david.kogan
●Available from July · Paderborn or remote (EU)

Build agents.
Ship software.
Skip the theatre.

Agentic engineering for teams that are done writing glue code. Head of Development at Vansite, independent since 2018.

→ Start a projectls ./work
~/david.kogan · zsh
david@dev:~$ cat profile.json
{
"role": "Head of Development",
"at": "Vansite.eu",
"freelance": true,
"shareholder_of": "Vansite.eu",
"stack": ["claude-code", "ts", "react", "node"],
"location": "Paderborn, DE",
"available": "2026-07"
}
david@dev:~$ ./ship.sh --mode=agent
✓ ready · 0 blockers
david@dev:~$
// delivered for
// 02_SERVICES.md

What I offer

4 areas
$ service --id=ai01 / 04

AI automations for companies

Claude Code agents, internal copilots and data pipelines. Shipped to production, evaluated, handed over cleanly.

Claude CodeAgentsRAGEvalsPipelines
$ service --id=custom02 / 04

Custom software development

Web apps, APIs and integrations. React, TypeScript, Node.js on AWS. From the first MVP to real scale.

ReactTypeScriptNodeAWSAPIs
$ service --id=consulting03 / 04

Software & agent consulting

Audit of your stack, your workflows and where AI actually helps. Then a concrete plan.

AuditStrategyArchitectureHiring
$ service --id=equity04 / 04

Partner / equity engagements

Strong idea, limited budget? I’m open to building as a partner. Let’s talk.

MVPCo-foundingTech partner
// 01_WORK.log

Selected work

5 entries
★ FEATURED2026
SimplyBills preview
$ open https://simplybills.de
→ simplybills.preview

SimplyBills

Founder · Lead Engineer

Turns invoice chaos into a clean, exportable ledger. Built solo in two weeks, agent-first workflow.

Next.jsTypeScriptPostgresClaude Code
→ open
★ FEATUREDseit 2021
Vansite preview
$ open https://vansite.eu
→ vansite.preview

Vansite

Head of Development · Shareholder

Leading engineering at Vansite and part owner of the company. Feature delivery, architecture, hiring and production ops for a growing SaaS.

TypeScriptReactNode.jsAWS
→ open
[03] · 2020Freelance Engineer
GetAlly

Notification services on serverless AWS Lambda. TypeScript, event-driven, production-hardened.

TypeScript·AWS Lambda·Serverless
[04] · 2020Freelance Developer
Eco Minds

Complete WordPress platform with member area, custom PHP functionality and MemberPress + BuddyPress.

WordPress·PHP·Elementor
[05] · 2016-2018Trainee Developer
Interrogare

Spring web apps, questionnaire tracking tools, AWS deployments, Selenium test infrastructure.

Java·Spring·AWS·Selenium
// 03_ABOUT.md

Who I am

David Kogan
// portrait.webp · david_kogan

Head of Development and shareholder at Vansite. Freelance software engineer since 2018.

My focus: agentic workflows with Claude Code and JavaScript or TypeScript, from spec to production.

Based in Paderborn. Clients are founders, product teams and SMBs across Europe. Mostly remote, sometimes on site.

github.com/Dkogan90 ↗linkedin ↗x / @DavidKogan_90 ↗
# ~/.env.stack
export PRIMARY="Claude Code, Agentic workflows, JavaScript / TypeScript, React, Node.js"
export STACK="AWS, MongoDB, MySQL, Next.js, Serverless, WordPress, PHP, Java / Spring"
export PRACTICE="Test-driven development, CI/CD, Git / VCS, Code review, Tech leadership"
# testimonials.log
“Not only did David do a great job on our project, he even found a free way to do another project I had sent him. I would recommend David to anyone.”
· Stephen Coffey · Owner, Plexis
“David is very professional, knowledgeable and easy to work with. He was able to fix all the problems I had. I feel fortunate to have found him.”
· Stephanie Scanlon · Owner, Hollywood Beauty Magazine
“Reliable, efficient and easy to work with. He developed a very complicated website with many dimensions. His organizational skills and work ethic are remarkable.”
· Allison Low · Director, Eco Minds
// 04_CONTACT.sh

$ start_project.sh

# direct
email → david_kogan@hotmail.de
phone → +49 176 56967667
# elsewhere
github → /Dkogan90
linked → /david-kogan-1b86b6125
x → @DavidKogan_90
→ response time
Usually within 24h on workdays.