docker
The complete case study ↗Public entry point ↗
OWNER-BUILT / Control plane · accountable automationPUBLIC EVIDENCE
MK1 COMMAND / SYSTEM VIEW
MK1Control plane · accountable automation
  1. 01Task
  2. 02Policy
  3. 03Human gate
  4. 04Runner boundary
  5. 05Audit + recovery
Schematic illustration · no live data

MK1 Command↗

Auditable control plane for AI-assisted business processes with role and policy models, durable workflows, signed runner protocols, human gates, MFA, backups and a clearly separated demo mode.

TypeScript, React, PostgreSQL, Docker, Caddy, VPS operations
The complete case study ↗Public entry point ↗
OWNER-BUILT / Self-hosted product · platform integrationPUBLIC EVIDENCE
PERSONA STUDIO / SYSTEM VIEW
PSSelf-hosted product · platform integration
  1. 01Creator
  2. 02Workspace
  3. 03Review + planning
  4. 04Platform APIs
  5. 05Insights
Schematic illustration · no live data

Persona Studio↗

Self-hosted creator workspace for planning, publishing and analyzing a creator's own short-form content and channels.

ASP.NET Core, Razor Pages, JavaScript, OAuth, Docker, Caddy
The complete case study ↗Public entry point ↗
OWNER-BUILT / Data platform · decision supportSANITIZED INSIGHT
BETMANAGER PRO / SYSTEM VIEW
DATAData platform · decision support
  1. 01Sources
  2. 02Quota control
  3. 03Normalize
  4. 04Local database
  5. 05Human analysis
Schematic illustration · no live data

BetManager Pro↗

Local sports-data and decision-support platform with multi-source ingestion, normalization, ELO, odds time series, coverage controls and a human final decision.

Next.js, TypeScript, Prisma, SQLite, C#/.NET, Chrome MV3
The complete case study ↗
OWNER-BUILT / Local-first software · document workflowsSANITIZED INSIGHT
KLAR. DMS COCKPIT / SYSTEM VIEW
klar.Local-first software · document workflows
  1. 01Capture
  2. 02Review
  3. 03OCR version
  4. 04Verified handoff
  5. 05Archive confirmation
Schematic illustration · no live data

klar. DMS Cockpit↗

Local companion for Paperless-ngx with case workflows, a scan studio and verified archive handoff. A sanitized architecture description explains the design without private documents or access details.

Python, JavaScript, SQLite, Paperless-ngx REST, OCR, PowerShell, Windows / Hyper-V
The complete case study ↗
OWNER-BUILT / Co-founding · logistics platformPUBLIC EVIDENCE
CARGOTROUPER / SYSTEM VIEW
CTCo-founding · logistics platform
  1. 01Driver needs
  2. 02Platform model
  3. 03Matching workflow
  4. 04Freight companies
  5. 05Administration
Schematic illustration · no live data

CargoTrouper↗

Co-founded logistics platform matching self-employed truck drivers without their own vehicle with freight companies; Marvin's technical role and the platform concept are publicly documented.

Full-stack marketplace, logistics workflows, platform engineering
The complete case study ↗Public entry point ↗
OWNER-BUILT / Workflow automation · integrationSANITIZED INSIGHT
ROAMTALE N8N AUTOMATION / SYSTEM VIEW
FLOWWorkflow automation · integration
  1. 01Trigger
  2. 02Input checks
  3. 03App API
  4. 04Outcome
  5. 05Recovery
Schematic illustration · no live data

RoamTale n8n Automation↗

Version-controlled workflow suite for RoamTale with a live-tested caption automation, daily digest and clearly separated posting and push templates.

Self-hosted n8n, webhooks, HTTP APIs, schedules, email and push workflows
The complete case study ↗
OWNER-BUILT / Interactive 3D website · personal work samplePUBLIC EVIDENCE
MK1 INTERACTIVE PORTFOLIO / SYSTEM VIEW
APIInteractive 3D website · personal work sample
  1. 01Content model
  2. 02Original glyphs
  3. 03WebGL renderer
  4. 04Accessible interaction
  5. 05Static delivery
Schematic illustration · no live data

MK1 Interactive Portfolio↗

Owner-built recruitment portfolio with two visual directions, procedural three-dimensional MK1 lettering and an accessible project explorer. No external 3D models or runtime libraries.

JavaScript, WebGL, GLSL, procedural 3D, Node.js, static generation, nginx
The complete case study ↗Public entry point ↗

Owner-built projects are labeled separately from synthetic work samples. Private operational data stays private.

FEATURED PRODUCT / ROAMTALE

One travel moment.
Many possibilities.

Owned travel photos become platform-specific content drafts. RoamTale connects .NET, AI generation, persona voice and a guided product interface.

PHOTO→CONTEXT + AI→REVIEW
  • Photo, tone and platform in one flow
  • Result cards, character counts and copy actions
  • Web product with API and mobile extension
ROAMTALE / PUBLIC PRODUCT●
Public RoamTale landing page

Public product page · 25 October 2026 · no account data

ASP.NET COREAI WORKFLOWREVIEWSELF-HOSTED
Marvin KampMARVIN KAMP
ENGINEER / BUILDER / CO-FOUNDER
02 / THE HUMAN IN THE LOOP

I think
beyond
the code.

I care why a process exists, which exceptions make it difficult and how a team can actually work with the solution.

My owner-confirmed experience connects long-term software development with 15 years in steel-sector ERP. Owner-built products and the publicly documented co-founding of CargoTrouper add product responsibility to that domain depth.

DOMAIN FIRST

Understand terms, state, data and exceptions.

SHIP WITH CARE

Deliver in inspectable steps and preserve a way back.

The full profile ↗
03 / RANGE WITH DEPTH

Skills with context.
And a source.

From C# and ERP to Python, modern web products and AI pipelines. Every area leads to a concrete project or an explicitly labeled work sample.

01

AI & agents

Decompose business processes, define approval boundaries and integrate AI output through traceable state.

  • LLM pipelines
  • Agent orchestration
  • Human-in-the-loop
  • Prompt versioning
  • Evaluation
  • n8n
Inspect evidence ↗
02

C# & .NET

Business logic, backend services and incremental legacy modernization. Understand and preserve existing behavior first.

  • C#
  • .NET
  • ASP.NET Core
  • Razor Pages
  • CLI tooling
  • Characterization tests
Inspect evidence ↗
03

Web & product interfaces

From data models and authentication to usable interfaces, dashboards and complete workflows.

  • TypeScript
  • JavaScript
  • React
  • Next.js
  • HTML
  • CSS
  • Responsive UI
  • WebGL
  • GLSL
  • Procedural 3D
Inspect evidence ↗
04

ERP & industrial processes

Connect commercial documents with material reality: units, tolerances, partial quantities and business exceptions.

  • Order-to-cash
  • Master data
  • Inventory
  • Batches & coils
  • Invoicing
  • Logistics
Inspect evidence ↗
05

APIs & B2B integration

Stable contracts, partner mappings, explicit error semantics and controlled recovery across system boundaries.

  • REST
  • OpenAPI
  • EDI
  • Webhooks
  • OAuth
  • HMAC
  • Idempotency
Inspect evidence ↗
06

Data & databases

Combine sources, control duplicates, preserve provenance and make coverage and quotas visible.

  • SQL
  • PostgreSQL
  • SQLite
  • Prisma
  • Ingestion
  • Normalization
  • Provenance
Inspect evidence ↗
07

Python & automation

Automate files, import paths and verification reproducibly. Keep outcomes, failures and provenance explicit.

  • Python
  • PowerShell
  • JSON
  • CSV
  • REST clients
  • Hash verification
Inspect evidence ↗
08

Deployment & operations

Deploy applications behind TLS, isolate internal services and ship releases with health checks and a rollback path.

  • Docker Compose
  • Linux
  • Caddy
  • nginx
  • HTTPS
  • Health checks
  • Rollback
Inspect evidence ↗
09

Quality & reliability

Account for failure modes, unknown outcomes and duplicate delivery. Verify compatibility and recovery explicitly.

  • Automated tests
  • Contract checks
  • Replay
  • Retry & Backoff
  • Audit trails
  • Recovery
Inspect evidence ↗
10

Documentation & handover

Make technology usable for others through executable examples, traceable decisions and concrete operational guides.

  • Docs-as-code
  • Quickstarts
  • Runbooks
  • API reference
  • Architecture
  • Git
Inspect evidence ↗
11

Document workflows

Model scanning, visual review, OCR and archive confirmation as separate states; preserve originals and page provenance.

  • Paperless-ngx REST
  • OCR pipelines
  • eSCL
  • SQLite
  • SHA-256
  • Windows / Hyper-V
Inspect evidence ↗
12

Product thinking & domain

From a concrete problem to a usable product. Connect engineering decisions with the workflows of the people using it.

  • Process modeling
  • Marketplace workflows
  • Requirements analysis
  • Prototyping
  • End-to-end delivery
Inspect evidence ↗
04 / OPEN ENGINEERING SAMPLES

Small systems.
Clear intentions.

These labs are synthetic. They isolate concrete engineering decisions and can be inspected independently of private products.

05 / WHERE I CAN CONTRIBUTE

Your next project.
My next contribution.

01

AI & Automation Engineer

Integrate AI into real business processes: state, approvals, APIs and recovery.

Relevant evidence ↗
02

Backend / Integration Engineer

C#/.NET, APIs, EDI and data flows for systems whose failures affect the business.

Relevant evidence ↗
03

Full-Stack / Product Engineer

Build and operate products from backend services to usable interfaces.

Relevant evidence ↗
GOOD QUESTIONS

Before we
start a conversation.

01What kind of work fits you best?

Work connecting domain processes with software: AI-assisted automation, C#/.NET backends, APIs and B2B integration, and full-stack products. I enjoy bringing structure to established workflows and making a useful first step actually usable.

02Is AI your only focus?

No. My foundation is business processes, long-lived software and integration. AI extends that work where output remains inspectable. Data models, failure handling, understandable interfaces and operations matter as much as the model.

03What do owner-built products show beyond a demo repository?

An owner-built product connects interface, domain workflow, integrations and delivery. A synthetic lab isolates one specific pattern so it can be inspected quickly. Both are valuable; I deliberately distinguish their provenance and evidence scope.

04Can I inspect code or technical material?

Evidence pages link to published labs, OpenAPI files, mapping examples, runbooks and sanitized case studies. They do not expose private applications or employer code. Each reference explains what can be inspected publicly.

05What could a first conversation look like?

Start with a concrete challenge: which process costs your team time, where do failures occur, and which system boundaries matter? From there we can establish fit, onboarding needs and a useful first contribution.

LET’S BUILD SOMETHING THAT MATTERS

The next good
connection starts
with hello.

Looking for someone who understands processes, connects systems and thinks a product through to operations? Let’s talk.