Systems builder Security engineer Technical educator

Build the future.Keep control.

I help teams design and build agentic workflows, then prove they are secure, dependable, and ready for real-world use.

New to these tools? I help first-time builders understand the fundamentals, create something useful, and learn how to test it.

See the workflow Book a 30-minute call

// WHO I HELP

Two paths. One standard.

I work with teams moving important workflows into operation and first-time builders creating their first systems. Both deserve something clear, testable, and useful.

01Teams & businesses

Turn an important workflow into a dependable operation.

Design, integration, evaluation, security boundaries, and a practical path from a promising idea to real-world use.

02First-time builders

Move from curiosity to your first working system.

Clear explanations, guided building, and a repeatable way to test what you create, even when the vocabulary is new.

// WHAT I PROVIDE

Build it.
Prove it. Own it.

01
/build

The workflow has potential, but the path from idea to operation is unclear.

I helpI turn the idea into a system people can use.

I map the work, connect the models, tools, APIs, and data, then define the permissions and approval points required for responsible operation.

02
/prove

The demonstration looks promising, but nobody has established whether it is dependable.

I helpI define success and produce evidence against that standard.

Repeatable evaluations and edge-case tests across reliability, latency, cost, data exposure, and security boundaries.

03
/enable

The technology is powerful, but the people using it still need a clear path.

I helpI give people the knowledge and process to operate what we build.

Beginner-friendly guidance, practical workshops, implementation sessions, runbooks, community events, and repeatable processes teams can carry forward.

// FROM IDEA TO EVIDENCE

From idea to
evidence.

This illustrative support-triage example moves through design, benchmarking, failure review, and refinement.

workflow-lab :: support-triage
step 01 / 04 · sample mode

Command: workflow design --goal "triage support requests". Status: WORKFLOW MAPPED.

StatusWORKFLOW MAPPED✓
INPUTNew support request
ROUTEClassify → Retrieve policy → Draft response
CONTROLRequire human review before sending
FALLBACKEscalate low-confidence or unsupported requests
Goal → Workflow → Test suite → Results → Failure review → Refine
  1. 01Understand
  2. 02Design
  3. 03Build
  4. 04Evaluate
  5. 05Own

// APPLY THE PROCESS

Have a workflow in mind? Let's establish what working should mean.
Start a conversation

// WHAT YOU LEAVE WITH

A working system.
Evidence you can use.

You leave with the system, evidence, controls, and documentation required to operate and improve it.

  1. 01

    Workflow map

    The work, decisions, tools, data, and owners.

  2. 02

    Working system

    A usable prototype or operational workflow.

  3. 03

    Evaluation suite

    Repeatable quality, latency, cost, and failure tests.

  4. 04

    Control model

    Permissions, security boundaries, and approvals.

  5. 05

    Improvement plan

    Evidence-backed priorities for the next version.

  6. 06

    Operational runbook

    Documentation your team can confidently use.

9+ yearsBankingFederal + DoDPublic + privateSecurity + systems

// THE THROUGHLINE

Security taught me what can break. Building taught me what matters.

For more than nine years, I have worked in environments where reliability, accountability, and security are operational requirements.

That experience shaped a practical approach: define the risk, build the smallest useful system, test it against reality, and make it understandable to the people responsible for it.

Today, I apply that perspective to hands-on systems work, evaluation, technical education, community building, and my work as a Devin AI Ambassador with Cognition.

Mark Fenner
Mark FennerSecurity · systems · education

// HOW WE START

Start with the problem.
Leave with a direction.

A clear first step before either of us commits to a larger engagement.

  1. 01Conversation

    Bring the workflow, question, or first idea.

    Use thirty focused minutes to explain what you want to build, improve, evaluate, or understand.

  2. 02Definition

    Clarify the real constraint.

    We identify the outcome, boundaries, risks, and evidence that would make the next step worthwhile.

  3. 03Direction

    Leave with a practical next move.

    I recommend an assessment, build-and-prove sprint, guided build, or a more appropriate path.

// BEFORE WE TALK

A few useful answers.

The first conversation should clarify the work, not create another obstacle.

01Who do you help?

I work with teams moving important workflows into operation and first-time builders learning how to create their first useful system.

02Do I need AI or engineering experience?

No. We begin with the problem and explain the technical concepts as they become relevant. The process can meet you at a beginner, practical, or technical level.

03Can you build the system and teach us how to operate it?

Yes. An engagement can combine implementation, evaluation, documentation, workshops, and a practical handoff so the people responsible for the system understand it.

04How do you handle sensitive information?

The first conversation does not require credentials or confidential data. Before tools or data are connected, we define access, permissions, approval points, and the information that must remain out of scope.

05What happens after the first conversation?

You leave with a recommended next step. If the work is a fit, I outline the scope and intended outcome before anything begins.

// LET'S MAKE IT USEFUL

Bring the workflow, the question, or the first idea.

30 minutesGoogle MeetNo preparation required

Workflow Fit Call

Tell me what you are trying to accomplish and where it is getting stuck. We will identify the most useful next step.

Book a callEmail Mark