Christoffer Maintz

Full-time AI-native product engineer.

Consulting across DevOps, backend, CI/CD, developer experience, automation and AI-assisted development, taking independent technical ownership of concrete solutions across software, infrastructure and development workflows.

• CI/CD pipelines from build to test, staging and production with automated quality gates, releases and deployments across environments (incl. Azure Pipelines).
• Containerisation with Docker and Docker Compose; work on Kubernetes-related infrastructure; Azure (Functions, SQL), infrastructure as code, secrets management and reproducible environments.
• Modernising legacy applications: framework and stack upgrades (incl. legacy Shopware), removing deprecated code and consolidating duplicated logic.
• Developer experience: internal CLI tools, project scaffolding and reproducible local environments; linters, static analysis, tests, hooks, dependency and secret scanning moved as early in the flow as possible.
• AI-assisted development: coding agents with custom skills and hooks, guardrails so agent changes are never accepted uncritically, and cost-aware model routing.
• Mapping use cases and integrating AI into existing business processes to automate manual, repetitive work.

Software-consultancy internship in a client context: production-ready backend services, integrations and automation for business-critical e-commerce systems, primarily the client Illux’s Shopware webshop.

• Built Illux Product AI end to end as sole developer: a Shopware 6 plugin generating multilingual descriptions, SEO, categories and tags from product images via generative-AI APIs behind a provider-agnostic abstraction layer.
• Eliminated manual enrichment for most of a 3,000+ product catalogue, saving hundreds of hours of manual work. Business-critical and still in daily use.
• Asynchronous processing on Symfony Messenger + RabbitMQ with batching, retry with exponential backoff, idempotency, rate limiting and a full audit trail; configurable confidence model with human-in-the-loop approval.
• Artwork visualisation: shoppers preview art in curated rooms or a photo of their own, composited per scene and streamed live over server-sent events.
• Email template preview platform rendering transactional mail against real orders with client emulation, removing the need for manual test orders.
• Contributed cost-aware model routing to an internal agentic coding harness (Python, LangChain).

One deterministic quality standard - format, lint, types, tests, coverage, security - enforced identically while an AI agent edits, before push and in CI. Reusable GitHub Actions workflows, mise templates and a Claude Code plugin, released as versioned open source.

GitHub Actions · mise · Python · POSIX shell · TypeScript · Semgrep · gitleaks · osv-scanner · ESLint · Spotless · PMD · Claude Code

A monorepo of tools built on TypeSafe AI's Jev - an agent tool-call guardrail, a GitHub issue-triage Action and a bulk classification CLI - that run Jev on everything and hand only the uncertain cases to a human or a real LLM.

TypeScript · Node.js · Jev · GitHub Actions · Octokit · Vercel AI SDK · LangChain · Cloudflare Workers AI

A Jev-powered guardrail that judges every agent turn against the un-lintable rules in your CLAUDE.md or AGENTS.md, and tells the agent exactly which one it broke so it fixes it before moving on. About 300 ms and a fraction of a cent per turn.

TypeScript · Node.js · Jev · Claude Code hooks · Codex hooks · OpenCode · Vitest

A Spring Boot (strict hexagonal) + Angular platform that ingests job postings and generates tailored CVs and cover letters with ATS match reports, backed by Postgres full-text and pgvector semantic search.

Java · Spring Boot · Angular · PostgreSQL · pgvector · Flyway · LLM APIs · Firebase Auth · Docker

Electives: Advanced Databases, iOS

Ran daily operations across day and evening shifts: staffing, delegation, employee development and process improvement. Led a waste-reduction initiative worth roughly DKK 1M to the bottom line in its first year.

Shared responsibility for daily operations, planning and staff coordination; onboarding and interviews.