SebastianHeitmann

Output is cheap now. Outcomes are not.

AI made producing software easy. Deciding what to build, judging what's good, and carrying it into production didn't get easier. Developer, project manager, consultant: I've been all three. Today they're one role. I build AI-powered products and processes and own them from first prototype to production.

Send a MessageDirect to my inbox. No funnel. I read every message.
Previously at
Jung von MattsynvertGranny & SmithOFFIS
What I do
01

Software Development

  • App Development
  • Fullstack Development
  • API & Backend Systems
  • Cloud Infrastructure
02

AI & Automation

  • Agentic Workflows
  • Prompt & Context Engineering
  • AI-assisted Development
  • Human-in-the-Loop Systems
03

Architecture & Compliance

  • System Architecture
  • Domain-Driven Design
  • GDPR & Data Protection
  • AI Trust Boundaries
04

Concept, Planning & Management

  • Technical Leadership
  • Requirements Shaping
  • Design Sprints
  • Rapid Prototyping
When to reach out
  • Delivery has slowed, and the team sees a different cause in every direction
  • The architecture got you here, but it will not carry the next stage
  • A technical decision now will shape cost, speed, or team structure for years
  • A migration, rebuild, or reorg needs someone who has already done it
Results
Gap Closed54% project risk identified and addressed

Identified a 54% projected failure risk through an initial assessment, then restructured the project management and changed the execution conditions to create a more viable foundation for the initiatives that followed.

Execution Risk
9+Contributors

Led technical project management for migrating a legacy SAP BW analytics environment to AWS, coordinating across architecture, data engineering, and delivery to build a scalable reporting foundation.

Cloud Migration
7countries rolled out

Stabilized the platform and content pipeline ahead of launch, enabling a reliable rollout across seven countries from day one.

Technical Delivery
Stalled → Stableintranet relaunch

Aligned concept, planning, budget approval, and cross-team execution for the relaunch of an internal platform — turning a stalled initiative into a stable delivery.

Product Leadership
+2points in satisfaction

Introduced a decentralized IT support model to improve internal service quality, contributing to a measurable two-point increase in satisfaction across the organization.

Operational Improvement
Engagement
AdviseHourly

Billed by the hour. Architecture reviews, hiring decisions, vendor evaluations, and second opinions before a high-impact commitment.

Technical project management
DeliverPer Cycle

Fixed price per delivery cycle. A focused engagement around a defined outcome — an MVP, a migration, a rebuild, or a delivery reset.

AI-powered products & processesWeb development for local businesses
PartnerMonthly Retainer

Ongoing monthly retainer. Senior technical partnership across architecture, delivery, and execution continuity.

Start a Conversation

Tell me what you are working through. I will get back to you within one business day with a candid view on whether and how I can help.