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patrickswedish/README.md

Patrick Ribbsaeter

Founder · Systems Engineer · AI Systems Architect

Systems. Intelligence. Product. Business.

Building and deploying across distributed systems, AI infrastructure, compilers and runtimes, concurrency, low-latency software, agentic systems, and production engineering.

AI-accelerated execution. Human-directed judgment.

Patrick Ribbsaeter    Ribbsaeter Systems    LinkedIn

Operating profile

A cross-disciplinary founder and systems engineer operating at the intersection of systems engineering, AI, product, and business.

Strong in unfamiliar systems: tracing execution behavior to the actual failure mode, identifying the architectural invariant, directing agents and automation, validating edge cases, and shipping the smallest durable correction with deterministic regression coverage.

AI functions as part of the engineering system — accelerating research, codebase exploration, implementation, testing, orchestration, and deployment while keeping architecture, tradeoffs, review interpretation, and final decisions human-directed.

The commercial foundation spans technology, computer retail, fashion, e-commerce, websites, media, marketing, branding, sales, and digital products. Engineering is approached from an operator's perspective: software as infrastructure for building, operating, automating, and scaling real businesses.

Industry is not the constraint. The same systems and AI capabilities apply across technology, financial services and banking, healthcare, real estate, retail, commerce, media, and other complex operating environments.


What gets built

Systems engineering

Distributed systems, backend architecture, concurrency, memory ownership, low-latency runtimes, compiler/runtime behavior, performance, reliability, and production debugging.

DISTRIBUTED SYSTEMS RUNTIMES COMPILERS CONCURRENCY PERFORMANCE

Agentic systems

Production AI agents, tool-using workflows, orchestration, MCP integrations, model/API integration, human-directed execution, evaluation, retrieval, and automation.

AGENTS MCP ORCHESTRATION AUTOMATION TOOL USE

Product systems

Architecture, APIs, SaaS products, internal platforms, deployment, observability, analytics, billing, and operational workflows.

PRODUCT SYSTEMS APIs SAAS CLOUD DEPLOYMENT

Business building

Founder-led product strategy, business development, sales, positioning, branding, marketing, digital commerce, and go-to-market execution.

FOUNDER PRODUCT GTM SALES BUSINESS


Selected upstream engineering

Substantive contributions to established production codebases, working within existing architecture, repository conventions, explicit invariants, review feedback, and regression requirements.

Project Engineering focus Status
Apache DataFusion Execution-layer schema conformance across in-memory execution and aggregation, including recursive nested Arrow Struct/List/Union adaptation Merged · PR #24394
LLVM X86 lowering for non-power-of-two vector integer division while preserving full-lane vectorization Merged · PR #215076
Meta Velox TopNRowNumber ordering correctness across in-memory and spilled execution paths Merged · PR #18529
Microsoft Agent Governance Toolkit Fail-closed approval-chain correctness for zero-required-stage configurations Merged · PR #3448
Microsoft TypeSpec Playground state synchronization and deterministic regression coverage Merged · PR #11660
TheBushidoCollective Han Windows project-path compatibility with Claude Code conventions Merged · PR #105
Redpanda RPC transport memory ownership and backpressure behavior Open · PR #31594
Supabase Supavisor PostgreSQL cancellation synchronization across backend reuse Open · PR #1149
Microsoft Pyright Inherited asymmetric descriptor detection across effective MRO behavior Open · PR #11605
Vercel Next.js Segment-cache navigation recovery with full-page fallback Open · PR #97815

Additional upstream work spans Meta Pyrefly, Google ADK, OpenAI Python, Ethereum go-ethereum, Bitcoin Core, iCalendar, Vercel AI SDK, Claude Agent SDK ecosystems, Docker, JAX, Cloudflare Workers, Solana Web3.js, and other production systems.

Independent upstream engineering. Contributions do not imply employment, partnership, endorsement, or client relationships with the organizations listed above.


Engineering method

Symptom
  → execution behavior
  → architectural invariant
  → root cause
  → minimal durable correction
  → deterministic validation

The objective is not maximum code output. It is the smallest correct change that fits the system.


Operating model

Technical depth is paired with founder-level commercial context: understanding what should be built, why it matters, how it reaches users, how it creates value, and how to execute without unnecessary complexity.

Open to selective projects, founder collaborations, and technically ambitious companies with real budgets, clear decision-making, and urgency to execute — particularly where the problem is difficult and there is no artificial ceiling on scope or industry.

Less talking. More building.

Website · Ribbsaeter Systems · LinkedIn

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