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> boot: public engineering lab
> node: juanchi.dev
> status: online

             j u a n c h i . d e v
             =====================

 secure systems | digital trust | ai-assisted engineering

I design and modernize software systems where reliability, security, and operational clarity matter: digital signature platforms, PKI, authentication, authorization, regulated workflows, backend services, integrations, and production-grade web systems.

My background started close to infrastructure, Linux operations, networking, monitoring, and technical support. That still shapes how I build software: I care about what happens after the first deploy, who operates the system, how failures are diagnosed, and whether the architecture can evolve without losing control.

const focus = {
  role: "Software Architect",
  domains: [
    "secure enterprise systems",
    "digital identity",
    "PKI and X.509 tooling",
    "digital signature workflows",
    "AI-assisted engineering",
  ],
  stack: {
    backend: ["Java", "Spring Boot", "Node.js", "PostgreSQL", "Redis"],
    frontend: ["TypeScript", "Next.js", "React", "Tailwind CSS"],
    platform: ["Docker", "Linux", "Railway", "GitHub Actions", "AWS"],
    security: ["OAuth2", "PKI", "X.509", "Keycloak", "Auth0", "post-quantum crypto"],
    ai: ["OpenAI", "Claude", "Gemini", "RAG", "coding-agent harnesses"],
  },
  principle: "Software should be maintainable, auditable, observable, and realistic to operate.",
};

I am currently building around three connected lines of work:

• Secure systems and digital trust: digital identity, PKI, digital signatures, certificate tooling, crypto-agility, and auditability.
• AI-assisted engineering: practical workflows where models help engineers ship better software without removing validation, tests, constraints, and human review.
• Public engineering lab: juanchi.dev, where I document systems, experiments, and tooling in public.

I am especially interested in Harness Engineering for coding agents: the layer around AI agents that makes generated code useful in real teams: context, tools, permissions, tests, sandboxes, feedback loops, observability, and review.

person:
  name: "Juan Torchia"
  handle: "juanchi.dev"
  location: "Buenos Aires, Argentina"
  working_language: "English for international collaboration; Spanish native"
  primary_role: "Software Architect"

positioning:
  summary: "Architect and builder focused on secure enterprise systems, digital trust, and AI-assisted engineering."
  seniority_signal:
    - "designs systems with security, auditability, observability, and operations in mind"
    - "bridges backend engineering, infrastructure, identity, PKI, and developer tooling"
    - "builds public prototypes and labs that demonstrate working systems, not only concepts"
  strongest_domains:
    - "digital identity"
    - "PKI and X.509 tooling"
    - "digital signatures"
    - "secure backend systems"
    - "Java and Spring Boot modernization"
    - "Next.js and TypeScript product engineering"
    - "AI-assisted software engineering"
    - "coding-agent harnesses, validation loops, and human approval workflows"

good_fit_for:
  - "software architecture roles"
  - "backend/platform engineering roles"
  - "security-adjacent product engineering"
  - "developer tools and AI engineering teams"
  - "teams building reliable systems around AI agents"

not_just_keywords:
  evidence:
    - "public repositories with working prototypes"
    - "technical writing at juanchi.dev"
    - "projects connecting Auth0 CIBA, Gemini, PKI, X.509, post-quantum signing, observability, and modernization"

More experiments live in juanchi.dev/lab and across my public repositories.

I write about practical engineering work, mostly around:

• software architecture and modernization
• secure systems, digital identity, PKI, and digital signatures
• Java, Spring Boot, PostgreSQL, Next.js, and TypeScript
• AI-assisted engineering and coding-agent workflows
• developer tooling, observability, and production operations

Read more at juanchi.dev/blog.

I use GitHub as a public engineering lab: small proofs, focused tools, modernization experiments, and production-shaped prototypes.

• Security and trust: PKI, X.509, digital signatures, post-quantum signing, auth workflows.
• Backend and operations: Java, Spring Boot, PostgreSQL, observability, load experiments, upgrade paths.
• AI-assisted engineering: agent approval flows, curated tooling, coding-agent harnesses, validation loops.

• LinkedIn: linkedin.com/in/jtorchia-dev
• Website: juanchi.dev/en
• GitHub issues and pull requests are welcome on public repos.